Study of the synthesis and Cl2 gas-sensing properties of nanometer HNO3-doped SnO2
作者： Xiao-bing Wang , Nan Qin , Tian-jun Lou , Xiang-dong Lou
DOI: 10.1016/J.PHYSB.2010.11.051
关键词:
摘要: Abstract We focused on the effects of inorganic acid HNO3 gas-sensing properties nanometer SnO2 and prepared powders via a dissolution–pyrolysis method. Furthermore, were characterized by means X-ray diffraction (XRD), scanning electron microscope (SEM), field emission microscopy (FESEM) energy-dispersive spectra (EDS). Several aspects surveyed, including calcining temperature, concentration nitric working temperature. The results showed that gas response 3 wt% HNO3-doped (calcined at 500 °C) to 10 ppm Cl2 reached 316.5, temperature 175 °C. Compared with pure SnO2, appropriate could increase sensitivity more significantly.
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