2023年

Formation of moth-eye-like structures on silicon through in situ crystallization of layered Mg silicate

Dalton Trans., 53, 2558-2564 (2024) Yuki Nakauchi, Hikari Minamisawa, Tomohiko Okada*

Spherical silica particles coated with lamellar nanocomposites based on a hydrophobic functionalized phyllosilicate

Colloid Surf. A,676, 132135 (2023) Tomohiko Okada*, Natsuki Taguchi, Sakura Shimomura

2022年

Acceleration of the dehydrogenation of D-glucose to 2-keto-D-gluconate in aqueous amino acid via hydrated stacked clay nanosheets

Langmuir, 38, 6076-6085 2022. Katsunori Nakase, Shunta Ichihara, Jumpei Matsumoto, Sangho Koh, Masahiro Mizuno, Tomohiko Okada*

2021年

Important roles of water clusters confined in a nanospace as revealed by a synchrotron X-ray diffraction study

Langmuir, 37, 10469-10480 2021. Tomohiko Okada,* Kana Izumi, Shogo Kawaguchi, Chikako Moriyoshi, Takuya Fujimura, Ryo Sasai, Makoto Ogawa

Unimodal sized silica nanocapsules produced throught water-in-oil emulsions prepared by sequential irradiation of kilo-and submega-hertz ultrasounds.

RSC Advances, 2021, 11, 22921 - 22928 Nemoto, T.; Sakai, T.; Okada, T.

Monodisperse Clay Microballs for Tuning the Psuedogaps by Adsorption in Amorphous Photonic Structures

ChemPhotoChem, 5, 32-35 (2021) Tomohiko Okada,*, Sho Hosoyamada, Chisato Takada, Chiharu Ohta

2020年

Electronic Interactions between A Quaternary Pyridyl-β-diketonate and Anionic Clay Nanosheets Facilitates Intense Photoluminescence

Photochem. Photobiol. Sci. (selected as Front Cover),19:1280-1288 (2020) Tomohiko Okada,* Yoko Miyamoto, Haruka Kurihara, Yoshifumi Mochiduki, Shiho Katsumi, Fuyuki Ito

Hydrated silicate layer formation on mica-type crystals

Langmuir,36:4933-4941 (2020) Misa Sugiura, Mai Sueyoshi, Ryuichi Seike, Takayoshi Hayashi, Tomohiko Okada*

A useful method for thorough dehydrochlorination of Poly(vinylidene chloride-co-vinyl chloride) using Zinc(II) oxide.

Polym. Degrad. Stab.,171:109040 (2020)171 Okada, T., Sutoh, S., Sejima, K., Tomohara, H., Mishima, S.

2019年

Functional groups of organochlorosilanes influenced microporous structure in organosiloxane microcapsules synthesized using a water-in-oil emulsion template

Bull. Chem. Soc. Jpn.,92(5):912-917 2019 Okada, T., Aizawa, T.

A Study of Stereoselective Adsorption in Smectites Using Thin-Layer Chromatography

Appl. Clay Sci.,70:13-20 2019 Tajima, K., Okada, T.

2018年

Direct Crystallization of Layered Silicates on the Surface of Amorphous Silica

Okada, T. Chem. Rec.,18:829-839 2018

Effect of particle size and local disorder on specific surface area of layered double hydroxides upon calcination-reconstruction

Kim, B.-K., Gwak, G.-H., Okada, T., Oh, J.-M. J. Solid State Chem.,263:60-64 2018

Crystal Growth of Layered Silicate Grafted with Organic Groups on Monodisperse Spherical Silica Particles

Yamauchi, M., Okada, T. Clays Clay Miner.,66(2):104-113 2018

Variation in thickness of a layered silicate on spherical silica particles affected HPLC chiral chromatographic resolution

Okada, T., Oguri, M., Tajima, K., Yamakami, T., Sato, H. Appl. Clay Sci.,163:72-80 2018

Uniform-sized Silica Nanocapsules Produced by Addition of Salts to a W/O Emulsion Template

Okada, T.; Koide, T. Langmuir,34:9500-9506 2018

2017年

Photoinduced structural changes of cationic azo dyes confined in two dimensional nanospace by two different mechanisms

Okada, T., Nozaki, N., Seo, J., Kwon J. E., Park, S. Y., Hashizume, H. Sasaki, T., Ogawa, M. 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

Okada, T., Yoshida, T., Iiyama, T. J. Phys. Chem. B, 121:6919-6925 2017

Photoluminescence by Intercalation of a Fluorescent β-Diketone Dye into a Layered Silicate

Hirose, M., Ito, F., Shimada, T., Takagi, S., Sasai, R., Okada, T. Langmuir, 33(47): 13515-13521 2017

2016年

An Inorganic Anionic Polymer Filter Disc: Direct Crystallization of a Layered Silicate Nanosheet on a Glass Fiber Filter

