Issue 12, 2024

A bimetallic CoZn metal–organic-framework derived CoZnS@NSC Co-catalyst loaded on g-C3N4 for significantly augmented photocatalytic H2 evolution

Abstract

The main existing issues in graphitic carbon nitride (g-C3N4) based photocatalytic hydrogen (H2) production include poor separation and transfer of photogenerated charge carriers and low optical absorption. Thus, the construction of a multicomponent co-catalyst and its integration with g-C3N4 to facilitate the transport and separation of photoexcited charge carriers are regarded as a promising approach for augmenting the photocatalytic H2 production activity. In this study, we report CoZnS@NSC-X/g-C3N4 (where X indicates sulfidation times of 15, 30, 45, and 60 min) nanocomposites constructed from a CoZn-MOF derived CoS2, Co3S4 and ZnS intercalated nitrogen/sulfur-doped carbon (CoZnS@NSC) nanoparticle co-catalyst and g-C3N4 for H2 production from water splitting. The maximum photocatalytic H2 evolution rate (610.8 μmol h−1 g−1) of the CoZnS@NSC-15/g-C3N4 heterostructure, with an optimized CoZnS@NSC loading of 10 wt% and 15 min sulfidation, is nearly 3.7 and 290.9 times higher than those of unsulfidated CoZn@NC/g-C3N4 and bare g-C3N4, respectively. This significantly boosted photocatalytic performance is attributed to the efficient separation and transfer of electron–hole (e/h+) pairs and electronic conductivity caused by the appropriate sulfidation time and loading amount of CoZnS@NSC nanoparticles. This work offers a facile approach to designing metal–organic framework derived co-catalyst modified semiconductor-based photocatalysts for high-performance in practical applications.

Graphical abstract: A bimetallic CoZn metal–organic-framework derived CoZnS@NSC Co-catalyst loaded on g-C3N4 for significantly augmented photocatalytic H2 evolution

Supplementary files

Article information

Article type
Research Article
Submitted
12 Mar 2024
Accepted
22 Apr 2024
First published
24 Apr 2024

Inorg. Chem. Front., 2024,11, 3435-3445

A bimetallic CoZn metal–organic-framework derived CoZnS@NSC Co-catalyst loaded on g-C3N4 for significantly augmented photocatalytic H2 evolution

X. Lu, I. Ullah, J. Li, S. Chen, C. Yuan and A. Xu, Inorg. Chem. Front., 2024, 11, 3435 DOI: 10.1039/D4QI00644E

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