Surface decorated Ni sites for superior photocatalytic hydrogen production

SusMat

article

Wenhuan Huang¹  Tingting Bo³  Shouwei Zuo²  Yunzhi Wang²  Jiamin Chen¹  Samy Ould-Chikh²  Yang Li²  Wei Zhou³  Jing Zhang⁴  Huabin Zhang² 

[1] Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology;KAUST Catalysis Center ,(KCC), King Abdullah University of Science and Technology;Department of Applied Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University;Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences

关键词: electron transfer;    hydrogen evolution;    molecular activation;    photocatalysis;    single atom catalyst;   

DOI  :  10.1002/sus2.76

学科分类：电力

来源: Wiley

【 摘 要 】

Precise construction of isolated reactive centers on semiconductors with well-controlled configurations affords a great opportunity to investigate the reaction mechanisms in the photocatalytic process and realize the targeted conversion of solar energy to steer the charge kinetics for hydrogen evolution. In the current research, we decorated isolated Ni atoms on the surface of CdS nanowires for efficient photocatalytic hydrogen production. X-ray absorption fine structure investigations clearly demonstrate the atomical dispersion of Ni sites on the surface of CdS nanowires. Experimental investigations reveal that the isolated Ni atoms not only perform well as the real reactive centers but also greatly accelerate the electron transfer via direct Ni–S coordination. Theoretical simulation further documents that the hydrogen adsorption process has also been enhanced over the semi-coordinated Ni centers through electronic coupling at the atomic scale.

【 授权许可】

CC BY