Rational construction of Au–Ag bimetallic island-shaped nanoplates for electrocatalysis
文献类型：期刊论文
| 作者 | Zhao,Hong1; Liu,Diandian1; Xu,Shujuan4; Chen,Yao1; Yin,Fujun1; Yang,Tao1; Wang,Mingyan1; Deng,Hua2; Zhang,Wei3 ; Liu,Weiwei1
|
| 刊名 | Materials Research Express
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 7期号:2 |
| 关键词 | bimetallic nanoplates Au–Ag alloy chemistry modification electrocatalysts hydrogen evolution electrocatalysis |
| DOI | 10.1088/2053-1591/ab726e |
| 英文摘要 | Abstract Active electrocatalysts are the key to water splitting for hydrogen production through the electrolysis. In this paper, 50 nm silver nanoplates were used as templates for synthesis of Au–Ag island-shaped nanoplates by controlling the surface chemistry. The guiding mechanism of polyvinylpyrrolidone (PVP, Mw?=?40 000) to Au–Ag island-shaped nanoplates crystal was also further investigated. It is found that the surface energy of Ag nanoplates between (100) and (111) crystal planes can be regulated by varying the amount of PVP in the system. Then a uniform Au-Ag triangular island nanostructure was obtained. Compared with the Ag nanoplates catalysts, the Au–Ag island nanoplates catalysts show the superior catalytic performances in hydrogen evolution electrocatalysis (HER). These results demonstrate a new surface chemistry modification by PVP and a galvanic displacement reaction for designing the active electrocatalysts. More importantly, the Au–Ag island-shaped nanoplates show an unconventional growth mode of preserving the original Ag nano-triangular crystal structure. The enhanced performance in electrocatalysis can be mainly attributed to Au–Ag alloy structure, which allows the appearance of synergistic effects. The present work demonstrates the crucial roles of surface chemistry in catalysts synthesis, which may guide the design of active bimetallic catalysts. |
| 语种 | 英语 |
| WOS记录号 | IOP:2053-1591-7-2-AB726E |
| 出版者 | IOP Publishing |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10349]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Department of Chemical Engineering, College of Pharmaceutical sciences, Jiangsu Ocean University, Lianyungang 222000, People’s Republic of China 2.Chongqing Youth Vocational & Technical College, Chongqing 400712, People’s Republic of China 3.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, People’s Republic of China 4.School of Structure Engineering, Lianyungang technical college, Lianyungang 222000, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Zhao,Hong,Liu,Diandian,Xu,Shujuan,et al. Rational construction of Au–Ag bimetallic island-shaped nanoplates for electrocatalysis[J]. Materials Research Express,2020,7(2). |
| APA | Zhao,Hong.,Liu,Diandian.,Xu,Shujuan.,Chen,Yao.,Yin,Fujun.,...&Liu,Xiaohong.(2020).Rational construction of Au–Ag bimetallic island-shaped nanoplates for electrocatalysis.Materials Research Express,7(2). |
| MLA | Zhao,Hong,et al."Rational construction of Au–Ag bimetallic island-shaped nanoplates for electrocatalysis".Materials Research Express 7.2(2020). |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。