Hydrothermal Conditions Enhance Electrochemical CO2 Reduction Reaction: A Sustainable Path to Efficient Carbon Recycling Peer-reviewed

Takaaki Tomai, Alexander Guzman-Urbina, Takafumi Sato, Kazuyuki Iwase

Advanced Sustainable Systems　2400489　2024/11

DOI： 10.1002/adsu.202400489 　

Unified formulation of particle-size-dependent viscosity for Newtonian dispersions of micro- and nanoparticles Peer-reviewed

Yuko Arai, Takaaki Tomai, Gimyeong Seong, Ryoma Ito, Akira Yoko, Tadafumi Adschiri

Journal of Molecular Liquids　125659-125659　2024/07

DOI： 10.1016/j.molliq.2024.125659 　

ISSN： 0167-7322

Fusion Growth and Extraordinary Distortion of Ultrasmall Metal Oxide Nanoparticles Peer-reviewed

Akira Yoko, Yuki Omura, Kakeru Ninomiya, Maiko Nishibori, Tomoki Fujita, Hidetaka Kasai, Eiji Nishibori, Nobutaka Chiba, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

Journal of the American Chemical Society　2024/05/29

DOI： 10.1021/jacs.4c05106 　

ISSN： 0002-7863

eISSN： 1520-5126

Reduction of (100)-Faceted CeO₂ for Effective Pt Loading Peer-reviewed

Akira Yoko, Haodong Wang, Ko Furuya, Daiki Takahashi, Gimyeong Seong, Takaaki Tomai, Anatoly I. Frenkel, Mitsuhiro Saito, Kazutoshi Inoue, Yuichi Ikuhara, Tadafumi Adschiri

Chemistry of Materials　2024/05/21

DOI： 10.1021/acs.chemmater.4c00627 　

ISSN： 0897-4756

eISSN： 1520-5002

Effect of Exposed Facets and Oxidation State of CeO₂ Nanoparticles on CO₂ Adsorption and Desorption Peer-reviewed

Gimyeong Seong, Akira Yoko, Takaaki Tomai, Takashi Naka, Haodong Wang, Anatoly I. Frenkel, Tadafumi Adschiri

ACS Sustainable Chemistry & Engineering　2024/05/02

DOI： 10.1021/acssuschemeng.4c01322 　

ISSN： 2168-0485

eISSN： 2168-0485

Phonon mean free path of silicate glasses: a useful parameter to distinguish between framework and nonframework cations Peer-reviewed

Sohei Sukenaga, Bunta Ozato, Yohei Onodera, Shinji Kohara, Masahiro Shimizu, Tsuyoshi Nishi, Rie Endo, Takaaki Tomai, Akira Yoko, Sakiko Kawanishi, Hiroshi Fukaya, Hiromichi Ohta, Hiroyuki Shibata

ISIJ International　2024

DOI： 10.2355/isijinternational.isijint-2024-141 　

ISSN： 0915-1559

eISSN： 1347-5460

Development of PVK-Based Plastic Scintillators Loaded with Bi₂O₃ Nanoparticles Peer-reviewed

M. Koshimizu, S. Komatsuzaki, A. Watanabe, A. Sato, A. Yoko, G. Seong, T. Tomai, T. Adschiri, S. Kishimoto, Y. Fujimoto, K. Asai

2023 IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD)　2023/11/04

DOI： 10.1109/nssmicrtsd49126.2023.10337813 　

Supercritical fluids technologies for sustainable development goals Peer-reviewed

Takaaki Tomai, Elsa Weiss-Hortala, Lin Chen

The Journal of Supercritical Fluids　200　105993-105993　2023/09

DOI： 10.1016/j.supflu.2023.105993 　

ISSN： 0896-8446

Supercritical Hydrothermal Reactions for Material Synthesis Peer-reviewed

Tadafumi Adschiri, Seiichi Takami, Mitsuo Umetsu, Satoshi Ohara, Takashi Naka, Kimitaka Minami, Daisuke Hojo, Takanari Togashi, Toshihiko Arita, Minori Taguchi, Masahiro Itoh, Nobuaki Aoki, Gimyeong Seong, Takaaki Tomai, Akira Yoko

Bulletin of the Chemical Society of Japan　96　(2)　133-147　2023/01

DOI： 10.1246/bcsj.20220295 　

ISSN： 0009-2673

eISSN： 1348-0634

Process intensification for fast SrFe12O19 nanoparticle production from celestite under supercritical hydrothermal conditions Peer-reviewed

J.C. Rendón-Angeles, A. Yoko, G. Seong, T. Tomai, T. Adschiri

The Journal of Supercritical Fluids　192　105810-105810　2023/01

DOI： 10.1016/j.supflu.2022.105810 　

ISSN： 0896-8446

Structure and properties of silicon nano- and microparticles obtained by electric-spark dispersion method Peer-reviewed

Ruslan A. Sergiienko, Bogdan I. Ilkiv, Svitlana S. Petrovska, Kostiantyn G. Lopatko, Serafym K. Lopatko, Kateryna V. Vinarchuk, Yuichiro Hayasaka, Takaaki Tomai, Anatolii M. Verkhovliuk, Yaroslav V. Zaulychnyy

Molecular Crystals and Liquid Crystals　752　(1)　112-127　2022/06/25

DOI： 10.1080/15421406.2022.2091278 　

ISSN： 1542-1406

eISSN： 1563-5287

Graphene and Polyethyleneimine Bilayer Wrapping onto Quinone Molecular Crystal Cathode Materials for Aqueous Zinc-Ion Batteries Peer-reviewed

