Abstract
One-dimensional In2O3 nanoicicles with decorative NiO nanoparticles have been prepared facilely by thermal vapor transport and chemical wet deposition followed by heat treatment. Growth of the single-crystalline In2O3 nanoicicles depends critically on temperature at which oxygen was introduced. An aggregated assembly of In2O3 nanorods with pyramidal tip first appears, which evolves into discrete, tapered nanoicicle geometry at 900 °C as the isothermal time lengthens. Gas-sensing properties of the nanoicicles have been examined against oxidizing NO2 and reducing H2S gases, respectively, over a range of working temperatures. A pronouncedly enhanced sensing response toward NO2 has been found for the NiO/In2O3 composite nanoicicles at a relatively low working temperature (≤ 100 °C), when compared to the pristine In2O3 counterpart. More importantly, the composite nanoicicles also show a sensing response of 25 times higher for the oxidizing NO2 gas than for the reducing H2S gas.
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 callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: 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.
