【作者】：Sufang Zhang, Wenhao Jiang, Yiwen Li, Xueli Yang, Peng Sun*, Fangmeng Liu, Xu Yan, Yuan Gao,Xishuang Liang, Jian Ma, Geyu Lu*
【题目】：Highly-sensitivity acetone sensors based on spinel-type oxide (NiFe2O4) through optimization of porous structure On-site monitoring of thiram via aggregation-induced emission enhancement of gold nanoclusters based on electronic-eye platform
【关键词】：Porous microsphere, NiFe2O4, Acetone sensor, One-step solvothermal approach
【版面信息】：Sensors & Actuators: B. Chemical 291 (2019) 266–274
摘要:
Spinel-type oxides have attracted a broad interest in sensing materials research owing to their high catalytic activity and flexibly tunable chemical properties. Here, we report the synthesis of superfine porous NiFe2O4microspheres by one-step solvothermal approach, in order to fabricate ultra-sensitive acetone sensors for real-time monitoring, relying on the high catalytic activity of NiFe2O4and effective mass transfer property of porous microspheres structure. The porous NiFe2O4sensors displayed high selectivity to acetone against other interfering gases, giving a high sensitivity (27.4), fast response time (2s) towards 100 ppm acetone and low detection limit (200 ppb) at 250℃. This paper proposed a general approach for fabricating highly sensitive gas sensor based on spinel-type oxides in monitoring volatile organic pollutants.
