Zirconia grafted carbon nanotubes based biosensor for M. Tuberculosis detection | Zendy

Maumita Das | Zendy; Chetna Dhand | Zendy; Gajjala Sumana | Zendy; Anchal Srivastava | Zendy; N. Vijayan | Zendy; R. Nagarajan | Zendy; Bansi D. Malhotra | Zendy

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Zirconia grafted carbon nanotubes based biosensor for M. Tuberculosis detection

Author(s) -

Maumita Das,

Chetna Dhand,

Gajjala Sumana,

Anchal Srivastava,

N. Vijayan,

R. Nagarajan,

Bansi D. Malhotra

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3645618

Subject(s) - materials science , carbon nanotube , biosensor , cubic zirconia , indium tin oxide , zirconium , electrode , glassy carbon , crystallite , chemical engineering , nanotechnology , nanostructure , carbon fibers , nanoparticle , electrochemistry , cyclic voltammetry , chemistry , composite material , thin film , metallurgy , ceramic , composite number , engineering

Zirconia (ZrO2) grafted multiwalled carbon nanotubes (CNTs) (crystallite size of ZrO2 ∼ 28.63 nm), obtained via isothermal hydrolysis of zirconium oxychloride in presence of CNT, have been electrophoretically deposited onto indium-tin-oxide (ITO) coated glass plate. High resolution electron microscopic investigations reveal assemblage of the ZrO2 nanostructure inside and around CNT cavities. Electrochemical impedance spectroscopic studies indicate ∼3.5 fold enhancement in charge transfer behaviour of NanoZrO2-CNT/ITO electrode compared to that of NanoZrO2/ITO electrode. Considering the synergy between biocompatible ZrO2 and electrochemically superior CNT, this nanobiocomposite has been explored to develop an impedimetric nucleic acid biosensor for M. Tuberculosis detection

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