Evaluation of hydrotalcite-like compounds with distinct interlaminar anions as catalyst precursors in methylene blue photodegradation
Source abstract
Abstract
Abstract In this work, two hydrotalcite like-compounds with nitrate and acetate as interlaminar anions (uncalcined and calcined) were evaluated as catalysts in the photodegradation of methylene blue (MB) under visible light irradiation. Materials were characterized by X-ray powder diffraction (XRD), thermogravimetric analysis, Scanning Electron Microscopy and Diffuse Reflectance Spectroscopy. The XRD analysis of the pristine compounds demonstrated that they exhibited the characteristic reflections of hydrotalcite-like compounds as the main crystalline phase. The analysis of the ( 003 ) reflection confirmed nitrate or acetate presence in the interlaminar region. However, after annealing spinel and MgO obtaining at 350 °C was evidenced in both materials. Major absorbance intensity in the visible region was observed in the acetate-containing samples and the highest MB decomposition was achieved with the acetate precursor sample calcined at 450 °C. The photocatalytic activity was attributed to a synergy between the crystalline phases, specific surface area and the band gap energy.
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Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Magnesium Oxide Properties and Applications · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Layered double hydroxides
2. The intercalation of carboxylic acids into layered double hydroxides: a critical evaluation and review of the different methods10.1016/S0167-2738(96)00619-4 ↗
3. Hydrotalcite-type anionic clays: preparation, properties and applications10.1016/0920-5861(91)80068-K ↗
4. Concomitant synthesis of highly crystalline Zn–Al layered double hydroxide and ZnO: phase interconversion and enhanced photocatalytic activity10.1016/j.jcis.2011.09.081 ↗
5. Structural aspects of layered double hydroxides
6. Thermal study of low-grade magnesium hydroxide used as fire retardant and in passive fire protection10.1016/j.tca.2010.12.018 ↗
7. Mixed magnesium-aluminium hydroxides I. Preparation and characterization of compounds formed in dialysed systems10.1180/claymin.1967.007.2.05 ↗
8. CdS/TiO2 composite films for methylene blue photodecomposition under visible light irradiation and non-photocorrosion of cadmium sulfide10.2478/s11696-013-0514-6 ↗
9. Characterization of repeatedly reconstructed Mg-Al hydrotalcite-like compounds: gradual segregation of aluminum from the structure10.1021/cm980478q ↗
10. Novel visible light driven Mg-Zn-In ternary layered materials for photocatalytic degradation of methylene blue10.1016/j.cattod.2012.08.026 ↗
11. Adsorption of methylene blue onto spinel magnesium aluminate nanoparticles: adsorption isotherms, kinetic and thermodynamic studies10.1016/j.cej.2013.01.034 ↗
12. Photodegradation of sodium naproxen and oxytetracycline hydrochloride in aqueous medium using as photocatalysts Mg-Al calcined hydrotalcites10.1016/j.jphotochem.2013.12.014 ↗
13. Thermal degradation of acetate-intercalated hydroxy double and layered hydroxy salts10.1021/ic060071k ↗
14. Photooxidation of iodide ion on some semiconductor and non-semiconductor surfaces10.1016/j.catcom.2004.03.002 ↗
15. Photodegradation of Rhodamine B in presence of CaO and NiO-CaO catalysts10.1155/2012/398230 ↗
16. Solution combustion synthesis and visible light-induced photocatalytic activity of mixed amorphous and crystalline MgAl2O4 nanopowders10.1016/j.cej.2011.08.043 ↗
