Miao Wang, Kelin Liu, Tianyu Xiong, Yanfeng Tang and Tongming Sun
{"title":"层次化CeVO4中空微球可实现高效Pb2+吸附剂†","authors":"Miao Wang, Kelin Liu, Tianyu Xiong, Yanfeng Tang and Tongming Sun","doi":"10.1039/D5CE00283D","DOIUrl":null,"url":null,"abstract":"<p >Developing high-efficiency adsorbents through a simple, eco-friendly and green synthetic strategy remains an ongoing challenge. Herein, hierarchical nanoflake-assembled hollow microspheres of CeVO<small><sub>4</sub></small> (NFHM-CeVO<small><sub>4</sub></small>) were prepared <em>via</em> a facile hydrothermal method. The as-prepared hierarchical CeVO<small><sub>4</sub></small> hollow microspheres possess high specific surface areas (104.68 m<small><sup>2</sup></small> g<small><sup>−1</sup></small>), and were evaluated for the adsorption of Pb<small><sup>2+</sup></small> in aqueous solutions. The adsorption performance of NFHM-CeVO<small><sub>4</sub></small> for Pb<small><sup>2+</sup></small> aqueous solutions was thoroughly investigated, including the adsorption kinetics, thermodynamics, and influencing factors. The adsorption kinetics data and experimental adsorption data were described by the pseudo-second-order kinetics model and Langmuir adsorption isotherm, with a maximum adsorption capacity of 487.65 mg g<small><sup>−1</sup></small>. Temperature-dependent adsorption results indicated that the adsorption process was thermodynamically favorable and spontaneous. The Pb<small><sup>2+</sup></small> adsorption is mainly driven by electrostatic attraction and formation of chemical bonds. With a higher adsorption efficiency than many other materials, NFHM-CeVO<small><sub>4</sub></small> could be a promising adsorbent for the Pb<small><sup>2+</sup></small> removal from wastewater. This work broadens the application field of CeVO<small><sub>4</sub></small> materials and offers a novel approach to develop high-efficiency adsorbents for the removal of Pb<small><sup>2+</sup></small> contaminants.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 20","pages":" 3386-3391"},"PeriodicalIF":2.6000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hierarchical CeVO4 hollow microspheres to enable high-efficiency Pb2+ adsorbents†\",\"authors\":\"Miao Wang, Kelin Liu, Tianyu Xiong, Yanfeng Tang and Tongming Sun\",\"doi\":\"10.1039/D5CE00283D\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Developing high-efficiency adsorbents through a simple, eco-friendly and green synthetic strategy remains an ongoing challenge. Herein, hierarchical nanoflake-assembled hollow microspheres of CeVO<small><sub>4</sub></small> (NFHM-CeVO<small><sub>4</sub></small>) were prepared <em>via</em> a facile hydrothermal method. The as-prepared hierarchical CeVO<small><sub>4</sub></small> hollow microspheres possess high specific surface areas (104.68 m<small><sup>2</sup></small> g<small><sup>−1</sup></small>), and were evaluated for the adsorption of Pb<small><sup>2+</sup></small> in aqueous solutions. The adsorption performance of NFHM-CeVO<small><sub>4</sub></small> for Pb<small><sup>2+</sup></small> aqueous solutions was thoroughly investigated, including the adsorption kinetics, thermodynamics, and influencing factors. The adsorption kinetics data and experimental adsorption data were described by the pseudo-second-order kinetics model and Langmuir adsorption isotherm, with a maximum adsorption capacity of 487.65 mg g<small><sup>−1</sup></small>. Temperature-dependent adsorption results indicated that the adsorption process was thermodynamically favorable and spontaneous. The Pb<small><sup>2+</sup></small> adsorption is mainly driven by electrostatic attraction and formation of chemical bonds. With a higher adsorption efficiency than many other materials, NFHM-CeVO<small><sub>4</sub></small> could be a promising adsorbent for the Pb<small><sup>2+</sup></small> removal from wastewater. This work broadens the application field of CeVO<small><sub>4</sub></small> materials and offers a novel approach to develop high-efficiency adsorbents for the removal of Pb<small><sup>2+</sup></small> contaminants.</p>\",\"PeriodicalId\":70,\"journal\":{\"name\":\"CrystEngComm\",\"volume\":\" 20\",\"pages\":\" 3386-3391\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-04-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CrystEngComm\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ce/d5ce00283d\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CrystEngComm","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ce/d5ce00283d","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Hierarchical CeVO4 hollow microspheres to enable high-efficiency Pb2+ adsorbents†
Developing high-efficiency adsorbents through a simple, eco-friendly and green synthetic strategy remains an ongoing challenge. Herein, hierarchical nanoflake-assembled hollow microspheres of CeVO4 (NFHM-CeVO4) were prepared via a facile hydrothermal method. The as-prepared hierarchical CeVO4 hollow microspheres possess high specific surface areas (104.68 m2 g−1), and were evaluated for the adsorption of Pb2+ in aqueous solutions. The adsorption performance of NFHM-CeVO4 for Pb2+ aqueous solutions was thoroughly investigated, including the adsorption kinetics, thermodynamics, and influencing factors. The adsorption kinetics data and experimental adsorption data were described by the pseudo-second-order kinetics model and Langmuir adsorption isotherm, with a maximum adsorption capacity of 487.65 mg g−1. Temperature-dependent adsorption results indicated that the adsorption process was thermodynamically favorable and spontaneous. The Pb2+ adsorption is mainly driven by electrostatic attraction and formation of chemical bonds. With a higher adsorption efficiency than many other materials, NFHM-CeVO4 could be a promising adsorbent for the Pb2+ removal from wastewater. This work broadens the application field of CeVO4 materials and offers a novel approach to develop high-efficiency adsorbents for the removal of Pb2+ contaminants.
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