Okada, T., Shimizu, K., Yamakami, T. RSC Adv., 6: 26130-26136 2016

Application of Hectorite-Coated Silica Gel Particles as a Packing Material for Chromatographic Resolution

Okada, T., Kumasaki, A., Shimizu, K., Yamagishi, A., Sato, H. J. Chromatogr. Sci., 54: 1238-1243 2016

Water-Floatable Organosilica Particles for TiO2 Photocatalysis

Maki, Y., Ide, Y., Okada, T. 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

Okada, T., Kobari, H., Haeiwa, T. Appl. Clay Sci., 132-133: 320-325 2016

2015年

Concentration of 2-Phenylphenol by Organoclays from Aqueous Sucrose Solution

Seki, Y., Ide, Y., Okada, T., Ogawa, M. Appl. Clay Sci., 109-110: 64-67 2015

Organoclays in water cause expansion that facilitates caffeine adsorption

Okada, T., Oguchi, J., Yamamoto, K., Shiono, T., Fujita, M., Iiyama, T. Langmuir, 31:180-187 2015

Photochromic intercalation compounds

Okada, T., Sohmiya, M., Ogawa, M. Struct. Bond.,166:177-211 2015

Preparation of Porous Thin-film Polymethylsiloxane Microparticles in a W/O Emulsion System.

Mishima, S., Okada, T., Sakai, T., Kiyono, R., Haeiwa, T. Polym. J., 47:449-455 2015

Crystal architectures of a layered silicate on monodisperse spherical silica particles cause the topochemical expansion of the core-shell particles

Okada, T., Suzuki, A., Yoshido, S., Minamisawa, H. M. Microporous Mesoporous Mater., 215:168-174 2015

Crystal growth of a hectorite-like layered silicate on monodisperse spherical silica particles with different diameters

Okada, T., Suzuki, A. Clay Sci., Vol.19 No.2, 45-51 2015

In situ crystallization of Al-containing silicate nanosheets on monodisperse amorphous silica microspheres

Okada, T., Sueyoshi, M., Minamisawa, M. H. Langmuir, 31:13842-13849 2015

2014年

Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds.

Okada, T., Seki, Y., Ogawa, M. J. Nanosci. Nanotech.,14:2121-2134 2014

Encapsulation of a Polyoxometalate into an Organosilica Microcapsule for Highly Active Solid Acid Catalysis

Okada, T., Miyamoto, K., Sakai, T., Mishima, S. ACS Catal., 4:73-78 2014

Chemically Stable Magnetic Nanoparticles for Metal Adsorption and Solid Acid Catalysis in Aqueous Media.

Okada, T., Takeda, Y., Watanabe, N., Haeiwa, T., Sakai, T., Mishima, S. J. Mater. Chem. A, 2(16): 5751-5758 2014

層状粘土鉱物への有機化合物のインターカレーション

岡田友彦 オレオサイエンス,14:189-196 2014

Magnetic rattle-type core-shell particles containing iron compounds with acid-tolerance by dense silica.

Okada, T., Ozono, S., Okamoto, M., Takeda, Y., Minamisawa, H. M., Haeiwa, T., Sakai, T., Mishima, S. Ind. Eng. Chem. Res., 53(21):8759-8765 2014

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

2013年

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

Immobilization of Organic Dyes on Clays Toward Controlled Photoinduced Events

Ogawa, M., Sohmiya, M., Kakegawa, N., Okada, T. Clays Clay Miner., The Clay Minerals Society Workshop Lectures Series,18 2013

Layered Clay Aerogels by A Freeze-Drying Process for A Platinum-Supported Catalyst.

Okada, T., Kato, T., Yamaguchi, T., Sakai, T., Mishima, S. Ind. Eng. Chem. Res., 52:12018-12024 2013

Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles.

Okada, T., Gonzales-Alfaro, Y., Espinosa, A., Watanabe, N., Haeiwa, T., Sonehara, M. Mishima, S., Sato, T., Munoz-Noval, A., Aranda, P., Garcia-Herndez, M., Ruiz-Hitzky, E. J. Appl. Phys.,114(12):124304 2013

2012年

Characteristics and mechanism of low temperature dehydrochlorination of poly(vinyl chloride) in the presence of zinc(II) oxide.

Kosuda, T., Okada, T., Nozaka, S., Matsuzawa, Y., Shimizu, T., Hamanaka, S., Mishima, S. Polym. Degrad. Stab., 97:584-591 2012

Organic-inorganic hybrids based on ultrathin oxide layers -Designed nanostructures for molecular recognition.

Okada, T., Ide, Y., Ogawa, M. Chem. Asian J., 389:1980-1992 2012

Swellable Microsphere of a Layered Silicate Produced by Using Monodispersed Silica Particles.

