Hou Chentao, Xie Jianqiong, Yang Haolan, Chen Shumin, Liu Hualin
College of Geology and Environment, Xi'an University of Science and Technology Xi'an 710054 People's Republic of China
RSC Adv. 2019 Nov 21;9(65):37911-37918. doi: 10.1039/c9ra07999h. eCollection 2019 Nov 19.
A new high-efficiency photocatalyst CuO@TiOF/TiO was synthesized by a hydrothermal method and applied to the degradation of tetracycline hydrochloride (TTCH). The samples were analyzed by SEM, EDS, XRD, BET, UV-vis DRS, Raman, PL, FT-IR. The Cu : Ti = 1 : 8 catalyst showed a narrow band gap of 2.10 eV, indicating that it can degrade TTCH as a novel photocatalyst capable of responding to sunlight. The average particle diameter is (2-6) nm, and the particle size distribution is narrow. When the reaction was carried out under simulated solar light for 3 hours, the efficiency for degrading 10 mg L tetracycline hydrochloride was as high as 96.83% when the catalyst dosage was 40 mg. It is shown from the capture experiments that ·O and ·OH play a major role in this reaction. In addition, it was found that the degradation of TTCH conforms to the first-order kinetic model.
采用水热法合成了一种新型高效光催化剂CuO@TiOF/TiO，并将其应用于盐酸四环素（TTCH）的降解。通过扫描电子显微镜（SEM）、能谱仪（EDS）、X射线衍射仪（XRD）、比表面积分析仪（BET）、紫外可见漫反射光谱仪（UV-vis DRS）、拉曼光谱仪、光致发光光谱仪（PL）、傅里叶变换红外光谱仪（FT-IR）对样品进行了分析。Cu : Ti = 1 : 8的催化剂显示出2.10 eV的窄带隙，表明它作为一种能够响应太阳光的新型光催化剂可以降解TTCH。平均粒径为（2 - 6）nm，粒径分布窄。当在模拟太阳光下反应3小时，催化剂用量为40 mg时，降解10 mg L盐酸四环素的效率高达96.83%。捕获实验表明，·O 和·OH在该反应中起主要作用。此外，发现TTCH的降解符合一级动力学模型。