Hiroaki Kobayashi, Kotaro Oizumi, Takaaki Tomai, Itaru Honma

ACS Applied Energy Materials　5　(4)　4707-4711　2022/04/25

DOI： 10.1021/acsaem.2c00134 　

ISSN： 2574-0962

eISSN： 2574-0962

One-Pot Solvothermal Synthesis of Spinel MgFe2O4 Nanoparticles as a Promising Cathode Material for Rechargeable Mg-ion Battery

Vinay Gangaraju, Kunal Roy, Mahesh Shastri, Navya Rani Marilingaiah, Manjunath Shetty, Hiroaki Kobayashi, Takaaki Tomai, Prasanna D. Shivaramu, Dinesh Rangappa

Springer Proceedings in Materials　99-112　2022/04/03

DOI： 10.1007/978-981-16-7554-6_8 　

ISSN： 2662-3161

eISSN： 2662-317X

Supercritical Hydrothermal Synthesis of Organic-Modified Ce1-xZrxO2-delta (0 <= x <= 1) Nanoparticles as a Low-Temperature Oxygen Carrier

Akira Yoko, Thunyapong Kamonvarapitak, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

CHEMNANOMAT　8　(4)　2022/04

DOI： 10.1002/cnma.202100495 　

ISSN： 2199-692X

Uniform Organically Modified CeO₂ Nanoparticles Synthesized from a Carboxylate Complex under Supercritical Hydrothermal Conditions: Impact of Ce Valence Peer-reviewed

Yuki Omura, Akira Yoko, Gimyeong Seong, Maiko Nishibori, Kakeru Ninomiya, Takaaki Tomai, Tadafumi Adschiri

The Journal of Physical Chemistry C　2022/03/24

DOI： 10.1021/acs.jpcc.2c00088 　

ISSN： 1932-7447

eISSN： 1932-7455

One-Pot Super Critical Fluid Synthesis of Spinel MnFe2O4 Nanoparticles and its Application as Anode Material for Mg-ion Battery

Vinay Gangaraju, Tathagata Sardar, Kunal Roy, Mahesh Shastri, Manjunath Shetty, Murthy Muniyappa, Hiroaki Kobayashi, Takaaki Tomai, Ananda Kumar C S, Prasanna D. Shivaramu, Dinesh Rangappa

Asian Journal of Chemistry　34　(4)　989-994　2022

DOI： 10.14233/ajchem.2022.23642 　

ISSN： 0970-7077

eISSN： 0975-427X

Rapid, one-step fabrication of MoS2 electrocatalysts by hydrothermal electrodeposition Peer-reviewed

Yuta Nakayasu, Hiroaki Kobayashi, Shusuke Katahira, Takaaki Tomai, Itaru Honma

Electrochemistry Communications　134　107180-107180　2022/01

DOI： 10.1016/j.elecom.2021.107180 　

ISSN： 1388-2481

Direct evidence for highly developed graphene in PAN-based carbon fibers Peer-reviewed

Kiminori Ono, Takaaki Tomai, Takafumi Ishii, Kosuke Kurushima, Shin Inamoto, Benjamin H. Rutz, Fumihiko Tanaka

Carbon Trends　5　100136-100136　2021/10

DOI： 10.1016/j.cartre.2021.100136 　

ISSN： 2667-0569

Facile Regeneration Strategy for Facet-Controlled Nanocatalysts via the Dissolution–Reprecipitation Process Promoted by an Organic Modifier

Takaaki Tomai, Liangyu Tang, Akira Yoko, Yuki Omura, Gimyeong Seong, Tadafumi Adschiri

Chemistry of Materials　33　(19)　7780-7784　2021/09/13

DOI： 10.1021/acs.chemmater.1c02145 　

ISSN： 0897-4756

eISSN： 1520-5002

Nucleation and Coalescence of BaTiO3 Using a Continuous Flow Reactor with Water–Ethanol Mixed Solvents

Akira Yoko, Hiroki Naito, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

The Journal of Physical Chemistry C　125　(35)　19489-19496　2021/08/27

DOI： 10.1021/acs.jpcc.1c04914 　

ISSN： 1932-7447

eISSN： 1932-7455

Utilization of Sub- and Supercritical Water for Nano-Catalyst Synthesis and Waste and Biomass Processing

Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

Waste and Biomass Valorization　13　(1)　51-66　2021/06/18

DOI： 10.1007/s12649-021-01483-1 　

ISSN： 1877-2641

eISSN： 1877-265X

Silk cocoon derived carbon and sulfur nanosheets as cathode material for Li-S battery application

Mahesh Shastri, Jagadeesh Babu Sriramoju, Murthy Muniyappa, Manjunath Shetty, Vinay Gangaraju, Muralidhar Sindhu Sree, Navyarani Marlingaiah, Hiroaki Kobayashi, Takaaki Tomai, Itaru Honma, Prasanna D. Shivaramu, S. V. Lokesh, Dinesh Rangappa

EMERGENT MATERIALS　4　(5)　1329-1337　2021/05

DOI： 10.1007/s42247-021-00218-1 　

ISSN： 2522-5731

eISSN： 2522-574X

Fabrication of Liquid Scintillators Loaded with 6-PhenylhexaNoic Acid-Modified ZrO2 Nanoparticles for Observation of Neutrinoless Double Beta Decay Peer-reviewed

