Okada Tomohiko
Academic Assembly School of Science and Technology Institute of Engineering
Professor
Researcher Information
Mail Address
- tomohiko★shinshu-u.ac.jp
Web site
Career
Educational Background
Research activity information
Paper
- Clay-Based Polyurethane Foam Nanocomposites for Thermal Insulation
Tomonori Watanabe, Haruna Sasaki, Yuhei Nakashima, Nobuyoshi Miyamoto, Hideki Takamura, Kunihiro Nakano, Tomohiko Okada*
Materials Advances, 10.1039/D5MA00651A, Sep. 2025
- Fabrication of a highly stable Ni-Co bimetallic catalyst for the steam reforming of methane via in situ crystallization of phyllosilicate on porous spherical silica
Ryunosuke Nakamura, Hikari Minamisawa, Tomohiko Okada*
Catalysis Science & Technology, 15, 5857-5863, Aug. 2025 - Stabilisation of iron-oxo dimers in a natural layered clay for efficient photocatalysts comparable to TiO2
Hamza El-Hosainy, Ezz-Elregal M. Ezz-Elregal, Shinichiro Takano, Takumi Miyakage, Duotian Chen, Chenxi He, Takashi Toyao, Ken-ichi Shimizu, Akio Iwanade, Yusuke Ide* and Tomohiko Okada*
Chemical Communications, 61, 5435-5438, 05 Mar. 2025 - Designed functions of oxides/hydroxide nanosheets by elemental replacement/doping
Kanji Saito, Masashi Morita, Tomohiko Okada, Rattanawadee Wijitwongwan, Makoto Ogawa
Chem. Soc. Rev., 53, 10523-10574, Oct. 2024 - Nanoarchitectonics of a cation-exchangeable layered Mg-silicate and its direct crystallization on synthetic fluorophlogopite particles
Tomohiko Okada,* Yuto Sendai, Tomohiko Yamakami, Mai Sueyoshi, Ryuichi Seike
Adv. Powder Technol., 35, 104583, Sep. 2024 - Oxidative Alcohol Dehydrogenation with Small Size of Cobalt Oxide Catalyst Derived from Activated Al2O3-supported Co2+-Al3+ Layered Double Hydroxide
Febi Yusniyanti, Takayoshi Hara, Tomohiko Okada, Takuya Fujimura, Ryo Sasai, Chikako Moriyoshi, Shogo Kawaguchi, Nobuyuki Ichikuini
J. Ion Exchange, 35, 50-56, May 2024 - Formation of moth-eye-like structures on silicon through in situ crystallization of layered Mg silicate
Yuki Nakauchi, Hikari Minamisawa, Tomohiko Okada*
Dalton Trans., 53, 2558-2564, Jan. 2024 - Spherical silica particles coated with lamellar nanocomposites based on a hydrophobic functionalized phyllosilicate
Tomohiko Okada*, Natsuki Taguchi, Sakura Shimomura
Colloid Surf. A, 676, 132135, Jul. 2023 - Acceleration of the dehydrogenation of d-glucose to 2-keto-d-gluconate in aqueous amino acid via hydrated stacked clay nanosheets
Katsunori Nakase, Shunta Ichihara, Jumpei Matsumoto, Sangho Koh, Masahiro Mizuno, Tomohiko Okada*
Langmuir (selected as Supplementary Cover), 38, 6076-6085, May 2022 - Important roles of water clusters confined in a nanospace as revealed by a synchrotron X-ray diffraction study
Tomohiko Okada,* Kana Izumi, Shogo Kawaguchi, Chikako Moriyoshi, Takuya Fujimura, Ryo Sasai, Makoto Ogawa
LANGMUIR, 37, 10469-10480, Aug. 2021 - Monodisperse Clay Microballs for Tuning the Psuedogaps by Adsorption in Amorphous Photonic Structures
Tomohiko Okada,*, Sho Hosoyamada, Chisato Takada, Chiharu Ohta
CHEMPHOTOCHEM, 5, 32-35, 2021 - Unimodal sized silica nanocapsules produced through water-in-oil emulsions prepared by sequential irradiation of kilo- and submega-hertz ultrasounds
Takahiro Nemoto, Toshio Sakai, Tomohiko Okada*
RSC Adv., 11, 22921-22928, 2021
- Electronic Interactions between A Quaternary Pyridyl-beta-diketonate and Anionic Clay Nanosheets Facilitates Intense Photoluminescence.
