Interface engineering to enhance the oxygen evolution reaction under light irradiation

Han, Shaobo1,2; Cai, Chao1,2; Caiyang, Weinan1; Xiang, Xia1; Deng, Hongxiang1; Zu, Xiaotao1,3,4; Lawrence, Matthew J.6; Sun, Kai5; Gu, Meng2

2019-09-02

10.1063/1.5111374

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

Using a combination of plasmonic metal cores (Ag, Au, and Cu) and catalytic metal/semiconductor shells is a viable approach to enhance photocatalytic chemical reactions such as the oxygen evolution reaction (OER). However, the energy transfer mechanism between the plasmonic core and the catalytic shell as well as the functional mechanism of plasmon in the OER reactions is still unclear. Here, we designed core-shell Au@Ni3S2 and yolk-shell Au-Ni3S2 with well-controlled morphology. We directly mapped the distribution of plasmon using monochromatic low-loss electron energy loss spectroscopy. The structural pore in the yolk-shell Au-Ni3S2 greatly changes the dielectric environment and significantly enhances absorption of incoming light. The incoming photoenergy was dominantly dissipated on the shell by forming electron-hole pairs, leading to a higher energy flow rate for OER reactions. The catalytic activity of yolk-shell Au-Ni3S2 achieved nearly sixfold of core-shell Au@Ni3S2 and over 80-fold of pure Ni3S2 under illumination. Our results suggest that delicate microstructural control of catalysts can be used as an effective approach to design more efficient catalysts.

SCI ; EI

英语

NI期刊

通讯

Fundamental Research Funds for the Central Universities[ZYGX2014J035]

Physics

Physics, Applied

WOS:000484671000015

AMER INST PHYSICS

20193807440399

Catalyst activity ; Electron energy loss spectroscopy ; Electron scattering ; Energy dissipation ; Gold compounds ; Nickel compounds ; Oxygen ; Plasmonics ; Shells (structures)

Structural Members and Shapes:408.2 ; Energy Losses (industrial and residential):525.4 ; Chemical Products Generally:804

PHYSICS

Web of Science

1.Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Sichuan, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Sichuan, Peoples R China
4.Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China
5.Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
6.Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England

Han, Shaobo,Cai, Chao,Caiyang, Weinan,et al. Interface engineering to enhance the oxygen evolution reaction under light irradiation[J]. APPLIED PHYSICS LETTERS,2019,115(10).

Han, Shaobo.,Cai, Chao.,Caiyang, Weinan.,Xiang, Xia.,Deng, Hongxiang.,...&Gu, Meng.(2019).Interface engineering to enhance the oxygen evolution reaction under light irradiation.APPLIED PHYSICS LETTERS,115(10).

Han, Shaobo,et al."Interface engineering to enhance the oxygen evolution reaction under light irradiation".APPLIED PHYSICS LETTERS 115.10(2019).