Обзорная статья

A comprehensive review on LDH-based catalysts to activate persulfates for the degradation of organic pollutants

Eman M. Abd El-MonaemChemistry Department, Faculty of Science, Alexandria University, Alexandria, EgyptHala M. ElshishiniDepartment of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, 163, Horrya Avenue, Alexandria, EgyptSara S. BakrChemistry Department, Faculty of Science, Alexandria University, Alexandria, EgyptHisham G. El-AqapaChemistry Department, Faculty of Science, Alexandria University, Alexandria, EgyptMohamed HosnyGreen Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, 21511, Alexandria, EgyptGangadhar AndaluriCivil and Environmental Engineering Department, College of Engineering, Temple University, Philadelphia, PA, 19122, USAGehan M. El‐SubruitiChemistry Department, Faculty of Science, Alexandria University, Alexandria, EgyptAhmed M. OmerPolymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P. O. Box, 21934, Alexandria, EgyptAbdelazeem S. EltaweilChemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt

2023en

ABI

Аннотация

Abstract Degradation of organic contaminants into less toxic substances is the best option to remove these compounds rather than using conventional techniques. The sulfate radical-based-advanced oxidation process is an effective strategy that degrades organic contaminants by activating peroxymonosulfate (PMS). Such a strategy generates singlet oxygen ( 1 O 2 ), hydroxyl ( $$^ \bullet \!{{{\mathrm{OH}}}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mo>∙</mml:mo></mml:mrow></mml:msup><mml:mspace/><mml:mi>OH</mml:mi></mml:mrow></mml:math> ), and sulfate ( $${{{\mathrm{SO}}}}_4^{ \bullet\! - }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mrow><mml:mi>SO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow><mml:mrow><mml:mo>∙</mml:mo><mml:mspace/><mml:mo>−</mml:mo></mml:mrow></mml:msubsup></mml:math> ) radicals. $${{{\mathrm{SO}}}}_4^{ \bullet \!- }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mrow><mml:mi>SO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow><mml:mrow><mml:mo>∙</mml:mo><mml:mspace/><mml:mo>−</mml:mo></mml:mrow></mml:msubsup></mml:math> is distinguished by its high oxidation selectivity and activity toward the degradation of organic contaminates compared to other radicals. Various catalysts are employed in PMS activation including layered doubled hydroxides (LDHs), which are characterized by their facile synthesis and high catalytic activity. This review article is the first attempt to compile the recent progress in the degradation of common organic pollutants including aromatic compounds, pharmaceutical residues, and dyes via the PMS activation using LDH-based catalysts. The degradation pathways, reaction parameters’ influence, stability of LDHs, and comparisons between different LDH-based catalysts are investigated in this work.

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Идентификаторы

DOI: 10.1038/s41545-023-00245-x

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Цитирований: 3Использованных источников: 0

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