Reduction of the photocatalytic activity of ZnO nanoparticles for UV protection applications

Tsuzuki, Takuya, He, Rongliang, Wang, Jinfeng, Sun, Lu, Wang, , Xungai and Hocking, Rosalie 2012, Reduction of the photocatalytic activity of ZnO nanoparticles for UV protection applications, International journal of nanotechnology, vol. 9, no. 10-12, pp. 1017-1029.

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Title Reduction of the photocatalytic activity of ZnO nanoparticles for UV protection applications
Author(s) Tsuzuki, Takuya
He, Rongliang
Wang, Jinfeng
Sun, Lu
Wang, , Xungai
Hocking, Rosalie
Journal name International journal of nanotechnology
Volume number 9
Issue number 10-12
Start page 1017
End page 1029
Total pages 13
Publisher Inderscience Publishers
Place of publication Geneva, Switzerland
Publication date 2012-10
ISSN 1475-7435
1741-8151
Keyword(s) UV protection
ZnO
nanoparticles
photocatalytic activity
doping
surface modification
Summary The detrimental effects of UV radiation are having a significant impact on our life and environment. The development of effective UV shielding agents is therefore of great importance to our society. ZnO nanoparticles are considered to be one of the most effective UV blocking agents. However, the development of ZnO-based UV shielding products is currently hindered due to the adverse effects of the inherent photocatalytic activity exhibited by ZnO. This paper reports our recent study on the possibility of reducing the photoactivity of ZnO nanoparticles via surface modification and impurity doping. It was found that the photoactivity was drastically reduced by SiO2-coatings that were applied to ZnO quantum dots using the Stöber method and a microemulsion technique. The effect of transition metal doping on the photoactivity was also studied using mechanochemical processing and a co-precipitation method. Cobalt doping reduced the photoactivity, while manganese doping led to mixed results, possibly due to the difference in the location of dopant ions derived from the difference in the synthesis methods.
Language eng
Field of Research 100708 Nanomaterials
Socio Economic Objective 920117 Skin and Related Disorders
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049632

Document type: Journal Article
Collection: Institute for Frontier Materials
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