PHOTOCATALYTIC ACTIVITY OF NANOCRYSTALLINE GAHNITE (ZnAl2O4) SYNTHESIZED BY BALL MILLING

被引：0
作者：
Fabian, Martin [1 ]
Elias, Alexander [2 ]
Kostova, Nina [2 ]
Briancin, Jaroslav [2 ]
Balaz, Peter [1 ]
机构：
[1] Slovak Acad Sci, Inst Geotech, Kosice, Slovakia
[2] Bulgarian Acad Sci, Inst Catalysis, Sofia, Bulgaria
来源：
12TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE, SGEM 2012, VOL. III | 2012年
关键词：
ZnAl2O4; Acid Black 194; photocatalytic activity; milling; nanocrystalline; ZINC ALUMINATE SPINEL; CATALYST; SUPPORT;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
This work is focused on the structure characterization of nanocrystalline mechanochemically synthesized gahnite (ZnAl2O4) and its relationship to photocatalytic properties. The photocatalytic activity of the samples was tested with Chromium Acidic Black Diazo Dye (Colour Index Acid Black 194), which is used for colouring textiles and discharging it is being strictly forbidden. The results showed, that tested nanocrystalline ZnAl2O4 (3.8 eV, corresponding to 327 nm i.e. UV light) prepared by single-step mechanochemical synthesis reaches almost the same degree of conversion as standard reference photocatalyst TiO2 Degussa P25 (3.2 eV, corresponding to lambda=388 nm) under UV light irradiation. In this work the correlation between structure and photocatalytic activity have been discussed.
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页码：491 / 497
页数：7
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