Ameliorative photocatalytic dye degradation performance of ternary Co3O4/MoS2/TiO2 nanocomposite under visible light illumination

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-03-05 DOI:10.1016/j.jtice.2025.106062

N. Elavarasan , Gopal Venkatesh , Govindasami Periyasami , Kiky Corneliasari Sembiring , Jintae Lee , Govindasamy Palanisamy

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引用次数: 0

Abstract

Background

This research aimed to synthesize a novel ternary nanohybrid material, Co₃O₄/MoS₂/TiO₂ (CMT), to enhance photocatalytic degradation of methylene blue (MB) under light irradiation. Conventional photocatalysts often suffer from limited efficiency, so integrating Co₃O₄, MoS₂ and TiO₂ aimed to overcome these challenges by improving charge transfer and separation of electron-hole (e⁻/h⁺) pairs.

Methods

The CMT nanocomposites were synthesized using calcination and hydrothermal methods. Various spectroscopic and microscopic techniques were employed to characterize the CMT nanocomposites, and their photocatalytic activity was evaluated by testing MB degradation efficiency. Kinetic studies were also performed to assess the reaction rate, while the material's stability was tested over five degradation cycles.

Significant findings

The CMT nanocomposites demonstrated remarkable photocatalytic performance, achieving 94.77 % MB degradation, outperforming other materials. The kinetic rate constant was 0.0181 min⁻¹, 4.02 times higher than alternative samples. Enhanced charge transfer between Co₃O₄ and the other components contributed to efficient e⁻/h⁺ pair separation. The photocatalyst remained stable over repeated use, and superoxide radicals (•O₂⁻) were identified as the dominant reactive species during MB degradation, highlighting the material's efficiency and durability.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.