Superb adsorption capacity of hydrothermally synthesized copper oxide and nickel oxide nanoflakes towards anionic and cationic dyes
Source abstract
Abstract
The CuO and NiO nanoflakes were synthesized by a hydrothermal reaction. The secondary nucleation and growth of hydroxides resulted in the formation of flake like architectures as the prepared nanoparticles were used as an adsorbent for malachite green oxalate (MGO) and methyl orange (MO). The structure, morphology and surface properties of the nanoparticles were characterized by XRD, SEM and TEM. Effects of the experimental conditions on the adsorption behavior were studied by varying the contact time, initial concentration, initial pH and temperature. The adsorption of MGO increased with increase in the pH, while the MO adsorption showed an opposite trend. The adsorption kinetics was studied in terms of pseudo-first and second-order kinetics, the Langmuir and Freundlich models were also applied to the equilibrium adsorption data. The adsorption process was spontaneous and exothermic in nature and followed the pseudo-second-order kinetic model. Our study indicates that the CuO and NiO nanoflakes can be used as alternative adsorbents for the efficient removal of dyes from an aqueous solution.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Copper-based nanomaterials and applications · Pigment Synthesis and Properties · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Biodegradation of synthetic dyes—a review10.1007/s11270-010-0382-4 ↗
2. Selective removal of the heavy metal ions from waters and industrial wastewaters by ion-exchange method10.1016/j.chemosphere.2004.03.006 ↗
3. Removal of heavy metal ions from wastewaters: a review
4. Physico-chemical treatment techniques for wastewater laden with heavy metals10.1016/j.cej.2006.01.015 ↗
5. Iron(III)–Alginate fiber complex as a highly effective and stable heterogeneous fenton photocatalyst for mineralization of organic dye10.1021/ie404241r ↗
6. Removal of chemical oxygen demand and color from simulated textile wastewater using a combination of chemical/physicochemical processes10.1021/ie400855b ↗
7. Decontamination of an industrial cotton dyeing wastewater by chemical and biological processes10.1021/ie402750p ↗
8. Study of nonlinear wave propagation theory. 1. Dye adsorption by activated carbon10.1021/ie970374+ ↗
9. Multiwalled carbon nanotubes for speciation of chromium in environmental samples10.1016/j.jhazmat.2006.12.069 ↗
10. Complete oxidation of CO, ethanol, and ethyl acetate over copper oxide supported on titania and ceria modified titania10.1006/jcat.1998.2198 ↗
11. One-step synthesis of methyl isobutyl ketone from acetone and hydrogen over Cu-on-MgO catalysts10.1006/jcat.1999.2437 ↗
12. Surface properties of nickel oxide10.1016/0021-9517(66)90067-4 ↗
13. Preparation and study by electron microscopy of the development of texture with temperature of a porous exhydroxide nickel oxide10.1016/0021-9517(75)90300-0 ↗
14. Hannay · 1959
15. The Scherrer formula for X-ray particle size determination10.1103/PhysRev.56.978 ↗
16. Size-controlled synthesis of hierarchical NiO hollow microspheres and the adsorption for Congo red in water
17. Decoration of carbon nanotubes with chitosan10.1016/j.carbon.2005.06.020 ↗
18. Equilibrium and kinetic studies on basic dye adsorption by oil palm fibre activated carbon10.1016/j.cej.2006.09.010 ↗
19. Dye adsorption behavior of Luffa cylindrica fibers10.1016/j.jhazmat.2007.08.070 ↗
20. Kinetic, equilibrium and thermodynamic investigations of Ni(II), Cd(II), Cu(II) and Co(II) adsorption on barley straw ash10.1016/j.wri.2014.06.001 ↗
21. Synthesis of hierarchical Ni(OH)2 and NiO nanosheets and their adsorption kinetics and isotherms to Congo red in water10.1016/j.jhazmat.2010.09.104 ↗
22. Adsorption of toluene, ethylbenzene and m-xylene on multi-walled carbon nanotubes with different oxygen contents from aqueous solution10.1016/j.jhazmat.2011.06.048 ↗
23. Influence of the pore structure and surface chemistry on adsorption of ethylbenzene and xylene isomers by KOH-activated multi-walled carbon nanotubes10.1016/j.jhazmat.2012.07.059 ↗
24. Removal of malachite green from aqueous solution by ZeoliteIron oxide magnetic nanocomposite
25. Adsorptive removal of malachite green from aqueous solution using modified peanut shell10.1080/19443994.2012.761161 ↗
26. Removal of dyes using agricultural waste as low-cost adsorbents: a review10.1007/s13201-013-0117-y ↗
27. TiO2 nanoparticles for removal of malachite green dye from waste water10.4236/aces.2015.53039 ↗
28. Removal of malachite green dye from aqueous solution with adsorption technique using Limonia acidissima (wood apple) shell as low cost adsorbent
29. Study of the adsorption of methyl orange from aqueous solution using nickel oxide nanoparticles: equilibrium and kinetics studies
30. Adsorption kinetics and isotherms for the removal methyl orange from wastewaters using copper oxide catalyst prepared by the waste printed circuit boards
31. Adsorption of methyl orange onto chitosan from aqueous solution10.4236/jwarp.2010.210107 ↗
32. Adsorption of methyl orange onto protonated cross-linked chitosan10.1016/j.arabjc.2013.05.017 ↗
33. Facile preparation of mesoporous nickel oxide microspheres and their adsorption property for methyl orange from aqueous solution10.1016/j.mssp.2014.06.026 ↗