Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 97, Issue -, Pages 314-316Publisher
ELSEVIER
DOI: 10.1016/j.physe.2017.12.006
Keywords
NiO; Hollow spheres; Nanostructure; Functional; Sensors
Funding
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2016jcyjA0006]
- Chongqing Graduate Student Research Innovation Project [CYS17001]
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Hollow spheres are usually fabricated by hard template methods or soft template methods with soft surfactants, which is quiet tedious and time-consuming. In this paper, NiO hollow spheres with fluffy surface were successfully synthesized by a facile hydrothermal method and subsequent calcination, where bubbles acted as the template. NiO hollow spheres exhibited excellent gas sensing performances, which results from its hollow structure and high specific surface area. In addition, a possible evolution mechanism of NiO hollow spheres was proposed based on experimental results.
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