Bacteriorhodopsin-ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour.

Kumar, Saurav and Bagchi, Sudeshna and Prasad, E.Senthil and Sharma, Anupma and Kumar, Ritesh and Kaur, Rishemjit and Singh, Jagvir and Bhondekar, Amol P (2016) Bacteriorhodopsin-ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour. Beilstein journal of nanotechnology, 7. pp. 501-10. ISSN 2190-4286

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Abstract

Zinc oxide (ZnO) and bacteriorhodopsin (bR) hybrid nanostructures were fabricated by immobilizing bR on ZnO thin films and ZnO nanorods. The morphological and spectroscopic analysis of the hybrid structures confirmed the ZnO thin film/nanorod growth and functional properties of bR. The photoactivity results of the bR protein further corroborated the sustainability of its charge transport property and biological activity. When exposed to ethanol vapour (reducing gas) at low temperature (70 °C), the fabricated sensing elements showed a significant increase in resistivity, as opposed to the conventional n-type behaviour of bare ZnO nanostructures. This work opens up avenues towards the fabrication of low temperature, photoactivated, nanomaterial-biomolecule hybrid gas sensors.

Item Type:	Article
Additional Information:	Open Access
Uncontrolled Keywords:	amphipol, bacteriorhodopsin, bio-hybrid, gas sensing, ITO, ZnO nanostructure
Subjects:	Q Science > QR Microbiology
Depositing User:	Dr. K.P.S.Sengar
Date Deposited:	04 Oct 2016 05:30
Last Modified:	04 Oct 2016 05:44
URI:	http://crdd.osdd.net/open/id/eprint/1914

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