The University of Tokyo

Toto Ltd.

Kanagawa Academy of Science and Technology

Panasonic Corporation

Showa Denko K.k.

Nippon Soda Co., Ltd.

Takenaka Corporation

Dowa Electronics Materials Co., Ltd.

Fuji Xerox Co., Ltd.

Kobe Steel, Ltd.

Japan Science and Technology Agency

Riken Corporation

Japan Agency for Marine-earth Science and Technology

Toudai Tlo, Ltd.

Kanagawa Institute of Industrial Science and Technology

Kazuhito Hashimoto

Adam Heller

Akira Fujishima

Toshiya Watanabe

Makoto Hayakawa

Shin-ichi Ohkoshi

Eiichi Kojima

Mitsuyoshi Machida

Atsushi Kitamura

Makoto Chikuni

Keiichiro Norimoto

Hiroko Tokoro

Hiroshi Irie

Ryuhei Nakamura

Tomokazu Iyoda

Kayano Sunada

Toshio Saito

Masahiro Miyauchi

Koichi Takahama

Takatoshi Ogawa

Yasushi Kuroda

Tetsuo Yoshimoto

Shigemichi Fukayama

Shinichiro Miki

Mitsuo Yaguchi

Mitsuhide Shimohigoshi

Osamu Sato

Eiichi Akutsu

Shigemi Ohtsu

Shinya Sasaki

Akira Yamaguchi

Yoshinobu Kubota

Kimitaka Sato

Yuya Suzuki

Michio Suzuka

Tamotsu Hasegawa

Yasuhiko Yoshioka

Shunsuke Sakurai

Yasuhiro Hosogi

Soichiro Kato

Tatsuya Maruyama

Toru Hayashi

Ryuichi Nakano

Yoshimasa Ito

Shuhei Miura

Tatsuya Yasunaga

Ikuo Sawada

Hiroshi Toyoda

Kensaku Kinugawa

Shuji Nakanishi

Yoshihide Tsunobuchi

Tokuyoshi Saitoh

Fumiyoshi Hakoe

Shiro Kuroki

Ding Li

Atushi Kitamura

Nobuo Tsubouchi

Huogen Yu

Xiaoqing Qiu

Kazuhide Kamiya

Sadatoshi Ohno

Tomokazu Saruhashi

Ken Takai

Fumio Kamikubo

Kazuhiro Abe

Yoshiki Shimodaira

Junichi Miyazaki

Takazo Shibuya

Kentaro Nakamura

Hirotaka Kakizaki

Ryo Kamai

Tomoyuki Matsuda

Takayuki Nakata

Masahiro Yamamoto

Kazuyuki Iwase

Makoto Tomoyori

Atsumichi Kushibe

Takashi Kato

Masatoshi Yamazaki

Yasuhide Yamagushi

Deepa Dey

Fumiyoshi Kai

Kazuya Watanabe

Hitoshi Ishiguro

Jitsuo Kajioka

Syuhei Miura

Yanyan Yao

Eiichi Okamoto

Eiichi c/o Toto Ltd Kojima

Makoto c/o Toto Ltd Hayakawa

Kazuhiro c/o Taiyo Kogyo Corporation Abe

Hiroshi c/o Taiyo Kogyo Corporation Toyoda

Takayuki c/o Taiyo Kogyo Corporation Nakata

Provided is a catalyst that exhibits a high catalyst activity in a water oxidation reaction within a neutral range. A water splitting catalyst comprises at least one 3d-block transition metal element selected from manganese, iron, cobalt, nickel, and copper or a compound containing the element, and a base and/or a carbonate having a pKa of 8 or less.

Water splitting catalyst, and method for producing oxygen and hydrogen using the same

An agent for virus inactivation capable of exhibiting inactivation action based on structural destruction such as degradation and decomposition against viruses, which comprises a monovalent copper compound such as cuprous oxide, cuprous sulfide, cuprous iodide, and cuprous chloride as an active ingredient, and a virus inactivation material, which contains the agent for virus inactivation on a surface of a substrate and/or inside of the substrate.

