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Smith, Peter R., Holmes, Justin D., Richardson, David J. 
ORCID: https://orcid.org/0000-0002-6847-1832, Russell, David A. and Sodeau, John R.
(1998)
Photophysical and photochemical characterisation of bacterial semiconductor cadmium sulfide particles.
Journal of the Chemical Society - Faraday Transactions, 94 (9).
pp. 1235-1241.
ISSN 0956-5000
Abstract
Klebsiella pneumoniae forms electron-dense cadmium sulfide particles (ca. 5-200 nm in diameter) on the cell surface in response to the presence of cadmium ions in the growth medium. In the current study, these 'bio-semiconductor' particles have been spectroscopically characterised using UV-VIS absorption and luminescence analysis. The spectroscopic properties observed suggest that they are similar in size and possess photoactive traits analogous to CdS systems prepared by conventional chemical methods. The optical nature of the bacterial semiconductor particles means that, in principle, they are capable of performing a variety of photoredox reactions. The reactions involving photoelectrochemical indicators such as methyl viologen (MV2+) and methyl orange (MO-) are considered and, by comparing initial rates of reaction and altering reaction variables, a general mechanism of photoactivity for the cadmium sulfide 'bio-semiconductor' is proposed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/1600/1606 |
| Faculty \ School: | Faculty of Science > School of Biological Sciences Faculty of Science > School of Chemical Sciences and Pharmacy (former - to 2009) |
| UEA Research Groups: | Faculty of Science > Research Groups > Organisms and the Environment Faculty of Science > Research Groups > Molecular Microbiology Faculty of Science > Research Centres > Centre for Molecular and Structural Biochemistry |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 14 Jul 2022 16:31 |
| Last Modified: | 15 May 2023 00:54 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/86131 |
| DOI: | 10.1039/a708742j |
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