Chemically modified kaolinite nanolayers for the removal of organic pollutants
Source abstract
Abstract
Abstract Modified kaolinite nanolayers were prepared from two-dimensional (2D) raw kaolin through a combination of calcination, acid leaching, and ultrasonic dispersion. The obtained nanolayers were subjected to effective modification with amino functional groups through grafting with (3-aminopropyl) triethoxysilane (APTES). The resultant materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy (EDS), scanning transmission electron microscopy (STEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The results revealed that the chemically modified materials exhibited increased specific surface area and pore structures, and chemical treatments showed obvious effects on the adsorption performance of kaolin. Owing to the protonation of the amino groups, the organic modified material exhibited excellent adsorption performance for Congo red and efficient regeneration. The chemically modified kaolinite nanolayers show significant potential applications in the fields of adsorption, separation, catalysis, and other environmental remediation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Clay minerals and soil interactions · Carbon and Quantum Dots Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (51)
Show source-provided references
1. Adsorption of Congo red from aqueous solution onto calcium-rich fly ash10.1016/j.jcis.2004.03.019 ↗
2. Molecular structure of 3-aminopropyltriethoxysilane layers formed on silanol-terminated silicon surfaces10.1021/jp212056s ↗
3. Adsorptive removal of Congo red, a carcinogenic textile dye, from aqueous solutions by maghemite nanoparticles10.1016/j.jhazmat.2009.09.066 ↗
4. Removal of fine quartz from coal-series kaolin by flotation10.1016/j.clay.2017.04.020 ↗
5. Equilibrium and kinetic data and process design for adsorption of Congo Red onto bentonite10.1016/j.jhazmat.2007.10.071 ↗
6. Adsorption of Congo red by chitosan hydrogel beads impregnated with carbon nanotubes10.1016/j.biortech.2009.10.051 ↗
7. Removal of azo dyes from water by combined techniques of adsorption, desorption, and electrolysis based on a supramolecular sorbent10.1021/ie300916d ↗
8. Functionalization of SBA-15 with APTES and characterization of functionalized materials10.1021/jp035877+ ↗
9. Non-conventional low-cost adsorbents for dye removal: a review10.1016/j.biortech.2005.05.001 ↗
10. Adsorptive removal of malachite green and Rhodamine B dyes on Fe3O4/activated carbon composite
11. Highly enhanced adsorption of Congo red onto graphene oxide/chitosan fibers by wet-chemical etching off silica nanoparticles10.1016/j.cej.2014.02.006 ↗
12. Farmer · 1974
13. Adsorption characteristics of Congo red from aqueous solution onto tea waste10.1080/00986445.2013.836633 ↗
14. Mechanochemical treatment of kaolinite10.1006/jcis.2001.7591 ↗
15. Gates · 2017
16. Adsorption of methylene blue on kaolinite10.1016/S0169-1317(01)00081-3 ↗
17. Chemically modified sepiolite fibers for reinforcing resin brake composites. Mater10.1166/mex.2017.1355 ↗
18. Tin oxide-carbon coated sepiolite nanofibers with enhanced lithium-ion storage property10.1186/s11671-017-1979-y ↗
19. Insight into the physicochemical aspects of kaolins with different morphologies10.1016/j.clay.2012.10.003 ↗
20. Accelerated decolorization of azo dye Congo red in a combined bioanode–biocathode bioelectrochemical system with modified electrodes deployment10.1016/j.biortech.2013.10.027 ↗
21. Adsorption properties of Congo Red from aqueous solution onto surfactant-modified montmorillonite10.1016/j.jhazmat.2008.02.104 ↗
22. Kaolinite stabilized paraffin composite phase change materials for thermal energy storage10.1016/j.clay.2015.07.033 ↗
23. Assessment of pozzolanic activity of calcined coal-series kaolin10.1016/j.clay.2017.03.038 ↗
24. Hierarchical nano-activated silica nanosheets for thermal energy storage10.1016/j.solmat.2017.04.009 ↗
25. Emerging nanoclay composite for effective hemostasis
26. Fe2O3 nanoparticles anchored on 2D kaolinite with enhanced antibacterial activity10.1039/C7CC02905E ↗
27. Biodegradation of the diazo dye Reactive Black 5 by a wild isolate of Candida oleophila10.1016/j.enzmictec.2005.09.004 ↗
28. Mechanism of adsorption of anionic dye from aqueous solutions onto organobentonite10.1016/j.jhazmat.2010.12.073 ↗
29. Modeling of structure H hydrates using a Langmuir adsorption model10.1021/ie990677z ↗
30. Progress of porous silicon APTES-functionalization by FTIR investigations10.1016/j.apsusc.2015.01.107 ↗
31. Surface modification of mechanochemically activated kaolinites by selective leaching10.1016/j.jcis.2005.07.033 ↗
32. Evaluation of adsorption characteristics of an anionic azo dye Brilliant Yellow onto hen feathers in aqueous solutions10.1007/s11356-012-0756-9 ↗
33. Adsorption characteristics of brilliant green dye on kaolin10.1016/j.jhazmat.2008.03.110 ↗
34. Carbon hybridized montmorillonite nanosheets: preparation, structural evolution and enhanced adsorption performance10.1039/C7CC02334K ↗
35. Removal of Congo red using activated carbon and its regeneration10.1016/j.jhazmat.2006.11.021 ↗
36. Nanostructured natural zeolite: surface area, meso-pore and volume distribution, and morphology10.1080/00103624.2014.956934 ↗
37. Preparation of efficient, stable and reusable laccase-Cu3(PO4)2 hybrid microspheres based on copper foil for decolouration of Congo red10.1021/acssuschemeng.7b00820 ↗
38. Rouquerol · 1999
39. Bioaccumulation of reactive dyes by thermophilic cyanobacteria10.1016/j.procbio.2005.10.031 ↗
40. Characterization, beneficiation and utilization of a kaolinite clay from Assam, India10.1016/S0169-1317(03)00151-0 ↗
41. Alteration of non-swelling clay minerals and magadiite by acid activation10.1016/j.clay.2009.02.001 ↗
42. Graphical evaluation of the favorability of adsorption processes by using conditional Langmuir constant10.1021/ie401571p ↗
43. Studies on the removal of rhodamine B and malachite green from aqueous solutions by activated carbon10.1155/2008/271615 ↗
44. Intumescent multilayer hybrid coating for flame retardant cotton fabrics based on layer-by-layer assembly and sol-gel process10.1039/C4RA14943B ↗
45. Fabrication of hybrid magnetic HKUST-1 and its high efficient adsorption performance for Congo red dye10.1039/C5RA00384A ↗
46. Functionalized 2D clay derivative: hybrid nanosheets with unique lead sorption behaviors and interface structure
47. In situ loading of highly-dispersed CuO nanoparticles on hydroxyl-group-rich SiO2-AlOOH composite nanosheets for CO catalytic oxidation10.1016/j.cej.2017.02.043 ↗
48. Amino-functionalized hierarchical porous SiO2-AlOOH composite nanosheets with enhanced adsorption performance10.1016/j.jhazmat.2017.11.058 ↗
49. Green assembly of stable and uniform silver nanoparticles on 2D silica nanosheets for catalytic reduction of 4-nitrophenol10.1016/j.apcatb.2017.12.040 ↗
50. Removal of Congo red dye from aqueous solution with nickel-based metal-organic framework/graphene oxide composites prepared by ultrasonic wave-assisted ball milling10.1016/j.ultsonch.2017.06.013 ↗
51. Effect of intercalation agents on morphology of exfoliated kaolinite10.3390/min7120249 ↗