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

doi:10.1016/j.jes.2014.06.016

CORC > 北京大学 > 化学与分子工程学院

	Graphene-supported nanoscale zero-valent iron: Removal of phosphorus from aqueous solution and mechanistic study
	Liu, Fenglin ; Yang, JingHe ; Zuo, Jiane ; Ma, Ding ; Gan, Lili ; Xie, Bangmi ; Wang, Pei ; Yang, Bo
刊名	journal of environmental sciences china
	2014
关键词	Nanoscale zero valent iron Phosphorus Graphene Graphene-supported nZVI EUTROPHICATION NANOPARTICLES ADSORPTION DEGRADATION REACTIVITY PARTICLES SEDIMENTS NITRATE OXIDE TCE
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.; Environmental Sciences; SCI(E); EI; PubMed; 中国科技核心期刊(ISTIC); 0; ARTICLE; lfl06@mails.tsinghua.edu.cn; jiane.zuo@mail.tsinghua.edu.cn; 8; 1751-1762; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/188818]
专题	化学与分子工程学院
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.
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.
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 (2014).