The highly efficient visible-light-induced photoactivity of novel Cu2CdSnS4/Pt/g-C3N5 ternary heterojunction with enhanced photocatalytic methylene blue degradation and hydrogen production

IF 6.7 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2025-03-25 DOI:10.1016/j.fuel.2025.135187

Saravanan Kamalakannan , Natarajan Balasubramaniyan , Bernaurdshaw Neppolian , Venkatramaiah Nutalapati

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引用次数: 0

Abstract

We have synthesized a novel Z-scheme Cu₂CdSnS₄/Pt/g-C₃N₅ ternary heterojunction with different amounts of Pt by the photo-deposition-hydrothermal method for photocatalytic performance. As a result of the fast electron-hole recombination and the insufficient absorption of solar light, Cu₂CdSnS₄/Pt/g-C₃N₅ retains its best photocatalytic activities. It has been possible to characterize Cu₂CdSnS₄/Pt/g-C₃N₅ heterojunction photocatalysts, which are composed of Cu₂CdSnS₄ and Pt/g-C₃N₅ nanosheets, using different techniques. It was found that the final composite Cu₂CdSnS₄/Pt/g-C₃N₅ heterojunction produced 6482μmol g⁻¹ hydrogen 3 h under visible light irradiation, which was 54 times higher than the pristine g-C₃N₅ heterojunction and 11 times higher than the pristine Cu₂CdSnS₄ heterojunction. The sacrificial electron donors triethanolamine (TEOA) and methanol produced higher hydrogen evolution rates than glycerol 3958μmol g^{− 1} while exhibiting longer photostability of 6482μmol g^{− 1} and 5684μmol g^{− 1}, respectively. It was found that the final sample Cu₂CdSnS₄/Pt/g-C₃N₅ heterojunction photocatalysts displayed excellent photocatalytic activity for the degradation of methylene blue (MB) to pristine g-C₃N₅. There is an increase in degradation rate over pristine g-C₃N₅ (R² = 0.916) with composite Cu₂CdSnS₄/Pt/g-C₃N₅. In this study, heterojunction photocatalysts have been demonstrated to have excellent photocatalytic MB degradation and hydrogen production.

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来源期刊

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.