Xiaoying Li , Zhaoji Shi , Jiaen Zhang , Tian Gan , Zeheng Xiao
{"title":"Mg/ al层状双氢氧化物修饰的入侵性植物源生物炭的水中Cr (VI)去除性能","authors":"Xiaoying Li , Zhaoji Shi , Jiaen Zhang , Tian Gan , Zeheng Xiao","doi":"10.1016/j.colcom.2023.100700","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, Mg<img>Al layered double hydroxides (Mg-Al/LDH)-decorated invasive plant (<em>Praxelis clematidea</em>)-derived biochar (MgAl/LDH-PBC) were prepared by the co-precipitation method. The characterization results revealed that the modified biochar surface offered more active adsorption sites, facilitating the Cr (VI) adsorption. MgAl/LDH-PBC showed an excellent adsorption capacity of 177.88 mg/g in a monolayer, with a rapid uptake equilibrium within 180 min. In addition, even after five cycles, the desorption rates remained at about 85%, and the Cr (VI) adsorption was quite stable despite the presence of a number of other ions. Moreover, MgAl/LDH-PBC bonded efficiently with Cr (VI) via electrostatic interaction, oxidation-reduction reaction, ion-exchange reaction, complexation, and co-precipitation. Based on these findings, MgAl/LDH-PBC may be used as an adsorbent for the removal of Cr (VI) from sewage and the management of invasive plant species.</p></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Aqueous Cr (VI) removal performance of an invasive plant-derived biochar modified by Mg/Al-layered double hydroxides\",\"authors\":\"Xiaoying Li , Zhaoji Shi , Jiaen Zhang , Tian Gan , Zeheng Xiao\",\"doi\":\"10.1016/j.colcom.2023.100700\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, Mg<img>Al layered double hydroxides (Mg-Al/LDH)-decorated invasive plant (<em>Praxelis clematidea</em>)-derived biochar (MgAl/LDH-PBC) were prepared by the co-precipitation method. The characterization results revealed that the modified biochar surface offered more active adsorption sites, facilitating the Cr (VI) adsorption. MgAl/LDH-PBC showed an excellent adsorption capacity of 177.88 mg/g in a monolayer, with a rapid uptake equilibrium within 180 min. In addition, even after five cycles, the desorption rates remained at about 85%, and the Cr (VI) adsorption was quite stable despite the presence of a number of other ions. Moreover, MgAl/LDH-PBC bonded efficiently with Cr (VI) via electrostatic interaction, oxidation-reduction reaction, ion-exchange reaction, complexation, and co-precipitation. Based on these findings, MgAl/LDH-PBC may be used as an adsorbent for the removal of Cr (VI) from sewage and the management of invasive plant species.</p></div>\",\"PeriodicalId\":10483,\"journal\":{\"name\":\"Colloid and Interface Science Communications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2023-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloid and Interface Science Communications\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2215038223000079\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloid and Interface Science Communications","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2215038223000079","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Aqueous Cr (VI) removal performance of an invasive plant-derived biochar modified by Mg/Al-layered double hydroxides
In this study, MgAl layered double hydroxides (Mg-Al/LDH)-decorated invasive plant (Praxelis clematidea)-derived biochar (MgAl/LDH-PBC) were prepared by the co-precipitation method. The characterization results revealed that the modified biochar surface offered more active adsorption sites, facilitating the Cr (VI) adsorption. MgAl/LDH-PBC showed an excellent adsorption capacity of 177.88 mg/g in a monolayer, with a rapid uptake equilibrium within 180 min. In addition, even after five cycles, the desorption rates remained at about 85%, and the Cr (VI) adsorption was quite stable despite the presence of a number of other ions. Moreover, MgAl/LDH-PBC bonded efficiently with Cr (VI) via electrostatic interaction, oxidation-reduction reaction, ion-exchange reaction, complexation, and co-precipitation. Based on these findings, MgAl/LDH-PBC may be used as an adsorbent for the removal of Cr (VI) from sewage and the management of invasive plant species.
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Colloid and Interface Science Communications provides a forum for the highest visibility and rapid publication of short initial reports on new fundamental concepts, research findings, and topical applications at the forefront of the increasingly interdisciplinary area of colloid and interface science.
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