Aspergillus niger biosensor based on tin oxide (SnO2) nanostructures: nanopowder and thin film

E  Azhir; R  Etefagh; N  Shahtahmasebi; M  Mohammadi; D  Amiri  and R  Sarhaddi

doi:10.17485/ijst/2012/v5i7.14

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Aspergillus niger biosensor based on tin oxide (SnO2) nanostructures: nanopowder and thin film

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2012/v5i7.14

Year: 2012, Volume: 5, Issue: 7, Pages: 1-3

Original Article

Aspergillus niger biosensor based on tin oxide (SnO2) nanostructures: nanopowder and thin film

E. Azhir^1*, R. Etefagh¹ , N. Shahtahmasebi¹ , M. Mohammadi² , D. Amiri³ and R. Sarhaddi⁴

^1* Nano Research Center, Faculty of Science,
² Angstrom Thin Film Research Laboratory,
³ Fungi lab, Faculty of Science, Ferdowsi University of Mashhad,
⁴ Physics Department, Faculty of Science, University of Birjand, [email protected]
*Author For Correspondence
E. Azhir
Physics Department
Email:[email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

In this paper, SnO2 thin film and nanopowder were prepared by spray pyrolysis and sol-gel methods, respectively. The SnO2 nanostructures were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Then Aspergillus niger fungus were cultured in an appropriate medium and were exposed to the SnO2 nanofilm and nanopowder. The nano-system electric resistance was measured in the presence of produced gases and the effect of time and temperature on nanobiosensors was studied. Then, SnO2 nanobiosensor was characterized in the presence of silicagel and calcium carbonate.
Keywords: Nanobiosensor, Aspergillus niger fungi, Spray pyrolysis technique, Sol gel method