Hydrothermal Synthesis of Pt-, Fe-, and Zn-dopedSnO2Nanospheres and Carbon Monoxide Sensing Properties | Zendy

Weigen Chen | Zendy; Qu Zhou | Zendy; Shudi Peng | Zendy

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Hydrothermal Synthesis of Pt-, Fe-, and Zn-dopedSnO2Nanospheres and Carbon Monoxide Sensing Properties

Author(s) -

Weigen Chen,

Qu Zhou,

Shudi Peng

Publication year - 2013

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2013/578460

Subject(s) - materials science , hydrothermal circulation , dopant , doping , carbon monoxide , analytical chemistry (journal) , hydrothermal synthesis , spectroscopy , nanotechnology , chemical engineering , physics , optoelectronics , organic chemistry , catalysis , chemistry , quantum mechanics , engineering

Pure and M-doped (M = Pt, Fe, and Zn) SnO2 nanospheres were successfully synthesized via a simple and facile hydrothermal method and characterized by X-ray powder diffraction, field-emission scanning electron microscopy, and energy dispersive spectroscopy. Chemical gas sensors were fabricated based on the as-synthesized nanostructures, and carbon monoxide sensing properties were systematically measured. Compared to pure, Fe-, and Zn-doped SnO2 nanospheres, the Pt-doped SnO2 nanospheres sensor exhibits higher sensitivity, lower operating temperature, more rapid response and recovery, better stability, and excellent selectivity. In addition, a theoretical study based on the first principles calculation was conducted. All results demonstrate the potential of Pt dopant for improving the gas sensing properties of SnO2-based sensors to carbon monoxide

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