Reverse Replacement in NH2-MIL-125?with 1,4-Dicarboxybenzene for Enhanced Photocatalytic Hydrogen Generation |
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| Authors: | Yijun Zhang Chunfang Wen Xuefeng Wu Peng Fei Liu Prof Hua Gui Yang |
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| Institution: | Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Xuhui District 130, 200231 Shanghai (P. R., China |
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| Abstract: | Metal-organic frameworks (MOFs) constructed by ligands and metal clusters, have been considered as a promising material for photocatalytic water splitting. In this work, a solvent-assisted ligand exchange (SALE) method has been applied through partial reverse substitution of the ligand in NH2-MIL-125 (Ti) by 1,4-dicarboxybenzene (BDC). This modification strategy can optimize the charge transfer dynamics together with the preserved light absorption, resulting in a 3.3 times higher hydrogen production rate compared to the pristine material under visible-light irradiation. This work broadens the field of ligand modifications of MOFs to boost the photocatalytic performance. |
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| Keywords: | ligand modifications metal-organic frameworks photocatalysis solvent-assisted ligand exchange |
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