Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 636, Issue -, Pages 357-362Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.02.191
Keywords
Nickel oxide; Hierarchical architecture; Solvothermal; Sensing property
Categories
Funding
- National Natural Science Foundation of China [61403263, 51422402]
- Liaoning Educational Department Foundation [L2014167]
Ask authors/readers for more resources
Flower-like NiO hierarchical microspheres self-assembled with thin nanosheets were successfully synthesized by surfactant-free solvothermal method. The obtained product was characterized by means of X-ray diffraction, scanning electron microscopy, and ultraviolet-visible spectroscopy. The results showed that flower-like NiO hierarchical microspheres with a cubic structure were assembled by a number of thin nanosheets with a thickness of about 10 nm. Reaction time was an important parameter for the synthesis of perfect flower-like microspheres. The band gap energy of NiO hierarchical microspheres was estimated to be 3.68 eV. The gas sensing properties showed that the sensor exhibited the highest sensitivity of 3.2 for 100 ppm ethanol at an operating temperature of 250 degrees C. The reversible response to ethanol at various operating temperatures and gas concentrations and good selectivity were obtained, implying a potential application for the fabrication of high performance ethanol sensors. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available