pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption

doi:10.1016/j.envpol.2015.10.052

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption
	Xu, HC; Li, L; Lv, H; Liu, X; Jiang, HL; Xu, HC (reprint author), Chinese Acad Sci, Nanjing Inst Geog & Limnol, 73 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China.
	2016
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
卷号	208 期号:-页码:723—731
文章类型	期刊文献
摘要	Phosphatization of ZnO nanoparticles (ZNPs) at various pHs and its influence on subsequent lead sorption were investigated. Results showed that, in presence of phosphate, both the chemical speciation and crystalline phase of ZNPs were pH dependent that most of them were converted to crystalline Zn-3(PO4)(2) at acidic pHs, but only little amorphous hopeites can be formed under alkaline condition. Phosphatization process significantly enhanced subsequent lead sorption with the order of acidic process > alkaline > pristine ZNPs. Spectroscopic analysis including ATR-FTIR and XPS revealed main mechanisms of lead phosphate precipitation and inner-sphere complexes for lead sorption on acidic and alkaline treatment products, respectively. The potential toxicity of ZNPs and heavy metals in eutrophic aquatic ecosystems would thus be reduced due to the ubiquitous phosphatization process. This study highlights the importance of environmental variables in exploring the environmental behavior and fate of heavy metals as well as nanoparticles in natural waters. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Heavy-metal Ions Aqueous-solution Carbon Nanotubes Thin-films Adsorption Removal Glasses Xps Aggregation Dissolution
DOI	10.1016/j.envpol.2015.10.052
收录类别	SCI
语种	英语
WOS记录号	WOS:000368306500049
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/25800
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Xu, HC (reprint author), Chinese Acad Sci, Nanjing Inst Geog & Limnol, 73 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China.
推荐引用方式 GB/T 7714	Xu, HC,Li, L,Lv, H,et al. pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption[J]. ENVIRONMENTAL POLLUTION,2016,208(-):723—731.
APA	Xu, HC,Li, L,Lv, H,Liu, X,Jiang, HL,&Xu, HC .(2016).pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption.ENVIRONMENTAL POLLUTION,208(-),723—731.
MLA	Xu, HC,et al."pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption".ENVIRONMENTAL POLLUTION 208.-(2016):723—731.

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