Abstract
Novel human hair template templated layered ZnO gas-sensing nanotube materials (CT NiO/ZnO) were synthesised by using a simple and low-cost biotemplate approach. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray Detector（EDS）and Brunauer Emmett Teller (BET) were carried out to characterize the structure and morphology of the materials. The final CT NiO/ZnO composites materials were composed of hexagonal wurtzite ZnO and cubic NiO and exhibited hollow tubular structure. The p-n heterojunctions of the composites formed in the interface of NiO and ZnO. The results of gas sensitivity test indicated that CT NiO/ZnO had the great gas sensitivity (Rair/Rgas=68.82) and selectivity (5–10 times greater response than the other vapors) at 240 °C to n-butanol on a gas sensing platform. The enhancement of CT NiO/ZnO’s gas sensing properties were attributed to high concentration of oxygen vacancies and the formation of p-n heterojunctions after the introduce of NiO.
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: Colloids and Surfaces A: Physicochemical and Engineering Aspects
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.
