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首页> 外文期刊>RSC Advances >A novel porous egg-white (EW)/titania composite photocatalytic material for efficient photodegradation applications
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A novel porous egg-white (EW)/titania composite photocatalytic material for efficient photodegradation applications

机译：一种新型多孔蛋白（EW）/二氧化钛复合光催化材料，用于有效的光降解应用

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摘要

A novel porous egg-white (EW)/titania composite material was prepared via a facile nonaqueous precipitation method with EW as the porous skeleton. In a typical process, tetrabutyl titanate, a titanium precursor, was dissolved in ethanol to undergo a non-hydrolytic reaction with the aid of anhydrous formic acid under ultrasonication and form a porous structure with EW. The composite material was characterized by BET, XRD, FTIR spectroscopy, TEM, FE-SEM and photocatalytic degradation test. The results show that formic acid changes the characteristic structure of tetrabutyl titanate, increases the polarity of its C–O and Ti–O bonds, and promotes the non-hydrolytic de-etherization poly-condensation reaction. After ultrasonic treatment, the reaction product was rearranged to form anatase titania on EW to form a porous structure. The porous composite material had a mean pore size of 15.8 nm, BET surface area of 325.5 m ~(2) g ~(?1) and exhibited an excellent photocatalytic activity. The degradation rate of methyl orange using the EW/titania composite material reached 99.9% in 50 minutes, exhibiting an attractive prospect in wastewater treatment.
机译：通过ew作为多孔骨架，通过容易的非水沉淀法制体制备新型多孔蛋白（EW）/二氧化钛复合材料。在典型的方法中，钛酸钛酸钛酸盐溶解在乙醇中以借助于超声处理的无水甲酸进行非水解反应，并用EW形成多孔结构。复合材料的特征在于BET，XRD，FTIR光谱，TEM，Fe-SEM和光催化降解试验。结果表明，甲酸改变四丁基钛酸酯的特征结构，增加其C-O和Ti-O键的极性，并促进非水解脱醚化多缩合反应。超声处理后，重新排列反应产物以在EW上形成锐钛矿二氧化钛以形成多孔结构。多孔复合材料的平均孔径为15.8nm，BET表面积为325.5m〜（2）g〜（α1），并表现出优异的光催化活性。使用EW /二氧化钛复合材料的甲基橙的降解速率在50分钟内达到99.9％，在废水处理中表现出有吸引力的前景。

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