Tong Haixia, He Ruidong, Chen Gao, Tong Zhuo, Dang Mingming, Li Junhua, Wu Daoxin, Qian Dong
School of Chemistry and Chemical Engineering, Changsha University of Science and Technology & Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha 410114, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
School of Chemistry and Chemical Engineering, Changsha University of Science and Technology & Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha 410114, China.
J Colloid Interface Sci. 2024 Oct;671:732-741. doi: 10.1016/j.jcis.2024.05.211. Epub 2024 May 28.
Developing visible-light response photocatalysts with high activity and adsorption alongside sustainability is vitally important to environmental restoration. Here, we fabricated a novel metal organic framework (MOF) with cost-effective double-ligands (fumaric acid and 2-aminoterephthalic acid as ligand precursors, denoted as MA-MOF) via a facile solvothermal method. Specifically, crystalline [ZrO(OH)(fumarate)] (MOF-801) can be only formed with monocarboxylic acids as modulators. Therefore, in the construction of crystalline double-ligand MA-MOF, the absence of monocarboxylic acid modulators successfully prevents the formation of crystalline MOF-801. Instead, the crystalline double-ligand MA-MOF is formed. Properties of MA-MOFs including the surface area, porosity, charge transfer resistance, and energy level position can be adjusted via altering the ratio of ligands. The optimal sample, MA-MOF2 (prepared with a molar ratio of fumaric acid and 2-aminoterephthalic acid being 2:1), shows a total 94.6% removal of tetracycline via adsorption and photodegradation, far exceeding the corresponding single-ligand counterparts. This work proposes an innovative inverted modulator strategy for constructing double-ligand MOFs.
开发具有高活性、吸附性能且可持续的可见光响应光催化剂对于环境修复至关重要。在此,我们通过简便的溶剂热法制备了一种具有成本效益的双配体新型金属有机框架(MOF)(以富马酸和2-氨基对苯二甲酸作为配体前体,记为MA-MOF)。具体而言,仅以一元羧酸作为调节剂时才能形成晶体[ZrO(OH)(富马酸盐)](MOF-801)。因此,在构建晶体双配体MA-MOF时,不存在一元羧酸调节剂成功地阻止了晶体MOF-801的形成。相反,形成了晶体双配体MA-MOF。MA-MOF的性质,包括表面积、孔隙率、电荷转移电阻和能级位置,可以通过改变配体比例来调节。最佳样品MA-MOF2(以富马酸和2-氨基对苯二甲酸的摩尔比为2:1制备)通过吸附和光降解显示四环素的总去除率为94.6%,远远超过相应的单配体对应物。这项工作提出了一种用于构建双配体MOF的创新反向调节剂策略。
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