AUTHOR=Wei Lin , Zeng Deqian , Xie Zongzhuo , Zeng Qingru , Zheng Hongfei , Fujita Toyohisa , Wei Yuezhou 

TITLE=NiO Nanosheets Coupled With CdS Nanorods as 2D/1D Heterojunction for Improved Photocatalytic Hydrogen Evolution

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.655583

DOI=10.3389/fchem.2021.655583

ISSN=2296-2646

ABSTRACT=Designing low-cost, environmental friendliness, and highly active photocatalysts for water splitting is a promising path to relieve energy issues. Herein, one-dimensional (1D) cadmium sulfide (CdS) nanorods are uniformly anchored onto two-dimensional (2D) NiO nanosheets toward enhanced photocatalytic hydrogen evolution. The optimized 2D/1D NiO/CdS photocatalyst exhibits a remarkable boosted hydrogen generation rate of 1300 μmol h-1 g-1 under visible light, which is more than 8 times higher that of CdS nanorods. Moreover, the resultant 5% NiO/CdS composite displays excellent stability over 4 cycles for photocatalytic hydrogen production. The significantly enhanced photocatalytic activity of the 2D/1D NiO/CdS heterojunction can be attributed to the efficient separation of photogenerated charge carriers driven from the formation of p-n NiO/CdS heterojunction. This study paves the new way to develop 2D p-type NiO nanosheets decorated n-type semiconductor photocatalysts for photocatalytic application.