Aerogels from quaternary ammonium-functionalized cellulose nanofibers for rapid removal of Cr(VI) from water

被引：83

作者：

He, Xu ^{[1
]}

Cheng, Long ^{[1
]}

Wang, Yaru ^{[1
]}

Zhao, Jiangqi ^{[1
]}

Zhang, Wei ^{[1
]}

Lu, Canhui ^{[1
]}

机构：

[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2014年 / 111卷

基金：

中国国家自然科学基金;

关键词：

Adsorption; Aerogel; Cellulose nanofibers; Heavy metal pollution; Water treatment; MULTIWALLED CARBON NANOTUBES; AQUEOUS-SOLUTION; HEAVY-METALS; ADSORPTION; CHROMIUM; EXTRACTION; VI;

D O I：

10.1016/j.carbpol.2014.05.020

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

An efficient heavy metal adsorbent from quaternary ammonium-functionalized cellulose nanofiber aerogels was successfully developed. The highly porous aerogel could well retain its large specific surface area, which allowed rapid and effective removal of Cr(VI) from contaminated water. The aerogel adsorbent became mechanically robust after chemical crosslinking. It could be easily separated from water after adsorption without complicated centrifugation or filtration process. With only 1 g of aerogel, more than 99% of Cr(VI) in 1 L of 1 mg/L solution could be removed in 50 min. Besides, the aerogel also exhibited excellent reusability. (C) 2014 Elsevier Ltd. All rights reserved.

引用

收藏

页码：683 / 687

页数：5

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