Hostname: page-component-788cddb947-t9bwh Total loading time: 0 Render date: 2024-10-13T07:47:37.233Z Has data issue: false hasContentIssue false

Microbial Synthesis of Noble Metal Nanoparticles using Metal-reducing Bacteria

Published online by Cambridge University Press:  01 February 2011

Yasuhiro Konishi
Affiliation:
yasuhiro@chemeng.osakafu-u.ac.jp, Osaka Prefecture University, Dept. of Chemical Engineering, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan, +81-72-254-9297, +81-72-254-9911
Kaori Ohno
Affiliation:
ohno@chemeng.osakafu-u.ac.jp, Osaka Prefecture University, Dept. of Chemical Engineering, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Norizoh Saitoh
Affiliation:
n_saito@chemeng.osakafu-u.ac.jp, Osaka Prefecture University, Dept. of Chemical Engineering, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Toshiyuki Nomura
Affiliation:
nomura@chemeng.osakafu-u.ac.jp, Osaka Prefecture University, Dept. of Chemical Engineering, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Shinsuke Nagamine
Affiliation:
nagamine@chemeng.osakafu-u.ac.jp, Osaka Prefecture University, Dept. of Chemical Engineering, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Get access

Abstract

Microbial synthesis of gold nanoparticles was achieved at 25°C and pH 7-1 using the mesophilic bacterium Shewanella algae with H2 as the electron donor. The microbial synthesis of gold nanoparticle was a fast process: 1 mM AuCl4 ions were completely reduced to insoluble gold within 30 min. At the solution pH 7, the gold nanoparticles of 10-20 nm were synthesized in the periplasmic space of S. algae cells. When the solution pH was decreased to 1, the gold nanoparticles of 50-500 nm were precipitated extracellularly. The solution pH was an important factor in controlling the morphology of biogenic gold particles and location of gold deposition.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Mukherjee, P., Ahmad, A., Mandal, D., Senapati, S., Sainkar, S.R., Khan, M.I., Ramani, R., Parischa, R., Ajayakuma, P.V., Alam, M., Sastry, M. and Kumar, R., Angew. Chem. Int. Ed. 40, 3585 (2001).Google Scholar
2 Gardea-Torresdey, J.L., Parsons, J.G., Gomez, E., Peralta-Videa, J., Troiani, H.E., Santiago, P. and Yacaman, M. J., Nano Let., 2, 397 (2002).Google Scholar
3 Lengke, M.F. and Southam, G., Geochim. Cosmochim. Acta 69, 3759 (2002).Google Scholar
4 Ahmad, A., Senapati, S., Khan, M.I., Kumar, R. and Sastry, M., Langmuir 19, 3550 (2003).Google Scholar
5 Shankar, S.S., Ahmad, A., Pasricha, R. and Sastry, M., J. Mater. Chem. 13, 1822 (2003).Google Scholar
6 Lengke, M.F., Fleet, M.E. and Southam, G., Langmuir 22, 2780 (2780).Google Scholar
7 Kashefi, K., Tor, J.M., Nevin, K.P. and Lovley, D.R., Appl. Environ. Microbiol. 67, 3275 (2001).Google Scholar
8 Konishi, Y., Tsukiyama, T., Ohno, K., Saitoh, N., Nomura, T. and Nagamine, S., Hydrometallurgy 81, 24 (24).Google Scholar
9 Caccavo, F., Blakemore, R.P. and Lovley, D.R., Appl. Environ. Microbiol. 58, 3211 (1992).Google Scholar