Sheikhsamany Raana, Faghihian Hossein, Shirani Mahboube
Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Apr 15;291:122323. doi: 10.1016/j.saa.2023.122323. Epub 2023 Jan 4.
The visible light-active nanocomposite with the photocatalytic capability was facile one-pot solvothermal method successfully synthesized. X-ray diffraction (XRD), Thermogravimetry and Derivative Thermogravimetry (TG-DTG), Scanning Electron Microscopy with Energy Dispersive X-ray Analysis (SEM-EDX), Diffuse Reflectance Spectroscopy (UV-Vis DRS), and Fourier Transform Infra-Red (FT-IR) analysis were employed to characterize the synthetized BaTiZrO3, MIL-100(Fe), and the MIL-100(Fe)/BaTiZrO samples. As a result of the Scherrer equations, the size of grains for MIL-100(Fe), BaTiZrO, and MIL-100(Fe)/BaTiZrO was estimated to be 40.81, 12.00, and 22.70 nm, respectively. MIL-100(Fe), BaTiZrO, and MIL-100(Fe)/BaTiZrO samples showed bandgap values of 1.77, 3.02, and 2.56 determined from their absorption edge wavelengths. In the photodegraded solutions, chemical oxygen demand (COD) data and tetracycline (TC) absorbencies were used to obtain the rate constants of 0.032 min and 0.030 min, respectively. This corresponds to t-values of 27.7 min and 21.7 min, respectively, for the degradation and mineralization of TC molecules during photodegradation process.
通过简便的一锅溶剂热法成功合成了具有光催化能力的可见光活性纳米复合材料。采用X射线衍射（XRD）、热重分析和微商热重分析（TG-DTG）、带能谱分析的扫描电子显微镜（SEM-EDX）、漫反射光谱（UV-Vis DRS）和傅里叶变换红外光谱（FT-IR）分析对合成的BaTiZrO3、MIL-100(Fe)和MIL-100(Fe)/BaTiZrO样品进行了表征。根据谢乐方程，MIL-100(Fe)、BaTiZrO和MIL-100(Fe)/BaTiZrO的晶粒尺寸估计分别为40.81、12.00和22.70nm。MIL-100(Fe)、BaTiZrO和MIL-100(Fe)/BaTiZrO样品的带隙值分别由其吸收边波长确定为1.77、3.02和2.56。在光降解溶液中，利用化学需氧量（COD）数据和四环素（TC）吸光度分别得到了0.032min和0.030min的速率常数。这分别对应于光降解过程中TC分子降解和矿化的t值为27.7min和21.7min。
