Naureen Hussain, Mahnoor Zeb, Muhammad Irfan, Muhammad Zeeshan, F. Akbar Jan
{"title":"硫化锌纳米颗粒对酸性绿25 （AG-25）染料的优化吸附：响应面法","authors":"Naureen Hussain, Mahnoor Zeb, Muhammad Irfan, Muhammad Zeeshan, F. Akbar Jan","doi":"10.1007/s11243-025-00636-8","DOIUrl":null,"url":null,"abstract":"<div><p>This study explores the synthesis, characterization, and optimization of zinc sulfide nanoparticles (ZnS-NPs) for the adsorption of <i>Acid Green 25 (AG-25)</i> dye from wastewater. ZnS-NPs were synthesized via the co-precipitation method and characterized by SEM, EDX, UV–Vis, FTIR, and XRD analyses, confirming a granular hierarchical structure, high purity showing a significant absorption peak at 310 nm and face-centered cubic crystal lattice with characteristic peaks matching with JCPDS file number 5-0566. The calculated band gap was 3.5 eV and the point of zero charge (PZC) was 5.84 indicating pH-dependent surface charge properties. Maximum adsorption was achieved using 0.3 g of ZnS-NPs adsorbent dose and 10 ppm of dye at pH 3 in 30 min; adsorption process followed the pseudo-first-order model (<i>R</i><sup>2</sup> = 0.997) suggesting physisorption, while followed isotherm model was Temkin isotherm with <i>R</i><sup>2</sup> = 0.8202 describing the adsorption equilibrium highlighting interactions between adsorbate molecules. Response Surface Methodology (RSM) optimization was used with Central Composite Design (CCD) to evaluate four factors such as pH, adsorbent dose, dye concentration and contact time to maximize adsorption efficiency. ANOVA analysis revealed a highly significant quadratic model (<i>p</i> < 0.0001) with optimal conditions for dye removal and validated experimentally with a negligible error of 1.2% compared to predicted values. The RSM model demonstrated high predictive accuracy with <i>R</i><sup>2</sup> = 0.9784 and an insignificant lack of fit (<i>p</i> = 0.1337) underscoring ZnS-NPs as a robust, cost-effective and environmentally friendly adsorbent for industrial wastewater treatment.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 4","pages":"499 - 513"},"PeriodicalIF":1.7000,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimized adsorption of Acid Green 25 (AG-25) dye using zinc sulfide (ZnS) nanoparticles: a Response Surface Methodology approach\",\"authors\":\"Naureen Hussain, Mahnoor Zeb, Muhammad Irfan, Muhammad Zeeshan, F. Akbar Jan\",\"doi\":\"10.1007/s11243-025-00636-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study explores the synthesis, characterization, and optimization of zinc sulfide nanoparticles (ZnS-NPs) for the adsorption of <i>Acid Green 25 (AG-25)</i> dye from wastewater. ZnS-NPs were synthesized via the co-precipitation method and characterized by SEM, EDX, UV–Vis, FTIR, and XRD analyses, confirming a granular hierarchical structure, high purity showing a significant absorption peak at 310 nm and face-centered cubic crystal lattice with characteristic peaks matching with JCPDS file number 5-0566. The calculated band gap was 3.5 eV and the point of zero charge (PZC) was 5.84 indicating pH-dependent surface charge properties. Maximum adsorption was achieved using 0.3 g of ZnS-NPs adsorbent dose and 10 ppm of dye at pH 3 in 30 min; adsorption process followed the pseudo-first-order model (<i>R</i><sup>2</sup> = 0.997) suggesting physisorption, while followed isotherm model was Temkin isotherm with <i>R</i><sup>2</sup> = 0.8202 describing the adsorption equilibrium highlighting interactions between adsorbate molecules. Response Surface Methodology (RSM) optimization was used with Central Composite Design (CCD) to evaluate four factors such as pH, adsorbent dose, dye concentration and contact time to maximize adsorption efficiency. ANOVA analysis revealed a highly significant quadratic model (<i>p</i> < 0.0001) with optimal conditions for dye removal and validated experimentally with a negligible error of 1.2% compared to predicted values. The RSM model demonstrated high predictive accuracy with <i>R</i><sup>2</sup> = 0.9784 and an insignificant lack of fit (<i>p</i> = 0.1337) underscoring ZnS-NPs as a robust, cost-effective and environmentally friendly adsorbent for industrial wastewater treatment.</p></div>\",\"PeriodicalId\":803,\"journal\":{\"name\":\"Transition Metal Chemistry\",\"volume\":\"50 4\",\"pages\":\"499 - 513\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2025-02-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transition Metal Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11243-025-00636-8\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transition Metal Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11243-025-00636-8","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Optimized adsorption of Acid Green 25 (AG-25) dye using zinc sulfide (ZnS) nanoparticles: a Response Surface Methodology approach
This study explores the synthesis, characterization, and optimization of zinc sulfide nanoparticles (ZnS-NPs) for the adsorption of Acid Green 25 (AG-25) dye from wastewater. ZnS-NPs were synthesized via the co-precipitation method and characterized by SEM, EDX, UV–Vis, FTIR, and XRD analyses, confirming a granular hierarchical structure, high purity showing a significant absorption peak at 310 nm and face-centered cubic crystal lattice with characteristic peaks matching with JCPDS file number 5-0566. The calculated band gap was 3.5 eV and the point of zero charge (PZC) was 5.84 indicating pH-dependent surface charge properties. Maximum adsorption was achieved using 0.3 g of ZnS-NPs adsorbent dose and 10 ppm of dye at pH 3 in 30 min; adsorption process followed the pseudo-first-order model (R2 = 0.997) suggesting physisorption, while followed isotherm model was Temkin isotherm with R2 = 0.8202 describing the adsorption equilibrium highlighting interactions between adsorbate molecules. Response Surface Methodology (RSM) optimization was used with Central Composite Design (CCD) to evaluate four factors such as pH, adsorbent dose, dye concentration and contact time to maximize adsorption efficiency. ANOVA analysis revealed a highly significant quadratic model (p < 0.0001) with optimal conditions for dye removal and validated experimentally with a negligible error of 1.2% compared to predicted values. The RSM model demonstrated high predictive accuracy with R2 = 0.9784 and an insignificant lack of fit (p = 0.1337) underscoring ZnS-NPs as a robust, cost-effective and environmentally friendly adsorbent for industrial wastewater treatment.
期刊介绍：
Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc.
Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.
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