CHEN Si-shun~. Study on adulteration synthesis and gas sensitive properties of nanometer α-Fe2O3 powders[J]. 2006, (3): 35-37. DOI: 10.13873/j.1000-97872006.03.012.
%) are prepared by sol-gel method in the citric acid system.By means of XRD and TEM
microstructure is analyzed.The gas-sensing properties of sensors are also measured.Obtained results show that the grain size becomes reqular and smaller
the sensor has high sensitivity
good selectivity
response-recovery characteristic and wide linear measurment range to H
2
S when quality fraction of Eu
2
O
3
is 5 % and optimum working temperature is(145 ℃).It is hopeful of developing into a new type of H
2
S sensing material.
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references
WO 3 纳米材料的H 2 S气敏特性 [J]. 魏少红,张岩,牛新书. 化学研究与应用 . 2004(03)