Abstract
In this study, both petal-shaped Al-doped (1 at%) ZnO (Al-ZnO) and Al-ZnO/CdO heterostructured nanomaterials were successfully designed and synthesized via a facile two-step hydrothermal method. Characterizations of crystallinity, morphology and composition were performed by XRD, HR-TEM, FE-SEM, EDS, XPS, and Raman. The results of XRD, HR-TEM, and XPS reveal that Al-ZnO/CdO materials grew well together and coexisted. The petal shaped Al-ZnO/CdO heterostructured nanocomposite with 2 mol% of CdO was exposed to NO2, NH3, CH3COCH3, C2H5OH, and H2 at an optimal operating temperature of 200 °C. Compared with pure ZnO and Al-ZnO, the petal-shaped Al-ZnO/CdO heterostructured nanocomposite exhibited specifically high enhanced performances in response and selectivity for the NO2 gas sensing. Moreover, the sensitivity to NO2 displayed excellent linear dependence in the range of 0.5 ∼ 5 ppm, which shows promise in the detection of NO2 using a petal-shaped Al-ZnO/CdO heterostructured nanocomposite-based sensor.
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.
