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Abstract <p>Innovative tactics for environmental remediation through carbon management are vital due to the growing problems imposed by pollution and climate change. To protect the environment, heterojunction-based photocatalytic systems have become a probable technology for CO<sub>2</sub> reduction to sustainable hydrocarbon fuels generation and sustainable waste degradation. In this study, various Bi<sub>2</sub>S<sub>3</sub>/CuMoO<sub>4</sub> heterojunction photocatalysts are synthesized using hydrothermal treatment and characterized by XRD, SEM, TEM, BET, UV–Vis, PL, EIS, and XPS analyses. In particular, the role of Bi<sub>2</sub>S<sub>3</sub> with different weight percentage loading onto CuMoO<sub>4</sub> is investigated. Among all synthesized photocatalysts, the optimum 5wt% Bi<sub>2</sub>S<sub>3</sub>/CuMoO<sub>4</sub> photocatalyst exhibiting an enhanced visible light absorption capacity with the tunable bandgap energy of 1.71&#xa0;eV offers selective photoreduction of CO<sub>2</sub> to methanol as a sustainable fuel up to 306.7&#xa0;µmol g<sub>cat</sub><sup>−1</sup>&#xa0;h<sup>−1</sup>. The renewable product obtained from photocatalytic CO<sub>2</sub> reduction study is analysed and quantified by NMR spectroscopy. Despite a multi-cycle run up to three cycles, the direct Z-scheme interphase layer of 5wt% Bi<sub>2</sub>S<sub>3</sub>/CuMoO<sub>4</sub> heterojunction photocatalyst promotes higher charge separation and electron transfer to the surface reactive zones for reducing the trapped CO<sub>2</sub> to 100% selective methanol formation.</p> Graphical abstract <p></p>

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Photocatalytic reduction of CO2 to sustainable hydrocarbon fuel using Bi2S3-incorporated CuMoO4 photocatalyst

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Akshay Kumar Dey,
  • Kallol Kumar Mandal,
  • Raju Bisai,
  • Rajashree Chakrabarti,
  • Sourav Bachhar,
  • Sayan Sarkar,
  • Ramananda Maity,
  • Kuntal Pal,
  • Biswajit Kamila,
  • Arindam Mandal

摘要

Abstract

Innovative tactics for environmental remediation through carbon management are vital due to the growing problems imposed by pollution and climate change. To protect the environment, heterojunction-based photocatalytic systems have become a probable technology for CO2 reduction to sustainable hydrocarbon fuels generation and sustainable waste degradation. In this study, various Bi2S3/CuMoO4 heterojunction photocatalysts are synthesized using hydrothermal treatment and characterized by XRD, SEM, TEM, BET, UV–Vis, PL, EIS, and XPS analyses. In particular, the role of Bi2S3 with different weight percentage loading onto CuMoO4 is investigated. Among all synthesized photocatalysts, the optimum 5wt% Bi2S3/CuMoO4 photocatalyst exhibiting an enhanced visible light absorption capacity with the tunable bandgap energy of 1.71 eV offers selective photoreduction of CO2 to methanol as a sustainable fuel up to 306.7 µmol gcat−1 h−1. The renewable product obtained from photocatalytic CO2 reduction study is analysed and quantified by NMR spectroscopy. Despite a multi-cycle run up to three cycles, the direct Z-scheme interphase layer of 5wt% Bi2S3/CuMoO4 heterojunction photocatalyst promotes higher charge separation and electron transfer to the surface reactive zones for reducing the trapped CO2 to 100% selective methanol formation.

Graphical abstract