title: Microbial synthesis of bimetallic PdPt nanoparticles for catalytic reduction of 4-nitrophenol.
abstract: Bimetallic nanoparticles are generally believed to have improved catalytic activity and stability due to geometric and electronic changes. In this work, biogenic-Pd (bio-Pd), biogenic-Pt (bio-Pt), and biogenic-PdPt (bio-PdPt) nanoparticles were synthesized by Shewanella oneidensis MR-1 in the absence or presence of quinone. Compared with direct microbial reduction process, the addition of anthraquinone-2,6-disulfonate (AQDS) could promote the reduction efficiency of Pd(II) or/and Pt(IV) and result in decrease of particles size. All kinds of nanoparticles could catalyze 4-nitrophenol reduction by NaBH4and their catalytic activities took the following order: bio-PdPt (AQDS) ∼ bio-PdPt > bio-Pd (AQDS) > bio-Pd > bio-Pt (AQDS) ∼ bio-Pt. Moreover, the bio-PdPt (AQDS) nanoparticles could be reused for 6 cycles. We believe that this simple and efficient biosynthesis approach for synthesizing bimetallic bio-PdPt nanocatalysts is important for preparing active and stable catalysts.
authors.affiliation: 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: Ya
authors.initials: Y
authors.lastname: Tuo
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China. guangfeiliumail@163.com.
authors.forename: Guangfei
authors.identifier: http://orcid.org/0000-0002-4096-4694
authors.initials: G
authors.lastname: Liu
authors.affiliation: 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: Bin
authors.initials: B
authors.lastname: Dong
authors.affiliation: 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: Huali
authors.initials: H
authors.lastname: Yu
authors.affiliation: 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
authors.affiliation: 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: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: 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: Ruofei
authors.initials: R
authors.lastname: Jin
mesh_terms: D000880:Anthraquinones; D001673:Biodegradation, Environmental; D002384:Catalysis; D053758:Nanoparticles; D009596:Nitrophenols; D010165:Palladium; D010316:Particle Size; D020592:Shewanella; D014227:Triazines
chemical_list: D000880:Anthraquinones; D009596:Nitrophenols; D014227:Triazines; C408124:anthraquinone-2,6-disulfonate; C042834:9,10-anthraquinone; C044359:3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine; D010165:Palladium; C024836:4-nitrophenol
keywords: 4-Nitrophenol; Bimetallic nanoparticles; Catalyst; Palladium; Platinum; Shewanella oneidensis MR-1