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Quantitative investigation of ZnO nanoparticle dissolution in the presence of δ-MnO2.
Environ Sci Pollut Res Int. 2020 May; 27(13):14751-14762.ES

Abstract

The widespread use of zinc oxide nanoparticles (ZnO NPs), the second most produced nanomaterial, inevitably leads to their release into the environment. In this study, dissolution and transformation of ZnO NPs in the presence of δ-MnO2, an abundant and ubiquitous manganese (Mn) oxide mineral, was investigated via a suite of techniques covering bulk to molecular scales. Dissolution kinetics indicated that the presence of δ-MnO2 significantly affected ZnO NP dissolution rate/trend and equilibrium Zn2+ concentration, which were found to be mainly dependent on the concentration and mass ratio of ZnO NPs and δ-MnO2. Approximately 300 mg ZnO NPs per g δ-MnO2 was expected for ZnO NP uptake at pH 7.0 via ZnO NP dissolution and surface Zn2+ adsorption. X-ray diffraction (XRD), ζ potential, high-resolution transmission electron microscopy (HR-TEM), and Zn K-edge X-ray absorption spectroscopy (XAS) results revealed that when the mole content of ZnO NPs was less than the total adsorption sites of δ-MnO2 surface, ZnO NPs were completely dissolved and adsorbed on δ-MnO2 surface in the form of inner-sphere complexes. A fraction of ZnO NPs persisted when the mole ratio of ZnO to δ-MnO2 further increased. These results suggest that the transformation and fate of ZnO NPs is affected by environment-relevant minerals such as Mn oxides due to their huge capacity of fixing dissolved metal cations at the surface or interlayer structure.

Authors+Show Affiliations

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. fxh73@mail.hzau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32052339

Citation

Wan, Biao, et al. "Quantitative Investigation of ZnO Nanoparticle Dissolution in the Presence of Δ-MnO2." Environmental Science and Pollution Research International, vol. 27, no. 13, 2020, pp. 14751-14762.
Wan B, Hu Z, Yan Y, et al. Quantitative investigation of ZnO nanoparticle dissolution in the presence of δ-MnO2. Environ Sci Pollut Res Int. 2020;27(13):14751-14762.
Wan, B., Hu, Z., Yan, Y., Liu, F., Tan, W., & Feng, X. (2020). Quantitative investigation of ZnO nanoparticle dissolution in the presence of δ-MnO2. Environmental Science and Pollution Research International, 27(13), 14751-14762. https://doi.org/10.1007/s11356-020-07965-4
Wan B, et al. Quantitative Investigation of ZnO Nanoparticle Dissolution in the Presence of Δ-MnO2. Environ Sci Pollut Res Int. 2020;27(13):14751-14762. PubMed PMID: 32052339.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Quantitative investigation of ZnO nanoparticle dissolution in the presence of δ-MnO2. AU - Wan,Biao, AU - Hu,Zhen, AU - Yan,Yupeng, AU - Liu,Fan, AU - Tan,Wenfeng, AU - Feng,Xionghan, Y1 - 2020/02/13/ PY - 2019/09/23/received PY - 2020/01/31/accepted PY - 2020/2/14/pubmed PY - 2020/7/11/medline PY - 2020/2/14/entrez KW - Adsorption KW - Dissolution KW - XAS KW - ZnO nanoparticles KW - δ-MnO2 SP - 14751 EP - 14762 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 13 N2 - The widespread use of zinc oxide nanoparticles (ZnO NPs), the second most produced nanomaterial, inevitably leads to their release into the environment. In this study, dissolution and transformation of ZnO NPs in the presence of δ-MnO2, an abundant and ubiquitous manganese (Mn) oxide mineral, was investigated via a suite of techniques covering bulk to molecular scales. Dissolution kinetics indicated that the presence of δ-MnO2 significantly affected ZnO NP dissolution rate/trend and equilibrium Zn2+ concentration, which were found to be mainly dependent on the concentration and mass ratio of ZnO NPs and δ-MnO2. Approximately 300 mg ZnO NPs per g δ-MnO2 was expected for ZnO NP uptake at pH 7.0 via ZnO NP dissolution and surface Zn2+ adsorption. X-ray diffraction (XRD), ζ potential, high-resolution transmission electron microscopy (HR-TEM), and Zn K-edge X-ray absorption spectroscopy (XAS) results revealed that when the mole content of ZnO NPs was less than the total adsorption sites of δ-MnO2 surface, ZnO NPs were completely dissolved and adsorbed on δ-MnO2 surface in the form of inner-sphere complexes. A fraction of ZnO NPs persisted when the mole ratio of ZnO to δ-MnO2 further increased. These results suggest that the transformation and fate of ZnO NPs is affected by environment-relevant minerals such as Mn oxides due to their huge capacity of fixing dissolved metal cations at the surface or interlayer structure. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/32052339/Quantitative_investigation_of_ZnO_nanoparticle_dissolution_in_the_presence_of_δ_MnO2_ L2 - https://dx.doi.org/10.1007/s11356-020-07965-4 DB - PRIME DP - Unbound Medicine ER -
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