Method for inactivating a virus

A power generation system includes a hydrothermal fluid well including a drilled hole reaching down to a hydrothermal fluid reservoir present below an ocean floor from an ocean floor surface and a casing installed in the drilled hole through a guide base on the ocean floor surface, an anode provided on a flow channel for hot water formed by the hydrothermal fluid well, a cathode provided in seawater other than the flow channel for hot water formed by the hydrothermal fluid well, and an ocean floor device that is connected with the anode and the cathode respectively and extracts generated power so as to operate. Power is easily and stably supplied on the ocean floor.

Power generation system

A copper compound-carried titanium oxide photocatalyst which is excellent in a photocatalytic activity and a viral inactivation property and a production process for the same can be provided by a copper compound-carried titanium oxide photocatalyst comprising titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more and a monovalent copper compound and a divalent copper compound which are carried on a surface of the titanium oxide described above and a production process for a copper compound-carried titanium oxide photocatalyst, comprising a step of carrying a monovalent copper compound and a divalent copper compound on a surface of titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more.

Titanium oxide photocatalyst having copper compounds supported thereon, and method for producing same

Object of the present invention is to provide visible light-responsive photocatalyst coating material which can form a coating film exhibiting superior allergen inactivation property through irradiation of visible light. The visible light-responsive photocatalyst coating material comprises: photocatalyst material having visible light-activity composed of metal oxide particle with divalent copper salt supported on the surface thereof, said metal oxide particle having optical semiconductor-characteristics and potential of valence band of said metal oxide particle being 3[V] or more (vs. SHE, pH=0); binder component including component having siloxane bond or component forming siloxane bond through reaction; and chloride ionic compound. When visible light is irradiated to the coating film, the metal oxide particle exhibits photocatalyst activity in the presence of the copper-divalent ion and chloride ion, thereby significantly high allergen inactivation property is exhibited. Additionally, it can prevent the separation of the photocatalyst coating material from the coating film.

Visible light-responsive photocatalyst coating material, coated article, allergen inactivation method

A titanium oxide particle that can develop non-conventional and novel physical properties, a method for manufacturing the same, and a magnetic memory, an optical information recording medium, and a charge accumulation type memory using the same are provided. A silica-coated titanium hydroxide compound particle is directly produced through a sol-gel technique and not through a reverse micelle technique, and the silica-coated titanium hydroxide compound particle is subjected to a calcination process. Hence, a titanium oxide particlecan be provided which can develop non-conventional and novel physical properties such that it does not perform phase transition at a room temperature and a TiOparticle body can always maintain the characteristic as a paramagnetic metal in all temperature ranges unlike conventional bulk bodies that perform phase transition between a non-magnetic semiconductor and a paramagnetic metal at a temperature near about 460 K.

Titanium oxide particles, process for producing same, magnetic memory, optical information recording medium, and charge accumulation type memory

A microstructure that can develop non-conventional and novel physical properties and a method for producing the same are provided. Ethanol is added to a mixture solution produced by adding a surfactant solution to a peroxotitanic acid aqueous solution to produce precipitates, and the precipitates collected from the mixture solution are let dried to produce precursor powders. The precursor powdersare calcined at a predetermined temperature. Accordingly, a microstructurecan be produced which is formed of monophasic TiOin nano size. The microstructureof monophasic TiOproduced in this fashion can be fine-grained in nano size unlike prior-art crystals.

Microstructure and manufacturing method therefor

An antimicrobial and antiviral composition, a method of producing the same, and the like are provided, which are capable of exhibiting an excellent antimicrobial and antiviral properties over a long time in the application for various uses. The antimicrobial and antiviral composition contains cuprous oxide particles having a BET specific surface area of 5 to 100 m/g and a saccharide having an aldehyde group, in which the content of the saccharide with an aldehyde group is 0.5 to 10 mass part based on the cuprous oxide particles of 100 mass part. The method produces this composition.

