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- W4308118527 endingPage "4645" @default.
- W4308118527 startingPage "4645" @default.
- W4308118527 abstract "In this work, a new environmentally friendly material for the removal of heavy metal ions was developed to enhance the adsorption efficiency of photocurable chitosan-based hydrogels (CHg). The acknowledged affinity of tannic acid (TA) to metal ions was investigated to improve the properties of hydrogels obtained from natural and renewable sources (CHg-TA). The hydrogel preparation was performed via a simple two-step method consisting of the photocrosslinking of methacrylated chitosan and its subsequent swelling in the TA solution. The samples were characterized using ATR-FTIR, SEM, and Folin-Ciocalteu (F&C) assay. Moreover, the mechanical properties and the ζ potential of CHg and CHg-TA were tested. The copper ion was selected as a pollutant model. The adsorption capacity (Qe) of CHg and CHg-TA was assessed as a function of pH. Under acidic conditions, CHg-TA shows a higher Qe than CHg through the coordination of copper ions by TA. At an alkaline pH, the phenols convert into a quinone form, decreasing the Qe of CHg-TA, and the performance of CHg was found to be improved. A partial TA release can occur in the copper solution due to its high hydrophilicity and strong acidic pH conditions. Additionally, the reusability of hydrogels was assessed, and the high number of recycling cycles of CHg-TA was related to its high mechanical performance (compression tests). These findings suggest CHg-TA as a promising green candidate for heavy metal ion removal from acidic wastewater." @default.
- W4308118527 created "2022-11-08" @default.
- W4308118527 creator A5000268130 @default.
- W4308118527 creator A5042844143 @default.
- W4308118527 creator A5077269808 @default.
- W4308118527 creator A5087293396 @default.
- W4308118527 date "2022-11-01" @default.
- W4308118527 modified "2023-09-30" @default.
- W4308118527 title "UV-Cured Chitosan-Based Hydrogels Strengthened by Tannic Acid for the Removal of Copper Ions from Water" @default.
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- W4308118527 doi "https://doi.org/10.3390/polym14214645" @default.
- W4308118527 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36365654" @default.
- W4308118527 hasPublicationYear "2022" @default.
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