Recovery of Ag(I) from aqueous solution by hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane for catalytic reduction of toxic P-nitrophenol

doi:10.1016/j.diamond.2022.109161

	Recovery of Ag(I) from aqueous solution by hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane for catalytic reduction of toxic P-nitrophenol
	Ma, Ying-Xia; Yang, Hai-Jun; Shi, Xiao-Feng; Li, Xiao-Hua; Meng, Wen-Li
刊名	Diamond and Related Materials
	2022-08-01
卷号	127
关键词	Adsorption Amines Catalyst activity Chemicals removal (water treatment) Fibers Grafting (chemical) Metal nanoparticles Metal recovery Metals Nanocomposites Phenols Silver compounds Wastewater reclamation Wastewater treatment 4-Nitrophenol Adsorption capacities Ag(I) Catalytic reduction Electrospun nanocomposite fiber membrane Electrospuns Fiber membranes Hyperbranched polyethyleneimine Nanocomposite fibers Nitrophenols
ISSN号	0925-9635
DOI	10.1016/j.diamond.2022.109161
英文摘要	A novel hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide (HPEI-PAN/GO) electrospun nanocomposite fiber membrane was successfully fabricated by electrospinning technology and chemical grafting reaction. The HPEI-PAN/GO electrospun nanocomposite fiber membrane was used for recovery of Ag(I) from aqueous solution. The obtained electrospun nanocomposite fiber membrane fabricated by GO and PAN through self-fusion could avoid the shedding of GO and increase the dispersion of GO in PAN. HPEI containing plenty of primary and secondary amine groups, grafted the PAN/GO electrospun nanocomposite fiber membrane can increase the adsorption capacity for Ag(I) and reduce Ag(I) into element silver during the adsorption process. The maximum adsorption capacity of the HPEI-PAN/GO electrospun nanocomposite fiber membrane was 167.40 mg·g−1 and the removal ratio remained above 90 % after five regeneration cycles. The HPEI-PAN/GO electrospun nanocomposite fiber membrane adsorbed Ag(I) (HPEI-PAN/GO-Ag) was utilized as catalyst for the reduction of toxic p-nitrophenol (4-NP) to 4-aminophenol (4-AP). The HEPI-PAN/GO-Ag could remain the catalytic conversion over 90 % for 4-NP after 10 catalytic cycles, manifesting that the HPEI-PAN/GO-Ag had significant catalytic activity and outstanding stability. This work provides a novel strategy for recovery and reuse of precious metal ions from wastewater. © 2022 Elsevier B.V.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000811805300004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158445]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science & Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Ma, Ying-Xia,Yang, Hai-Jun,Shi, Xiao-Feng,et al. Recovery of Ag(I) from aqueous solution by hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane for catalytic reduction of toxic P-nitrophenol[J]. Diamond and Related Materials,2022,127.
APA	Ma, Ying-Xia,Yang, Hai-Jun,Shi, Xiao-Feng,Li, Xiao-Hua,&Meng, Wen-Li.(2022).Recovery of Ag(I) from aqueous solution by hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane for catalytic reduction of toxic P-nitrophenol.Diamond and Related Materials,127.
MLA	Ma, Ying-Xia,et al."Recovery of Ag(I) from aqueous solution by hyperbranched polyethyleneimine grafted polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane for catalytic reduction of toxic P-nitrophenol".Diamond and Related Materials 127(2022).