Graphene oxide-based two-dimensional molecular brush for efficient removal of lead and copper ions from water media

被引：3

作者：

Dong, Yanjie ^{[1
]}

Sang, Dashen ^{[1
]}

He, Chengdong ^{[1
]}

Sheng, Xinfeng ^{[1
]}

Lei, Longwen ^{[1
]}

机构：

[1] Anqing Normal Univ, Coll Chem & Chem Engn, Anhui Prov Lab Optoelect & Magnetism Funct Mat, Anqing 246011, Peoples R China

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2020年 / 67卷 / 07期

基金：

中国国家自然科学基金;

关键词：

adsorption; copper ion; graphene oxide; lead ion; molecular brush; HEAVY-METAL IONS; DEGRADATION; ALGINATE; IRON; RED;

D O I：

10.1002/jccs.201900368

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, graphene oxide (GO)-based two-dimensional molecular brush was fabricated by grafting polyacrylamide onto GO nanosheets for efficient removal of Pb2+ and Cu2+ from water media. Owing to the rich oxygen and nitrogen functional groups in the composites, the synthetic GO two-dimensional molecular brush can get the maximum adsorption capacity of 268.4 mg/g for Pb2+ and 127.2 mg/g for Cu2+, respectively. Moreover, the interspaces between the stacked two-dimensional molecular brushes provide fast pathways for the diffusion of heavy metal ions. As a result, GO-based two-dimensional molecular brush can reach the adsorption equilibrium within 60 min. These results indicated that the synthetic GO-based two-dimensional molecular brush is a promising adsorbent to separate heavy metal ions from water media.

引用

收藏

页码：1183 / 1188

页数：6

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