Abstract
A novel NiO hollow sphere was synthesized by a simple water bath method while the carbon balls served as templates. Characterization and gas-sensing performance of NiO hollow spheres were tested. Owing to its hollow structure, the NiO obtained large specific surface area and abundant active sites. Furthermore, the gas sensors showed the enhanced formaldehyde sensing performance obtained a gas response of 21 to 50 ppm formaldehyde at 300 °C, short response/recovery time as 12 and 20 s, and excellent stability. These results indicate that the NiO hollow spheres play an important role on the VOCs sensing performance for practical detectors.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
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 call
