Synthesis of lanthanum metal organic framework using 1,4 benzenedicarboxylic acid

Abstract

Lanthanum nitrate and 1,4 benzenedicarboxylic acid were used to synthesize lanthanum metal organic framework (LaMOF) by conventional heating (reflux) method in dimethylformamide (DMF). The product lanthanum benzenedicarboxylic (LaBDC-MOF) structural morphology and optical properties were determined with SEM (scanning electron microscope), XRD (X-ray diffraction), TGA (thermogravimetric analysis), FTIR (Fourier-transform infrared) spectroscopy and photoluminescence spectroscopy. The characterization findings and results of LaBDC-MOF indicated that LaBDC-MOF was crystalline and significantly thermal stable. FTIR displayed that there was deprotonation in the carboxylic acidic COOH- . SEM images showed that LaBDC-MOF was composed of different sizes of rods and small needles that are polyhedral-like in shape. Luminescence properties suggested that LaBDC-MOF can be used as a fluorescent probe.