Issue 48, 2022

Regulating the charge carrier transport rate via bridging ternary heterojunctions to enable CdS nanorods’ solar-driven hydrogen evolution

Abstract

Solar-driven hydrogen generation using single-semiconductor photocatalysts for hydrogen evolution seems to be challenging due to their poor solar to fuel conversion efficiency because of their fast charge carrier recombination. The ternary heterostructure was prepared by an advanced approach to suppress the recombination of photogenerated charge carriers and has contributed a new platform for designing highly efficient photocatalytic systems. Herein, we fabricated a ternary heterojunction with ultrathin WS2–SnS2 nanosheets and CdS nanorods, and the photocatalytic activity was studied. The optimized CdS/SnS2–WS2 (6 wt%) nanostructures were found to be highly stable and exhibited the highest hydrogen evolution rate of 232.45 mmol g−1 h−1, which was almost 93-fold higher than that of the pristine CdS nanorods. Also, Density Functional Theory (DFT) calculations confirmed that the favorable band alignment for charge transport and superior catalytic activity of the newly fabricated ternary nanostructures make them a potential candidate for solar-driven hydrogen production.

Graphical abstract: Regulating the charge carrier transport rate via bridging ternary heterojunctions to enable CdS nanorods’ solar-driven hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
11 Oct 2022
Accepted
14 Nov 2022
First published
15 Nov 2022

Dalton Trans., 2022,51, 18693-18707

Regulating the charge carrier transport rate via bridging ternary heterojunctions to enable CdS nanorods’ solar-driven hydrogen evolution

P. Varma, A. E. Sudheer, A. Aravindh Sasikala Devi, D. Murali and D. Amaranatha Reddy, Dalton Trans., 2022, 51, 18693 DOI: 10.1039/D2DT03285F

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