Optimization of Fe3O4@SiO2/Ag/AgCl/CdS nanocomposite via response surface methodology: an efficient visible-light photocatalyst for methyl orange degradation
{"title":"Optimization of Fe3O4@SiO2/Ag/AgCl/CdS nanocomposite via response surface methodology: an efficient visible-light photocatalyst for methyl orange degradation","authors":"Hossein Khojasteh, Sarvin Mohammadi-Aghdam, Kamran Heydaryan, Nowjuan Sharifi, Peyman Aspoukeh, Salah Khanahmadzadeh, Behrouz Khezri","doi":"10.1007/s10971-024-06458-x","DOIUrl":null,"url":null,"abstract":"<p>This study introduces a novel Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>/Ag/AgCl/CdS nanocomposite, designed for the efficient photocatalytic degradation of methyl orange (MO), serving as a proxy for synthetic water pollutants under visible light. A combination of co-precipitation, sol-gel, and photodeposition techniques was used to synthesize the desired nanocomposite. Leveraging the response surface methodology (RSM), we optimized the degradation process, achieving an unprecedented near-complete degradation efficiency of 99% within 90 min. The nanocomposite, characterized by an average diameter of 25 nm and uniform size distribution, demonstrated significant photocatalytic activity and stability, maintaining effectiveness over multiple usage cycles. Notably, the incorporation of Ag/AgCl alongside CdS not only extends the light absorption range but also facilitates charge separation, enhancing photocatalytic performance. Additionally, mineralization was confirmed by measuring the Chemical Oxygen Demand (COD) values. This work not only presents a significant advancement in the field of photocatalyst for water purification but also introduces a scalable and effective approach for the development of next-generation photocatalysts. Our findings highlight the potential of magnetic nanocomposites in environmental remediation, offering a sustainable solution for the degradation of organic pollutants.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s10971-024-06458-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
This study introduces a novel Fe3O4@SiO2/Ag/AgCl/CdS nanocomposite, designed for the efficient photocatalytic degradation of methyl orange (MO), serving as a proxy for synthetic water pollutants under visible light. A combination of co-precipitation, sol-gel, and photodeposition techniques was used to synthesize the desired nanocomposite. Leveraging the response surface methodology (RSM), we optimized the degradation process, achieving an unprecedented near-complete degradation efficiency of 99% within 90 min. The nanocomposite, characterized by an average diameter of 25 nm and uniform size distribution, demonstrated significant photocatalytic activity and stability, maintaining effectiveness over multiple usage cycles. Notably, the incorporation of Ag/AgCl alongside CdS not only extends the light absorption range but also facilitates charge separation, enhancing photocatalytic performance. Additionally, mineralization was confirmed by measuring the Chemical Oxygen Demand (COD) values. This work not only presents a significant advancement in the field of photocatalyst for water purification but also introduces a scalable and effective approach for the development of next-generation photocatalysts. Our findings highlight the potential of magnetic nanocomposites in environmental remediation, offering a sustainable solution for the degradation of organic pollutants.
期刊介绍:
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.