Biobased Synthesis of Gold Nanoparticles by Methanobactin

DOI

10.2991/emim-15.2015.151How to use a DOI?

Keywords

Methanobactin; Methanotrophs; Au (III) reduction; Gold nanoparticles.

Abstract

Preparation of gold nanoparticles with a narrow size distribution has enormous importance in nanotechnology. Methanobactin (Mb) is a copper-binding small peptide that appears to function as an agent for Cu sequestration and uptake in methanotrophs. Mb can also bind and catalytically reduce Au (III) to Au (0). In the presence of hydroquinone as a electron donator, Mb can catalyze Au( ) reduce to Au(0) and yield gold nanoparticles continuously. In this paper, a quantitative assay method for the content of Mb has been used. Continuous reduction of Au (III) by Mb can be achieved by using hydroquinone as the reducing agent. Effect of pH, reaction temperature, reaction time on Mb-mediated synthesis of gold nanoparticles was studied. The optimal conditions of gold nanoparticles synthesis were as follows: the optimum pH value was 5.1, the optimum reaction temperature was 40 , the optimum reaction time was 15-20min. The gold nanoparticles are extremely stable and can resist aggregation, even after several months.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jiaying Xin
AU  - Shuai Zhang
PY  - 2015/04
DA  - 2015/04
TI  - Biobased Synthesis of Gold Nanoparticles by Methanobactin
BT  - Proceedings of the 2015 International Conference on Education, Management, Information and Medicine
PB  - Atlantis Press
SP  - 775
EP  - 778
SN  - 2352-5428
UR  - https://doi.org/10.2991/emim-15.2015.151
DO  - 10.2991/emim-15.2015.151
ID  - Xin2015/04
ER  -