大阪大学 · Materials Science
쿠와바타 스وم스케 교수의 연구실은 이온 액체를 활용한 나노재료 합성과 전기화학적 반응을 중심으로 하는 고부가가치 소재 개발을 주요 연구 분야로 삼고 있습니다. 특히 이온 액체의 비증기압성과 안정성을 활용해 진공 환경에서도 활용 가능한 나노입자 합성 기법을 개발하였으며, 생체 효소를 이용한 이산화탄소의 메탄올 전환 기술도 함께 연구하고 있습니다. 전기화학적 중합을 통한 복합 전도성 고분자 필름 개발을 통해 리튬이온 배터리의 고성능 카디오매터리 소재도 개발하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract It has been discovered that ionic liquid can be observed by a scanning electron microscope without accumulation of electron charges, allowing SEM observation of insulating specimens wetted with ionic liquid.
A characteristic of negligible vapor pressure that a room temperature ionic liquid (RTIL) possesses enables us to introduce RTILs in the apparatus requiring vacuum conditions for material production and analyses. This combination creates a path toward development of new techniques under vacuum conditions. As for material production, especially metal nanoparticle synthesis, those are magnetron sputtering onto RTILs, plasma reduction in RTILs, physical vapor deposition onto RTILs, and electron bea
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical conversion of carbon dioxide to methanol with the assistance of formate dehydrogenase and methanol dehydrogenase as biocatalystsSusumu Kuwabata, Ryo Tsuda, and Hiroshi YoneyamaCite this: J. Am. Chem. Soc. 1994, 116, 12, 5437–5443Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 June 1994https://pubs.acs.org/doi/10.1021/ja00091a056https://doi.org/10.1021/ja00091a056research-articleACS
Electrochemical copolymerization of pyrrole and thiophene has been accomplished using an acetonitrile solution containing 0.1M thiophene and pyrrole. The production of copolymers was evidenced by IR measurements of the resulting polymers and their electrochemical properties. The electrochemical behavior of the copolymers is gradually changed from that of polypyrrole to polythiophene with an increase of the thiophene rings in the copolymers, reflecting that the ratio of pyrrole to thiophene rings
Composite films of polypyrrole and or lithiated particles have been synthesized for use as cathode‐active materials of rechargeable lithium batteries. The composite films were prepared by electrolysis of pyrrole dissolved in propylene carbonate solution in the presence, of suspended particles. The maximum amount of the incorporation of was 50.2 and 40.6 weight percent for and , respectively. It was found that both polypyrrole and the incorporated worked as the active material with one potential
Photoinduced reduction of formate to methanol has been achieved using microcrystalline colloid which contained formate, methanol dehydrogenase (MDH), pyrroloquinoline quinone (PQQ) as an electron mediator for MDH, and 2‐propanol. This reaction was combined with photoreduction of carbon dioxide to formate on the microcrystallite which had already been reported to provide a new photosynthetic route for production of methanol from carbon dioxide. The production of methanol showed a saturation tende
Abstract Polypyrrole films prepared by anodic polymerization of pyrrole on Pt or SnO2-coated glass show redox behavior in aqueous electrolyte solutions containing a supporting electrolyte alone. Transfer of electrolyte anions into and from the film is involved in the redox reaction similarly with acetonitrile solutions already reported. Insertion of divalent anions into the film occurs in two steps but that of monovalent anions in one step, as judged from corresponding cyclic voltammograms. The
