Tags

Type your tag names separated by a space and hit enter

Dissolution and microstructural transformation of ZnO nanoparticles under the influence of phosphate.
Environ Sci Technol. 2012 Jul 03; 46(13):7215-21.ES

Abstract

The toxicity and fate of nanoparticles (NPs) have been reported to be highly dependent on the chemistry of the medium, and the effects of phosphate have tended to be ignored despite the wide existence of phosphate contamination in aqueous environments. In the present study the influence of phosphate on the dissolution and microstructural transformation of ZnO NPs was investigated. Phosphate at a low concentration rapidly and substantially reduced the release of Zn(2+) into aqueous solution. Synchrotron X-ray absorption spectroscopy and X-ray diffraction analysis reveal that interaction between ZnO NPs and phosphate induced the transformation of ZnO into zinc phosphate. Transmission electronic microscopy observation shows that the morphology of the particles changed from structurally uniform nanosized spherical to anomalous and porous material containing mixed amorphous and crystalline phases of ZnO and zinc phosphate in the presence of phosphate. To our knowledge, this is the first study in which the detailed process of phosphate-induced speciation and microstructural transformation of ZnO NPs has been analyzed. In view of the wide existence of phosphate contamination in water and its strong metal-complexation capability, phosphate-induced transformations may play an important role in the behaviors, fate, and toxicity of many other metal-based nanomaterials in the environment.

Authors+Show Affiliations

State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22651907

Citation

Lv, Jitao, et al. "Dissolution and Microstructural Transformation of ZnO Nanoparticles Under the Influence of Phosphate." Environmental Science & Technology, vol. 46, no. 13, 2012, pp. 7215-21.
Lv J, Zhang S, Luo L, et al. Dissolution and microstructural transformation of ZnO nanoparticles under the influence of phosphate. Environ Sci Technol. 2012;46(13):7215-21.
Lv, J., Zhang, S., Luo, L., Han, W., Zhang, J., Yang, K., & Christie, P. (2012). Dissolution and microstructural transformation of ZnO nanoparticles under the influence of phosphate. Environmental Science & Technology, 46(13), 7215-21. https://doi.org/10.1021/es301027a
Lv J, et al. Dissolution and Microstructural Transformation of ZnO Nanoparticles Under the Influence of Phosphate. Environ Sci Technol. 2012 Jul 3;46(13):7215-21. PubMed PMID: 22651907.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dissolution and microstructural transformation of ZnO nanoparticles under the influence of phosphate. AU - Lv,Jitao, AU - Zhang,Shuzhen, AU - Luo,Lei, AU - Han,Wei, AU - Zhang,Jing, AU - Yang,Ke, AU - Christie,Peter, Y1 - 2012/06/08/ PY - 2012/6/2/entrez PY - 2012/6/2/pubmed PY - 2012/10/30/medline SP - 7215 EP - 21 JF - Environmental science & technology JO - Environ. Sci. Technol. VL - 46 IS - 13 N2 - The toxicity and fate of nanoparticles (NPs) have been reported to be highly dependent on the chemistry of the medium, and the effects of phosphate have tended to be ignored despite the wide existence of phosphate contamination in aqueous environments. In the present study the influence of phosphate on the dissolution and microstructural transformation of ZnO NPs was investigated. Phosphate at a low concentration rapidly and substantially reduced the release of Zn(2+) into aqueous solution. Synchrotron X-ray absorption spectroscopy and X-ray diffraction analysis reveal that interaction between ZnO NPs and phosphate induced the transformation of ZnO into zinc phosphate. Transmission electronic microscopy observation shows that the morphology of the particles changed from structurally uniform nanosized spherical to anomalous and porous material containing mixed amorphous and crystalline phases of ZnO and zinc phosphate in the presence of phosphate. To our knowledge, this is the first study in which the detailed process of phosphate-induced speciation and microstructural transformation of ZnO NPs has been analyzed. In view of the wide existence of phosphate contamination in water and its strong metal-complexation capability, phosphate-induced transformations may play an important role in the behaviors, fate, and toxicity of many other metal-based nanomaterials in the environment. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/22651907/Dissolution_and_microstructural_transformation_of_ZnO_nanoparticles_under_the_influence_of_phosphate_ L2 - https://dx.doi.org/10.1021/es301027a DB - PRIME DP - Unbound Medicine ER -