半胱氨酸功能化纳米二氧化硅枝状纤维的合成及其作为高级吸附剂的应用

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
Nilufar Khantan, N. Shadjou, M. Hasanzadeh
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引用次数: 16

摘要

摘要采用水热法合成了胺基接枝的l-半胱氨酸修饰的树枝状纳米二氧化硅(Cys-DFNS-NH2)。对Cys-DFNS-NH2的N2吸附-解吸等温线分析表明,制备的纤维Cys-DFNS-NH2的平均孔体积和比表面积分别为2.2 cm3/g和205 m2/g,平均孔径为6.06 nm。采用电化学方法研究了Cys-DFNS-NH2对Cd2+、Cu2+、Ag+和Pb2+的吸附行为。结果表明,Cys-DFNS-NH2能在不同电位下选择性吸附Cd2+、Ag+和Pb2+。最后,考察了该工程吸附剂对污染水样中Cd2+、Ag+和Pb2+的去除效果。本研究为合成具有高比表面积、高效吸附特定金属离子的Cys-DFNS-NH2提供了新的平台。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesize of dendritic fibrous nano-silica functionalized by cysteine and its application as advanced adsorbent
Abstract l-Cysteine-modified dendritic fibrous nanosilica grafted by amine groups (Cys-DFNS-NH2) have been synthesized by a novel hydrothermal method. The N2 adsorption–desorption isotherms analysis on the Cys-DFNS-NH2 show that the average pore volume and surface area of the prepared fibrous Cys-DFNS-NH2 were 2.2 cm3/g and 205 m2/g, respectively, while the average pore size is 6.06 nm. Adsorption behavior of the Cys-DFNS-NH2 for Cd2+, Cu2+, Ag+, and Pb2+ was investigated by electrochemical methods. The results show that Cys-DFNS-NH2 can selectively adsorb Cd2+, Ag+, and Pb2+ in different potentials. Finally, the application of the engineered adsorbent for the removal of Cd2+, Ag+, and Pb2+ from contaminated water samples was examined. This work provides a new platform to the synthesis of Cys-DFNS-NH2 with high specific surface area for efficient adsorbent of specific metal ions. Graphical Abstract
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来源期刊
Nanocomposites
Nanocomposites Multiple-
CiteScore
7.40
自引率
15.20%
发文量
18
审稿时长
16 weeks
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