Changes in the oxidation state of Pt single-atom catalysts upon removal of chloride ligands and their effect for electrochemical reactions

被引：51

作者：

Shin, Sangyong ^{[1
]}

Kim, Jiwhan ^{[1
]}

Park, Subin ^{[2
]}

Kim, Hee-Eun ^{[1
]}

Sung, Yung-Eun ^{[2
]}

Lee, Hyunjoo ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon 34141, South Korea

[2] Seoul Natl Univ, Sch Chem & Biol Engn, IBS, Ctr Nanoparticle Res, Seoul 08826, South Korea

来源：

CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 45期

基金：

新加坡国家研究基金会;

关键词：

METAL-SUPPORT INTERACTIONS; HYDROGEN-PEROXIDE; CO OXIDATION; OXYGEN; REDUCTION; PLATINUM; H2O2; ENCAPSULATION; TRENDS; PD;

D O I：

10.1039/c9cc01593k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Single atomic Pt supported on TiC was prepared from chloride Pt precursors, then the chloride ligands were intentionally removed by increasing the reduction temperature. The 0.2 wt% Pt/ TiC catalyst reduced at 300 8C had more reduced Pt single-atoms with fewer chloride ligands and exhibited the highest currents for H2O2 formation in the electrochemical oxygen reduction reaction. Controlling the oxidation state of the single-atoms is very important to maximize the activity of the single-atom catalysts.

引用

页码：6389 / 6392

页数：4

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