Synthesis of hierarchically structured ZnO spheres by facile methods and their photocatalytic deNOx properties.
This paper presents novel and facile methods for the fabrication of a series ZnO spheres by template-free, carbon template and hydrated-salt assisted solvothermal process, respectively. Phase purity and crystalline structure of the products were studied by X-ray diffraction analysis. SEM was employed to investigate the morphology and the fabrication of the monodisperse. BET analysis revealed that the as-prepared samples possessed huge specific surface area. UV-vis diffuse reflectance spectroscopy showed that these ZnO hollow spheres have a higher absorption. The as-prepared samples showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ>510, 400, 290nm), being superior to that of commercial TiO2 powders.
Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Huaqiao University, Xiamen 361021, China.
Yuelin
Y
Wei
Yunfang
Y
Huang
Jihuai
J
Wu
Min
M
Wang
Chongshen
C
Guo
Dong
D
Qiang
Shu
S
Yin
Tsugio
T
Sato
D000393:Air Pollutants / Q000737:chemistry*; D002384:Catalysis; D008027:Light; D009589:Nitrogen Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
D000393:Air Pollutants; D009589:Nitrogen Oxides; C009495:titanium dioxide; D014025:Titanium; D015034:Zinc Oxide