A new biocompatible ternary Layered Double Hydroxide Adsorbent for ultrafast removal of anionic organic dyes

Abstract

It would be of great significance to introduce a new biocompatible Layered Double Hydroxide (LDH) for the efficient remediation of wastewater. Herein, we designed a facile, biocompatible and environmental friendly layered double hydroxide (LDH) of NiFeTi for the very first time by the hydrothermal route. The materialization of NiFeTi LDH was confirmed by FTIR, XRD and Raman studies. BET results revealed the high surface area (106 m2/g) and the morphological studies (FESEM and TEM) portrayed the sheets-like structure of NiFeTi nanoparticles. The material so obtained was employed as an efficient adsorbent for the removal of organic dyes from synthetic waste water. The dye removal study showed >96% efficiency for the removal of methyl orange, congo red, methyl blue and orange G, which revealed the superiority of material for decontamination of waste water. The maximum removal (90%) of dyes was attained within 2 min of initiation of the adsorption process which supported the ultrafast removal efficiency. This ultrafast removal efficiency was attributed to high surface area and large concentration of -OH and CO32− groups present in NiFeTi LDH. In addition, the reusability was also performed up to three cycles with 96, 90 and 88% efficiency for methyl orange. Furthermore, the biocompatibility test on MHS cell lines were also carried which revealed the non-toxic nature of NiFeTi LDH at lower concentration (100% cell viability at 15.6 μg/ml). Overall, we offer a facile surfactant free method for the synthesis of NiFeTi LDH which is efficient for decontamination of anionic dyes from water and also non-toxic.

Fabrication of a Gold-Supported NiAlTi-Layered Double Hydroxide Nanocatalyst for Organic Transformations

“…Figure 1 a illustrates the X-ray diffraction (XRD) spectrum of hydrothermally generated NiAlTi LDH, which could be correlated with the previously reported data. 4 , 5 The characteristic diffraction peaks of (00 L ) series [(003), (006), and (009)] detected at 11.43, 22.78, and 39.32°, respectively, illustrate the formation of the lamellar structure of LDH, intercalated with water and carbonate ions. The d -spacing for the (003) plane (0.866 nm) and the (110) plane (0.35 nm) could be easily linked with the reported Ti-assimilated LDHs.…”

“…When gold was supported over the surface of NiAlTi LDH, like the XRD spectrum, no changes were observed in the FTIR spectrum of Au/NiAlTi LDH, stating the existence of interlayered carbonate ions and water molecules ( Figure 2 a). 4 , 5 …”

Facile Microwave Hydrothermal Synthesis of ZnFe2O4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye

“…Therefore, the removal of organic dye molecules from industrial and urban effluents has become a very important issue. The dye removal process includes adsorption, coagulation, ion exchange, photocatalytic, membrane separation, and biological treatment [ 7 , 8 , 9 ]. Owing to the low cost of dye adsorption and the simplicity of design, it is the most suitable technology [ 10 ].…”

Study of Different Morphology of Zinc Hydroxide Salt as Adsorbent of Azo Dyes

“…Among various conventional wastewater treatment techniques which can be highlighted are adsorption, [8,9] electrochemical processes, [8] membrane filtration processes, [8,9] photocatalysis, [8,9] chemical oxidation, [8,9] ozonation, [8] coagulation, and ion exchange method. [9] Of which, the adsorption method stands out and aims to reach parameters such as complete removal of pollutants contained in the effluents, easy operational application, and regeneration of the adsorbent in a relatively simple way. [10] The absorbent that is best known for these wastewater treatment applications is the activated coal, however, it has major disadvantages concerning its high production and regeneration costs.…”