Journal
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Volume 30, Issue 7, Pages 2964-2975Publisher
SPRINGER
DOI: 10.1007/s10924-021-02366-1
Keywords
Polyvinyl alcohol; Graphene oxide; Electrostatic spinning; Adsorption
Categories
Funding
- Beijing Natural Science Foundation [2202014]
- School Level Cultivation Fund of Beijing Technology and Business University for Distinguished and Excellent Young Scholars [BTBUYP2021]
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In this study, a new nano-adsorbent graphene oxide was introduced to improve the adsorption performance of polyvinyl alcohol nanofibers. The results showed that PVA/GO nanofiber film had greatly enhanced adsorption of Cu2+, MB, and CR.
In recent years, the treatment of water pollution has been a challenging and far-reaching topic. In order to improve the adsorption performance of polyvinyl alcohol nanofibers, a new nano-adsorbent graphene oxide was introduced into them in this work. The water resistance and stability of nanofibers were improved by crosslinking glutaraldehyde. The introduction of GO greatly increased the adsorption of Cu2+, methylene blue (MB) and Congo red (CR). The adsorption kinetics and isotherm analysis of the PVA/GO nanofiber film during the adsorption process showed that the adsorption of Cu2+ and MB by PVA/GO nanofiber film was mainly chemical adsorption, while the adsorption of CR was mainly physical adsorption. The adsorption process of PVA/GO nanofiber film on Cu2+ was in line with the Langmuir isothermal adsorption model, that is, single molecular layer adsorption, the distribution of adsorption active sites was relatively uniform, and the increasing temperature was more conducive to the adsorption of Cu2+.
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