Akito Watanabe, Arisa Magi, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri, Yamato Hayashi, Masanori Koshimizu, Yutaka Fujimoto, Keisuke Asai

Nanomaterials　11　(5)　1124-1124　2021/04/27

DOI： 10.3390/nano11051124 　

eISSN： 2079-4991

Optimization of phosphor concentration of surface‐modified Bi2O3 nanoparticle‐loaded plastic scintillators for high‐energy photon detection Peer-reviewed

Arisa Magi, Masanori Koshimizu, Akito Watanabe, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri, Rie Haruki, Fumihiko Nishikido, Shunji Kishiomto, Yutaka Fujimoto, Keisuke Asai

Journal of Materials Science: Materials in Electronics　32　(6)　7987-7999　2021/03

DOI： 10.1007/s10854-021-05522-4 　

ISSN： 0957-4522

eISSN： 1573-482X

Optimization of phosphor concentration in 3-PPA-modified Bi₂O₃ nanoparticle-loaded PVK-based plastic scintillators for high count rate X-ray measurements

Magi Arisa, Koshimizu Masanori, Watanabe Akito, Sato Atsushi, Yoko Akira, Seong Gimyeong, Tomai Takaaki, Adschiri Tadafumi, Kishimoto Shunji, Nishikido Fumihiko, Fujimoto Yutaka, Asai Keisuke

JSAP Annual Meetings Extended Abstracts　2021.1　519-519　2021/02/26

DOI： 10.11470/jsapmeeting.2021.1.0_519 　

eISSN： 2436-7613

Development of 6-phenylhexanoic acid-modified ZrO₂ nanoparticles loaded liquid scintillator for double beta-decay experiments

Watanabe Akito, Magi Arisa, Yoko Akira, Seong Gimyeong, Tomai Takaaki, Adschiri Tadafumi, Hayashi Yamato, Koshimizu Masanori, Fujimoto Yutaka, Asai Keisuke

JSAP Annual Meetings Extended Abstracts　2021.1　522-522　2021/02/26

DOI： 10.11470/jsapmeeting.2021.1.0_522 　

eISSN： 2436-7613

Mechanisms of the surface reaction and crystal growth of cerium oxide by supercritical hydrothermal treatment with carboxylic acids

Yuki Omura, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

CrystEngComm　23　(31)　5353-5361　2021

DOI： 10.1039/d1ce00720c 　

eISSN： 1466-8033

Atomistic origin of high-concentration Ce3+ in {100}-faceted Cr-substituted CeO2 nanocrystals Peer-reviewed

Xiaodong Hao, Akira Yoko, Kazutoshi Inoue, Yang Xu, Mitsuhiro Saito, Chunlin Chen, Gimyeong Seong, Takaaki Tomai, Seiichi Takami, Alexander L. Shluger, Bingshe Xu, Tadafumi Adschiri, Yuichi Ikuhara

Acta Materialia　203　116473-116473　2021/01

DOI： 10.1016/j.actamat.2020.11.015 　

ISSN： 1359-6454

Solvent accommodation effect on dispersibility of metal oxide nanoparticle with chemisorbed organic shell Peer-reviewed

Takaaki Tomai, Naoya Tajima, Motoyuki Kimura, Akira Yoko, Gimyeong Seong, Tadafumi Adschiri

Journal of Colloid and Interface Science　587　574-580　2020/11

DOI： 10.1016/j.jcis.2020.11.014 　

ISSN： 0021-9797

eISSN： 1095-7103

Electrical Conductivity-Relay between Organic Charge-Transfer and Radical Salts toward Conductive Additive-Free Rechargeable Battery Peer-reviewed

Yui Fujihara, Hiroaki Kobayashi, Shinya Takaishi, Takaaki Tomai, Masahiro Yamashita, Itaru Honma

ACS Applied Materials & Interfaces　12　(23)　25748-25755　2020/05

DOI： 10.1021/acsami.0c03642 　

ISSN： 1944-8244

eISSN： 1944-8252

Core–shell structure formation strategy with hydrothermal synthesis: Importance of seeds, precursor concentration, and heterogeneous reaction Peer-reviewed

Akira Yoko, Sho Okabe, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

Journal of Supercritical Fluids　159　2020/05/01

DOI： 10.1016/j.supflu.2019.104749 　

ISSN： 0896-8446

Defect-rich exfoliated MoSe<inf>2</inf> nanosheets by supercritical fluid process as an attractive catalyst for hydrogen evolution in water Peer-reviewed

Quang Duc Truong, Yuta Nakayasu, Quyen T. Nguyen, Duc N. Nguyen, Chuc T. Nguyen, Murukanahally Kempaiah Devaraju, Dinesh Rangappa, Keiichiro Nayuki, Yoshikazu Sasaki, Phong D. Tran, Takaaki Tomai, Itaru Honma

Applied Surface Science　505　2020/03/01

DOI： 10.1016/j.apsusc.2019.144537 　

ISSN： 0169-4332

Bottom-up synthesis of graphene via hydrothermal cathodic reduction Peer-reviewed

Takaaki Tomai, Yuta Nakayasu, Yusuke Okamura, Shunichi Ishiguro, Naoki Tamura, Shusuke Katahira, Itaru Honma

Carbon　158　131-136　2020/03

DOI： 10.1016/j.carbon.2019.11.052 　

ISSN： 0008-6223

Mixing and Solvent Effects on Kinetics of Supercritical Hydrothermal Synthesis: Reaction of Nickel Nitrate to Nickel Oxide Peer-reviewed

