Controlled Synthesis of Silver Micro/Nano Leaves for Oxygen Reduction and CO2 Reduction

被引：1

作者：

Wang, Meng ^{[1
,3
]}

Liu, Rongji ^{[1
]}

Zhang, Shuangshuang ^{[1
]}

Li, Bin ^{[2
]}

Zhang, Ke ^{[2
]}

Zhang, Guangjin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China

[2] CNTC, Zhengzhou Tobacco Res Inst, Zhengzhou 450001, Henan, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2018年 / 18卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Silver Dendrite; Oxygen Reduction; CO2; Reduction; Morphology Control; ELECTROCATALYTIC REDUCTION; DENDRITIC NANOSTRUCTURES; NANOPARTICLES; CATHODE; NANOCRYSTALS; ELECTRODES; CHEMISTRY; CATALYSIS; GROWTH;

D O I：

10.1166/jnn.2018.15369

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, three different Ag micro/nano leaves were successfully synthesized through a galvanic displacement reaction by adjusting the concentration of Ag+. The catalytic activities of the prepared Ag micro/nano leaves toward ORR showed strong dependence on their morphology. An optimal concentration of Ag+ can result in a well-defined Ag micro/nano leaves with both crystallization and surface area, which showed the best activity towards ORR in alkaline media. In addition, the prepared Ag micro/nano leaves also showed high activity towards CO2 reduction, which required a potential of -0.8 V versus RHE to selectively convert CO2 to CO with the faradaic efficiency at about 20%. Compared with the Ag plate at the same overpotential, the FE has increased by 5-fold.

引用

页码：5763 / 5769

页数：7

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