TiO2反蛋白石结构膜材料改性及其光催化活性研究
首发时间:2012-10-15
摘要:利用液相沉积(Liquid Phase Deposition,LPD)技术对TiO2反蛋白石结构(Inverse Opal)材料进行表面处理,通过在反Opal孔内表面生成一层TiO2颗粒,增加其有效比表面积。以降解罗丹明B为探针反应,研究了经LPD表面处理之后的TiO2反Opal材料的光催化活性,考察了硼酸用量对TiO2反Opal材料表面形貌和光催化活性的影响。结果表明LPD处理之后的TiO2反Opal膜比未处理的膜具有更高的光催化活性,硼酸用量在0.55 g时处理的TiO2反Opal膜具有最高的光催化活性,相比未处理的膜催化剂活性提高了~6倍。
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Modification and Photocatalytic Activity of TiO2 Inverse Opal Membranes
Abstract:The surface of TiO2 inverse opal materials was modified by Liquid Phase Deposition(LPD) method, and a layer of TiO2 nanoparticles was deposited on the inverse opal framework in order to increase the specific surface area. The photo-catalytical degradation of Rhodamine B was used as the probe-reaction to investigate the photocatalysis activity of the TiO2 inverse Opal membranes, and the influences of boric acid concentration of the LPD solution on surface morphology and photocatalysis activity of TiO2 inverse opal membranes were investigated. It was showed that the photocatalysis activity of TiO2 inverse opal membrane modified by LPD method was increased and was about 6 times higher than that of the unmodified TiO2 inverse opal when the boric acid concentration of PLD solution was 0.015 g/mL.
Keywords: photocatalysis titanium dioxide inverse opal liquid phase deposition
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