Synthesis, Structural, Spectroscopic, and Morphology of Metal-Organic Frameworks Based on La (III) and Ligand 2,6-Napthalenedicarboxylic acid (La-MOFs) for Hydrogen Production

9th Annual Basic Science International Conference 2019

自然科学（总论）

Batubara, Ninda Hardina^1 ; Zulys, Agustino^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok

16424, Indonesia^1

关键词: Chemical bondings;    Crystallographic structure;    Lanthanum metals;    Metal organic framework;    Metalorganic frameworks (MOFs);    Redox potentials;    Solvothermal method;    Vibration spectroscopy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/546/4/042005/pdf
DOI  :  10.1088/1757-899X/546/4/042005

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

Metal-organic frameworks (MOFs) based on lanthanum metal ions (La3+) and 2,6-naphthalenedicarboxylic ligand (La-MOFs) have been synthesized by solvothermal method at 120 °C and 150 °C for 24 h using dimethylformamide and water (5:1) as a solvent. Furthermore, the chemical bonding and vibration spectroscopy, crystallographic structure, band gap, particle size and microscopic, and redox potential studies of La-MOFs were also investigated as well. FTIR results shown that there were no wave numbers at 1690-1730 cm-1, which affirmed that the La-MOFs had been formed. UV-VIS DRS characterization with solvent (DMF: Water) using (Ln3+) metal was confirmed at 492 nm (2.53 eV). SEM/EDX results shown that La-MOFs have an ultrahigh skeleton and the EDS revealed the composition of La, O, and C atoms that reside within La-MOFs, cyclic voltammetry results shown that LUMO level was-2.5 V vs. H+/H2. Finally, the photocatalytic activity of La-MOFs was performed, which produced 24.99 μmol of H2 after being measured for 4 hours.