Abstract
The realization of accurate and real-time monitoring of hazardous gases has received much recent attention. To facilitate the detection of toxic gases, multifarious nanofabrication techniques have been explored to make various gas sensors with excellent sensitivity, good reliability, and fast response/recovery available. In this contribution, two-dimensional (2D) porous ZnO nanoplates (NPs) hyper-dispersed with low concentration of Pt were synthesized via a convenient hydrothermal reaction followed by in-situ calcination when aged sensor film on the alumina tubes. Applying acetone as a probe molecule, gas sensing characteristics of both pristine ZnO and Pt-doped ZnO NPs were systematically investigated. The results have been proved that the as-prepared 0.01 mol% Pt-doped ZnO NPs sensor showed marked sensitivity toward acetone over 11 times higher than that of the pure ZnO sensor. Also, 0.01% Pt-doped ZnO NPs sensor exhibited superior selectivity against other reference gases, and outstanding trace sensing capability (Ra/Rg = 1.64–100 ppb). Probably both the hyper-dispersion of Pt species and the abundant surficial oxygen species jointly responsible for enhanced sensing performance of the obtained hybrid materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