Akira Yoko, Yutaro Tanaka, Gimyeong Seong, Daisuke Hojo, Takaaki Tomai, Tadafumi Adschiri

The Journal of Physical Chemistry C　124　(8)　4772-4780　2020/02/27

DOI： 10.1021/acs.jpcc.9b09138 　

ISSN： 1932-7447

eISSN： 1932-7455

Interconnected 3D Framework of CeO2 with High Oxygen Storage Capacity: High-Resolution Scanning Electron Microscopic Observation International-journal Peer-reviewed

Jinfeng Lu, Shunsuke Asahina, Seiichi Takami, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

ACS Applied Nano Materials　3　(3)　2346-2353　2020/02/05

DOI： 10.1021/acsanm.9b02446 　

eISSN： 2574-0970

Highly Cr-Substituted CeO2 Nanoparticles Synthesized Using a Non-equilibrium Supercritical Hydrothermal Process: High Oxygen Storage Capacity Materials Designed for a Low-Temperature Bitumen Upgrading Process

Yuanzheng Zhu, Gimyeong Seong, Takio Noguchi, Akira Yoko, Takaaki Tomai, Seiichi Takami, Tadafumi Adschiri

ACS APPLIED ENERGY MATERIALS　3　(5)　4305-4319　2020

DOI： 10.1021/acsaem.0c00026 　

ISSN： 2574-0962

Continuous Flow Synthesis of Nanoparticles Using Supercritical Water: Process Design, Surface Control, and Nanohybrid Materials Peer-reviewed

A Yoko, G Seong, T Tomai, T Adschiri

KONA Powder and Particle Journal　(37)　28-41　2020

DOI： 10.14356/kona.2020002 　

ISSN： 0288-4534

Dispersion and rheology of nanofluids with various concentrations of organic modified nanoparticles: Modifier and solvent effects Peer-reviewed

Muhammad Zamir Hossain, Daisuke Hojo, Akira Yoko, Gimyeong Seong, Nobuaki Aoki, Takaaki Tomai, Seiichi Takami, Tadafumi Adschiri

Colloids and Surfaces A: Physicochemical and Engineering Aspects　583　(20)　123876　2019/12/20

DOI： 10.1016/j.colsurfa.2019.123876 　

ISSN： 0927-7757

eISSN： 1873-4359

Development of liquid scintillators loaded with organically modified ZrO₂ nanoparticles for detection of neutrinoless double-beta decay

Watanabe Akito, Magi Arisa, Yoko Akira, Seong Gimyeong, Tomai Takaaki, Adschiri Tadafumi, Koshimizu Masanori, Fujimoto Yutaka, Asai Keisuke

JSAP Annual Meetings Extended Abstracts　2019.2　399-399　2019/09/04

DOI： 10.11470/jsapmeeting.2019.2.0_399 　

eISSN： 2436-7613

Process assessments for low-temperature methane reforming using oxygen carrier metal oxide nanoparticles Peer-reviewed

Akira Yoko, Yasuhiro Fukushima, Tadaaki Shimizu, Yasunori Kikuchi, Teruyuki Shimizu, Alexander Guzman-Urbina, Kakeru Ouchi, Haruka Hirai, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

Chemical Engineering and Processing - Process Intensification　142　107531　2019/08

DOI： 10.1016/j.cep.2019.107531 　

ISSN： 0255-2701

Fabrication of FeO <inf>x</inf> -ZrO <inf>2</inf> nanostructures for automotive three-way catalysts by supercritical hydrothermal synthesis with supercritical CO <inf>2</inf> drying Peer-reviewed

Gimyeong Seong, Tsutomu Aida, Yoshino Nakagawa, Tetsuya Nanba, Osamu Okada, Akira Yoko, Takaaki Tomai, Seiichi Takami, Tadafumi Adschiri

Journal of Supercritical Fluids　147　302-309　2019/05

DOI： 10.1016/j.supflu.2018.11.015 　

ISSN： 0896-8446

Formation dynamics of mesocrystals composed of organically modified CeO<inf>2</inf> nanoparticles: Analogy to a particle formation model Peer-reviewed

Andrzej Alexander Litwinowicz, Seiichi Takami, Shunsuke Asahina, Xiaodong Hao, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Tadafumi Adschiri

CrystEngComm　21　(25)　3836-3843　2019

DOI： 10.1039/c9ce00473d 　

eISSN： 1466-8033

Development of liquid scintillators loaded with alkaline earth molybdate nanoparticles for detection of neutrinoless double-beta decay Peer-reviewed

Sae Arai, Takio Noguchi, Tsutomu Aida, Akira Yoko, Takaaki Tomai, Tadafumi Adschiri, Masanori Koshimizu, Yutaka Fujimoto, Keisuke Asai

Journal of the Ceramic Society of Japan　127　(1)　28-34　2019/01

DOI： 10.2109/jcersj2.18146 　

ISSN： 1882-0743

eISSN： 1348-6535

Rapid synthesis of defective and composition-controlled metal chalcogenide nanosheets by supercritical hydrothermal processing Peer-reviewed

Yuta Nakayasu, Siobhan Bradley, Hiroaki Kobayashi, Keiichiro Nayuki, Yoshikazu Sasaki, Takaaki Tomai, Thomas Nann, Itaru Honma

Nanoscale Advances　1　(9)　3383-3387　2019

DOI： 10.1039/c9na00435a 　

eISSN： 2516-0230

One-Pot Rapid Synthesis of Mo(S,Se)<inf>2</inf> Nanosheets on Graphene for Highly Efficient Hydrogen Evolution Peer-reviewed

