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题名:
pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption
作者: Xu, HC; Li, L; Lv, H; Liu, X; Jiang, HL
刊名: ENVIRONMENTAL POLLUTION
出版日期: 2016
卷号: 208, 期号:-, 页码:723—731
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
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.
文章类型: 期刊文献
英文摘要: 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000368306500049
ISSN号: 0269-7491
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25800
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Xu, HC,Li, L,Lv, H,et al. pH-dependent phosphatization of ZnO nanoparticles and its influence on subsequent lead sorption[J]. ENVIRONMENTAL POLLUTION,2016-01-01,208(-):723—731.
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