以La2O3和FeCl3·6H2O为主要原料,利用盐介质固相反应法制备了LaFeO3纳米晶.用XRD、TEM分别对不同反应温度下的产品进行了物相和形貌表征,并研究了其对三乙胺、乙醇、汽油、苯和丙酮等的敏感性能.结果表明:反应温度为800 ℃时,产物为均相LaFeO3,粒度较均匀,平均粒径约为40 nm;将样品制成烧结型气敏元件,对三乙胺有较高的灵敏度和选择性,工作温度为250 ℃时对25 μg/g三乙胺的灵敏度仍达7.9,响应、恢复时间分别仅需6和13 s.
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