Yuta Nakayasu, Yoji Yasui, Ryosuke Taniki, Kotaro Oizumi, Hiroaki Kobayashi, Naoka Nagamura, Takaaki Tomai, Itaru Honma

ACS Sustainable Chemistry and Engineering　6　(9)　11502-11510　2018/09/04

DOI： 10.1021/acssuschemeng.8b01614 　

eISSN： 2168-0485

Analysis of Degradation Mechanisms in Quinone-Based Electrodes for Aqueous Electrolyte System via in Situ XRD Measurements Peer-reviewed

Takaaki Tomai, Hiroshi Hyodo, Daiki Komatsu, Itaru Honma

Journal of Physical Chemistry C　122　(5)　2461-2466　2018/02/08

DOI： 10.1021/acs.jpcc.7b08124 　

ISSN： 1932-7455 1932-7447

eISSN： 1932-7455

Inversion domain boundaries in MoSe<inf>2</inf> layers Peer-reviewed

Quang Duc Truong, Nguyen Tuan Hung, Yuta Nakayasu, Keiichiro Nayuki, Yoshikazu Sasaki, Devaraju Murukanahally Kempaiah, Li Chang Yin, Takaaki Tomai, Riichiro Saito, Itaru Honma

RSC Advances　8　(58)　33391-33397　2018

DOI： 10.1039/c8ra07205a 　

eISSN： 2046-2069

Capacity improvement of the carbon-based electrochemical capacitor by zigzag-edge introduced graphene Peer-reviewed

Naoki Tamura, Takaaki Tomai, Nobuto Oka, Itaru Honma

APPLIED SURFACE SCIENCE　428　986-989　2018/01

DOI： 10.1016/j.apsusc.2017.09.187 　

ISSN： 0169-4332

eISSN： 1873-5584

Synthesis of ZrO2 nanoparticles for liquid scintillators used in the detection of neutrinoless double beta decay Peer-reviewed

Susumu Takigawa, Masanori Koshimizu, Takio Noguchi, Tsutomu Aida, Seiichi Takami, Tadafumi Adschiri, Yutaka Fujimoto, Akira Yoko, Gimyeong Seong, Takaaki Tomai, Keisuke Asai

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY　314　(2)　611-615　2017/11

DOI： 10.1007/s10967-017-5392-x 　

ISSN： 0236-5731

eISSN： 1588-2780

Fabrication of Cu2ZnSnS4 thin films using a Cu-Zn-Sn-O amorphous precursor and supercritical fluid sulfurization Peer-reviewed

Yuta Nakayasu, Takaaki Tomai, Nobuto Oka, Kanako Shojiki, Shigeyuki Kuboya, Ryuji Katayama, Liwen Sang, Masatomo Sumiya, Itaru Honma

THIN SOLID FILMS　638　244-250　2017/09

DOI： 10.1016/j.tsf.2017.07.063 　

ISSN： 0040-6090

Structure-Based Selective Adsorption of Graphene on a Gel Surface: Toward Improving the Quality of Graphene Nanosheets Peer-reviewed

Takaaki Tomai, Shunichi Ishiguro, Naoki Tamura, Yuta Nakayasu, Itaru Honma

LANGMUIR　33　(22)　5406-5411　2017/06

DOI： 10.1021/acs.langmuir.7b00254 　

ISSN： 0743-7463

Fabrication of three-dimensional CuInS2 solar-cell structure via supercritical fluid processing Peer-reviewed

Takaaki Tomai, Yoji Yasui, Shinji Watanabe, Yuta Nakayasu, Liwen Sang, Masatomo Sumiya, Takeshi Momose, Itaru Honma

JOURNAL OF SUPERCRITICAL FLUIDS　120　448-452　2017/02

DOI： 10.1016/j.supflu.2016.05.026 　

ISSN： 0896-8446

eISSN： 1872-8162

High-energy-density electrochemical flow capacitors containing quinone derivatives impregnated in nanoporous carbon beads Peer-reviewed

Takaaki Tomai, Hayate Saito, Itaru Honma

JOURNAL OF MATERIALS CHEMISTRY A　5　(5)　2188-2194　2017/02

DOI： 10.1039/c6ta08733g 　

ISSN： 2050-7488

eISSN： 2050-7496

An organic proton battery employing two redox-active quinones trapped within the nanochannels of zeolite-templated carbon Peer-reviewed

Khanin Nueangnoraj, Takaaki Tomai, Hiromoto Nishihara, Takashi Kyotani, Itaru Honma

Carbon　107　831-836　2016/06

DOI： 10.1016/j.carbon.2016.06.096 　

ISSN： 0008-6223

Fabrication of CuInSe2 and Cu2ZnSnSe4 films from metal-oxide precursors and SeO2 using supercritical ethanol Peer-reviewed

Takaaki Tomai, Yuta Nakayasu, Miki Yanaka, Itaru Honma

JOURNAL OF SUPERCRITICAL FLUIDS　101　48-53　2015/06

DOI： 10.1016/j.supflu.2015.03.003 　

ISSN： 0896-8446

eISSN： 1872-8162

Controllable bandgap of Cu2ZnSn(S,Se)(4) thin films via simultaneous supercritical fluid chalcogenization Peer-reviewed

