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CO2 reduction to acetate in mixtures of ultrasmall (Cu)n,(Ag)m bimetallic nanoparticles
Proceedings of the National Academy of Sciences of the United States of America ( IF 11.1 ) Pub Date : 2018-01-09 00:00:00 , DOI: 10.1073/pnas.1713962115
Ying Wang 1 , Degao Wang 1 , Christopher J. Dares 2 , Seth L. Marquard 1 , Matthew V. Sheridan 1 , Thomas J. Meyer 1
Affiliation  

Monodispersed mixtures of 6-nm Cu and Ag nanoparticles were prepared by electrochemical reduction on electrochemically polymerized poly-Fe(vbpy)3(PF6)2 film electrodes on glassy carbon. Conversion of the complex to poly-Fe(vbpy)2(CN)2 followed by surface binding of salts of the cations and electrochemical reduction gave a mixture of chemically distinct clusters on the surface, (Cu)m,(Ag)n|polymer|glassy carbon electrode (GCE), as shown by X-ray photoelectron spectroscopy (XPS) measurements. A (Cu)2,(Ag)3|(80-monolayer-poly-Fe(vbpy)32+|GCE electrode at −1.33 V vs. reversible hydrogen electrode (RHE) in 0.5 M KHCO3, with 8 ppm added benzotriazole (BTA) at 0 °C, gave acetate with a faradaic efficiency of 21.2%.

中文翻译:

在超小(Cu)n,(Ag)m双金属纳米颗粒混合物中将CO2还原为乙酸盐

通过在玻璃碳上电化学聚合的-Fe(vbpy)3(PF 62薄膜电极上进行电化学还原,制备6-nm Cu和Ag纳米粒子的单分散混合物。将该配合物转化为-Fe(vbpy)2(CN)2,然后将阳离子的盐进行表面键合并进行电化学还原,得到了表面上化学性质不同的簇的混合物,(Cu)m,(Ag)n |聚合物|玻璃碳电极(GCE),如X射线光电子能谱(XPS)测量所示。A(Cu)2,(Ag)3 |(80-单层--Fe(vbpy)3 2+ | GCE电极在-1.33 V下与0.5 M KHCO 3中的可逆氢电极(RHE)以及在0°C下添加8 ppm苯并三唑(BTA)的情况下,法拉第效率为21.2 %。
更新日期:2018-01-10
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