Engineered Threonine-Zn-MOF/Agar Hybrid Aerogel for Dual-Functional Removal of Toxic Oxyanions via Adsorption–Photocatalysis Synergy
Yanrui Wang, Ting Yu, Xue Qing, Le Chen, Yue Chen, Zhonghua Sun, Junfeng Qian, Chang Guo, V. Yu. Gus’kov, Zhi‐Hui Zhang
Abstract
In this study, a Zn-based MOF was synthesized via a solvothermal method, and a series of AG/Zn-MOF-X composite aerogels were subsequently engineered through the controlled incorporation of agar. Comprehensive evaluation revealed that the AG/Zn-MOF-0.8 composite achieved remarkable removal efficiencies of 65, 61, and 100% for Cr 2 O 7 2–, CrO 4 2–, and MnO 4 –, respectively, outperforming pristine Zn-MOF by 14, 3, and 1%. An analysis of the kinetics and isotherms provided insights into the adsorption mechanisms. Notably, under photocatalytic conditions, the composite exhibited superior degradation with removal rates of 79, 86, and 100% for the respective oxyanions. These findings highlight that tailored MOF modifications can significantly boost both adsorption and photocatalytic performance, offering new possibilities for advanced water purification technologies.