Affiliation:
1. Kunming University of Science and Technology
2. Kunming University of Science and Technology, and Analytic & Testing Research Center of Yunnan
Abstract
Abstract
Modifying with rare earth elements has been proven to be an effective means of enhancing the gas-sensing properties of oxides. In this work,Gd-In2O3 based sensor was developed, which showed high response to 100 ppm xylene gas (Ra/Rg = 17.8) fast response time (11 s) at 350°C, this response value was 5.4 times higher compared to the unmodified In2O3 sensor (Ra/Rg = 3.3). The introduction of the rare earth element not only improves the electrical properties of the sensitive material to provide a more suitable resistance, but also strengthens the gas adsorption ability and the catalytic effect on the surface of the sensitive material, leading to the enhanced sensing performance.
Publisher
Research Square Platform LLC
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