Fabrication of a new metal–organic framework for sensitive sensing of nitroaromatics and efficient dye adsorption

Abstract

The hydrothermal reaction of Cd(II) salt with rigid tetracarboxylate ligand, terphenyl-3,3 00 ,5,5 00 -tetracarboxylicSingle crystal X-ray diffraction showed that MOF 1 possesses a 3D microporous framework with 4-connected Dia topology which is based on {Cd 2 (CO 2 ) 4 } subunits. MOF 1 is a promising dual functional sensor with high selectivity and sensitivity for the detection and recognition of nitroaromatics (NACs) and Fe 3+ ions via alleviation of its fluorescence intensity. Furthermore, 1 also has an excellent capacity to adsorb methylene blue (MB) with high selectivity, and it retains almost similar adsorption performance after being recycled several times. The observed decrease in fluorescence intensity of 1 in the presence of NACs has been addressed by theoretical calculations which indicate that the intensity alleviation of 1 in the presence of NACs can be attributed to an electron and resonance energy transfer between 1 and nitro analytes.

Synthesis of 2D Metal–Organic Nanosheets (MONs) by Liquid Phase Exfoliation: Applications in Effective Delivery of Antiulcer Drugs and Selective Adsorption and Removal of Cationic Dyes

“…Wastewater emerging from some chemical plants consists of organic dye pollutants. With a global dye usage of almost 700,000 tonnes, the textile industry emerged as one of the worst polluters . Nearly all dyes are dangerous and carry a significant risk of causing malignant mutations; therefore, a variety of approaches have been employed in recent years to eliminate dye contaminants from wastewater .…”

A new {Cu3–Gd2} cluster as a two-in-one functional material with unique topology acting as a refrigerant and adsorbent for cationic dye

“…The adsorption efficiency of the current {Cu 3 – Gd 2 } system is either comparable or higher/lesser than those of the substances described in the literature (Table 2). 59–62…”

“…The adsorption efficiency of the current {Cu 3 -Gd 2 } system is either comparable or higher/lesser than those of the substances described in the literature (Table 2). [59][60][61][62] The higher adsorption of MB by the cluster is also concerned with the structure of the dyes under consideration. The linear structure (Table S7 †) of MB facilitates its contact with the adsorption sites in the cluster while the non-linear framework of MO hinders it from making direct contact with the cluster.…”

A Zn(II)-Organic Framework as a Fluorescent Probe for the Aqueous Phase Detection of Nitroaromatic Explosive and Cr(III) ion

“…Employing SAINT SOFTWARE, the reduction and integration of data were created [23]. The SADABS was used for empirical absorption correction [24] and XPREP was used to investigate the space group in Zn-MOF-1 [25]. The structure re nement was done by exploiting least-squares techniques on F 2 by employing the OLEX-2 program package [26].…”