{"title":"Removal of pentavalent vanadium from water by Fe-Ni loaded multi-walled carbon nanotubes.","authors":"Feiyang Sun, Huai Li, Zifang Chi, Wenhua Hu","doi":"10.1016/j.jenvman.2026.129608","DOIUrl":null,"url":null,"abstract":"<p><p>Vanadium contamination can be effectively removed by nanozero-valent iron (nZVI), but nZVI suffers from easy passivation, low electron transfer efficiency, and poor dispersion, which limits its application in water. To improve the performance of nZVI, multi-walled carbon nanotube (MWCNT)-loaded Fe/Ni bimetallic nanomaterials (Fe-Ni/MWCNT) were developed in this study for rapid removal of pentavalent vanadium (V(V)) from water. The results showed that MWCNT could provide skeleton support for the bimetallic particles and overcome the problem of easy agglomeration of bimetallic. The removal of V(V) was above 80% at pH ranging from 3.77 to 10.5. The maximum adsorption of Fe-Ni/MWCNT on V(V) was 1045.09 mg/g. Furthermore, the reaction process of Fe-Ni/MWCNT with V(V) includes adsorption, reduction and co-precipitation. This study offers a highly efficient Fe-based composite for the removal of V(V).</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"404 ","pages":"129608"},"PeriodicalIF":8.4000,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Environmental Management","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.jenvman.2026.129608","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/4/8 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Vanadium contamination can be effectively removed by nanozero-valent iron (nZVI), but nZVI suffers from easy passivation, low electron transfer efficiency, and poor dispersion, which limits its application in water. To improve the performance of nZVI, multi-walled carbon nanotube (MWCNT)-loaded Fe/Ni bimetallic nanomaterials (Fe-Ni/MWCNT) were developed in this study for rapid removal of pentavalent vanadium (V(V)) from water. The results showed that MWCNT could provide skeleton support for the bimetallic particles and overcome the problem of easy agglomeration of bimetallic. The removal of V(V) was above 80% at pH ranging from 3.77 to 10.5. The maximum adsorption of Fe-Ni/MWCNT on V(V) was 1045.09 mg/g. Furthermore, the reaction process of Fe-Ni/MWCNT with V(V) includes adsorption, reduction and co-precipitation. This study offers a highly efficient Fe-based composite for the removal of V(V).
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The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.
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