SYNTHESES OF NANO-STRUCTURED GRAPHITE INTERCALATION COMPOUNDS AS A ELECTRO- AND A PHOTO- CATALYSTS AND THEIR APPLICATION TO THE PHOTOCATALYTIC HYDROGEN PRODUCTION AND THE ELCTROCATALYTIC REDUCTION OF CARBON DIOXIDE

纳米结构石墨插层化合物电催化剂和光催化剂的合成及其在光催化制氢和电催化还原二氧化碳中的应用

• 批准号: 16510095
• 负责人: IZUMI Ikuichiro
• 金额: $ 2.56万
• 依托单位: NARA NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16510095/
• 关键词: Graphite intercalation compound; Copper chloride; Nano-structure; Hydrogen production; CO_2 reduction; Electrocatalysis; Photocatalysis; Sacrificial sulfur-graphite electrode; 黒鉛層間化合物

The results of this research are summarized as follows.(1)It was found that nano-structured graphite intercalation compounds (GICs) with copper chloride were sensitized by the photoillumination of xenon light in an aqueous solution. In the present work, the photoelectrochemical characteristics of the GICs were investigated and also the mechanism for the photosensitization was discussed.(2)The photoillumination to a suspension of CuCl_2-GICs with a metallic copper powder resulted in a hydrogen production in an aqueous methanol solution. The mechanistic approach was performed by considering the dependences of illumination time, methanol concentration, and content of CuCl_2-GICs to the photocatalytic hydrogen production.(3)On cyclic voltammograms measured, CuCl_2-GICs revealed similar electrochemical behavior to that of copper electrode in an aqueous potassium bicarbonate solution saturated with carbon dioxide. From the similarity we could expect the electrocatalytic property of CuCl_2-GICs in the electrochemical reduction of carbon dioxide, because copper electrode has been well known as an electrocatalyst for its reduction in the literature. Thus electrocatalytic reduction of carbon dioxide was investigated in an aqueous potassium bicarbonate solution saturated with carbon dioxide. The resulting gaseous products are carbon monoxide and methane from the reduction of carbon dioxide, in addition to hydrogen from a water decomposition.(4)We proposed the new use of the sacrificial sulfur-graphite electrode. In conclusion, the S-C electrode was found to be useful for N-tolylation of aromatic amines from the standpoint of lower cathodic overpotential and higher product yields.

本研究的结果总结如下。(1)It发现纳米结构的石墨层间化合物（GIC）与氯化铜的敏化由氙灯在水溶液中的光照射。本文研究了GICs的光电化学特性，并对GICs的光敏化机理进行了探讨。（2）CuCl_2-GICs与金属铜粉的悬浮液在甲醇水溶液中光照产生氢气。通过考察光照时间、甲醇浓度和CuCl_2-GICs含量对光催化产氢的影响，对反应机理进行了探讨。(3)On在饱和CO_2的碳酸氢钾水溶液中，CuCl_2-GICs的循环伏安曲线显示出与铜电极相似的电化学行为。由于铜电极在CO2电化学还原反应中的电催化作用，因此CuCl_2-GICs在CO2电化学还原反应中具有良好的电催化性能。因此，在二氧化碳饱和的碳酸氢钾水溶液中研究了二氧化碳的电催化还原。所得到的气态产物是来自二氧化碳还原的一氧化碳和甲烷，以及来自水分解的氢气。(4)We提出了牺牲硫-石墨电极的新用途。总之，从较低的阴极过电位和较高的产物产率的观点来看，发现S-C电极对于芳香胺的N-甲苯基化是有用的。

项目成果

グラファイト層間化合物の電極触媒及び光触媒への応用

石墨插层化合物在电催化剂和光催化剂中的应用

• 发表时间: 2005
• 期刊: 奈良工業高等専門学校研究紀要 No.41
• 作者: I.Izumi;M.Yasuzawa;A.Kunugi;Ikuichiro IZUMI et al.;Katsumi Katakura et al.;泉 生一郎 他
• 通讯作者: 泉 生一郎 他

Indirect Electroreduction of Imines and Diimines Using a Sacrificial Sulfur-Graphite, Electrode

使用牺牲硫石墨电极间接电还原亚胺和二亚胺

• 发表时间: 2006
• 期刊: Electrochemistry Vol.74(No.8)(in print)
• 作者: I.Izumi;M.Yasuzawa;A.Kunugi
• 通讯作者: A.Kunugi

二液分離型光化学ダイオードによる水素生成

使用二液分离型光化学二极管产生氢气

• 发表时间: 2009
• 期刊: 平成20年度 京都大学 総合技術研究会 報告集 第II分冊
• 作者: 大西康幸

Preparation of Electrochemically -formed Spinel Lithium Manganese Oxide and Its Charge-Discharge Behaviors

电化学形成尖晶石锂锰氧化物的制备及其充放电行为

• 发表时间: 2005
• 期刊: J.Power Sources Vol.146
• 作者: K.Katakura;S.Nishimura;Z.Ogumi
• 通讯作者: Z.Ogumi

Electrochemically-Formed Spinel Lithium Manganese Oxides and Its Charge-Discharge Behaviors

电化学形成的尖晶石锂锰氧化物及其充放电行为

• 发表时间: 2005
• 期刊: J.Power Sources Vol.146
• 作者: I.Izumi;Y.Ohnishi;M.Matsumoto;Y.Yasunaga;K.Kuroda;N.Iwashita;泉 生一郎 他;Katsumi Katakura et al.
• 通讯作者: Katsumi Katakura et al.