Kashmala Khaliq, Mohsin Ali Raza Anjum, Shabnam Shahida, Ramzan Akhtar, Adil Khan, Munib Ahmad Shafiq, Iqra Rafiq, Muhammad Rehan, Rashid Nazir Qureshi, Sajid Iqbal, Jong-Il Yun and Muhammad Saifullah
{"title":"磺化聚苯乙烯树脂负载氧化钨螯合Pb2+离子的研制","authors":"Kashmala Khaliq, Mohsin Ali Raza Anjum, Shabnam Shahida, Ramzan Akhtar, Adil Khan, Munib Ahmad Shafiq, Iqra Rafiq, Muhammad Rehan, Rashid Nazir Qureshi, Sajid Iqbal, Jong-Il Yun and Muhammad Saifullah","doi":"10.1039/D5RA01017A","DOIUrl":null,"url":null,"abstract":"<p >A sulfonated polystyrene resin-supported tungsten oxide (SO<small><sub>3</sub></small>-PSWO) was synthesized and evaluated for its efficiency in removing lead (Pb<small><sup>2+</sup></small>) from aqueous solutions. Morphology, phase purity, structural properties, thermal stability, and elemental composition of SO<small><sub>3</sub></small>-PSWO, are evaluated using SEM, XRD, FTIR, TGA, and CHNS analyzers. The ICP-OES technique was utilized for quantitative measurements of the Pb<small><sup>2+</sup></small> ions. The influence of key parameters such as pH, adsorbent dose, contact time, metal ion concentration, temperature, and interference of competing ions on Pb<small><sup>2+</sup></small> removal is systematically investigated. Under optimum conditions (pH 3.5–5.5), SO<small><sub>3</sub></small>-PSWO achieved a maximum Pb<small><sup>2+</sup></small> removal efficiency of 99.7% within one hour and demonstrated an exceptional adsorption capacity of 386 mg g<small><sup>−1</sup></small>, as described by the Langmuir isotherm model. Kinetic analysis revealed a pseudo-second-order mechanism, highlighting chemisorption as the predominant process. Thermodynamic studies indicated an exothermic and spontaneous adsorption behavior. With its easy synthesis, cost-effectiveness, rapid kinetics, high adsorption capacity, and superior efficiency, SO<small><sub>3</sub></small>-PSWO emerges as a promising material for the remediation of Pb<small><sup>2+</sup></small> contamination in water treatment applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 18","pages":" 14158-14169"},"PeriodicalIF":3.9000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01017a?page=search","citationCount":"0","resultStr":"{\"title\":\"Development of sulfonated polystyrene resin-supported tungsten oxide for Pb2+ ion sequestration†\",\"authors\":\"Kashmala Khaliq, Mohsin Ali Raza Anjum, Shabnam Shahida, Ramzan Akhtar, Adil Khan, Munib Ahmad Shafiq, Iqra Rafiq, Muhammad Rehan, Rashid Nazir Qureshi, Sajid Iqbal, Jong-Il Yun and Muhammad Saifullah\",\"doi\":\"10.1039/D5RA01017A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >A sulfonated polystyrene resin-supported tungsten oxide (SO<small><sub>3</sub></small>-PSWO) was synthesized and evaluated for its efficiency in removing lead (Pb<small><sup>2+</sup></small>) from aqueous solutions. Morphology, phase purity, structural properties, thermal stability, and elemental composition of SO<small><sub>3</sub></small>-PSWO, are evaluated using SEM, XRD, FTIR, TGA, and CHNS analyzers. The ICP-OES technique was utilized for quantitative measurements of the Pb<small><sup>2+</sup></small> ions. The influence of key parameters such as pH, adsorbent dose, contact time, metal ion concentration, temperature, and interference of competing ions on Pb<small><sup>2+</sup></small> removal is systematically investigated. Under optimum conditions (pH 3.5–5.5), SO<small><sub>3</sub></small>-PSWO achieved a maximum Pb<small><sup>2+</sup></small> removal efficiency of 99.7% within one hour and demonstrated an exceptional adsorption capacity of 386 mg g<small><sup>−1</sup></small>, as described by the Langmuir isotherm model. Kinetic analysis revealed a pseudo-second-order mechanism, highlighting chemisorption as the predominant process. 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Development of sulfonated polystyrene resin-supported tungsten oxide for Pb2+ ion sequestration†
A sulfonated polystyrene resin-supported tungsten oxide (SO3-PSWO) was synthesized and evaluated for its efficiency in removing lead (Pb2+) from aqueous solutions. Morphology, phase purity, structural properties, thermal stability, and elemental composition of SO3-PSWO, are evaluated using SEM, XRD, FTIR, TGA, and CHNS analyzers. The ICP-OES technique was utilized for quantitative measurements of the Pb2+ ions. The influence of key parameters such as pH, adsorbent dose, contact time, metal ion concentration, temperature, and interference of competing ions on Pb2+ removal is systematically investigated. Under optimum conditions (pH 3.5–5.5), SO3-PSWO achieved a maximum Pb2+ removal efficiency of 99.7% within one hour and demonstrated an exceptional adsorption capacity of 386 mg g−1, as described by the Langmuir isotherm model. Kinetic analysis revealed a pseudo-second-order mechanism, highlighting chemisorption as the predominant process. Thermodynamic studies indicated an exothermic and spontaneous adsorption behavior. With its easy synthesis, cost-effectiveness, rapid kinetics, high adsorption capacity, and superior efficiency, SO3-PSWO emerges as a promising material for the remediation of Pb2+ contamination in water treatment applications.
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An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.
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