A. Tshikovhi, Shivani B. Mishra, Ajay K. Mishra, Tshwafo E. Motaung
{"title":"生物聚合物共混纳米复合材料中二氧化硅含量对碱性水溶液中汞高效吸附的影响","authors":"A. Tshikovhi, Shivani B. Mishra, Ajay K. Mishra, Tshwafo E. Motaung","doi":"10.1007/s12221-025-00854-y","DOIUrl":null,"url":null,"abstract":"<div><p>The current work describes the development of silica chitosan-guar gum blended nanocomposites (NCs) for the proficient removal of mercury (Hg<sup>2+</sup>) ions in aqueous solution at pH 12. The silica NCs were prepared by dispersing the as-synthesized silica nanoparticles (NPs) into the chitosan-guar gum (CS-GG) polymer blend matrix. The developed silica NCs were characterized by FTIR, SEM–EDS, XRD, TGA, and BET. The results confirmed the dispersion of silica NPs on the surface of the CS: GG blend resulting in silica NCs with improved thermal stability, and an enhanced specific pore surface area from 11.843 m<sup>2</sup>/g to 23.029 m<sup>2</sup>/g. The 2 and 5% silica NCs were used as an efficient adsorbent for the removal of mercury ions. The 2 and 5% of silica NCs showed a maximum removal efficiency of 88% and 79% for mercury ions, respectively. The adsorption process is best fitted with the Langmuir adsorption isotherm and pseudo-second-order kinetic model. The adsorbent proved to be economical with 72% of removal efficiency after five cycles using EDTA as a desorbing solution.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 2","pages":"521 - 535"},"PeriodicalIF":2.2000,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12221-025-00854-y.pdf","citationCount":"0","resultStr":"{\"title\":\"Effect of Silica Content in a Bio-Polymeric Blended Nanocomposite for Efficient Adsorption of Mercury in Basic Aqueous Solution\",\"authors\":\"A. Tshikovhi, Shivani B. Mishra, Ajay K. Mishra, Tshwafo E. Motaung\",\"doi\":\"10.1007/s12221-025-00854-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The current work describes the development of silica chitosan-guar gum blended nanocomposites (NCs) for the proficient removal of mercury (Hg<sup>2+</sup>) ions in aqueous solution at pH 12. The silica NCs were prepared by dispersing the as-synthesized silica nanoparticles (NPs) into the chitosan-guar gum (CS-GG) polymer blend matrix. The developed silica NCs were characterized by FTIR, SEM–EDS, XRD, TGA, and BET. The results confirmed the dispersion of silica NPs on the surface of the CS: GG blend resulting in silica NCs with improved thermal stability, and an enhanced specific pore surface area from 11.843 m<sup>2</sup>/g to 23.029 m<sup>2</sup>/g. The 2 and 5% silica NCs were used as an efficient adsorbent for the removal of mercury ions. The 2 and 5% of silica NCs showed a maximum removal efficiency of 88% and 79% for mercury ions, respectively. The adsorption process is best fitted with the Langmuir adsorption isotherm and pseudo-second-order kinetic model. The adsorbent proved to be economical with 72% of removal efficiency after five cycles using EDTA as a desorbing solution.</p></div>\",\"PeriodicalId\":557,\"journal\":{\"name\":\"Fibers and Polymers\",\"volume\":\"26 2\",\"pages\":\"521 - 535\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2025-01-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s12221-025-00854-y.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fibers and Polymers\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12221-025-00854-y\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, TEXTILES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fibers and Polymers","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12221-025-00854-y","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, TEXTILES","Score":null,"Total":0}
Effect of Silica Content in a Bio-Polymeric Blended Nanocomposite for Efficient Adsorption of Mercury in Basic Aqueous Solution
The current work describes the development of silica chitosan-guar gum blended nanocomposites (NCs) for the proficient removal of mercury (Hg2+) ions in aqueous solution at pH 12. The silica NCs were prepared by dispersing the as-synthesized silica nanoparticles (NPs) into the chitosan-guar gum (CS-GG) polymer blend matrix. The developed silica NCs were characterized by FTIR, SEM–EDS, XRD, TGA, and BET. The results confirmed the dispersion of silica NPs on the surface of the CS: GG blend resulting in silica NCs with improved thermal stability, and an enhanced specific pore surface area from 11.843 m2/g to 23.029 m2/g. The 2 and 5% silica NCs were used as an efficient adsorbent for the removal of mercury ions. The 2 and 5% of silica NCs showed a maximum removal efficiency of 88% and 79% for mercury ions, respectively. The adsorption process is best fitted with the Langmuir adsorption isotherm and pseudo-second-order kinetic model. The adsorbent proved to be economical with 72% of removal efficiency after five cycles using EDTA as a desorbing solution.
期刊介绍：
-Chemistry of Fiber Materials, Polymer Reactions and Synthesis-
Physical Properties of Fibers, Polymer Blends and Composites-
Fiber Spinning and Textile Processing, Polymer Physics, Morphology-
Colorants and Dyeing, Polymer Analysis and Characterization-
Chemical Aftertreatment of Textiles, Polymer Processing and Rheology-
Textile and Apparel Science, Functional Polymers
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