The study of basic concepts of electrocatalyst designs

电催化剂设计基本概念的研究

• 批准号: 61470078
• 负责人: WATANABE Masahiro
• 金额: $ 3.52万
• 依托单位: Yamanashi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61470078/
• 关键词: ad-atom; electrocatalyst; TiO_2; GaP; Si; supported catalyst; platinum; iridium; single crystal; oxidation; reduction; carbon monoxide; methanol; formaldehide; formic acid; ethanol; 半導体電極; 炭酸ガス; ad-atom金属電極; フタロシアニンガス拡散電極; メタノールギ酸; 酸化

1. Design of electrocatalysts by ad-atoms.(1) Effect of ad-atoms on a photoelectrochemical water splitting, an oxidation of CO, and a reduction of CO_2 on semiconductor electrodes. Distinctive enhancements and selectivity of reaction products by atomically dispersed Pt ad-atoms have obtained in comparison with previous works, which appeared at the coverage of surface with ad-atoms of ca. 0.5.(2) Effect of ad-atoms on the elementally steps of electrooxidation of alcholes and the relating compounds on platinum electrodes. It was revealed that oxygen-adsorbing ad-atoms can enhance either the first or the following steps in the successive reactions, but non-oxygen-adsorbing ad-atoms inhibit the first elementary step, in the inhibition of the tolal reaction.2. Electrocatalytic activity of single crystyal planes for the oxidation of methanol and the relating compounds. Prepared surfaces of Pt and Ir were identified electrochemically. The maps of the activity and the tolerance to self-inhibition have been made, which showed great difference smong the surfaces.3. Break-through to the so-called "crystallite size effect" on highly dispersed Pt catalyst.The problem was solved by using high surface area support, resulting in extremely high activity at the ultra-fine catalyst of a crystallite diameter of ca. 1.4 nm.

1。通过Ad-Atoms的电催化剂设计。（1）Ad-Otoms对光电化学水分裂的影响，CO的氧化和半导体电极上CO_2的降低。与以前的作品相比，通过原子分散的Pt Ad-Atoms对反应产物的独特增强和选择性，这些作品出现在表面上，表面覆盖有Ca。 0.5。（2）Ad-Otoms对炼金术的电氧化和铂电极上的相关化合物的影响。据揭示，氧气吸附的广告原子可以增强连续反应中的第一个或以下步骤，但是在抑制tolal反应时，非氧气吸附的Ad原子会抑制第一个基本步骤。2。单晶平面的电催化活性，用于甲醇和相关化合物的氧化。用电化学鉴定了制备的PT和IR表面。已经制作了活动的地图和对自我抑制的耐受性，这表现出了很大的差异。3。通过使用高表面积的支撑来解决所谓的“结晶石尺寸效应”对高度分散的PT催化剂的突破，从而解决了该问题，从而在CA的结晶石直径的超细催化剂上产生了极高的活性。 1.4 nm。

项目成果

M.Shibata,;S.Motoo: J.Electroanal.Chem.209. 151-158 (1986)

M.Shibata，；S.Motoo：J.Electroanal.Chem.209。

Satoshi Motoo: Bar.Bunsenges.Phys.Chem.91. 457 (1987)

本尾聪：Bar.Bunsenges.Phys.Chem.91。

M.Watanabe: J.Electroanal.Chem.197. 195-208 (1986)

M.渡边：J.Electroanal.Chem.197。

M.Watanabe: Proceeding of Electrochem.Soc.Vol.88ー14. 198-204 (1988)

M.Watanabe：Electrochem.Soc.Vol.88-14 论文集（1988）。

M.Watanabe: J.Electroanal.Chem.(1988)

M.渡边：J.Electroanal.Chem.(1988)