Effects of Calcination Temperature on Properties of 0.5%Al-3%In-TiO2 Photocatalyst Prepared using Sol-gel Method
Effects of Calcination Temperature on Properties of 0.5%Al-3%In-TiO2 Photocatalyst Prepared using Sol-gel Method
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DOI：
10.1515/jaots-2016-0116
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发表时间：
2016
影响因子：
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通讯作者：
Wenjie Zhang;Chuanguo Li;Zheng Ma;Li-Lan Yang;Hongbo He
中科院分区：
文献类型：
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作者：
Wenjie Zhang;Chuanguo Li;Zheng Ma;Li-Lan Yang;Hongbo He
摘要采用溶胶-凝胶法制备了0.5%Al-3% In-TiO_2纳米晶，研究了煅烧温度对纳米晶的影响。XRD分析表明，0.5%Al-3% In-TiO_2样品均为锐钛矿结构。随着煅烧温度的升高，纳米TiO 2的晶粒尺寸和晶胞体积增大。煅烧温度的升高导致孔径增大，孔体积缩小。随着焙烧温度的升高，材料的比表面积、表面吸附-OH和吸附容量均降低。400 °C焙烧的0.5%Al-3% In-TiO_2样品具有最大的光催化活性。光催化降解甲基橙子可在40 min内完全脱色。在0.5%Al-3% In-TiO 2上，经过6个反应周期后，甲基橙子总脱色率从100%下降到85.9%。
Abstract 0.5%Al-3%In-TiO2 was prepared using sol-gel method to study the influence of calcination temperature. XRD patterns indicate anatase structure in all of the 0.5%Al-3%In-TiO2 samples. The crystallite size and cell volume of anatase TiO2 increase with increasing calcination temperature. The increase of calcination temperature leads to enlarging pore size and shrinking pore volume. The specific surface area, surface adsorbed -OH, and adsorption capacity of the materials decrease with increasing calcination temperature. The 0.5%Al-3%In-TiO2 sample calcinated at 400 °C has the maximum photocatalytic activity. Photocatalytic degradation of methyl orange can lead to total decoloration in 40 min. Total methyl orange decoloration efficiency decreases from 100% to 85.9% on 0.5%Al-3%In-TiO2 after 6 reaction cycles.