Antimicrobial and antiviral composition, and method of producing the same

It is an object of the present invention to provide a microbial fuel cell capable of increasing a current density without employing a mediator. The microbial fuel cellincludes a 3-dimensionally structured agglomerate formed from conductive fine particlesand microorganisms. In the agglomerate, the conductive fine particlesdisperse among pieces ofand the conductive fine particlesare coupled to one another to hold, thus forming the 3-dimensional structure as a whole. Accordingly, with respect to, conductive fine particlesholdon a surface of an electrodeand evenpositioned vertically away from the surface of the electrode. Hence, it becomes possible that more pieces ofare allowed to transfer electrons.

Microbial fuel cell

The present invention relates to a photocatalytic material having a visible light activity which includes a tungsten-doped titanium oxide or a tungsten/gallium-codoped titanium oxide, and a divalent copper salt and/or a trivalent iron salt supported on a surface of the doped or codoped titanium oxide, and a process for producing the photocatalytic material.

Photocatalytic materials and process for producing the same

There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particlescapable of manifesting an unprecedented property that TiOparticles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.

Titanium oxide particles, manufacturing method thereof, magnetic memory, and charge storage type memory

A divalent copper salt and/or trivalent iron salt is supported on a surface of a metal ion-doped titanium oxide obtained by doping titanium oxide with metal ions to give a metal ion-doped titanium oxide with a valence band potential of 3 V or more (vs. SHE, pH=0) and a bandgap of 3 V or less between the valence band and an energy level of electrons excited from the valence band (including conduction band minimum potential and isolated potential). The metal ion-doped titanium oxide can be made to exhibit strong oxidative decomposition activity when irradiated with visible light based on the fact the divalent copper salt or trivalent iron salt functions as a catalyst for multi-electron reduction of oxygen.

Photocatalytic material, method of decomposing organic substance, interior member, air cleaning device, and device for producing oxidizing agent

There are provided a fine structural body capable of manifesting an unprecedented property; a manufacturing method thereof; and a magnetic memory, a charge storage memory and an optical information recording medium employing such fine structural body. Unlike conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, there can be provided a fine structural bodycomprised of TiO, but capable of manifesting an unprecedented property in which a paramagnetic metal property thereof is consistently maintained in all temperature ranges without undergoing phase transition to a nonmagnetic semiconductor.

Fine structural body, method for manufacturing fine structural body, magnetic memory, charge storage memory and optical information recording medium

The present invention provides a tungsten trioxide microparticle carrying on its surface divalent copper salt. The divalent copper salt is utilized to perform a multi-electron reduction of oxygen. The tungsten trioxide exhibits a high oxidative decomposition activity when exposed to visible light.

Photocatalyst material, method for decomposition of organic material, interior member, air purification device, and apparatus for preparation of oxidizing agent

This invention provides a photocatalyst material, which can be produced at low cost without using platinum, particularly a visible light response-type photocatalyst material, a material having a photocatalyst mechanism not possessed by the conventional photocatalyst material, a process for producing the material, and a method for decomposing a contaminant using the material. The photocatalyst material comprises a) an oxide of a first metal and b) an aqua complex salt of a second metal. In this case, for the oxide of a first metal, the redox potential of a conduction band lower end in the oxide is on a rather negative side than 0.2 V (a value as measured at pH=0, vs. reference electrode potential). For the aqua complex salt of a second metal, the redox potential of a second metal ion in the aqua complex salt is on a rather negative side than 3.0 V (a value as measured at pH=0, vs. reference electrode potential). In the material, the aqua complex salt of a second metal is chemically adsorbed on the oxide of a first metal.

Photocatalyst material, process for producing the photocatalyst material, and method for decomposing contaminant using the material

Growing community of inventors

Tokyo, Japan

Kazuhito Hashimoto