1. Highly Functional Materials Based on Nano-Lignin, Lignin, and Lignin/Silica Hybrid Capped Silver Nanoparticles with Antibacterial Activities
- Author
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Cong Khanh Tran, Nguyen Ngan Nguyen, Hieu Van Le, Nhat Thong Tran, Dat Ha, Thu Hien Nguyen, DongQuy Hoang, Thi Thanh Van Tran, Dang Mao Nguyen, Ngoc T. Nguyen, Trang Nguyen, and Kangkyun Baek
- Subjects
Staphylococcus aureus ,Silver ,Polymers and Plastics ,Metal Nanoparticles ,Nanoparticle ,Biomass ,Bioengineering ,Microbial Sensitivity Tests ,macromolecular substances ,medicine.disease_cause ,Lignin ,complex mixtures ,Husk ,Silver nanoparticle ,Biomaterials ,chemistry.chemical_compound ,Escherichia coli ,Materials Chemistry ,medicine ,Chemistry ,fungi ,technology, industry, and agriculture ,food and beverages ,Silicon Dioxide ,Antimicrobial ,Anti-Bacterial Agents ,Chemical engineering ,Hybrid material - Abstract
Rice husk is one of the most abundant biomass resources in the world, yet it is not effectively used. This study focuses on the sustainably rice-husk-extracted lignin, nano-lignin (n-Lignin), lignin-capped silver nanoparticles (LCSN), n-Lignin-capped silver nanoparticles (n-LCSN), and lignin-capped silica-silver nanoparticles (LCSSN), and using them for antibacterial activities. The final n-Lignin-based products had a sphere-like structure, of which the size varied between 50 and 80 nm. We found that while n-Lignin and lignin were less effective against Escherichia coli than against Staphylococcus aureus, n-Lignin/lignin-based hybrid materials, i.e., n-LCSN, LCSN, and LCSSN, were better against E. coli than against S. aureus. Interestingly, the antimicrobial behaviors of n-LCSNs could be further improved by decreasing the size of n-Lignin. Considering the facile, sustainable, and eco-friendly method that we have developed here, it is promising to use n-Lignin/lignin-based materials as highly efficient antimicrobials without environmental concerns.
- Published
- 2021