Zhang Xiaojuan, Yu Rongfei, Wang Dandan, Li Weihua, Zhang Yutao
School of Chemistry and Chemical Engineering, Anshun University, Anshun, China.
University Rural Revitalization Research Center in Guizhou, Anshun, China.
Front Chem. 2022 May 11;10:918941. doi: 10.3389/fchem.2022.918941. eCollection 2022.
A series of bimetallic Zn-Zr metal-organic frameworks (Zn-Zr MOFs) with different Zn:Zr molar ratios has been synthesized a green hydrothermal method. The structures and morphologies of these photocatalysts have been characterized and analyzed by FTIR, XRD, SEM, and nitrogen adsorption-desorption. The prepared Zn-Zr MOFs had large specific surface areas and pore volumes, favoring the adsorption of pollutant molecules, which in turn led to an improved photocatalytic effect. The photocatalytic activities of the Zn-Zr MOFs under visible light irradiation have been studied towards rhodamine B (RhB) as a target pollutant. The extent of degradation of RhB in a 40 mg/L aqueous solution reached 97.4%. The optimal photocatalyst could also degrade other dyes, suggesting a certain degree of universality.
通过绿色水热法合成了一系列具有不同锌锆摩尔比的双金属锌锆金属有机框架材料（Zn-Zr MOFs）。采用傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、扫描电子显微镜（SEM）和氮吸附-脱附等方法对这些光催化剂的结构和形貌进行了表征与分析。所制备的Zn-Zr MOFs具有较大的比表面积和孔体积，有利于污染物分子的吸附，进而提高了光催化效果。以罗丹明B（RhB）作为目标污染物，研究了Zn-Zr MOFs在可见光照射下的光催化活性。在40mg/L的水溶液中，RhB的降解率达到了97.4%。该最佳光催化剂还能降解其他染料，表明其具有一定程度的通用性。
