引用本文:
葛秀涛, 侯长平, 刘杏芹. α-Fe2O3-MgO复合氧化物的制备和气敏性能[J]. 应用化学,
2001, 18(10): 813-816.
Citation: GE Xiu-Tao, HOU Chang-Ping, LIU Xing-Qin. Preparation and Gas-sensing Property of α-Fe2O3-MgO[J]. Chinese Journal of Applied Chemistry, 2001, 18(10): 813-816.
Citation: GE Xiu-Tao, HOU Chang-Ping, LIU Xing-Qin. Preparation and Gas-sensing Property of α-Fe2O3-MgO[J]. Chinese Journal of Applied Chemistry, 2001, 18(10): 813-816.
α-Fe2O3-MgO复合氧化物的制备和气敏性能
English
Preparation and Gas-sensing Property of α-Fe2O3-MgO
Abstract:
α-Fe2O3-MgO powder was prepared by a chemical coprecipitation method. The preparation conditions, phase constitution, conductance and gas sensing properties were investigated. The results show that pure phase Mg-Fe2O4-MgO could be obtained when Mg(NO3)2 and (NO3)3 were mixed in 1:2 molar ratio of Mg2+ to Fe3+ and calcined at 500℃ for 4 hours. The Mg-Fe2O4-MgO is an n-type semiconductor. The sensor based on Mg-Fe2O4-MgO calcined at 600℃ for 4 hours exhibited high sensitivity and good selectivity to C2H5OH.
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Key words:
- Mg-Fe2O4-MgO
- / C2H5OH
- / gas-sensing property
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