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Building of soft-hard compound brush in porous PVA/NH2@TAtZnO plural gel and the high-efficiency anti-interference removal on Pb(II).
Chemosphere. 2023 Apr; 319:137990.C

Abstract

In order to promote the heavy metal ions removal of porous gel adsorbent and protect the adsorbent from other pollutants in wastewater, the tetrapod ZnO whiskers (tZnO) modified by amino-chain brush was introduced into the polyvinyl alcohol (PVA) matrix to prepare the PVA/NH2@TAtZnO composites with brush structure for toxic Pb(II) removal. The adsorption property, adsorption process and adsorption mechanism were studied by adsorption isotherms, adsorption kinetics, adsorption thermodynamics, SEM-EDS analysis and XPS analysis. And the anti-interference ability and anti-interference mechanism were researched by SEM-EDS analysis and XPS analysis. It was found that the PVA/NH2@TAtZnO composites displayed a soft-hard compound pore-brush structure and showed a good selective adsorption on Pb(II). The research of isotherms and kinetics indicated that the adsorption process was fitted well to Langmuir model and pseudo-second-order model, respectively, and the research of thermodynamics revealed the endothermic nature. The adsorption mechanism was inferred as the combination of predominant chemisorption and subsidiary physisorption. Comparing with the neat PVA matrix, the PVA/NH2@TAtZnO composites displayed a good anti-interference property on Pb(II) adsorption and showed an alleviative clogging pore-canal structure in the wastewater with SiO2 NPs or PAC flocculants. The anti-interference intensity ΔQ and anti-interference factor χ were proposed to reflect the anti-interference ability of this adsorbent which was promoted with the increasing amino brush length or density. By the analysis of SEM-EDS and XPS, the anti-interference mechanism was explored as the steric-hinerance effect of tZnO hard brush to suspended SiO2 NPs pollutant and the coordination effect of functional amino soft brush to soluble PAC pollutant. Besides, the prepared PVA/NH2@TAtZnO adsorbent possessed a good reusability under multiple adsorption-desorption processes and also presented a well applicability in real water matrix. The research indicated the huge potential of prepared PVA/NH2@TAtZnO adsorbent in heavy metal ions removal.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Liu L
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China.
Xu S
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China. Electronic address: xs2953@163.com.
Wang Z
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China. Electronic address: wangzhenxi1978@126.com.
Chen X
College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, 2999 North Renmin Road, Songjiang District, Shanghai, 201620, China.
Cao M
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China.
Zhang S
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China.
Liu Y
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China.
Cui J
College of Sciences, Nanchang Institute of Technology, 289 Tianxiang Avenue, Gaoxin District, Nanchang, 330099, China.

MeSH

Polyvinyl AlcoholLeadWastewaterPorositySilicon DioxideMetals, HeavyThermodynamicsIonsAdsorptionWater Pollutants, ChemicalKineticsHydrogen-Ion Concentration

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36736838

Citation

Liu, Lingli, et al. "Building of Soft-hard Compound Brush in Porous PVA/NH2@TAtZnO Plural Gel and the High-efficiency Anti-interference Removal On Pb(II)." Chemosphere, vol. 319, 2023, p. 137990.
Liu L, Xu S, Wang Z, et al. Building of soft-hard compound brush in porous PVA/NH2@TAtZnO plural gel and the high-efficiency anti-interference removal on Pb(II). Chemosphere. 2023;319:137990.
Liu, L., Xu, S., Wang, Z., Chen, X., Cao, M., Zhang, S., Liu, Y., & Cui, J. (2023). Building of soft-hard compound brush in porous PVA/NH2@TAtZnO plural gel and the high-efficiency anti-interference removal on Pb(II). Chemosphere, 319, 137990. https://doi.org/10.1016/j.chemosphere.2023.137990
Liu L, et al. Building of Soft-hard Compound Brush in Porous PVA/NH2@TAtZnO Plural Gel and the High-efficiency Anti-interference Removal On Pb(II). Chemosphere. 2023;319:137990. PubMed PMID: 36736838.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Building of soft-hard compound brush in porous PVA/NH2@TAtZnO plural gel and the high-efficiency anti-interference removal on Pb(II). AU - Liu,Lingli, AU - Xu,Sheng, AU - Wang,Zhenxi, AU - Chen,Xiaoguang, AU - Cao,Meng, AU - Zhang,Shangxi, AU - Liu,Yang, AU - Cui,Jinlong, Y1 - 2023/02/01/ PY - 2022/11/11/received PY - 2023/01/25/revised PY - 2023/01/26/accepted PY - 2023/2/4/pubmed PY - 2023/2/22/medline PY - 2023/2/3/entrez KW - Adsorption mechanism KW - Anti-interference mechanism KW - Functional amino soft brush KW - Pb(II) removal KW - tZnO hard brush SP - 137990 EP - 137990 JF - Chemosphere JO - Chemosphere VL - 319 N2 - In order to promote the heavy metal ions removal of porous gel adsorbent and protect the adsorbent from other pollutants in wastewater, the tetrapod ZnO whiskers (tZnO) modified by amino-chain brush was introduced into the polyvinyl alcohol (PVA) matrix to prepare the PVA/NH2@TAtZnO composites with brush structure for toxic Pb(II) removal. The adsorption property, adsorption process and adsorption mechanism were studied by adsorption isotherms, adsorption kinetics, adsorption thermodynamics, SEM-EDS analysis and XPS analysis. And the anti-interference ability and anti-interference mechanism were researched by SEM-EDS analysis and XPS analysis. It was found that the PVA/NH2@TAtZnO composites displayed a soft-hard compound pore-brush structure and showed a good selective adsorption on Pb(II). The research of isotherms and kinetics indicated that the adsorption process was fitted well to Langmuir model and pseudo-second-order model, respectively, and the research of thermodynamics revealed the endothermic nature. The adsorption mechanism was inferred as the combination of predominant chemisorption and subsidiary physisorption. Comparing with the neat PVA matrix, the PVA/NH2@TAtZnO composites displayed a good anti-interference property on Pb(II) adsorption and showed an alleviative clogging pore-canal structure in the wastewater with SiO2 NPs or PAC flocculants. The anti-interference intensity ΔQ and anti-interference factor χ were proposed to reflect the anti-interference ability of this adsorbent which was promoted with the increasing amino brush length or density. By the analysis of SEM-EDS and XPS, the anti-interference mechanism was explored as the steric-hinerance effect of tZnO hard brush to suspended SiO2 NPs pollutant and the coordination effect of functional amino soft brush to soluble PAC pollutant. Besides, the prepared PVA/NH2@TAtZnO adsorbent possessed a good reusability under multiple adsorption-desorption processes and also presented a well applicability in real water matrix. The research indicated the huge potential of prepared PVA/NH2@TAtZnO adsorbent in heavy metal ions removal. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/36736838/Building_of_soft_hard_compound_brush_in_porous_PVA/NH2@TAtZnO_plural_gel_and_the_high_efficiency_anti_interference_removal_on_Pb_II__ DB - PRIME DP - Unbound Medicine ER -