Low-temperature wet chemical synthesis strategy of In2O3 for selective detection of NO2 down to ppb levels

作者：Navale, S. T.; Liu, Chenshitao; Yang, Z.; Patil, V. B.; Cao, P.; Du, B.; Mane, R. S.; Stadler, F. J.^*

来源：Journal of Alloys and Compounds, 2018, 735: 2102-2110.

DOI：10.1016/j.jallcom.2017.11.337

• Metal oxides
• Solution synthesis
• Indium oxide
• Structure and morphology
• NO2 sensor

Indium oxide microcubes (In2O3 MCs), an excellent gas sensing material, have been successfully prepared through a facile, low-temperature wet chemical synthesis method. X-ray diffraction, Raman shift, and Xray photoelectron spectral data have supported for the formation of crystalline In2O3 with body-center cubic crystal structure. In addition, scanning electron microscopy images have evidenced for irregular and compact In2O3 MCs assembly. As-synthesized In2O3 MCs when applied to construct low-cost high performance chemiresistive sensors for the reliable detection of NO2 at lower operating temperature demonstrates a remarkably high response of 1884 to 30 ppm @ 60 degrees C. The proposed solution-processed synthesis approach may show utility in constructing highly selective gas sensors for the detection of NO2 and many more hereafter.

• 出版日期2018-2-25
• 单位深圳大学