Characterization and activity of the Ce and N co-doped TiO2 prepared through hydrothermal method
Characterization and activity of the Ce and N co-doped TiO2 prepared through hydrothermal method
复制标题
水热法制备Ce、N共掺杂TiO2的表征及活性
DOI：
10.1016/j.cej.2013.09.095
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发表时间：
2014-01-15
影响因子：
15.1
通讯作者：
Zhang, Jinlong
中科院分区：
文献类型：
--
作者：
Nasir, Muhammad;Bagwasi, Segomotso;Zhang, Jinlong
CE/N共掺杂的TIO2是通过使用硝酸盐和四丁酰丁酸酯（TBOT）的水热法制备的。样品以不同的技术（例如。 X射线衍射（XRD），透射电子显微镜（TEM），拉曼光谱，X射线光电子光谱（XPS），傅立叶转化红外光谱（FTIR），热力计仪分析（TGA），UV可见的弥散反射光谱（UV-脉冲反射光谱） VIS。对于纯，单掺杂和共掺杂的样品，XRD和拉曼光谱仅显示TiO2的启动酶相。 CE的XPS显示了CE3+和CE4+氧化态的存在。当CE在共掺杂的TiO2中引入CE时，样品的PL首先减少，而0.05 CE/N共掺杂TiO2的最大降低，然后随着样品中CE的增加而开始增加。我们发现了重组中心的量与样品的光效率之间的直接关系，这是通过25 mg/l酸橙7（AO-7）脱色来评估的。通过将CE与0.05 CE/N-TIO2样品表现出最大降解，共掺杂样品的活性大大增加了。 （c）2013 Elsevier B.V.保留所有权利。
The Ce/N co-doped TiO2 was prepared through hydrothermal method by using cerium nitrate and tetrabutyl orthotitanate (TBOT). Samples were characterized by different techniques such as. X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), fourier transformation infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), UV-visible diffuse reflectance spectroscopy (UV-vis. DRS) and photoluminescence spectroscopy (PLS). The XRD and Raman spectra showed only anatase phase of TiO2 for the pure, single doped and co-doped samples. The XPS of Ce showed the presence of both Ce3+ and Ce4+ oxidation states. The PLS of the samples showed first decrease in the recombination centers when Ce was introduced in co-doped TiO2 with the maximum decrease for 0.05 Ce/N co-doped TiO2 and then started increasing with the increase of Ce in the samples. We found a direct relationship between the amount of recombination centers and photoactivity of the samples, which was evaluated by the decolorization of 25 mg/L solution of Acid Orange 7 (AO-7). The activities of co-doped samples were highly increased by the incorporation of Ce with the maximum degradation exhibited by 0.05 Ce/N-TiO2 sample. (C) 2013 Elsevier B.V. All rights reserved.