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Green synthesis of gold nanoparticles by a newly isolated strain Trichosporon montevideense for catalytic hydrogenation of nitroaromatics

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Abstract

Objective

To investigate green synthesis of gold nanoparticles (AuNPs) by Trichosporon montevideense, and to study their reduction of nitroaromatics.

Results

AuNPs had a characteristic absorption maximum at 535 nm. Scanning electron microscopy images revealed that the biosynthesized nanoparticles were attached on the cell surface. X-ray diffraction analysis indicated that the particles formed as face-centered cubic (111)-oriented crystals. The average size of AuNPs decreased from 53 to 12 nm with increasing biomass concentration. The catalytic reduction of 2-nitrophenol, 3-nitrophenol, 4-nitrophenol, o-nitrophenylamine and m-nitrophenylamine (0.1 mM) by NaBH4 had reaction rate constants of 0.32, 0.44, 0.09, 0.24 and 0.39 min−1 with addition of 1.45 × 10−2 mM AuNPs.

Conclusions

An eco-friendly approach for synthesis of AuNPs by T. montevideense is reported for the first time. The biogenic AuNPs could serve as efficient catalysts for hydrogenation of various nitroaromatics.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 51508068), the Program for New Century Excellent Talents in University (No. NCET-13-0077), the Fundamental Research Funds for the Central Universities (No. DUT14YQ107), and the Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No. ESK201529).

Supporting Information

Supplementary materials and methods—Materials used in this study and method of identification of strain WIN.

Supplementary results and discussion—Isolation and identification of strain WIN.

Supplementary Fig. 1—The SEM image (a) and agar plate photo (b) of strain WIN. c Phylogenetic tree of Trichosporon montevideense WIN and related species.

Author information

Authors and Affiliations

  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

    Wenli Shen, Yuanyuan Qu, Xiaofang Pei, Xuwang Zhang, Qiao Ma, Zhaojing Zhang, Shuzhen Li & Jiti Zhou

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  1. Wenli Shen
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  2. Yuanyuan Qu
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  3. Xiaofang Pei
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  4. Xuwang Zhang
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  6. Zhaojing Zhang
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  7. Shuzhen Li
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  8. Jiti Zhou
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Corresponding author

Correspondence to Yuanyuan Qu.

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Shen, W., Qu, Y., Pei, X. et al. Green synthesis of gold nanoparticles by a newly isolated strain Trichosporon montevideense for catalytic hydrogenation of nitroaromatics. Biotechnol Lett 38, 1503–1508 (2016). https://doi.org/10.1007/s10529-016-2120-5

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  • DOI: https://doi.org/10.1007/s10529-016-2120-5

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