Fabrication of Ni2P Cocatalyzed CdS Nanorods with a Well-Defined Heterointerface for Enhanced Photocatalytic H2 Evolution

Catalysts

Kangzhong Shi¹  Xi Du¹  Qin Cheng²  Zhaoming Xue²  Song Sun²  Mengdie Cai²  Siyu Cao²  Xianchun Liu²  Zhenzhen Zhuo²  Lu Shi²  Rui Wang²  Cheng Shen²  Xue Wang² 

[1] Eastman Shuangwei Fibers Company Limited, Hefei 230601, China;School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China;

关键词: H₂ evolution;    photocatalysis;    CdS nanorods;    core-shell structure;    Ni₂P nanoparticles;   

DOI  :  10.3390/catal12040417

来源: DOAJ

【 摘 要 】

Developing non-noble metal photocatalysts for efficient photocatalytic hydrogen evolution is crucial for exploiting renewable energy. In this study, a photocatalyst of Ni₂P/CdS nanorods consisting of cadmium sulfide (CdS) nanorods (NRs) decorated with Ni₂P nanoparticles (NPs) was fabricated using an in-situ solvothermal method with red phosphor (P) as the P source. Ni₂P NPs were tightly anchored on the surface of CdS NRs to form a core-shell structure with a well-defined heterointerface, aiming to achieve a highly efficient photocatalytic H₂ generation. The as-synthesized 2%Ni₂P/CdS NRs photocatalyst exhibited the significantly improved photocatalytic H₂ evolution rate of 260.2 μmol∙h⁻¹, more than 20 folds higher than that of bare CdS NRs. Moreover, the as-synthesized 2%Ni₂P/CdS NRs photocatalyst demonstrated an excellent stability, even better than that of Pt/CdS NRs. The photocatalytic performance enhancement was ascribed to the core-shell structure with the interfacial Schottky junction between Ni₂P NPs and CdS NRs and the accompanying fast and effective photogenerated charge carriers’ separation and transfer. This work provides a new strategy for designing non-noble metal photocatalysts to replace the noble catalysts for photocatalytic water splitting.

【 授权许可】

Unknown