Yuta Nakayasu, Takaaki Tomai, Nobuto Oka, Itaru Honma

APPLIED PHYSICS EXPRESS　8　(2)　021201　2015/02

DOI： 10.7567/APEX.8.021201 　

ISSN： 1882-0778

eISSN： 1882-0786

Enhancement of energy density in organic redox capacitor by improvement of electric conduction network Peer-reviewed

Daiki Komatsu, Takaaki Tomai, Itaru Honma

JOURNAL OF POWER SOURCES　274　412-416　2015/01

DOI： 10.1016/j.jpowsour.2014.10.069 　

ISSN： 0378-7753

eISSN： 1873-2755

Structural Analysis and Electrochemical Performance of Li2CoPO4F Cathode Materials Peer-reviewed

Quang Duc Truong, Murukanahally K. Devaraju, Yoshiyuki Ganbe, Takaaki Tomai, Itaru Honma

ELECTROCHIMICA ACTA　127　245-251　2014/05

DOI： 10.1016/j.electacta.2014.02.026 　

ISSN： 0013-4686

eISSN： 1873-3859

Relocation of Cobalt Ions in Electrochemically Delithiated LiCoPO4 Cathode Materials Peer-reviewed

Quang Duc Truong, Murukanahally Kempaiah Deyaraju, Yoshikazu Sasaki, Hiroshi Hyodo, Takaaki Tomai, Itaru Honma

CHEMISTRY OF MATERIALS　26　(9)　2770-2773　2014/05

DOI： 10.1021/cm501452p 　

ISSN： 0897-4756

eISSN： 1520-5002

Controlling the shape of LiCoPO4 nanocrystals by supercritical fluid process for enhanced energy storage properties Peer-reviewed

Quang Duc Truong, Murukanahally Kempaiah Devaraju, Yoshiyuki Ganbe, Takaaki Tomai, Itaru Honma

SCIENTIFIC REPORTS　4　2014/02

DOI： 10.1038/srep03975 　

ISSN： 2045-2322

Supercritical fluid methods for synthesizing cathode materials towards lithium ion battery applications Peer-reviewed

M. K. Devaraju, Q. D. Truong, T. Tomai, I. Honma

RSC ADVANCES　4　(52)　27452-27470　2014

DOI： 10.1039/c4ra01772b 　

ISSN： 2046-2069

Metal-free aqueous redox capacitor via proton rocking-chair system in an organic-based couple Peer-reviewed

Takaaki Tomai, Satoshi Mitani, Daiki Komatsu, Yuji Kawaguchi, Itaru Honma

SCIENTIFIC REPORTS　4　2014/01

DOI： 10.1038/srep03591 　

ISSN： 2045-2322

Supercritical fluid assisted synthesis of N-doped graphene nanosheets and their capacitance behavior in ionic liquid and aqueous electrolytes Peer-reviewed

Marappan Sathish, Satoshi Mitani, Takaaki Tomai, Itaru Honma

JOURNAL OF MATERIALS CHEMISTRY A　2　(13)　4731-4738　2014

DOI： 10.1039/c3ta15136k 　

ISSN： 2050-7488

eISSN： 2050-7496

Antisite defects in LiCoPO4 nanocrystals synthesized via a supercritical fluid process Peer-reviewed

Murukanahally Kempaiah Devaraju, Quang Duc Truong, Takaaki Tomai, Hiroshi Hyodo, Yoshikazu Sasaki, Itaru Honma

RSC ADVANCES　4　(94)　52410-52414　2014

DOI： 10.1039/c4ra10689j 　

ISSN： 2046-2069

Analysis of selenization in supercritical ethanol for the production of compound semiconductor films Peer-reviewed

Takaaki Tomai, Miki Yanaka, Itaru Honma

JOURNAL OF SUPERCRITICAL FLUIDS　83　41-46　2013/11

DOI： 10.1016/j.supflu.2013.08.013 　

ISSN： 0896-8446

eISSN： 1872-8162

Supercritical hydrothermal synthesis of rod like Li2FeSiO4 particles for cathode application in lithium ion batteries Peer-reviewed

M. K. Devaraju, Takaaki Tomai, Itaru Honma

ELECTROCHIMICA ACTA　109　75-81　2013/10

DOI： 10.1016/j.electacta.2013.07.056 　

ISSN： 0013-4686

eISSN： 1873-3859

Direct Observation of Antisite Defects in LiCoPO4 Cathode Materials by Annular Dark- and Bright-Field Electron Microscopy Peer-reviewed

Quang Duc Truong, Murukanahally Kempaiah Devaraju, Takaaki Tomai, Itaru Honma

ACS APPLIED MATERIALS & INTERFACES　5　(20)　9926-9932　2013/10

DOI： 10.1021/am403018n 　

ISSN： 1944-8244

One-Step Production of Anisotropically Etched Graphene Using Supercritical Water Peer-reviewed

Takaaki Tomai, Naoki Tamura, Itaru Honma

ACS MACRO LETTERS　2　(9)　794-798　2013/09

DOI： 10.1021/mz400186t 　

ISSN： 2161-1653

Pt sub-nano/nanoclusters stabilized at the edge of nanographene sheets and their catalytic performance Peer-reviewed

Takaaki Tomai, Yuji Kawaguchi, Satoshi Mitani, Itaru Honma

ELECTROCHIMICA ACTA　92　421-426　2013/03

DOI： 10.1016/J.electacta.2013.01.067 　

ISSN： 0013-4686

Novel processing of lithium manganese silicate nanomaterials for Li-ion battery applications Peer-reviewed

