中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 上海硅酸盐研究所
  3. 中国科学院上海硅酸盐研究所
Atom-scale dispersed palladium in a conductive Pd0.1TaS2lattice with a unique electronic structure for efficient hydrogen evolution

文献类型：期刊论文

作者Wang, Dong1; Wang, Xin2; Lu, Yue3; Song, Changsheng1; Pan, Jie1; Li, Chilin1; Sui, Manling3; Zhao, Wei1; Huang, Fuqiang1,2
刊名Journal of Materials Chemistry A
出版日期2017
卷号5期号:43页码:22618-22624
ISSN号20507488
DOI10.1039/c7ta06447k
英文摘要Noble metal catalysts have extraordinary catalytic activity but suffer from high cost; therefore single atom catalysis attracts tremendous attention. Here, we propose atom-scale dispersed palladium (Pd) in a layered TaS2lattice to form new compounds of PdxTaS2, whose crystal structure was resolved by powder X-ray diffraction. The electrical conductivity of metallic Pd0.1TaS2(1.36 × 104S m-1) is twice as large as that of TaS2(6.18 × 103S m-1). This compound applied as a new electrocatalyst for the hydrogen evolution reaction (HER) exhibits excellent catalytic performance with an onset overpotential of 77 mV, superior to those of other catalysts such as TaS2(295 mV) and Pd-loaded TaS2(114 mV). Density functional theory calculations reveal that the interaction of Pd-4d and Ta-5d orbitals results in the upshift of the Fermi level (TaS2versus Pd0.1TaS2) to decrease the barrier height for the HER. Furthermore, the hybridization of Pd-4d and S-3p orbitals builds up pathways along the c axis to improve the conductivity and promote HER performance. It is noted that the amount of Pd used in Pd0.1TaS2is only 4 wt%, compared with 20 wt% in commercial Pd/C catalysts, which is beneficial for its practical application. © 2017 The Royal Society of Chemistry.
源URL[http://ir.sic.ac.cn/handle/331005/25688]  
专题中国科学院上海硅酸盐研究所
作者单位1.State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China;
2.State Key Laboratory of Rare Earth Materials Chemistry and Applications, National Laboratory, College of Chemistry and Molecular Engineering, Peking University, No. 5 Yiheyuan Road,Haidian District, Beijing; 100871, China;
3.Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing; 100124, China
推荐引用方式
GB/T 7714		 Wang, Dong,Wang, Xin,Lu, Yue,et al. Atom-scale dispersed palladium in a conductive Pd0.1TaS2lattice with a unique electronic structure for efficient hydrogen evolution[J]. Journal of Materials Chemistry A,2017,5(43):22618-22624.
APA Wang, Dong.,Wang, Xin.,Lu, Yue.,Song, Changsheng.,Pan, Jie.,...&Huang, Fuqiang.(2017).Atom-scale dispersed palladium in a conductive Pd0.1TaS2lattice with a unique electronic structure for efficient hydrogen evolution.Journal of Materials Chemistry A,5(43),22618-22624.
MLA Wang, Dong,et al."Atom-scale dispersed palladium in a conductive Pd0.1TaS2lattice with a unique electronic structure for efficient hydrogen evolution".Journal of Materials Chemistry A 5.43(2017):22618-22624.

入库方式： OAI收割

来源：上海硅酸盐研究所

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。