Gas Sensing Properties of Carbon Nanotubes Decorated with Iridium Oxide Nanoparticles

Proceedings

Navarrete, Èric¹  Casanova-Cháfer, Juan²  Llobet, Eduard³ 

[1] Author to whom correspondence should be addressed.;MINOS-EMaS, Universitat Rovira i Virgili, 43007 Tarragona, Spain;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.

关键词: carbon nanotubes;    iridium oxide;    metal nanoparticles;    gas sensing;   

DOI  :  10.3390/proceedings2130874

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The properties of Iridium oxide (IrO2) decorated Multi-Wall Carbon Nanotubes (IrO2-MWCNTs) are studied for detecting nitrogen dioxide and ammonia vapors. IrO2 nanoparticles were synthetized using a hydrolysis and acid condensation growth mechanism, and subsequently employed for decorating the sidewalls of carbon nanotubes. Decorated MWCNTs films were deposited onto SiO2/Si substrates for achieving chemoresistive gas sensors. NO2 and NH3 gases were detected under different experimental conditions. Higher and more stable responses towards NH3 and NO2 were observed for iridium-oxide nanoparticle decorated MWCNT material, compared to bare MWCNT material. Raman Spectroscopy was employed to study the nanomaterials and the optimal operating temperatures were determined.

【 授权许可】

CC BY