Carbon sphere@layered double hydroxides filled cellulose nanofibers aerogel for Cr(VI) adsorption from aqueous solution

被引：0
|
作者：
Liang, Qianyong [1 ]
Pan, Ying [1 ]
Du, Jia [1 ]
Zhang, Dong [1 ]
Zhang, Yan [2 ,3 ,4 ]
Zhong, Zhishun [5 ]
Zhao, Hongting [1 ,6 ]
机构：
[1] Hangzhou Dianzi Univ, Inst Environm Mat & Applicat, Coll Mat & Environm Engn, Hangzhou, Peoples R China
[2] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Hangzhou, Peoples R China
[3] Zhejiang Sci Tech Univ, Engn Res Ctr Ecodyeing & Finishing Text, Hangzhou, Peoples R China
[4] Key Lab Green Cleaning Technol & Detergent Zhejian, Lishui, Peoples R China
[5] Guangdong Jiandi Agr Technol Co Ltd, Foshan, Guangdong, Peoples R China
[6] Hangzhou Dianzi Univ, Inst Environm Mat & Applicat, Coll Mat & Environm Engn, Hangzhou 310018, Peoples R China
来源：
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS | 2024年 / 63卷 / 04期
关键词：
Aerogel; carbon sphere; cellulose nanofiber; heavy metal; MgAl-LDH; HEXAVALENT CHROMIUM; REMOVAL; IONS; COMPOSITE; CU(II); BEADS;
D O I：
10.1080/25740881.2023.2289179
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Carbon sphere@layered double hydroxides filled cellulose nanofibers (ACS@LDHs/CNF) aerogel was successfully synthesized. The removal rate of Cr(VI) using ACS@LDHs/CNFs aerogel at a solid-liquid ratio of 1 g/L was 89.4%, which was higher compared to the removal rate of 65.2% using LDHs alone. The adsorption capacity of ACS@LDHs/CNFs for Cr(VI) was determined to be 44.9 mg/g. The adsorption kinetics followed the pseudo-second-order kinetic equation, and the isotherm data showed good agreement with the Langmuir model. The adsorption mechanism of Cr(VI) onto ACS@LDHs/CNFs aerogel was also investigated. Additionally, the ACS@LDHs/CNFs aerogel demonstrated consistent high adsorption efficiency over 4 consecutive cycles of adsorption-regeneration.
引用
收藏
页码：419 / 431
页数：13
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