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LaCoO3/SBA-15 as a high surface area catalyst to activate peroxymonosulfate for degrading atrazine in water.
Afzal, Shahzad; Chen, Lele; Jin, Lingyue; Pan, Ke; Wei, Yang; Ahmad, Munir; Hassan, Qadeer Ul; Zhang, Ming; Ashraf, Ghulam Abbas; Liu, Liangkai.
Afiliación
  • Afzal S; Department of Environmental Engineering, China Jiliang University Hangzhou, Zhejiang, 310018, China; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry
  • Chen L; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China.
  • Jin L; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China.
  • Pan K; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China.
  • Wei Y; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China.
  • Ahmad M; College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China.
  • Hassan QU; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
  • Zhang M; Department of Environmental Engineering, China Jiliang University Hangzhou, Zhejiang, 310018, China.
  • Ashraf GA; College of Environment, Hohai University, Nanjing, 210098, China.
  • Liu L; Department of Environmental Engineering, China Jiliang University Hangzhou, Zhejiang, 310018, China.
Environ Pollut ; 349: 123885, 2024 May 15.
Article en En | MEDLINE | ID: mdl-38570159
ABSTRACT
An efficient perovskite-based heterogeneous catalyst is highly desired to activate peroxymonosulfate (PMS) for removing organic pollutants in water. A high surface area PMS-activator was fabricated by loading LaCoO3 on SBA-15 to degrade atrazine (ATR) in water. The LaCoO3/SBA-15 depicted better textural properties and higher catalytic activity than LaCoO3. In 6.0 min, atrazine (ATZ) degradation in the selected LaCoO3/SBA-15/PMS system, LaCoO3, adsorption by LaCoO3/SBA-15, sole PMS processes reached approximately 100%, 55.15%, 12.80%, and 16.65 % respectively. Furthermore, 0.04 mg L-1 Co was leached from LaCoO3/SBA-15 during PMS activation by LaCoO3/SBA-15. The LaCoO3/SBA-15 showed stable catalytic activity after reuse. The use of radical scavengers and electron paramagnetic resonance spectroscopy (EPR) demonstrated that ROS such as 1O2, O2•-, •OH, and SO4•- were generated by PMS activated by LaCoO3/SBA-15 owing to redox reactions [Co2+/Co3+, and O2-/O2]. EPR, XPS, ATR-FTIR, EIS, LSV, and chronoamperometric measurements were used to explain the catalytic mechanism for PMS activation. Excellent atrazine degradation was due to high surface area, porous nature, diffusion-friendly structure, and ROS. Our investigation proposes that perovskites with different A and B metals and modified perovskites can be loaded on high surface area materials to activate PMS into ROS.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Peróxidos / Atrazina / Contaminantes Químicos del Agua / Dióxido de Silicio Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Peróxidos / Atrazina / Contaminantes Químicos del Agua / Dióxido de Silicio Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido