Nano chromium embedded in f-CNT supported CoBi-LDH nanocomposites for selective adsorption of Pb2+and hazardous organic dyes

Carbon Nanotubes Decorated with Coordination Polymers for Fluorescence Detection of Heavy-Metal Ions and Nitroaromatic Chemicals

“…The peak positions at 3486 and 2923 cm –1 demonstrate the presence of an O–H stretching vibration and symmetric C–H stretching. ,, The strong and intense band observed at 1620 cm –1 and another band near 1370 cm –1 are attributed to the asymmetric and symmetric stretching of the carboxylate groups, respectively, ,, where weakening of peaks can be observed after the MA-1@CNT was synthesized, and this is attributed to the MA-1’s linkage with the carboxylate groups on the surface of the F-CNT. In other bands found at 440 and below 1000 cm –1 , respectively, the vibrational modes of metal oxide (O–M–O) and (M–O) are noted, which ensure the coordination of Nd­(III) with the oxygen of the CO 2 H group on the CNT. , A group of absorption peaks at 1170 and 1735 cm –1 in the FT-IR spectrum of F-CNTs (Figure S1) are designated to the C–O, and C  O stretching vibrations, respectively, and a peak can be seen at 1640 cm –1 due to the hydrogen bonding between the OH – groups. It means that the CNT after acid treatment has been functionalized and some carboxyl groups are bonding with Nd­(III) ions to create carboxylates. ,, Predicated on the FT-IR results, it is possible to deduce that CNTs were effectively adorned with the MA-1 crystal.…”

“…In other bands found at 440 and below 1000 cm –1 , respectively, the vibrational modes of metal oxide (O–M–O) and (M–O) are noted, which ensure the coordination of Nd(III) with the oxygen of the CO 2 H group on the CNT. 22 , 40 A group of absorption peaks at 1170 and 1735 cm –1 in the FT-IR spectrum of F-CNTs ( Figure S1 ) are designated to the C–O, and C = O stretching vibrations, respectively, and a peak can be seen at 1640 cm –1 due to the hydrogen bonding between the OH – groups. It means that the CNT after acid treatment has been functionalized and some carboxyl groups are bonding with Nd(III) ions to create carboxylates.…”

“…Correspondingly, carbon nanotubes (CNTs) are regarded as promising precursors for the synthesis of composites, and they possess outstanding flexibility, high mechanical strength, chemical stability, high mechanical strength, and excellent electrical conductivity. , However, CNTs are hydrophobic, entangle with one another, and preferentially aggregate, just like many other nanomaterials. Several surface modification procedures have been explored to eliminate interfacial imperfections and enhance the quality of CNT dispersion in the polymer matrix.…”

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

“…Experiments were performed to test the adsorption of Pb +2 and two organic pigments, Congo red (CR) and Rose Bengal (RB), by prepared nanomaterial. Under optimum circumstances, the adsorption capacity of prepared nanomaterials for Pb 2+ pollutants was 503.2 mg g −1 and the percentage removal was 100% [105].…”

3D flower-like CuO@NiAl-LDH microspheres with enhanced removal affinity to organic dyes: mechanistic insights, DFT calculations and toxicity assessment

“…6 Adsorption performance of the catalysts: (a) adsorption capacity for CR; (b) removal efficiency for CR; (c) UV-vis curves for the adsorption-degradation removal of MB and CR mixed dyes by CuO@LDH-5 (experimental conditions: catalyst dosage = 0.2 g L −1 , initial pH = 6, MB concentration = 10 mg L −1 , CR concentration = 100 mg L −1 , H 2 O 2 concentration = 100 mM). (d) The adsorption capacity of this work in comparison with the literature [1][2][3]7,8,[43][44][45][46][47][48][49][50][51].…”