Zn-doped mixed phase TiO2 nanomaterials were prepared by sol-gel method and characterized by XRD,SEM and PL measurements.The photocatalytic experiment was carried out by taking methyl blue (MB)solution as the target pollutant.The effects of Zn doping concentration on the crystal structure and photocatalytic performance of TiO2 were studied.The results shown that pure TiO2 was anatase/rutile mixed phase structure,and Zn doping can promote the anataseto rutile phase transformation.When the molar ratio of Zn/Ti reached 8%,a new phase ZnTiO3 formed and exhibited the highest photocatalytic activity.After 90 minutes of reaction,the degradation rate of MB by 8% Zn-TiO2 reached 56.2% and the reaction rate constant k was 0.0079min-1,which were 1.31 times and 1.41 times higher than that of pure TiO2.
Zhu Xiaodong, Wang Juan, Yu Qiang, Liu Hui, Bai Yu, Feng Wei
. Preparation and photocatalytic property of Zn-doped mixed crystal TiO2[J]. New Chemical Materials, 2021
, 49(8)
: 136
-139
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.028
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