High Sensing Properties of 3 wt % Pd-Doped SmFe1- xMg xO3 Nanocrystalline Powders to Acetone Vapor with Ultralow Concentrations under Light Illumination.
High Sensing Properties of 3 wt % Pd-Doped SmFe1- xMg xO3 Nanocrystalline Powders to Acetone Vapor with Ultralow Concentrations under Light Illumination.
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DOI：
10.1021/acsami.7b17281
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发表时间：
2018-04
影响因子：
9.5
通讯作者：
Heng Zhang;H. Qin;Panpan Zhang;Jifan Hu
中科院分区：
文献类型：
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作者：
Heng Zhang;H. Qin;Panpan Zhang;Jifan Hu
采用溶胶-凝胶法制备了3wt % pd掺杂SmFe1- xMg xO3 （x = 0、0.1、0.2和0.3）的纳米晶粉末，并在750℃下退火。Pd:SmFe0.9Mg0.1O3在220℃时具有最大响应。当暴露于0.5 ppm丙酮蒸气时，未掺杂SmFeO3的响应为2.26,Pd:SmFe0.9Mg0.1O3的响应为7.16。在光照下，Pd:SmFe0.9Mg0.1O3具有更好的传感性能和更低的最佳工作温度。该传感器对丙酮蒸汽具有良好的选择性和稳定性。Pd:SmFe0.9Mg0.1O3对超低浓度丙酮蒸汽的高响应性和良好的选择性表明其在许多领域具有应用潜力。
Nanocrystalline powders of 3 wt % Pd-doped SmFe1- xMg xO3 ( x = 0, 0.1, 0.2, and 0.3) were prepared by a sol-gel method and annealed at 750 °C. Pd:SmFe0.9Mg0.1O3 has a maximum response at 220 °C. When exposed to 0.5 ppm acetone vapor, the response of undoped SmFeO3 is 2.26 and the response of Pd:SmFe0.9Mg0.1O3 is 7.16. Under light illumination, Pd:SmFe0.9Mg0.1O3 has a better sensing performance and lower optimal operating temperature. The sensor shows good selectivity and stability for acetone vapor. The high response and good selectivity of Pd:SmFe0.9Mg0.1O3 to ultralow concentrations of acetone vapor indicate its potential for applications in many areas.