Tomohiko Okada,* Yoko Miyamoto, Haruka Kurihara, Yoshifumi Mochiduki, Shiho Katsumi, Fuyuki Ito
Photochem. Photobiol. Sci. (selected as Front Cover), 19, 1280-1288, 2020 - A useful method for thorough dehydrochlorination of Poly(vinylidene chloride-co-vinyl chloride) using Zinc(II) oxide
Tomohiiko Okada*, Satoru Sutoh, Kotaro Sejima, Hiroki Tomohara, Shozi Mishima
Polym. Degrad. Stab., 171, 109040, 2020 - Hydrated silicate layer formation on mica-type crystals
Misa Sugiura, Mai Sueyoshi, Ryuichi Seike, Takayoshi Hayashi, Tomohiko Okada*
LANGMUIR, 36, 4933-4941, 2020 - Influence of negative charge distribution and locations of Na+ ions on ionic conductivity of Na-mica
Junnosuke Kemi, Tomohiro Yamaguchi, Tomohiko Okada, Seiichi Taruta
Clay Science, 23, 31-39, 2019 - Pore shape-reflecting morphosynthesis of lithium niobium oxide via mixed chloride flux growth in the presence of mesoporous silica.
Minoru Sohmiya, Shinya Umehara, Shinpei Enomoto, Yusuke Ide, Tomohiko Okada, Yoshiyuki Sugahara, Makoto Ogawa
Nanoscale Adv., 1, 1726-1730, 2019 - A Study of Stereoselective Adsorption in Smectites Using Thin-Layer Chromatography
Kazuki Tajima, Tomohiko Okada,*
Appl. Clay Sci., 70, 13-20, 2019 - Functional groups of organochlorosilanes influenced microporous structure in organosiloxane microcapsules synthesized using a water-in-oil emulsion template
Tomohiko Okada*, Takayuki Aizawa
Bull. Chem. Soc. Jpn., 92(5), 912-917, 2019 - Direct Crystallization of Layered Silicates on the Surface of Amorphous Silica
Tomohiko Okada*
Chem. Rec., 18, 829-839, 2018 - Effect of particle size and local disorder on specific surface area of layered double hydroxides upon calcination-reconstruction.
Bo-Kyung Kim, Gyeong-Hyeon Gwak, Tomohiko Okada,* Jae-Min Oh*
J. Solid State Chem., 263, 60-64, 2018 - Crystal Growth of Layered Silicate Grafted with Organic Groups on Monodisperse Spherical Silica Particles.
Masahiro Yamauchi, Tomohiko Okada*
Clays Clay Miner., 66(2), 104-113, 2018 - Variation in thickness of a layered silicate on spherical silica particles affected HPLC chiral chromatographic resolution.
Tomohiko Okada*, Mutsuki Oguri, Kazuki Tajima, Tomohiko Yamakami, Hisako Sato
Appl. Clay Sci., 163, 72-80, 2018 - Uniform-sized Silica Nanocapsules Produced by Addition of Salts to a W/O Emulsion Template
Tomohiko Okada,* Takashi Koide
LANGMUIR, 34, 9500-9506, 2018 - Photoinduced structural changes of cationic azo dyes confined in two dimensional nanospace by two different mechanisms
Tomohiko Okada, Nozomi Nozaki, Jangwon Seo, Ji Eon Kwon, Soo Young Park, Hideo Hashizume, Takayoshi Sasaki, Makoto Ogawa
RSC Adv., 7, 8077-8081, 2017 - Kinetics of Interlayer Expansion of a Layered Silicate Driven by Caffeine Intercalation in the Water Phase Using Transmission X–ray Diffraction
Tomohiko Okada*, Takumi Yoshida, Taku Iiyama*
J. Phys. Chem. B, 121, 6919-6925, 2017 - Photoluminescence by Intercalation of a Fluorescent beta-Diketone Dye into a Layered Silicate
Mutsumi Hirose, Fuyuki Ito, Tetsuya Shimada, Shinsuke Takagi, Ryo Sasai, Tomohiko Okada*
LANGMUIR, 33, 13515-13521, 2017 - An Inorganic Anionic Polymer Filter Disc: Direct Crystallization of a Layered Silicate Nanosheet on a Glass Fiber Filter