Murukanahally Kempaiah Devaraju, Takaaki Tomai, Atsushi Unemoto, Itaru Honma

RSC ADVANCES　3　(2)　608-615　2013

DOI： 10.1039/c2ra22409g 　

ISSN： 2046-2069

X-Ray Emission Spectra of Graphene Nanosheets Peer-reviewed

Bogdan Ilkiv, Svitlana Petrovska, Ruslan Sergiienko, Takaaki Tomai, Etsuro Shibata, Takashi Nakamura, Itaru Honma, Yaroslav Zaulychnyy

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY　12　(12)　8913-8919　2012/12

DOI： 10.1166/jnn.2012.6787 　

ISSN： 1533-4880

Graphene anchored with Fe3O4 nanoparticles as anode for enhanced Li-ion storage Peer-reviewed

Marappan Sathish, Takaaki Tomai, Itaru Honma

JOURNAL OF POWER SOURCES　217　85-91　2012/11

DOI： 10.1016/j.jpowsour.2012.05.099 　

ISSN： 0378-7753

eISSN： 1873-2755

Mass transport properties in quasi-solidified lithium-ion conducting ionic liquids at oxide particle surfaces Peer-reviewed

Atsushi Unemoto, Yoshiki Iwai, Satoshi Mitani, Seung-Wook Baek, Seitaro Ito, Takaaki Tomai, Junichi Kawamura, Itaru Honma

SOLID STATE IONICS　225　416-419　2012/10

DOI： 10.1016/j.ssi.2012.01.020 　

ISSN： 0167-2738

Nanographene production from platelet carbon nanofiber by supercritical fluid exfoliation Peer-reviewed

Takaaki Tomai, Yuji Kawaguchi, Itaru Honma

APPLIED PHYSICS LETTERS　100　(23)　2012/06

DOI： 10.1063/1.4726113 　

ISSN： 0003-6951

Ultrathin SnS2 Nanoparticles on Graphene Nanosheets: Synthesis, Characterization, and Li-Ion Storage Applications Peer-reviewed

Marappan Sathish, Satoshi Mitani, Takaaki Tomai, Itaru Honma

JOURNAL OF PHYSICAL CHEMISTRY C　116　(23)　12475-12481　2012/06

DOI： 10.1021/jp303121n 　

ISSN： 1932-7447

Application of quasi-solid-state silica nanoparticles-ionic liquid composite electrolytes to all-solid-state lithium secondary battery Peer-reviewed

Seitaro Ito, Atsushi Unemoto, Hideyuki Ogawa, Takaaki Tomai, Itaru Honma

JOURNAL OF POWER SOURCES　208　271-275　2012/06

DOI： 10.1016/j.jpowsour.2012.02.049 　

ISSN： 0378-7753

Nanocrystalline tin compounds/graphene nanocomposite electrodes as anode for lithium-ion battery Peer-reviewed

Marappan Sathish, Satoshi Mitani, Takaaki Tomai, Atsushi Unemoto, Itaru Honma

JOURNAL OF SOLID STATE ELECTROCHEMISTRY　16　(5)　1767-1774　2012/05

DOI： 10.1007/s10008-012-1669-8 　

ISSN： 1432-8488

eISSN： 1433-0768

Nanographene derived from carbon nanofiber and its application to electric double-layer capacitors Peer-reviewed

Satoshi Mitani, Marappan Sathish, Dinesh Rangappa, Atsushi Unemoto, Takaaki Tomai, Itaru Honma

ELECTROCHIMICA ACTA　68　146-152　2012/04

DOI： 10.1016/j.electacta.2012.02.034 　

ISSN： 0013-4686

Ultrathin Nanosheets of Li2MSiO4 (M = Fe, Mn) as High-Capacity Li-Ion Battery Electrode Peer-reviewed

Dinesh Rangappa, Kempaiah Devaraju Murukanahally, Takaaki Tomai, Atsushi Unemoto, Itaru Honma

NANO LETTERS　12　(3)　1146-1151　2012/03

DOI： 10.1021/nl202681b 　

ISSN： 1530-6984

Electrical conductivity and dynamics of quasi-solidified lithium-ion conducting ionic liquid at oxide particle surfaces Peer-reviewed

Atsushi Unemoto, Yoshiki Iwai, Satoshi Mitani, Seung-Wook Baek, Seitaro Ito, Takaaki Tomai, Junichi Kawamura, Itaru Honma

SOLID STATE IONICS　201　(1)　11-20　2011/10

DOI： 10.1016/j.ssi.2011.08.008 　

ISSN： 0167-2738

eISSN： 1872-7689

Low-Temperature Direct Conversion of Cu-In Films to CuInSe2 via Selenization Reaction in Supercritical Fluid Peer-reviewed

Takaaki Tomai, Dinesh Rangappa, Itaru Honma

ACS APPLIED MATERIALS & INTERFACES　3　(9)　3268-3271　2011/09

DOI： 10.1021/am200899q 　

ISSN： 1944-8244

Generation of laser-induced plasma in supercritical water and vibrational spectroscopic study of accompanying stimulated Raman scattering Peer-reviewed

Hiroharu Yui, Takaaki Tomai, Masayoshi Sawada, Kazuo Terashima

APPLIED PHYSICS LETTERS　99　(9)　2011/08

DOI： 10.1063/1.3627161 　

ISSN： 0003-6951

MnO2 assisted oxidative polymerization of aniline on graphene sheets: Superior nanocomposite electrodes for electrochemical supercapacitors Peer-reviewed

