[16p-C301-1~18] 9.2 Nanoparticles, Nanowires and Nanosheets

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-C301-12] Development and evaluation of CH₄ sensor using IrO₂ nanosheets

〇(M2)Jian Ouyang¹, Ryo Toyoshima¹, Ken Uchida¹ (1.Tokyo Univ.)

Keywords:

Nanosheet,Sensor

Because CH₄ has a strong greenhouse effect, developing a sensor to monitor CH₄ concentrations is necessary. Here, IrO₂ has attracted attention as a sensor material. It has been reported that the surface of IrO₂ can strongly adsorb methane, causing the symmetrical structure of methane to distort, thereby promoting the C-H cleavage of methane.In this study, we calculated the adsorption and reaction energies of methane on the IrO₂(110) surface and changed the surface properties of the IrO₂(110) surface by controlling the annealing conditions. Our goal is to try to use the resistivity change during the reaction of IrO₂ surface with CH₄ to develop a sensor with high sensitivity to methane in the air.