Tomohiko Okada*, Kei Shimizu, Tomohiko Yamakami
RSC Adv., 6, 26130-26136, 2016 - Application of Hectorite-Coated Silica Gel Particles as a Packing Material for Chromatographic Resolution
Tomohiko Okada,* Aisaku Kumasaki, Kei Shimizu, Akihiko Yamagishi, Hisako Sato
J. Chromatogr. Sci., 54, 1238-1243, 2016 - Water-Floatable Organosilica Particles for TiO2 Photocatalysis
Yusuke Maki, Yusuke Ide, Tomohiko Okada*
Chem. Eng. J., 299, 367-372, 2016 - Effects of fluoride and urea on the crystal growth of a hectorite-like layered silicate on a silica surface
Tomohiko Okada*, Hanae Kobari, Tetsuji Haeiwa
Appl. Clay Sci., 132-133, 320-325, 2016 - Photochromic intercalation compounds
Tomohiko Okada, Minoru Sohmiya, Makoto Ogawa
Struct. Bond., 166, 177-211, 2015 - Concentration of 2-Phenylphenol by Organoclays from Aqueous Sucrose Solution
Yoko Seki, Yusuke Ide, Tomohiko Okada, Makoto Ogawa
Appl. Clay Sci., 109-110, 64-67, 2015 - Organoclays in water cause expansion that facilitates caffeine adsorption
Tomohiko Okada*, Junpei Oguchi, Kenichiro Yamamoto, Takashi Shiono, Masahiro Fujita., Taku Iiyama
LANGMUIR, 31, 180-187, 2015 - Preparation of Porous Thin-film Polymethylsiloxane Microparticles in a W/O Emulsion System.
Shozi Mishima, Tomohiko Okada, Toshio Sakai, Ryotaro Kiyono, Tetsuji Haeiwa
Polym. J., 47, 449-455, 2015 - Crystal growth of a hectorite-like layered silicate on monodisperse spherical silica particles with different diameters
Tomohiko Okada*, Asuka Suzuki
Clay Sci., 19, 45-51, 2015 - In situ crystallization of Al-containing silicate nanosheets on monodisperse amorphous silica microspheres
Tomohiko Okada*, Mai Sueyoshi, Hikari M. Minamisawa
LANGMUIR, 31, 13842-13849, 2015 - Crystal architectures of a layered silicate on monodisperse spherical silica particles cause the topochemical expansion of the core-shell particles
Tomohiko Okada*, Asuka Suzuki, Shiho Yoshido, Hikari, M. Minamisawa
Microporous Mesoporous Mater., 215, 168-174, 2015
- Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds
Tomohiko Okada, Yoko Seki, Makoto Ogawa
J. Nanosci. Nanotech., 14, 2121-2134, 2014 - Encapsulation of a Polyoxometalate into an Organosilica Microcapsule for Highly Active Solid Acid Catalysis
Tomohiko Okada*, Kazuyoshi Miyamoto, Toshio Sakai, Shozi Mishima
ACS Catal., 4, 73-78, 2014 - Magnetic rattle-type core-shell particles containing iron compounds with acid-tolerance by dense silica.
Tomohiko Okada*, Shoya Ozono, Masami Okamoto, Yohei Takeda, Hikari M. Minamisawa, Tetsuji Haeiwa, Toshio Sakai, Shozi Mishima
Ind. Eng. Chem. Res., 53, 8759-8765, 2014 - Chemically Stable Magnetic Nanoparticles for Metal Adsorption and Solid Acid Catalysis in Aqueous Media.
Tomohiko Okada*, Yohei Takeda, Nodoka Watanabe, Tetsuji Haeiwa, Toshio Sakai, Shozi Mishima
J. Mater. Chem. A, 2(16), 5751-5758, 2014 - Layered Clay Aerogels by A Freeze-Drying Process for A Platinum-Supported Catalyst.
Tomohiko Okada*, Taku Kato, Takeharu Yamaguchi, Toshio Sakai, Shozi Mishima
Ind. Eng. Chem. Res., 52, 12018-12024, 2013 - Block Copolymer-mediated Synthesis of Gold Nanoparticles in Aqueous Solutions: Segment Effect on Gold Ion Reduction, Stabilization and Particle Morphology
Sakai, T., Horiuchi, Y., Alexandridis, P., Okada, T., Mishima S.
