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
收藏
页码：5763 / 5769
页数：7
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