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

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...

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Autores principales: Kumar, Saurav, Bagchi, Sudeshna, Prasad, Senthil, Sharma, Anupma, Kumar, Ritesh, Kaur, Rishemjit, Singh, Jagvir, Bhondekar, Amol P
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2016
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4901555/
https://www.ncbi.nlm.nih.gov/pubmed/27335741
http://dx.doi.org/10.3762/bjnano.7.44
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author Kumar, Saurav
Bagchi, Sudeshna
Prasad, Senthil
Sharma, Anupma
Kumar, Ritesh
Kaur, Rishemjit
Singh, Jagvir
Bhondekar, Amol P
author_facet Kumar, Saurav
Bagchi, Sudeshna
Prasad, Senthil
Sharma, Anupma
Kumar, Ritesh
Kaur, Rishemjit
Singh, Jagvir
Bhondekar, Amol P
author_sort Kumar, Saurav
collection PubMed
description 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.
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spelling pubmed-49015552016-06-22 Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour Kumar, Saurav Bagchi, Sudeshna Prasad, Senthil Sharma, Anupma Kumar, Ritesh Kaur, Rishemjit Singh, Jagvir Bhondekar, Amol P Beilstein J Nanotechnol Full Research Paper 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. Beilstein-Institut 2016-04-04 /pmc/articles/PMC4901555/ /pubmed/27335741 http://dx.doi.org/10.3762/bjnano.7.44 Text en Copyright © 2016, Kumar et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Kumar, Saurav
Bagchi, Sudeshna
Prasad, Senthil
Sharma, Anupma
Kumar, Ritesh
Kaur, Rishemjit
Singh, Jagvir
Bhondekar, Amol P
Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title_full Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title_fullStr Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title_full_unstemmed Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title_short Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour
title_sort bacteriorhodopsin–zno hybrid as a potential sensing element for low-temperature detection of ethanol vapour
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4901555/
https://www.ncbi.nlm.nih.gov/pubmed/27335741
http://dx.doi.org/10.3762/bjnano.7.44
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