Abstract
Well-aligned ZnO nanotubular arrays (NTs) and nano rod-like arrays (NRs) were controllably fabricated on glass substrates through a facile hydrothermal method, and the prepared ZnO nanoarrays could be easily retrieved in the photodegradation of organic pollutants because ZnO is “growing” on the substrates. The morphology of ZnO nanoarrays could be governed by the cooling process and reaction time during the preparation. ZnO NTs tend to be formed by natural cooling, while ZnO NRs are apt to be constructed by sudden cooling. Furthermore, with the proceeding of the reaction, the ZnO nanoarrays display headless-pyramid configuration gradually. The ZnO nanoarrays prepared at 90 oC for 4 h show excellent photocatalytic activity. In the presence of the prepared ZnO NTs and NRs, the degradation rate of methylene blue (MB) is up to 96.8% and 94.1% after 1 h UV irradiation, respectively. The better photocatalytic performance of ZnO NTs is ascribed to the highly ordered array and large specific surface area which could promote the transfer of photo-generated electrons and restrain the recombination of electron-hole pairs. The well-aligned ZnO nanoarrays in this study could be fabricated on different substrates. Moreover, they could potentially serve as excellent photocatalysts in waste water treatment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.