{"title":"微波辅助合成nd掺杂La2CuO4钙钛矿光催化剂对废水中甲基橙的强化降解和大肠杆菌的灭活","authors":"Saranya Arumugam , Murad Alsawalha , Priya Srivastava , AnbuMegala Murugesan , Orawan Rojviroon , Ranjith Rajendran , Natacha Phetyim , Thammasak Rojviroon","doi":"10.1016/j.jiec.2025.07.038","DOIUrl":null,"url":null,"abstract":"<div><div>The development of efficient perovskite photocatalysts remains a pivotal area of research for advanced water treatment technologies. In this study, Nd-doped La<sub>2</sub>CuO<sub>4</sub> (La<sub>2-X</sub>Nd<sub>X</sub>CuO<sub>4</sub>) perovskite photocatalysts were synthesized via a facile microwave-assisted combustion method. Comprehensive characterization revealed that the incorporation of Nd<sup>3+</sup> ions into the La<sub>2</sub>CuO<sub>4</sub> lattice significantly modified the structural, optical, and electronic properties of the material, collectively enhancing its photocatalytic degradation efficiency. Among the prepared compositions, La<sub>1.75</sub>Nd<sub>0.25</sub>CuO<sub>4</sub> (LNCO3) exhibited the most remarkable performance, achieving a Methyl Orange (MO) degradation efficiency of 93 % (<em>k</em> = 0.0191 min<sup>−1</sup>), substantially higher than that of pristine La<sub>2</sub>CuO<sub>4</sub> (72 %; <em>k</em> = 0.0088 min<sup>−1</sup>). Kinetic analyses confirmed that the photodegradation process follows a pseudo-first-order model. Radical scavenging experiments and Electron Paramagnetic Resonance (EPR) analysis demonstrated that superoxide radicals (<sup>•</sup>O<sub>2</sub><sup>−</sup>) and hydroxyl radicals (<sup>•</sup>OH) were the predominant reactive oxygen species responsible for pollutant degradation. The photocatalyst also maintained excellent stability and reusability over six consecutive cycles without significant loss of activity. In addition to MO degradation, LNCO3 displayed superior antibacterial activity against Escherichia coli (E. coli) under visible-light irradiation, highlighting its dual functionality for chemical and biological contaminant removal. These findings underscore the potential of Nd-doped La<sub>2</sub>CuO<sub>4</sub> as a robust photocatalyst for environmental remediation.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"151 ","pages":"Pages 802-814"},"PeriodicalIF":5.9000,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microwave-assisted synthesis of Nd-doped La2CuO4 perovskite photocatalysts for enhanced degradation of methyl orange and E. Coli inactivation in wastewater treatment\",\"authors\":\"Saranya Arumugam , Murad Alsawalha , Priya Srivastava , AnbuMegala Murugesan , Orawan Rojviroon , Ranjith Rajendran , Natacha Phetyim , Thammasak Rojviroon\",\"doi\":\"10.1016/j.jiec.2025.07.038\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The development of efficient perovskite photocatalysts remains a pivotal area of research for advanced water treatment technologies. In this study, Nd-doped La<sub>2</sub>CuO<sub>4</sub> (La<sub>2-X</sub>Nd<sub>X</sub>CuO<sub>4</sub>) perovskite photocatalysts were synthesized via a facile microwave-assisted combustion method. Comprehensive characterization revealed that the incorporation of Nd<sup>3+</sup> ions into the La<sub>2</sub>CuO<sub>4</sub> lattice significantly modified the structural, optical, and electronic properties of the material, collectively enhancing its photocatalytic degradation efficiency. Among the prepared compositions, La<sub>1.75</sub>Nd<sub>0.25</sub>CuO<sub>4</sub> (LNCO3) exhibited the most remarkable performance, achieving a Methyl Orange (MO) degradation efficiency of 93 % (<em>k</em> = 0.0191 min<sup>−1</sup>), substantially higher than that of pristine La<sub>2</sub>CuO<sub>4</sub> (72 %; <em>k</em> = 0.0088 min<sup>−1</sup>). Kinetic analyses confirmed that the photodegradation process follows a pseudo-first-order model. Radical scavenging experiments and Electron Paramagnetic Resonance (EPR) analysis demonstrated that superoxide radicals (<sup>•</sup>O<sub>2</sub><sup>−</sup>) and hydroxyl radicals (<sup>•</sup>OH) were the predominant reactive oxygen species responsible for pollutant degradation. The photocatalyst also maintained excellent stability and reusability over six consecutive cycles without significant loss of activity. In addition to MO degradation, LNCO3 displayed superior antibacterial activity against Escherichia coli (E. coli) under visible-light irradiation, highlighting its dual functionality for chemical and biological contaminant removal. These findings underscore the potential of Nd-doped La<sub>2</sub>CuO<sub>4</sub> as a robust photocatalyst for environmental remediation.</div></div>\",\"PeriodicalId\":363,\"journal\":{\"name\":\"Journal of Industrial and Engineering Chemistry\",\"volume\":\"151 \",\"pages\":\"Pages 802-814\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2025-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Industrial and Engineering Chemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1226086X25004927\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Industrial and Engineering Chemistry","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1226086X25004927","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Microwave-assisted synthesis of Nd-doped La2CuO4 perovskite photocatalysts for enhanced degradation of methyl orange and E. Coli inactivation in wastewater treatment
The development of efficient perovskite photocatalysts remains a pivotal area of research for advanced water treatment technologies. In this study, Nd-doped La2CuO4 (La2-XNdXCuO4) perovskite photocatalysts were synthesized via a facile microwave-assisted combustion method. Comprehensive characterization revealed that the incorporation of Nd3+ ions into the La2CuO4 lattice significantly modified the structural, optical, and electronic properties of the material, collectively enhancing its photocatalytic degradation efficiency. Among the prepared compositions, La1.75Nd0.25CuO4 (LNCO3) exhibited the most remarkable performance, achieving a Methyl Orange (MO) degradation efficiency of 93 % (k = 0.0191 min−1), substantially higher than that of pristine La2CuO4 (72 %; k = 0.0088 min−1). Kinetic analyses confirmed that the photodegradation process follows a pseudo-first-order model. Radical scavenging experiments and Electron Paramagnetic Resonance (EPR) analysis demonstrated that superoxide radicals (•O2−) and hydroxyl radicals (•OH) were the predominant reactive oxygen species responsible for pollutant degradation. The photocatalyst also maintained excellent stability and reusability over six consecutive cycles without significant loss of activity. In addition to MO degradation, LNCO3 displayed superior antibacterial activity against Escherichia coli (E. coli) under visible-light irradiation, highlighting its dual functionality for chemical and biological contaminant removal. These findings underscore the potential of Nd-doped La2CuO4 as a robust photocatalyst for environmental remediation.
期刊介绍:
Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.