17. Experimental and theoretical investigation into the elimination of organic pollutants from solution by layered double hydroxides10.1016/j.apcatb.2013.04.008 ↗
18. A comparative study on photocatalytic degradation of violet GL2B azo dye using CaO and TiO2 nanoparticles
19. Reversible hydration and aqueous exfoliation of the acetate-intercalated layered double hydroxide of Ni and Al: observation of an ordered interstratified phase10.1016/j.jssc.2012.06.017 ↗
20. Photodegradation of 2,4-dichlorophenoxyacetic acid using ZnAlFe layered double hydroxides as photocatalysts10.1016/j.cattod.2009.02.036 ↗
21. Photocatalytic degradation of 2,4-dichlorophenol with MgAlTi mixed oxides catalysts obtained from layered double hydroxides10.1016/j.jhazmat.2013.09.047 ↗
22. The syntheses of hydrotalcite-like compounds and their structures and physico-chemical properties I: the systems Mg2+-Al3+-NO3−, Mg2+-Al3+-Cl−, Mg2+-Al3+-ClO4−, Ni2+-Al3+-Cl− and Zn2+-Al3+-Cl−10.1346/CCMN.1975.0230508 ↗
23. A novel synthetic route for magnesium aluminate (MgAl2O4) nanoparticles using sol–gel auto combustion method and their photocatalytic properties10.1016/j.saa.2014.04.040 ↗
24. Colour centres at the surface af alkali-earth oxides. A new hypothesis on the location of surface electron traps10.1016/S0039-6028(98)00795-X ↗
25. Carbonate intercalated Zn/Fe layered double hydroxide: a novel photocatalyst for the enhanced photo degradation of azo dyes10.1016/j.cej.2011.10.070 ↗
26. Layered hydroxide metal acetates (metal=zinc, cobalt, and nickel): elaboration via hydrolysis in polyol medium and comparative study10.1021/cm991179j ↗
27. Rouquerol · 1999
28. Synthesis, characterization and photocatalytic activity of mixed oxides derived from ZnAlTi ternary layered double hydroxides10.1016/j.jpcs.2013.04.002 ↗
29. MgZnAl hydrotalcite-like compounds preparation by a green method: effect of zinc content10.2478/s11696-013-0491-9 ↗
30. Evaluation of the mixed oxides produced from hydrotalcite-like compound's thermal treatment in arsenic uptake10.1016/j.clay.2015.12.010 ↗
31. Preparation and visible light photocatalytic activity of Bi2O3/CaO photocatalysts
32. Immobilized Cu-Cr layered double hydroxide films with visible-light responsive photocatalysis for organic pollutants10.1016/j.cej.2012.01.070 ↗
33. Hydroxylated sol–gel Al2O3 as photocatalyst for the degradation of phenolic compounds in presence of UV light10.1016/j.cattod.2013.10.027 ↗
34. Enhanced photoactivity for the phenol mineralization on ZnAlLa mixed oxides prepared from calcined LDHs10.1016/j.cattod.2013.07.014 ↗
35. Layered double hydroxides in water decontamination
36. A simple environmentally friendly method to prepare versatile hydrotalcite-like compounds10.1021/cm7031306 ↗
37. Adsorption and photocatalytic degradation of phenol and 2,4 dichlorophenoxiacetic acid by Mg–Zn–Al layered double hydroxides10.1016/j.apcatb.2009.03.019 ↗
38. Method for large-scale production of multimetallic layered double hydroxides: formation mechanism discernment10.1021/cm902377p ↗
39. Cationic and anionic vacancies in the crystalline phases of sol-gel magnesia-alumina catalysts10.1021/cm9805471 ↗
40. Abrupt structural transformation in hydrotalcite-like compounds Mg1-xAlx(OH)2(NO3)x∙nH2O as a continuous function of nitrate anions10.1021/jp0029257 ↗
41. Water content and particle texture of synthetic hydrotalcite-like layered double hydroxides10.1021/cm00050a017 ↗
42. Gel-combustion synthesis of nanocrystalline spinel catalysts for VOCs elimination10.1016/j.apcatb.2008.02.015 ↗
43. A new nano-sized calcium hydroxide photocatalytic material for the photodegradation of organic dyes10.1039/C4RA00081A ↗