Please use this identifier to cite or link to this item: https://doi.org/10.1002/asia.202001146
Title: Biogenic Synthesis of Silver Nanoparticles with High Antimicrobial and Catalytic Activities using Sheng Di Huang (Rehmannia glutinosa)
Authors: Yong, DWY 
Lieu, ZZ 
Cao, X
Yong, XE
Wong, JZL
Cheong, YS
Browder, LK
Chin, WS 
Keywords: Biogenic synthesis
Rehmannia Glutinosa
Silver nanoparticles
antimicrobial
noble metal catalysis
phytochemical screening.
Aminophenols
Anti-Infective Agents
Catalysis
Green Chemistry Technology
Metal Nanoparticles
Nitrophenols
Plant Extracts
Plants, Medicinal
Rehmannia
Silver
Issue Date: 1-Feb-2021
Publisher: Wiley
Citation: Yong, DWY, Lieu, ZZ, Cao, X, Yong, XE, Wong, JZL, Cheong, YS, Browder, LK, Chin, WS (2021-02-01). Biogenic Synthesis of Silver Nanoparticles with High Antimicrobial and Catalytic Activities using Sheng Di Huang (Rehmannia glutinosa). Chemistry - An Asian Journal 16 (3) : 237-246. ScholarBank@NUS Repository. https://doi.org/10.1002/asia.202001146
Abstract: Silver nanoparticles (AgNPs) are widely sought after for a variety of biomedical and environmental applications due to their antimicrobial and catalytic properties. We present here a green and simple synthesis of AgNPs utilizing traditional Chinese medicinal herbs. The screening of 20 aqueous herb extracts shows that Sheng Di Huang (Rehmannia glutinosa) had the most promising potential in producing AgNPs of 30±6 nm, with narrow size distribution and high crystallinity. The antimicrobial activities of these AgNPs conducted on E. coli cells were found to be superior in comparison to poly(vinylpyrrolidone)-capped AgNPs synthesized using common chemical method. Additionally, the AgNPs obtained possess excellent catalytic performance in the reduction of 4-nitrophenol to 4-aminophenol. We compared the phytochemical and FTIR spectral analyses of the herb extract before and after synthesis, in order to elucidate the phytochemicals responsible for the reduction of Ag+ ions and the capping of the AgNPs produced.
Source Title: Chemistry - An Asian Journal
URI: https://scholarbank.nus.edu.sg/handle/10635/193000
ISSN: 18614728
1861471X
DOI: 10.1002/asia.202001146
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