{"title":"Photoelectrodegradation and sensing of pentachlorophenol using In and Mn metalated porphyrins in the presence of TiO2 nanoparticles","authors":"Mbulelo Jokazi, Sixolile Centane, Philani Mashazi, Tebello Nyokong","doi":"10.1016/j.jphotochem.2024.116118","DOIUrl":null,"url":null,"abstract":"<div><div>This work reports on the study of electrochemical sensing, photodegradation and photoelectrodegradation of pentachlorophenol (PCP). Pentachlorophenol is a toxic compound that is used in the pharmaceutical industries and agriculture. It contaminates water through highly improper disposals and is carcinogenic. Electrochemical sensing was carried out using cyclic voltammetry to detect PCP using indium and manganese metalated porphyrins, TiO<sub>2</sub> nanoparticles and TiO<sub>2</sub>-metalloporphyrin composite as catalysts. A conductive indium tin oxide (ITO) was used as a semiconductor. The TiO<sub>2</sub>-metalloporphyrin complexes showed the best catalytic activity in both sensing and degradation. Photoelectrodegradation resulted in high efficiency compared to photodegradation and the introduction of H<sub>2</sub>O<sub>2</sub> resulted in complete degradation of PCP.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"460 ","pages":"Article 116118"},"PeriodicalIF":4.1000,"publicationDate":"2024-11-01","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/S1010603024006622","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
This work reports on the study of electrochemical sensing, photodegradation and photoelectrodegradation of pentachlorophenol (PCP). Pentachlorophenol is a toxic compound that is used in the pharmaceutical industries and agriculture. It contaminates water through highly improper disposals and is carcinogenic. Electrochemical sensing was carried out using cyclic voltammetry to detect PCP using indium and manganese metalated porphyrins, TiO2 nanoparticles and TiO2-metalloporphyrin composite as catalysts. A conductive indium tin oxide (ITO) was used as a semiconductor. The TiO2-metalloporphyrin complexes showed the best catalytic activity in both sensing and degradation. Photoelectrodegradation resulted in high efficiency compared to photodegradation and the introduction of H2O2 resulted in complete degradation of PCP.
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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