Facile synthesis and characterization of novel dicarboxylate-Cu based MOFs materials

Potentiometric Determination of the Al(III) Ion in Polluted Water and Pharmaceutical Samples by a Novel Mesoporous Copper Metal–Organic Framework-Modified Carbon Paste Electrode

“…Because of the fact that most predominant peaks for the MOF samples are observed in the 2θ range from 6 to 26, which is characteristic of the structure of that particular MOF compounds and inorganic coordination polymer, , these data are in agreement with the previously published data for the Cu-MOFs and almost the inorganic mesoporous solids have 2θ in this range. Hence, the mesoporous character of CUF-1 is confirmed. ,,− This diffraction pattern of newly synthesized CUF-1 was not in agreement with those of other mesoporous materials reported in the literature in some 2θ peak value ranges, suggesting that CUF-1 has a new MOF phase . The crystallographic data of the prepared CUF-1 are concisely listed in (Table S1).…”

“…The significant sharpness of the peaks indicates that the size of CUF-1 was nanometric (derived from the Debye-Scherrer equation). 63 Because of the fact that most predominant peaks for the MOF samples are observed in the 2θ range from 6 to 26, which is characteristic of the structure of that particular MOF compounds and inorganic coordination polymer, 63,64 these data are in agreement with the previously published data for the Cu-MOFs and almost the inorganic mesoporous solids have 2θ in this range. Hence, the mesoporous character of CUF-1 is confirmed.…”

“…FT-IR spectroscopy is the most appropriate technique to provide ample details to find out how to bind ligands to metal ions. The FT-IR spectrum of CUF-1 (Figure S3) shows a disappearance of the sharp absorption peak at 2924 cm –1 for the NH + group because of the destroying the Zwitter ion effect of the (COO – ) group attached by the Cu metal, which further leads to the disappearance of an absorption peak at 1660 cm –1 for ν­(CO) of the carboxylate (COO – ) group and the appearance of a sharp absorption peak at 617 cm –1 owing to the Cu–O bond. , The two sharp absorption peaks at 1501 and 1380 cm –1 for ν­(COO – ) asymmetric and symmetric, respectively, indicate the presence of H 2 L in the CUF-1 structure. , The absence of the 1660–1800 cm –1 characteristic bands assigned to the protonated carboxylic groups suggests that the ligand (H 2 L) was fully deprotonated. , The appearance of a sharp absorption peak at 755 cm –1 is attributed to the Cu–O bond of coordinated water, which has been supported by the occurrence of an additional broad band at 3400–3550 cm –1 of the coordinated water . Finally, the disappearance of sharp absorption peaks at 3089 and 1759 cm –1 attributed to ν­(NH) and ν­(CO) of the ring form (Figure , structure D), respectively, indicates that the ligand (H 2 L) reacted with the Cu­(II) ion in the tautomeric form (Figure , structure C).…”

“…The FT-IR spectrum of CUF-1 (Figure S3) shows a disappearance of the sharp absorption peak at 2924 cm −1 for the NH + group because of the destroying the Zwitter ion effect of the (COO − ) group attached by the Cu metal, which further leads to the disappearance of an absorption peak at 1660 cm −1 for ν(CO) of the carboxylate (COO − ) group and the appearance of a sharp absorption peak at 617 cm −1 owing to the Cu−O bond. 60,64 The two sharp absorption peaks at 1501 and 1380 cm −1 for ν(COO − ) asymmetric and symmetric, respectively, indicate the presence of H 2 L in the CUF-1 structure. 63,64 The absence of the 1660−1800 cm −1 characteristic bands assigned to the protonated carboxylic groups suggests that the ligand (H 2 L) was fully deprotonated.…”

“…60,64 The two sharp absorption peaks at 1501 and 1380 cm −1 for ν(COO − ) asymmetric and symmetric, respectively, indicate the presence of H 2 L in the CUF-1 structure. 63,64 The absence of the 1660−1800 cm −1 characteristic bands assigned to the protonated carboxylic groups suggests that the ligand (H 2 L) was fully deprotonated. 12,63 The appearance of a sharp absorption peak at 755 cm −1 is attributed to the Cu−O bond of coordinated water, which has been supported by the occurrence of an additional broad band at 3400−3550 cm −1 of the coordinated water.…”