Marappan Sathish, Satoshi Mitani, Takaaki Tomai, Itaru Honma

JOURNAL OF MATERIALS CHEMISTRY　21　(40)　16216-16222　2011

DOI： 10.1039/c1jm12946e 　

ISSN： 0959-9428

Development of sheet-like dielectric barrier discharge microplasma generated in supercritical fluids and its application to the synthesis of carbon nanomaterials Peer-reviewed

Hirokazu Kikuchi, Sven Stauss, Sho Nakahara, Fumiyoshi Matsubara, Takaaki Tomai, Takehiko Sasaki, Kazuo Terashima

JOURNAL OF SUPERCRITICAL FLUIDS　55　(1)　325-332　2010/11

DOI： 10.1016/j.supflu.2010.05.029 　

ISSN： 0896-8446

Development of a dielectric-barrier discharge enhanced microplasma jet Peer-reviewed

Shinya Kiriu, Hiroyuki Miyazoe, Fumitoshi Takamine, Masaki Sai, Jai Hyuk Choi, Takaaki Tomai, Kazuo Terashima

APPLIED PHYSICS LETTERS　94　(19)　2009/05

DOI： 10.1063/1.3130183 　

ISSN： 0003-6951

Raman spectroscopy of reaction fields induced by plasma in supercritical CO2 Peer-reviewed

Takaaki Tomai, Hiroharu Yui, Kazuo Terashima

APPLIED PHYSICS LETTERS　94　(15)　2009/04

DOI： 10.1063/1.3116622 　

ISSN： 0003-6951

Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution Peer-reviewed

Yukinori Sakiyama, Takaaki Tomai, Masaru Miyano, David B. Graves

APPLIED PHYSICS LETTERS　94　(16)　2009/04

DOI： 10.1063/1.3122148 　

ISSN： 0003-6951

Gas-temperature-dependent generation of cryoplasma jet under atmospheric pressure Peer-reviewed

Yuri Noma, Jai Hyuk Choi, Takaaki Tomai, Kazuo Terashima

APPLIED PHYSICS LETTERS　93　(10)　2008/09

DOI： 10.1063/1.2980436 　

ISSN： 0003-6951

Development of a dielectric barrier discharge (DBD) cryo-microplasma: generation and diagnostics Peer-reviewed

Daisuke Ishihara, Yuri Noma, Sven Stauss, Masaki Sai, Takaaki Tomai, Kazuo Terashima

PLASMA SOURCES SCIENCE & TECHNOLOGY　17　(3)　2008/08

DOI： 10.1088/0963-0252/17/3/035008 　

ISSN： 0963-0252

Temperature-dependent transition of discharge pattern of He/air cryoplasma Peer-reviewed

Jai Hyuk Choi, Yuri Noma, Takaaki Tomai, Kazuo Terashima

APPLIED PHYSICS LETTERS　93　(8)　2008/08

DOI： 10.1063/1.2976308 　

ISSN： 0003-6951

Cu films deposition by dielectric barrier discharge in supercritical CO2, Ar and Xe environments Peer-reviewed

Hirokazu Kikuchi, Hirotake Kubo, Takaaki Tomai, Kazuo Terashima

THIN SOLID FILMS　516　(19)　6677-6682　2008/08

DOI： 10.1016/j.tsf2007.11.042 　

ISSN： 0040-6090

Development and diagnostics of novel materials processing using supercritical fluid plasma generated by space- and time-restricted discharge Peer-reviewed

Takaaki Tomai, Hirokazu Kikuchi, Sho Nakahara, Hiroharu Yui, Kazuo Terashima

Trans. Mat. Res. Soc. Jpn　33　355-358　2008/05

Gas-temperature-dependent characteristics of cryo-dielectric barrier discharge plasma under atmospheric pressure Peer-reviewed

Yuri Noma, Jai Hyuk Choi, Sven Stauss, Takaaki Tomai, Kazuo Terashima

APPLIED PHYSICS EXPRESS　1　(4)　0460011-0460013　2008/04

DOI： 10.1143/APEX.1.046001 　

ISSN： 1882-0778

Carbon materials syntheses using dielectric barrier discharge microplasma in supercritical carbon dioxide environments Peer-reviewed

Takaaki Tomai, Ken Katahira, Hirotake Kubo, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki, Kazuo Terashima

JOURNAL OF SUPERCRITICAL FLUIDS　41　(3)　404-411　2007/07

DOI： 10.1016/j.supflu.2006.12.003 　

ISSN： 0896-8446

Microplasma synthesis of carbon nanostructured materials Peer-reviewed

Kazuo Terashima, Takaaki Tomai, Daisuke Ishihara, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki, Takeki Sakurai

Adv. Sci. Techno　Vol.48　9月16日　2006/12

Micrometer-scale discharge in high-pressure H2O and Xe environments including supercritical fluid Peer-reviewed

Masayoshi Sawada, Takaaki Tomai, Tsuyoh Ito ito, Hideyuki Fujiwara, Kazuo Terashima

JOURNAL OF APPLIED PHYSICS　100　(12)　2006/12

DOI： 10.1063/1.2400802 　

ISSN： 0021-8979

Generation of dielectric barrier discharge in high-pressure N-2 andCO(2) environments up to supercritical conditions Peer-reviewed

T Tomai, T Ito, K Terashima

THIN SOLID FILMS　506　409-413　2006/05

DOI： 10.1016/j.tsf.2005.08.101 　

ISSN： 0040-6090