Silk fibroin/polyethylenimine functional hydrogel for metal ion adsorption and upcycling utilization

被引：65

作者：

Godiya, Chirag B. ^{[1
]}

Cheng, Xiao ^{[1
]}

Deng, Guozhe ^{[1
]}

Li, Dawei ^{[2
]}

Lu, Xiaolin ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Bioelect, Sch Biol Sci & Med Engn, Nanjing 210096, Jiangsu, Peoples R China

[2] Nanjing Univ, State Key Lab Pollut Control & Resource Reuse, Sch Environm, Nanjing 210023, Jiangsu, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2019年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Silk fibroin; Polyethyleneimine; Hydrogel; Heavy metal ions; Cascaded treatment; CATALYTIC-REDUCTION; WASTE-WATER; COMPETITIVE ADSORPTION; POLY(ETHYLENE IMINE); COMPOSITE HYDROGEL; SELECTIVE REMOVAL; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; HEAVY-METALS; LEAD IONS;

D O I：

10.1016/j.jece.2018.11.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The indiscriminate disposal of heavy metal ions poses serious threat to the environment and public health. Herein, we report a sustainable and low-cost silk fibroin (SF)/polyethyleneimine (PEI) composite hydrogel for the remediation of heavy metal ions in the aqueous solutions. The SF/PEI hydrogel demonstrated excellent adsorption capacities for the Cu(II), Pb(II), Cd(II), Zn(II), Ni(II), and Ag(I) ions, which are 163.9, 185.2, 169.5, 125.0, 140.8, and 200.0 mg g(-1), respectively. Via a stepwise adsorption, reduction and utilization procedure, the as-prepared hydrogel shows versatile functionalities depending on the pristine adsorbed metal ion(s), for example, catalytical activity and antibacterial property. Based on the functional SF/PEI hydrogel, engineering the cascaded treatment procedure will provide an effective and practical paradigm for the treatment and recycling of heavy metal ions in the wastewater.

引用

页数：11

共 72 条

[1] Removal of toxic heavy metal lead (II) using chitosan oligosaccharide-graft-maleic anhydride/polyvinyl alcohol/silk fibroin composite [J].