Biogenic synthesis of gold nanoparticles and their application in photocatalytic degradation of toxic dyes

Journal of Photochemistry and Photobiology. B, Biology
Debjani BaruahArchana Moni Das

Abstract

Plants and their extracts play an important role in the green synthesis of nanoparticles mainly because of their environmental benignity. Based on plant extracts number of metal nanoparticles have been synthesized. In our study, we report a green technique for the synthesis of gold nanoparticles using the aqueous extracts of Alpinia nigra leaves and their photocatalytic activities. The antioxidant, antibacterial and antifungal potential of the synthesized nanoparticles were also evaluated. The aqueous extract of the plant is rich in flavonoids with Total Flavonoid Content of 491mgRE/g extract. The presence of flavonoids was further confirmed through analytical High Performance Liquid Chromatography (HPLC) analysis. The A. nigra mediated syntheses of gold nanoparticles (ANL-AuNPs) were characterized by UV-Vis spectrophotometer, Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The crystalline nature of the ANL-AuNPs was confirmed by the powder XRD analysis. The TEM micrographs showed that the ANL-AuNPs was predominantly spherical in shape and the average particle size was 21.52 nm. The polyphenolics and other functional groups present in the aqueous extract that a...Continue Reading

Citations

Oct 28, 2019·Nanoscale Research Letters·Ericka Rodríguez-LeónRamón A Iñiguez-Palomares
Sep 10, 2020·International Journal of Nanomedicine·Sun Young ParkYoung-Whan Choi
Nov 12, 2019·Journal of Photochemistry and Photobiology. B, Biology·Debjani BaruahArchana Moni Das
Feb 11, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Andrea RónaváriMonika Kiricsi
Feb 17, 2021·International Journal of Biological Macromolecules·Hong WanHuihong Liu
May 1, 2021·Nanomaterials·Behnaz MehravaniAndrea Zille

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