Effect of Sm on Gas-Sensing Properties of SnO2 with Different Oxygen Vacancy Concentrations
来源期刊：JOURNAL OF RARE EARTHS2000年第1期
论文作者：HE Hong YE Qing WANG Dao JIN Jun LONG Jie
Key words：rare earths; tin oxide; oxygen vacancy; gas-sensing properties; samarium;
Abstract: The SnO2-x with different oxygen vacancy concentrations was modified by adding Sm. The modified SnO2-x was investigated by means of X-ray diffraction, X-ray photoelectron spectroscope, and scanning electron microscopy. Its gas-sensing properties to C2H6, C6H14, C2H5OH, CO, and H2 were studied too. The experiment results show that the gas-sensing properties of Sm/SnO2-x depend upon the amount of oxygen vacancies, therefore it is possible to improve gas-sensing properties of doped SnO2 by controlling its concentration of oxygen vacancy.
HE Hong1，YE Qing1，WANG Dao1，JIN Jun1，LONG Jie1
(1.Department of Chemistry and Environmental Engineering, Beijing Polytechnic University, Beijing 100022, China)
Abstract:The SnO2-x with different oxygen vacancy concentrations was modified by adding Sm. The modified SnO2-x was investigated by means of X-ray diffraction, X-ray photoelectron spectroscope, and scanning electron microscopy. Its gas-sensing properties to C2H6, C6H14, C2H5OH, CO, and H2 were studied too. The experiment results show that the gas-sensing properties of Sm/SnO2-x depend upon the amount of oxygen vacancies, therefore it is possible to improve gas-sensing properties of doped SnO2 by controlling its concentration of oxygen vacancy.
Key words:rare earths; tin oxide; oxygen vacancy; gas-sensing properties; samarium;
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