ZnCo2S4/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol

Ruoxue Zhou; Hao Cheng; Gunel Imanova; Sridhar Komarneni; Jianfeng Ma

doi:10.1016/j.jphotochem.2024.116146

ZnCo₂S₄/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol

Ruoxue Zhou, Hao Cheng, Gunel Imanova, Sridhar Komarneni, Jianfeng Ma

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Abstract

The degradation of para-nitrophenol (PNP) pollutant under visible light (ZnCo₂S₄/CuO/PMS/Vis) via ZnCo₂S₄/CuO heterojunction activated peroxymonosulfate has been investigated in detail. The results indicate that 50 % ZnCo₂S₄/CuO performs best under light conditions, and after adding 4 mM PMS, the degradation rate of PNP reaches 98 %. The study systematically examines the effects of important parameters (PMS dosage, pH, and coexisting anions) on PNP degradation and verifies the excellent performance of the photocatalysis-activated PMS system through comparative experiments. Electron paramagnetic resonance (ESR) and free radical quenching experiments revealed that ¹O₂ contributes the most to the degradation performance of PNP.

Original language	English (US)
Article number	116146
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	460
DOIs	https://doi.org/10.1016/j.jphotochem.2024.116146
State	Published - Mar 1 2025

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
General Physics and Astronomy

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10.1016/j.jphotochem.2024.116146

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title = "ZnCo2S4/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol",

abstract = "The degradation of para-nitrophenol (PNP) pollutant under visible light (ZnCo2S4/CuO/PMS/Vis) via ZnCo2S4/CuO heterojunction activated peroxymonosulfate has been investigated in detail. The results indicate that 50 % ZnCo2S4/CuO performs best under light conditions, and after adding 4 mM PMS, the degradation rate of PNP reaches 98 %. The study systematically examines the effects of important parameters (PMS dosage, pH, and coexisting anions) on PNP degradation and verifies the excellent performance of the photocatalysis-activated PMS system through comparative experiments. Electron paramagnetic resonance (ESR) and free radical quenching experiments revealed that 1O2 contributes the most to the degradation performance of PNP.",

author = "Ruoxue Zhou and Hao Cheng and Gunel Imanova and Sridhar Komarneni and Jianfeng Ma",

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T1 - ZnCo2S4/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol

AU - Zhou, Ruoxue

AU - Cheng, Hao

AU - Imanova, Gunel

AU - Komarneni, Sridhar

AU - Ma, Jianfeng

PY - 2025/3/1

Y1 - 2025/3/1

N2 - The degradation of para-nitrophenol (PNP) pollutant under visible light (ZnCo2S4/CuO/PMS/Vis) via ZnCo2S4/CuO heterojunction activated peroxymonosulfate has been investigated in detail. The results indicate that 50 % ZnCo2S4/CuO performs best under light conditions, and after adding 4 mM PMS, the degradation rate of PNP reaches 98 %. The study systematically examines the effects of important parameters (PMS dosage, pH, and coexisting anions) on PNP degradation and verifies the excellent performance of the photocatalysis-activated PMS system through comparative experiments. Electron paramagnetic resonance (ESR) and free radical quenching experiments revealed that 1O2 contributes the most to the degradation performance of PNP.

AB - The degradation of para-nitrophenol (PNP) pollutant under visible light (ZnCo2S4/CuO/PMS/Vis) via ZnCo2S4/CuO heterojunction activated peroxymonosulfate has been investigated in detail. The results indicate that 50 % ZnCo2S4/CuO performs best under light conditions, and after adding 4 mM PMS, the degradation rate of PNP reaches 98 %. The study systematically examines the effects of important parameters (PMS dosage, pH, and coexisting anions) on PNP degradation and verifies the excellent performance of the photocatalysis-activated PMS system through comparative experiments. Electron paramagnetic resonance (ESR) and free radical quenching experiments revealed that 1O2 contributes the most to the degradation performance of PNP.

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JO - Journal of Photochemistry and Photobiology A: Chemistry

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ZnCo₂S₄/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol

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