Methanobactin-Mediated Synthesis of Gold Nanoparticles Supported over Al2O3 toward an Efficient Catalyst for Glucose Oxidation

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	Methanobactin-Mediated Synthesis of Gold Nanoparticles Supported over Al2O3 toward an Efficient Catalyst for Glucose Oxidation
	Xin JY(辛嘉英)1,2; Lin, Kai 1; Wang, Yan 1; Xia CG(夏春谷)2
刊名	International Journal of Molecular Sciences
	2014
卷号	15 期号:12 页码:21603-21620
关键词	methanobactin bioreduction glucose oxidation gold nanoparticles Au/Al2O3 catalysts
ISSN号	1422-0067
通讯作者	辛嘉英
英文摘要	Methanobactin (Mb) is a copper-binding peptide that appears to function as an agent for copper sequestration and uptake in methanotrophs. Mb can also bind and reduce Au(III) to Au(0). In this paper, Au/Al₂O₃ catalysts prepared by a novel incipient wetness-Mb-mediated bioreduction method were used for glucose oxidation. The catalysts were characterized, and the analysis revealed that very small gold nanoparticles with a particle size <4 nm were prepared by the incipient wetness-Mb-mediated bioreduction method, even at 1.0% Au loading (w/w). The influence of Au loading, calcination temperature and calcination time on the specific activity of Au/Al₂O₃ catalysts was systematically investigated. Experimental results showed that decomposing the Mb molecules properly by calcinations can enhance the specific activity of Au/Al₂O₃ catalysts, though they acted as reductant and protective agents during the catalyst preparation. Au/Al₂O₃ catalysts synthesized by the method exhibited optimum specific activity under operational synthesis conditions of Au loading of 1.0 wt % and calcined at 450 °C for 2 h. The catalysts were reused eight times, without a significant decrease in specific activity. To our knowledge, this is the first attempt at the preparation of Au/Al₂O₃ catalysts by Mb-mediated in situ synthesis of gold nanoparticles.
学科主题	物理化学与绿色催化
收录类别	SCI
资助信息	the National Natural Science Foundation of China (20873034;21073050);Heilongjiang Provincial Funds for Distinguished Young Scientists (JC201106)
语种	英语
WOS记录号	WOS:000346797400001
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/19290]
专题	兰州化学物理研究所_OSSO国家重点实验室
作者单位	1.Harbin Univ Commerce, Key Lab Food Sci & Engn, Harbin 150076, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xin JY,Lin, Kai,Wang, Yan,et al. Methanobactin-Mediated Synthesis of Gold Nanoparticles Supported over Al2O3 toward an Efficient Catalyst for Glucose Oxidation[J]. International Journal of Molecular Sciences,2014,15(12):21603-21620.
APA	Xin JY,Lin, Kai,Wang, Yan,&Xia CG.(2014).Methanobactin-Mediated Synthesis of Gold Nanoparticles Supported over Al2O3 toward an Efficient Catalyst for Glucose Oxidation.International Journal of Molecular Sciences,15(12),21603-21620.
MLA	Xin JY,et al."Methanobactin-Mediated Synthesis of Gold Nanoparticles Supported over Al2O3 toward an Efficient Catalyst for Glucose Oxidation".International Journal of Molecular Sciences 15.12(2014):21603-21620.