Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study

doi:10.1016/j.jes.2014.06.016

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	Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study
	Liu, Fenglin 1; Yang, JingHe 2; Zuo, Jiane 1; Ma, Ding 3; Gan, Lili 1; Xie, Bangmi 1; Wang, Pei 1; Yang, Bo 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2014-08-01
卷号	26 期号:8 页码:1751-1762
关键词	Nanoscale Zero Valent Iron Phosphorus Graphene Graphene-supported Nzvi
ISSN号	1001-0742
DOI	10.1016/j.jes.2014.06.016
英文摘要	Excess phosphorus from non-point pollution sources is one of the key factors causing eutrophication in many lakes in China, so finding a cost-effective method to remove phosphorus from non-point pollution sources is very important for the health of the aqueous environment. Graphene was selected to support nanoscale zero-valent iron (nZVI) for phosphorus removal from synthetic rainwater runoff in this article. Compared with nZVI supported on other porous materials, graphene-supported nZVI (G-nZVI) could remove phosphorus more efficiently. The amount of nZVI in G-nZVI was an important factor in the removal of phosphorus by G-nZVI, and G-nZVI with 20 wt.% nZVI (20% G-nZVI) could remove phosphorus most efficiently. The nZVI was very stable and could disperse very well on graphene, as characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS), Fourier Transform infrared spectroscopy (FT-IR) and Raman spectroscopy were used to elucidate the reaction process, and the results indicated that Fe-O-P was formed after phosphorus was adsorbed by G-nZVI. The results obtained from X-ray diffraction (XRD) indicated that the reaction product between nZVI supported on graphene and phosphorus was Fe-3(PO4)(2)center dot 8H(2)O (Vivianite). It was confirmed that the specific reaction mechanism for the removal of phosphorus with nZVI or G-nZVI was mainly due to chemical reaction between nZVI and phosphorus. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000340738000022
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52573]
专题	中国科学院化学研究所
通讯作者	Zuo, Jiane
作者单位	1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 2.Dalian Univ Technol, Fac Chem Environm & Biol Sci & Technol, Dalian 116086, Peoples R China 3.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fenglin,Yang, JingHe,Zuo, Jiane,et al. Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(8):1751-1762.
APA	Liu, Fenglin.,Yang, JingHe.,Zuo, Jiane.,Ma, Ding.,Gan, Lili.,...&Yang, Bo.(2014).Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(8),1751-1762.
MLA	Liu, Fenglin,et al."Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.8(2014):1751-1762.