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    Sol-gel synthesis of Pd doped ZnO nanorods for room temperature hydrogen sensing applications

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    Sol-gel synthesis of Pd doped ZnO nanorods for room temperature hydrogen sensing applications.pdf (27.15Kb)
    Date
    2013-08
    Author
    Muhammad Kashif, Muhammad Faroow
    Md. Eaqub, Ali, Dr.
    Syed Muhammad Usman, Ali Shah, Dr.
    Uda, Hashim, Prof. Dr.
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    Abstract
    A sol-gel spin coating technique was described for the synthesis of Pd doped ZnO nanorods for hydrogen sensing applications. The nanorods were hexagonal in shape, 50-100 nm in diameter and uniform in distribution. They exhibited homogeneous surface morphology, c-axis orientation and excellent crystalline properties. The synthesized nanorods were used to sense and detect hydrogen in a homemade gas chamber. The fabricated sensor successfully detected as low as 40 ppm hydrogen at room temperature with a very low level of power supply (16.16 μA) under a mixed background. Dynamic and repeated responses were observed with a wide range of hydrogen concentrations (40-360 ppm) at 200 °C. The developed sensor was at least 25 fold more sensitive over the literature documented Pd doped ZnO nanorods in detecting hydrogen at ambient temperature. The simplicity, low-cost, high sensitivity and high stability of the sensor materials suggested that the synthesized Pd doped ZnO nanorods could be used in hydrogen and chemical sensing devices where Pd-mediated catalysis is involved.
    URI
    http://www.sciencedirect.com/science/article/pii/S0272884213001090
    http://dspace.unimap.edu.my:80/dspace/handle/123456789/33952
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    • Institute of Nano Electronic Engineering (INEE) (Articles) [206]
    • Uda Hashim, Prof. Ts. Dr. [243]

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