title: Green synthesis of gold nanoparticles by a newly isolated strain Trichosporon montevideense for catalytic hydrogenation of nitroaromatics.
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.
authors.affiliation: 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.
authors.forename: Wenli
authors.initials: W
authors.lastname: Shen
authors.affiliation: 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. qyy@dlut.edu.cn.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Qu
authors.affiliation: 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.
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Pei
authors.affiliation: 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.
authors.forename: Xuwang
authors.initials: X
authors.lastname: Zhang
authors.affiliation: 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.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Ma
authors.affiliation: 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.
authors.forename: Zhaojing
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: 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.
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Li
authors.affiliation: 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.
authors.forename: Jiti
authors.initials: J
authors.lastname: Zhou
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods; D006865:Hydrogenation; D053768:Metal Nanoparticles / Q000737:chemistry*; D009596:Nitrophenols / Q000737:chemistry; D014250:Trichosporon / Q000378:metabolism*
chemical_list: D009596:Nitrophenols; D006046:Gold; C045573:2-nitrophenol; C049017:3-nitrophenol; C024836:4-nitrophenol
keywords: Biosynthesis; Catalyst; Gold nanoparticles; Nitroaromatics; Trichosporon montevideense