Photoelectrodegradation and sensing of pentachlorophenol using In and Mn metalated porphyrins in the presence of TiO2 nanoparticles

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-11-01 DOI:10.1016/j.jphotochem.2024.116118

Mbulelo Jokazi, Sixolile Centane, Philani Mashazi, Tebello Nyokong

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.

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在 TiO2 纳米粒子存在下使用 In 和 Mn 金属化卟啉对五氯苯酚进行光电降解和传感

本研究报告介绍了五氯苯酚（PCP）的电化学传感、光降解和光电降解研究。五氯苯酚是一种有毒化合物，主要用于制药业和农业。由于处理不当，五氯苯酚会污染水源，并具有致癌性。使用铟和锰金属化卟啉、TiO2 纳米粒子和 TiO2-金属卟啉复合材料作为催化剂，采用循环伏安法进行电化学传感，检测五氯苯酚。导电铟锡氧化物（ITO）被用作半导体。二氧化钛-金属卟啉复合物在传感和降解方面都表现出最佳的催化活性。与光降解相比，光电降解的效率更高，而引入 H2O2 则可使五氯苯酚完全降解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

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.