Journal
GELS
Volume 8, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/gels8030188
Keywords
glycyrrhetinic acid-derived; gel; Cu2+-triggered shrinkage; antimicrobial activity; dyes removal
Categories
Funding
- National Natural Science Foundation of China [81803390, 22077020]
- Natural Science Foundation of Guangdong Province [2021A1515010221]
- Special Fund Project of Science and Technology Innovation Strategy of Guangdong Province [(2018)352, (2020) 182]
- foundation of the Department of Educatio006E of Guangdong Province [2021ZDZX4041, 2020KZDZX1202, 2018KTSCX236, 2017KSYS010]
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In this study, a natural glycyrrhetinic acid-derived gel was successfully constructed, which showed excellent antimicrobial activity against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA). Moreover, the gel exhibited a high adsorption capacity for dyes, outperforming most reported dye adsorbent materials.
Hydrogels play important roles in function materials, especially in wastewater treatment, that could solve the problems of microbial infections and dye pollutions. Herein, a natural glycyrrhetinic acid-derived gel was successfully constructed by forming hierarchical assemblies of the glycyrrhetinic acid derivatives (GA-O-09) with Cu2+. Interestingly, the GA-O-09/Cu2+ gel exhibited Cu2+-triggered shrinkage, which was helpful for spontaneous self-demolding through the shrinkage process with a precise amount of Cu2+. Moreover, the gel showed excellent antimicrobial activity against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA) with minimum inhibitory concentrations (MICs) at 2.5 mu g/mL and 5.0 mu g/mL, respectively. Furthermore, the resultant GA-O-09/Cu2+ gel showed an excellent performance in dyes removal; the adsorption capacity at equilibrium (q(e)) could reach 82.91 mg/g according to a pseudo-second-order model, and it was better than most reported dye adsorbent materials. The experimental result suggested that the electrostatic interactions of the hydrogel with the cationic dyes and the hydrogel swelling were responsible for the possible dye removal mechanism of GA-O-09/Cu2+ gel. Therefore, our study holds the promise of a better future, for such a hydrogel could be used as an antibacterial and dye removal material.
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