Enhanced Photocatalytic Activity of ZrO2-SiO2 Nanoparticles by Platinum Doping

被引：21
|
作者：
Kadi, Mohammad W. [1 ]
Mohamed, R. M. [1 ,2 ,3 ]
机构：
[1] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia
[2] CMRDI, Adv Mat Dept, Cairo 11421, Egypt
[3] King Abdulaziz Univ, Ctr Excellence Environm Studies, Jeddah 21589, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF PHOTOENERGY | 2013年 / 2013卷
关键词：
TITANIUM-DIOXIDE; BAND-GAP; TIO2; DEGRADATION; ZRO2;
D O I：
10.1155/2013/812097
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
ZrO2-SiO2 mixed oxides were prepared via the sol-gel method. Photo-assisted deposition was utilized for doping the prepared mixed oxide with 0.1, 0.2, 0.3, and 0.4 wt% of Pt. XRD spectra showed that doping did not result in the incorporation of Pt within the crystal structure of the material. UV-reflectance spectrometry showed that the band gap of ZrO2-SiO2 decreased from 3.04 eV to 2.48 eV with 0.4 wt% Pt doping. The results show a specific surface area increase of 20%. Enhanced photocatalysis of Pt/ZrO2-SiO2 was successfully tested on photo degradation of cyanide under illumination of visible light. 100% conversion was achieved within 20 min with 0.3 wt% of Pt doped ZrO2-SiO2.
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页数：7
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