期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 725, 期 -, 页码 869-876出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.07.222
关键词
AuNPs; Photo-catalysts; Methylene blue (MB); Electrochemical applications; Degradation of phenolic Azo-dyes
资金
- National Natural Science Foundation of China [51374016]
A highly efficient, quick and environmentally benign protocol has been adopted to synthesize AuNPs using the plant extract of Sueda fruciotosa. UV-vis spectroscopy, XRD, HRTEM, SEM and FTIR were used to characterize the prepared AuNPs. Different concentrations of plant extract were used to optimize the size, morphology and distribution of AuNPs. AuNPs were of small size and spheroid in shape at lower concentration. AuNPs showed a surface plasmon resonance at 443 nm. According to HRTEM the average size of AuNPs was 6-8 nm. The AuNPs were appraised for their photo degradation activity on methylene blue (MB) as an experimental substrate. Photo-catalytic activity of AuNPs was found to be dependent on the concentration of catalyst, irradiation time, size and aggregation of AuNPs. Furthermore, AuNPs exhibited an excellent electro-catalytic activity. The sensitivity of modified AuNPs was also studied for phenolic Azo dyes (PAD) which showed its good degradation activity. These gold nanoparticles found to be significantly applicable in the field of electrochemistry, sensors, catalysis, nano-devices, treatment of waste water and conversion of toxic agents into less toxic compound. (C) 2017 Elsevier B.V. All rights reserved.
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