材料科学
甲醛
丙酮
微球
半导体
醋酸
铋
铋铁氧体
化学工程
铁氧体(磁铁)
氧化物
纳米技术
热液循环
煅烧
复合材料
催化作用
冶金
有机化学
光电子学
化学
工程类
多铁性
电介质
铁电性
作者
K.M. Zhu,Shuyi Ma,Shitu Pei,Y. Tie,Q.X. Zhang,W.Q. Wang,Xiao Li Xu
标识
DOI:10.1016/j.matlet.2019.02.129
摘要
In this paper, well-crystallized walnut-shaped BiFeO3 microspheres have been successfully synthesized via a facile hydrothermal process. Meanwhile, the morphology growth process of walnut-shaped microspheres was investigated. The gas sensing properties of fabricated sensor based on BiFeO3 microspheres to different gases concluding formaldehyde, acetic acid, acetone and ethanol etc. were systematically studied. The results revealed that at the optimum operating temperature of 240 °C, the gas sensor exhibited typical p-type semiconductor gas sensing behavior concluding high response value, good repeatability and fast response/recovery time to formaldehyde, which also provides an experimental basis for bismuth ferrite to become a new multi-metal oxide semiconductor gas sensing materials in the future.
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