Title :
Fungal biomolecules assisted biosynthesis of Au–Ag alloy nanoparticles and evaluation of their catalytic property
Author :
Tripathi, Ravi Mani ; Gupta, Rohit Kumar ; Bhadwal, Akhshay Singh ; Singh, Priti ; Shrivastav, Archana ; Shrivastav, B.R.
Author_Institution :
Dept. of Microbiol., Coll. of Life Sci., Gwalior, India
Abstract :
The catalytic reduction of methylene blue was studied using biosynthesised gold-silver (Au-Ag) alloy nanoparticles (NPs). The fungal biomass of Trichoderma harzianum was used as a reducing and stabilising agent in the synthesis of Au-Ag alloy NPs. The synthesised NPs were well characterised by UV-vis spectroscopy, dynamic light scattering, X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy. The plausible synthesis mechanism involved in the formation of Au-Ag alloy NPs was also discussed with diagrammatic representation. A series of experiments was performed to investigate the catalytic activity of the as-prepared Au-Ag alloy NPs and found that the alloy NPs show excellent catalytic activity.
Keywords :
Fourier transform infrared spectra; X-ray chemical analysis; X-ray diffraction; catalysis; dyes; gold alloys; light scattering; microorganisms; molecular biophysics; nanobiotechnology; nanofabrication; nanoparticles; reduction (chemical); silver alloys; transmission electron microscopy; ultraviolet spectra; visible spectra; AuAg; Fourier transform infrared spectroscopy; Trichoderma harzianum; UV-visible spectroscopy; X-ray diffraction; catalytic property; catalytic reduction; diagrammatic representation; dynamic light scattering; energy dispersive X-ray spectroscopy; fungal biomolecules assisted biosynthesis; gold-silver alloy nanoparticles; methylene blue; reducing agent; stabilising agent; transmission electron microscopy;
Journal_Title :
Nanobiotechnology, IET
DOI :
10.1049/iet-nbt.2014.0043
