Title: Preparation of TiO₂ film on Ag and Al electrode for electrochemical bio-sensing application

Authors: Nibedita Patro; Priyabrata Pattanaik; Sushanta Kumar Kamilla

Addresses: Department of Electronics and Instrumentation Engineering, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Jagamohan Nagar, Khandagiri, Bhubaneswar, 751030, Odisha, India ' Department of Electronics and Communication Engineering, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Jagamohan Nagar, Khandagiri, Bhubaneswar-751030, Odisha, India ' Department of Physics, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Jagamohan Nagar, Khandagiri, Bhubaneswar, 751030, Odisha, India

Abstract: In this present, work, titanium dioxide (TiO₂) deposited on Ag and Al electrodes were fabricated by sol-gel chemical wet and dry (CWD) method to detect urea. The formation of the polycrystalline TiO₂ deposited on Ag and Al substrates were confirmed by X-ray diffraction (XRD) analysis. The XRD analyses of both the samples clearly indicated that some percentage of Ag and Al diffuses into the TiO₂ matrix at its interface region. The nature of I-V characteristics showed by the TiO₂ on Ag and Al wire electrodes are found to be Ohmic and is perfect to be used for electrochemical sensor or bio-sensor at very low potential value. The performance and response to various concentrations of urea solution and pH level were experimentally studied by using TiO₂ coated on Ag and Al as working electrodes with respect to Ag as reference electrode.

Keywords: titanium dioxide; TiO₂; chemical wet and dry; CWD; X-ray diffraction analysis; XRD; ammonia sensor.

DOI: 10.1504/IJNBM.2018.094908

International Journal of Nano and Biomaterials, 2018 Vol.7 No.4, pp.311 - 320

Received: 09 May 2017
Accepted: 05 Feb 2018
Published online: 26 Sep 2018 *

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