Assembly of ZnO Nanoparticles on SiO2@-Fe2O3 Nanocomposites for an Efficient Photo-Fenton Reaction

被引：12
作者：
Uma, Kasimayan [1 ]
Balu, Sridharan [2 ]
Pan, Guan-Ting [2 ]
Yang, Thomas C. -K. [1 ,2 ]
机构：
[1] Natl Taipei Univ Technol, Precis Anal & Mat Res Ctr, Taipei 106, Taiwan
[2] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei 106, Taiwan
来源：
INORGANICS | 2018年 / 6卷 / 03期
关键词：
photo-Fenton reaction; nanocomposites; photocatalytic activity; degradation;
D O I：
10.3390/inorganics6030090
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The SiO2@-Fe2O3/ZnO metal oxide nanocomposites employed in this study were obtained using the sol-gel method. Their photocatalytic activities were enhanced by photo-Fenton reactions. The metal oxide composite of ZnO and -Fe2O3 nanoparticles were deposited on the SiO2 nanospheres intended for visible light photocatalysis. Further, the as-synthesized SiO2@-Fe2O3/ZnO nanocomposites exhibited a robust crystallinity and a high adsorption of dye molecules when compared to SiO2@ZnO and SiO2@-Fe2O3 nanocomposites, respectively. The experimental results demonstrated a rapid Methylene Blue (MB) degradation among these catalysts within short intervals of time with the addition of -Fe2O3/ZnO mixed metal oxide catalysts on the SiO2 nanospheres. Finally, a photo-Fenton reaction was implemented to confirm the presence of the hydroxyl (OH) radicals, which are powerful agents used for the degradation of organic pollutants.
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页数：10
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