Biosynthesis of gold nanoparticles by Trichoderma sp. WL-Go for azo dyes decolorization |
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| Authors: | Yuanyuan Qu Wenli Shen Xiaofang Pei Fang M Shengnan You Shuzhen Li Jingwei Wang Jiti Zhou |
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| Institution: | 1 State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China;2 State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | Developing an eco-friendly approach for metallic nanoparticles synthesis is important in current nanotechnology research. In this study, green synthesis of gold nanoparticles (AuNPs) was carried out by a newly isolated strain Trichoderma sp. WL-Go. UV–vis spectra of AuNPs showed a surface plasmon resonance peak at 550 nm, and transmission electron microscopy images revealed that the AuNPs were of varied shape with well dispersibility. The optimal conditions for AuNPs synthesis were HAuCl4 1.0 mmol/L, biomass 0.5 g and pH 7–11. Moreover, the bio-AuNPs could efficiently catalyze the decolorization of various azo dyes. This research provided a new microbial resource candidate for green synthesis of AuNPs and demonstrated the potential application of bio-AuNPs for azo dye decolorization. |
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| Keywords: | Gold nanoparticles Biosynthesis Trichoderma Azo dyes Decolorization |
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