J. Colloid Interface Sci., 394, 124-131, 2013 - Titania/CnTAB Nanoskeleton as Adsorbent and Photocatalyst for Removal of Alkylphenols Dissolved in Water
Sakai, T., Da Loves, A., Okada, T., Mishima S.
J. Hazard. Mater., 248-249, 487-495, 2013 - Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles.
Tomohiko Okada*, Y. González-Alfaro, A. Espinosa, Nodoka Watanabe, Tetsuji Haeiwa, Makoto Sonehara, Shozi Mishima, Toshiro Sato, A. Muñoz-Noval, Pilar Aranda, M. Garcia-Hernández, Eduardo Ruiz-Hitzky*
J. Appl. Phys., 114(12), 124304, 2013 - Organic-inorganic hybrids based on ultrathin oxide layers -Designed nanostructures for molecular recognition.
Tomohiko Okada, Yusuke Ide, Makoto Ogawa
Chem. Asian J.,, 7, 1980-1992, 2012 - Swellable Microsphere of a Layered Silicate Produced by Using Monodispersed Silica Particles
Tomohiko Okada*, Shiho Yoshido, Hikari Miura, Tomohiko Yamakami, Toshio Sakai, Shozi Mishima
J. Phys. Chem. C, 116, 21864-21869, 2012 - Characteristics and mechanism of low temperature dehydrochlorination of poly(vinyl chloride) in the presence of zinc(II) oxide
Takashi Kosuda, Tomohiko Okada, Shogo Nozaka, Yukitaka Matsuzawa, Takuya Shimizu, Senji Hamanaka, Shozi Mishima
Polym. Degrad. Stab., 97, 584-591, 2012 - Multi-shaped gold nanoparticles synthesized using an amino-terminated poly(ethylene oxide)–poly(propylene oxide) block copolymer in aqueous solutions
Sakai, T. Ishigaki, M., Okada, T., Mishima, S.
Chem. Lett., 40, 501-502, 2011 - Fabrication of Acid-tolerant Magnetic Co@SiO2 Core-Shell Particles with Dense Silica Shell
Tomohiko Okada, Nodoka Watanabe, Toshio Sakai, Tetsuji Haeiwa, Shozi Mishima
Chem. Lett., 40, 106-107, 2011 - Organo-smectite adsorbents; Designed nanostructures for smart adsorbents
Tomohiko Okada, Makoto Ogawa
Clay Sci., 15, 103-110, 2011 - Vesicle formation in mixture of a PEO-PPO-PEO block copolymer (Pluronic P123) and a nonionic surfactant (Span 65) in water.
Sakai, T. Kurosawa, H., Okada, T., Mishima, S.
Colloid Surf. A, 389, 82-89, 2011 - A Facile Route of Gold Nanoparticle Synthesis and Surface Modification Using Amino-Terminated Poly(ethylene oxide)-Poly(propylene oxide) Block Copolymers
Sakai, T. Ishigaki, M., Okada, T., Mishima, S.
J. Nanosci. Nanotech., 10, 919-926, 2010 - Nanospace engineering inthe interlayer space of hectorite-like layered silicates with varied layer charge density for the adsorbents design
Tomohiko Okada, Takayuki Matsutomo, Makoto Ogawa
J. Phys. Chem. C, 114, 539-545, 2010 - Adsorption of 4-nonylphenol on 1,1’-dioctyl-4,4’-bipyridinium-smectite intercalation compounds from aqueous solution
Tomohiko Okada, Makoto Ogawa
Clay Sci., 14, 191-196, 2010 - One-pot Synthesis of Inorganic-Organic Hollow Microsphere Solid-Acid Catalysts in a W/O Microemulsion System
Tomohiko Okada, Shozi Mishima, Shingo Yoshihara.
Chem. Lett., 39, 32-33, 2009 - Preparation of iron containing hectorite-like swelling silicate
Makoto Ogawa, Takayuki Matsutomo, Tomohiko Okada
Bull. Chem. Soc. Jpn., 82, 408-412, 2009 - Preparation of quaternary diammonium-montmorillonites and their vapor adsorption properties
Yoko Seki, Tomohiko Okada, Makoto Ogawa
Microporous Mesoporous Mater., 129, 30-35, 2009 - Adsorption of tetrakis(p-sulfonatophenyl)porphyrin on kaolinite.
