化学吸附
阳离子聚合
吸附
材料科学
吸收(声学)
氢氟酸
化学工程
MXenes公司
无机化学
纳米技术
化学
有机化学
复合材料
高分子化学
冶金
工程类
作者
Yafei Yan,Hui Han,Yajie Dai,Hua Zhu,Wenhui Liu,Xi Tang,Wei Gan,Hui Li
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-10-17
卷期号:4 (11): 11763-11769
被引量:48
标识
DOI:10.1021/acsanm.1c02339
摘要
Two-dimensional (2D) transition metal carbides (MXenes) have attracted substantial research interests due to their efficient absorption capability for pollutants in waste water. Nb2CTx MXene with a high specific surface area of about 44.69 m2·g–1 was successfully synthesized by etching Nb2AlC with hydrofluoric acid. The as-synthesized Nb2CTx MXene exhibits excellent absorption capability for both cationic dye and anionic dye, with the maximum adsorption capacity beyond 500 mg·g–1. In addition, the adsorption process of Nb2CTx MXene follows a pesuo-second-order kinetics model, and the rate-limiting step of the adsorption process is the chemisorption at the surface absorption active sites. Our findings show that Nb2CTx MXene is a promising candidate for a high efficiency adsorbent for dye removal from waste water and also sheds light on the further engineering of superior absorbents based on the MXene systems.
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