A Study of Pt^(4+)Adsorption and Its Reduction by Bacillus Megaterium D01  

作　　者：LIU Yue ying FU Jin kun ZHOU Zhao hui YU Xin sheng YAO Bing xin 

机构地区：[1]Department of Biology [2]Department of Chemistry,Xiamen University,Xiamen 361005,P.R.China

出　　处：《Chemical Research in Chinese Universities》2000年第3期246-249,共4页高等学校化学研究(英文版)

基　　金：Supported by the National Natural Science Foundation of China(No.2 97430 0 1 and No.2 9876 0 2 6 )

摘　　要：The properties of Pt 4+ adsorption and its reduction by Bacillus megaterium D01 were studied by means of ICP, anode stripping voltammetry, TEM, IR and XPS. The results of ICP analyses showed that the Pt 4+ adsorptive efficiency of the strain D01 was as high as 94.3% under the conditions of 100 mg Pt 4+ /L, 1 g biomass/L, pH 3.5 and at 30 ℃ for 24 h. Moreover, it was confirmed from anode stripping voltammetry that the strain D01 possessed a strong reducibility. The TEM analysis indicated that the strain D01 was able to adsorb and reduce Pt 4+ to Pt 0, small particles. The XPS result further supported the reduction of Pt 4+ to Pt 2+ , followed by the further recuction to Pt 0. The IR spectrum implied that D01 biomass adsorption of Pt 4+ may result in the complexation of the CO bond to the Pt species.The properties of Pt 4+ adsorption and its reduction by Bacillus megaterium D01 were studied by means of ICP, anode stripping voltammetry, TEM, IR and XPS. The results of ICP analyses showed that the Pt 4+ adsorptive efficiency of the strain D01 was as high as 94.3% under the conditions of 100 mg Pt 4+ /L, 1 g biomass/L, pH 3.5 and at 30 ℃ for 24 h. Moreover, it was confirmed from anode stripping voltammetry that the strain D01 possessed a strong reducibility. The TEM analysis indicated that the strain D01 was able to adsorb and reduce Pt 4+ to Pt 0, small particles. The XPS result further supported the reduction of Pt 4+ to Pt 2+ , followed by the further recuction to Pt 0. The IR spectrum implied that D01 biomass adsorption of Pt 4+ may result in the complexation of the CO bond to the Pt species.

关 键 词：BIOSORPTION BIOREDUCTION PLATINUM Bacillus megaterium 

分 类 号：O614[理学—无机化学]