Yusuke Tanaka, Tomohiko Okada, Makoto Ogawa
J. Porous Mater., 16(6), 623-629, 2009 - The effect of the molecular structure of a cationic azo dye on the photoinduced intercalation of phenol in a montmorillonite
Tomohiko Okada, Hideki Sakai, Makoto Ogawa
Appl. Clay Sci., 40, 187-192, 2008 - Preparation of hectorite-like swelling silicate with controlled layer charge density.
Makoto Ogawa, Takayuki Matsutomo, Tomohiko Okada
J. Ceram .Soc. Jpn., 116, 1309-1313, 2008 - Luminescence quenching of tris(2,2’-bipyridine)ruthenium(II) in the interlayer space of saponite by sulfur dioxide
Tomohiko Okada, Takahiro Konno, Makoto Ogawa
Clay Sci., 14, 43-48, 2008 - Adsorption of europium ion on smectites and fluor-tetrasilicic mica
Tomohiko Okada, Yusuke Ehara, Makoto Ogawa
Clays Clay Miner., 55, 348-353, 2007 - Preparation and properties of trans-2-butene-1,4-bis(triphenylphosphonium)-saponite
Yusuke Tanaka, Tomohiko Okada, Makoto Ogawa
J. Porous Mater., 13, 157-161, 2006 - Adsorption and possible luminescence detection of 4-nonylphenol by Eu3+-smectites
Tomohiko Okada, Yusuke Ehara, Makoto Ogawa
Chem. Lett., 35, 638-639, 2006 - Tris(2,2’-bipyridine)ruthenium(II)-clays as adsorbents for phenol and chlorinated phenols from aqueous solution
Tomohiko Okada, Takao Morita, Makoto Ogawa
Appl. Clay Sci., 29, 45-53, 2005 - Photoregulation of adsorption behavior of phenol for azobenzene-clay intercalation compounds
Tomohiko Okada, Yusuke Watanabe, Makoto Ogawa
J. Mater. Chem., 15, 987-992, 2005 - p-Phenylenediammonium-smectites as adsorbents with colorimetric detection ability for phenols in water
Tomohiko Okada, Makoto Ogawa
Bull. Chem. Soc. Jpn., 77, 1165-1170, 2004 - Photocontrol of the adsorption behavior of phenol for azobenzene-montmorillonite intercalation compound
Tomohiko Okada, Yusuke Watanabe, Makoto Ogawa
Chem. Commun., 320-321, 2004 - Adsorption behavior of phenol for mono, bis and tris(2,2’-bipyridine)nickel(II)- and tris(ethylenediamine)nickel(II)-saponite intercalation compounds from aqueous solution
Tomohiko Okada, Takao Morita, Makoto Ogawa
Clay Sci., 12, 277-284, 2004 - 1,1’-Dimethyl-4,4-bipyridinium-smectites as a novel adsorbent of phenols from water through charge-transfer interactions
Tomohiko Okada, Makoto Ogawa
Chem. Commun., 1378-1379, 2003 - Adsorption of phenols onto 1,1’-dimethyl-4,4’-bipyridinium-smectites.
Tomohiko Okada, Makoto Ogawa
Chem. Lett., 31, 812-813, 2002
MISC
Books and other publications
- Inorganic Nanosheets and Nanosheet-Based Materials, Ed. by Nakato, T., Kawamata, J., Takagi, S.
Tomohiko Okada, Makoto Ogawa, Adsorbents derived from layered solids
Springer, 263-301 2017Inorganic Nanosheets and Nanosheet-Based Materials, Ed. by Nakato, T., Kawamata, J., Takagi, S.
Tomohiko Okada, Makoto Ogawa, Inorganic–organic interactions
Springer, 163-186 2017
ISBN:978-4-431-56494-2The Clay Minerals Society Workshop Lectures Series (Materials and Clay Minerals) 18
Makoto Ogawa, Minoru Sohmiya, Norishige Kakegawa, Tomohiko Okada, Immobilization of Organic Dyes on Clays Toward Controlled Photoinduced Events
1-20 2014
ISBN:978-0-8137-9548-5Research Themes
Social activity information