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.

引用

页数：7

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