Okada, T., Yoshido, S., Miura, H., Yamakami, T., Sakai, T., Mishima, S. J. Phys. Chem. C, 116:21864-21869 2012

2011年

Fabrication of acid-tolerant magnetic Co@SiO2 core-shell particles with dense silica shell

Okada, T., Watanabe, N., Sakai, T., Haeiwa, T., Mishima, S. Chem. Lett., 40:106-107 2011

Organo-smectite adsorbents; Designed nanostructures for smart adsorbents

Okada, T., Ogawa, M. 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

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

2010年

Nanospace Engineering of Methylviologen Modified Hectorite-Like Layered Silicates with Varied Layer Charge Density for the Adsorbents Design

J. Phys. Chem. C,114:539-545 2010 Okada, T. Matsutomo, T., Ogawa, M.

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

Adsorption of 4-nonylphenol on 1,1’-dioctyl-4,4’-bipyridinium-smectite intercalation compounds from aqueous solution

Okada, T., Ogawa, M. Clay Sci., 14:191-196 2010

2009年

Adsorption of tetrakis(p-sulfonatophenyl)porphyrin on kaolinite.

Tanaka, Y., Okada, T., Ogawa, M. J. Porous Mater., 16(6):623-629 2009

One-pot Synthesis of Inorganic-Organic Hollow Microsphere Solid-Acid Catalysts in a W/O Microemulsion System

Okada, T., Mishima, S., Yoshihara, S. Chem. Lett., 39:32-33 2009

Preparation of iron containing hectorite-like swelling silicate

Ogawa, M., Matsutomo T., Okada, T. Bull. Chem. Soc. Jpn., 82:408-412 2009

Preparation of quaternary diammonium-montmorillonites and their vapor adsorption properties

Seki, Y., Okada, T., Ogawa, M. Microporous Mesoporous Mater.,129:30-35 2009

チタニア/界面活性剤ナノスケルトンによる水中溶存アルキルフェノールの吸着

酒井俊郎, Albar Da Loves, 岡田友彦, 三島彰司, 柴田裕史, 遠藤健司, 酒井秀樹, 阿部正彦 J. Flux Growth, 4:48-53 2009

2008年

Luminescence quenching of tris(2,2’-bipyridine)ruthenium(II) in the interlayer space of saponite by sulfur dioxide

Okada, T., Konno, T., Ogawa, M. Clay Sci.,14:43-48 2008

Preparation of hectorite-like swelling silicate with controlled layer charge density.

Ogawa, M., Matsutomo T., Okada, T. J. Ceram .Soc. Jpn.,116:1309-1313 2008

The effect of the molecular structure of a cationic azo dye on the photoinduced intercalation of phenol in a montmorillonite

Okada, T., Sakai, H., Ogawa M. Appl. Clay Sci., 40:187-192 2008

2007年

Adsorption of europium ion on smectites and fluor-tetrasilicic mica

Okada, T., Ehara, Y., Ogawa M. Clays Clay Miner., 55:348-353 2007

2006年

Adsorption andpossible luminescence detection of 4-nonylphenol by Eu3+-smectites

Okada, T., Ehara, Y., Ogawa M. Chem. Lett., 35:638-639 2006

Preparation and properties of trans-2-butene-1,4-bis(triphenylphosphonium)-saponite

Tanaka, Y., Okada, T., Ogawa, M. J. Porous Mater.,13:157-161 2006

2005年〜

芳香環を含む陽イオンで交換したスメクタイトの吸着特性

岡田友彦, 小川誠 粘土科学,45:19-30 2005

Photoregulation of adsorption behavior of phenol for azobenzene-clay intercalation compounds

Okada, T., Watanabe, Y., Ogawa, M. J. Mater. Chem.,15:987-992 2005

Tris(2,2’-bipyridine)ruthenium(II)-clays as adsorbents for phenol and chlorinated phenols from aqueous solution

Okada, T., Morita, T., Ogawa, M Appl. Clay Sci.,29:45-53 2005

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

Okada, T., Morita, T., Ogawa, M. Clay Sci.,12:277-284 2004

Photocontrol of the adsorption behavior of phenol for an azobenzene-montmorillonite intercalation compound

Okada, T, Watanabe, Y., Ogawa, M. Chem. Commun., 320-321 2004

p-Phenylenediammonium-smectites as adsorbents with colorimetric detection ability for phenols in water

Okada, T., Ogawa, M. Bull. Chem. Soc. Jpn., 77:1165-1170 2004

1,1’-Dimethyl-4,4-bipyridinium-smectites as a novel adsorbent of phenols from water through charge-transfer interactions

Okada, T., Ogawa, M. Chem. Commun., 1378-1379 2003

Adsorption of phenols onto 1,1’-dimethyl-4,4’-bipyridinium-smectites.

Okada, T., Ogawa, M. Chem. Lett., 31:812-813 2002