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Construction of Indium and Cerium Codoped Ordered Mesoporous TiO2 Aerogel Composite Material and Its High Photocatalytic Activity

机译:铟铈共掺杂有序介孔TiO2气凝胶复合材料的制备及其高光催化活性

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摘要

In this study, ordered mesoporous In2O3‐CeO2/TiO2 aerogel composite material is fabricated via a sol–gel method. According to the preparation process of the aerogel, different weight percentages Ce(NO3)3 and In(NO3)3 are dissolved in the solvent, which would be completely dispersed in the porous gel when the system completely becomes gel. The prepared materials are used to degrade the Rhodamine B (Rh B) under visible light irradiation. 0.2 wt% In2O3‐0.2 wt% CeO2/TiO2 (In0.2‐Ce0.2/TiO2) sample has the highest degradation rate which reaches to 96.20%. When degradation time is continuously increased to 110 min, the degradation efficiency of In0.2‐Ce0.2/TiO2 sample is basically retained. The prepared In0.2‐Ce0.2/TiO2 sample has much better stability and reproducibility under visible light irradiation, the photocatalytic degradation efficiency of In0.2‐Ce0.2/TiO2 sample is still stable at more than 90% after the five times cycle.
机译:在这项研究中,有序介孔的In2O3-CeO2 / TiO2气凝胶复合材料是通过溶胶-凝胶法制备的。根据气凝胶的制备方法,将不同重量百分比的Ce(NO3)3和In(NO3)3溶解在溶剂中,当系统完全变成凝胶时,它们会完全分散在多孔凝胶中。制备的材料用于在可见光照射下降解罗丹明B(Rh B)。 0.2 wt%In2O3-0.2 wt%CeO2 / TiO2(In0.2-Ce0.2 / TiO2)样品的降解率最高,达到96.20%。当降解时间连续增加至110分钟时,In0.2‐Ce 0.2 / TiO 2 样品的降解效率基本保持。制备的In 0.2 -Ce 0.2 / TiO 2 样品在可见光照射下具有更好的稳定性和重现性,In In>的光催化降解效率五次循环后,sub> 0.2 -Ce 0.2 / TiO 2 样品仍稳定在90%以上。

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