A Highly Selective and Fast-Responding Hydrogen Sensor based on In2O3 Nanocubes
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064



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Research Paper | Material Science and Engineering | India | Volume 5 Issue 1, January 2016

A Highly Selective and Fast-Responding Hydrogen Sensor based on In2O3 Nanocubes

S. S. Tongaonkar, Pradip Patil

The In2O3 nanocubes were successfully synthesized without any templates by calcining the In (OH) 3 precursor in air at 300 oC for 2 h and their H2 sensing characteristics were investigated. The In (OH) 3 precursor was prepared through a wet chemical route at room temperature (27 oC) using InCl3, 4H2O and NH4OH as starting materials. The formation of In2O3 nanocubes was confirmed by X-ray diffraction measurement (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis. The In2O3 nanocubes exhibit excellent H2 sensing properties such as, high gas response (~ 130 to 50 ppm H2 at 325 oC), extremely rapid response (1 s), fast recovery (4-5 s), excellent repeatability and good selectivity. Furthermore, the lower detection limit is ~3.87 ppm, which is lower than the permissible explosive limit for H2. The experimental results demonstrate the potential of the In2O3 nanocubes as sensing material in the fabrication of hydrogen sensors.

Keywords: In2O3 nanocubes, H2 sensor, Semiconductor gas sensors, TEM, XRD

Edition: Volume 5 Issue 1, January 2016

Pages: 1823 - 1828

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How to Cite this Article?

S. S. Tongaonkar, Pradip Patil, "A Highly Selective and Fast-Responding Hydrogen Sensor based on In2O3 Nanocubes", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=NOV153242, Volume 5 Issue 1, January 2016, 1823 - 1828

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