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首页> 外文会议>Joint Conference on Chemistry >Effect of preparation methods on the activity of titanium dioxide-carbon nitride composites for photocatalytic degradation of salicylic acid
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Effect of preparation methods on the activity of titanium dioxide-carbon nitride composites for photocatalytic degradation of salicylic acid

机译：制备方法对水杨酸光催化降解二氧化钛 - 碳氮化物复合材料活性的影响

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In this study, titanium dioxide-carbon nitride (TiO2-CN) composites were prepared by three methods, which were one pot oxidation, impregnation, and physical mixing. Each series of the photocatalysts was prepared with different ratios of titanium to carbon (Ti/C), i.e., 1, 5, 10, 20, and 50 mol%. All samples were characterized by X-ray diffraction (XRD) and diffuse reflectance ultraviolet-visible (DR UV-Vis) spectroscopies. The characterization results confirmed the successful preparation of TiO2, CN, and the TiC>2-CN composites. Photocatalytic activity tests were carried out for degradation of salicylic acid at room temperature for 6 h under UV and visible light irradiations. It was confirmed that all the prepared TiO2-CN composites showed better photocatalytic activities than the bare TiO2 and the bare CN. Under UV light irradiation, 90.6% of salicylic acid degradation was achieved on the best composite prepared by one pot oxidation with 5 mol% of titanium to carbon (Ti/C) ratio. On the other hand, the highest degradation under visible light irradiation was 94.3%, observed on the composite that was prepared also by one pot oxidation method with the Ti/C ratio of 10 mol%. Therefore, among the investigated methods, the best method to prepare the titanium dioxide-carbon nitride composites with high photocatalytic activity was one pot oxidation method.
机译：在该研究中，通过三种方法制备二氧化钛 - 碳氮化物（TiO 2 -CN）复合材料，其是一种氧化壶氧化，浸渍和物理混合。用不同的钛的钛的钛（Ti / C），即，1,5,10,20和50mol％制备每一串的光催化剂。所有样品的特征在于X射线衍射（XRD），并弥漫反射率紫外 - 可见（DR UV-Vis）光谱。表征结果证实了TiO 2，CN和TIC> 2-CN复合材料的成功制备。在UV和可见光照射下进行光催化活性试验在室温下在室温下降解水杨酸6小时。确认所有制备的TiO2-CN复合材料显示出比裸滴和裸CN更好的光催化活性。在紫外光照射下，在用5摩尔％的钛与碳（Ti / C）比例中，在最佳复合物中实现了90.6％的水杨酸降解。另一方面，在可见光照射下的最高降解为94.3％，在复合材料上观察到由一个氧化壶氧化方法，Ti / C比率为10mol％。因此，在研究中，制备具有高光催化活性的二氧化钛 - 碳氮化物复合材料的最佳方法是一种氧化方法。

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