Chemical transformation of zinc oxide nanoparticles as a result of interaction with hydroxyapatite

	Chemical transformation of zinc oxide nanoparticles as a result of interaction with hydroxyapatite
	Lv, JT; Zhang, SZ; Wang, SS; Luo, L; Huang, HL; Zhang, J;张静
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2014
卷号	461 页码:126-132
关键词	ZnO nanoparticle Chemical transformation Hydroxyapatite XAFS
英文摘要	Recent studies have revealed that zinc phosphate is an important transformation product of zinc oxide nanoparticles (ZnO NPs) in the environment, and the role of soluble phosphate in the transformation of ZnO NPs to zinc phosphate has been confirmed. However, whether insoluble phosphate that exists widely in the environment can induce chemical transformation of ZnO NPs has not been addressed. Therefore, transformation of ZnO NPs in the presence of hydroxyapatite (HAP), selected as representative of insoluble phosphate, at different pH was investigated in the present study. Transformation products were identified by employing X-ray diffraction and synchrotron based X-ray absorption fine structure spectroscopy. The results indicate that under acidic condition (pH 5) phosphate ion (PO43-) and calcium anion (Ca2+) were released from HAP in aqueous solution, inducing a rapid transformation of about 80% ZnO NPs to scholzite within 4 h. Under neutral or basic conditions (pH 7 and 9) the adsorption of Zn2+ on HAP resulted in a slow transformation of about 60% ZnO NPs to amorphous inner-sphere Zn adsorption complexes within 30 days. This work suggests the important role of HAP in the transformation of ZnO NPs and may affect the behavior, fate and toxic effects of ZnO NPs in the environment. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Chemistry
收录类别	SCI
WOS记录号	WOS:000343351400017
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224974]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Lv, JT,Zhang, SZ,Wang, SS,et al. Chemical transformation of zinc oxide nanoparticles as a result of interaction with hydroxyapatite[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2014,461:126-132.
APA	Lv, JT,Zhang, SZ,Wang, SS,Luo, L,Huang, HL,&Zhang, J；张静.(2014).Chemical transformation of zinc oxide nanoparticles as a result of interaction with hydroxyapatite.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,461,126-132.
MLA	Lv, JT,et al."Chemical transformation of zinc oxide nanoparticles as a result of interaction with hydroxyapatite".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 461(2014):126-132.