{"title":"ZnCo2S4/CuO heterojunction photocatalyst for activation of persulfate to degrade p-nitrophenol","authors":"Ruoxue Zhou , Hao Cheng , Gunel Imanova , Sridhar Komarneni , Jianfeng Ma","doi":"10.1016/j.jphotochem.2024.116146","DOIUrl":null,"url":null,"abstract":"<div><div>The degradation of <em>para</em>-nitrophenol (PNP) pollutant under visible light (ZnCo<sub>2</sub>S<sub>4</sub>/CuO/PMS/Vis) via ZnCo<sub>2</sub>S<sub>4</sub>/CuO heterojunction activated peroxymonosulfate has been investigated in detail. The results indicate that 50 % ZnCo<sub>2</sub>S<sub>4</sub>/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 <sup>1</sup>O<sub>2</sub> contributes the most to the degradation performance of PNP.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"460 ","pages":"Article 116146"},"PeriodicalIF":4.1000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry and Photobiology A-chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1010603024006907","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍：
JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds.
All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor).
The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.
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