Behavior of a hydrotalcite type material obtained from MgAl alloy for CO2 adsorption

Iturbe-García, José Luis; Martínezs, Juan Bonifacio; Granados-Correa, F.; López-Muñoz, Beatriz Eugenia

doi:10.1016/j.clay.2019.105296

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Figure 10 shows the differences between calcined and pre-calcined hydrotalcite. There are two prominent bands located at 1360 cm −1 and 3200–3600 cm −1 , which are assigned to the vibrations produced by the carbonate groups -CO 3 2– [ 40 , 41 ] and to the stretching between the oxygen and hydrogen of the hydroxyl group -OH [ 27 , 39 , 41 ], respectively. Other vibrations that can be located at 2850 and 2918 cm −1 are assigned to methylene CH 2 [ 42 ].…”

Section: Resultsmentioning

confidence: 99%

“…Due to the loss of the lamellar hydroxyl -OH groups, there is another drop in the range 172–279 °C. A final mass drop is seen in the range 275–605 °C, which can be attributed to the loss of CO 3 2− [ 40 , 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

“…2- [40,41] and to the stretching between the oxygen and hydrogen of the hydroxyl group -OH [27,39,41], respectively. Other vibrations that can be located at 2850 and 2918 cm −1 are assigned to methylene CH 2 [42].…”

Section: Fourier Transform Infrared Spectroscopy Ftir-atr Analysismentioning

confidence: 99%

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Complete Desorption of Hybrid Nanoclays Composed of Hydrotalcite and Disperse Dye

López-Rodríguez

Micó-Vicent

Jordán-Núñez

et al. 2023

IJMS

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Clays are considered great nanoadsorbents for many materials, including textile dyes. The use of these materials for cleaning textile wastewater is well known; however, it is not at all common to find applications for the hybrid materials formed from the clay and dye. In this work, a dye-loaded clay material was used to make new dye baths and colour a polyester textile substrate. The same hybrid could be used several times as it did not use all the adsorbed dye in a single dyeing. The hybrid obtained from hydrotalcite (nanoclay) and the dispersed red 1 dye was analysed by measuring the colour obtained, carrying out an X-ray diffraction analysis that provided information after each desorption–dyeing process, and using infrared spectroscopy to analyse the specific bands of each characteristic group. Both analyses showed that the amount of dye present in the hybrid decreases. Thermogravimetry (TGA), surface area and porosity measurements (BET), and X-ray photoelectron spectroscopy (XPS) tests were conducted. Chemical stability was assessed by subjecting the hybrid to the actions of different reagents. In addition, colour fastness tests were carried out after dyeing and washing the polyester test tubes to check for the correct fixing of the dye to the fibre. These fastness results showed that the dyeing was carried out correctly and as if it was a conventional dyeing process.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Complete Desorption of Hybrid Nanoclays Composed of Hydrotalcite and Disperse Dye

López-Rodríguez

Micó-Vicent

Jordán-Núñez

et al. 2023

IJMS

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“…The second loss corresponding to the range of 170–280 °C is attributed to the loss of lamellar OH groups. The third loss, recorded between 280 and 600 °C, can be assigned to the loss of carbonate ions and combustion of the molecule fragment [ 47 , 48 , 49 ]. When hydrotalcite is analyzed alone without having previously adsorbed any dye, there are peaks at 208, 297, and 411 °C.…”

Section: Resultsmentioning

confidence: 99%

The Optimal Concentration of Nanoclay Hydrotalcite for Recovery of Reactive and Direct Textile Colorants

López-Rodríguez

Micó-Vicent

Bonet-Aracil

et al. 2022

IJMS

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Concerns about the health of the planet have grown dramatically, and the dyeing sector of the textile industry is one of the most polluting of all industries. Nanoclays can clean dyeing wastewater using their adsorption capacities. In this study, as a new finding, it was possible to analyze and quantify the amount of metal ions substituted by anionic dyes when adsorbed, and to determine the optimal amount of nanoclay to be used to adsorb all the dye. The tests demonstrated the specific amount of nanoclay that must be used and how to optimize the subsequent processes of separation and processing of the nanoclay. Hydrotalcite was used as the adsorbent material. Direct dyes were used in this research. X-ray diffraction (XRD) patterns allowed the shape recovery of the hydrotalcite to be checked and confirmed the adsorption of the dyes. An FTIR analysis was used to check the presence of characteristic groups of the dyes in the resulting hybrids. The thermogravimetric (TGA) tests corroborated the dye adsorption and the thermal fastness improvement. Total solar reflectance (TSR) showed increased radiation protection for UV-VIS-NIR. Through the work carried out, it has been possible to establish the maximum adsorption point of hydrotalcite.

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“…The H3-type loops are usually given by non-rigid aggregates of plate-like particles and are generally found in other hydrotalcite-type materials. 32,33 The pore size evaluated by nonlocal density functional theory (NLDFT) is mainly distributed in the mesoporous range from 2.0 to 25.0 nm (Fig. 2d).…”

Section: Resultsmentioning

confidence: 99%

In situ ball-milling gram-scale preparation of polyoxoniobate-intercalated MgAl-layered double hydroxides for selective aldol and Michael addition cascade reactions

Zheng

Fan

Liu

et al. 2022

Inorg. Chem. Front.

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Behavior of a hydrotalcite type material obtained from MgAl alloy for CO2 adsorption

Cited by 11 publications

References 29 publications

Complete Desorption of Hybrid Nanoclays Composed of Hydrotalcite and Disperse Dye

Complete Desorption of Hybrid Nanoclays Composed of Hydrotalcite and Disperse Dye

The Optimal Concentration of Nanoclay Hydrotalcite for Recovery of Reactive and Direct Textile Colorants

In situ ball-milling gram-scale preparation of polyoxoniobate-intercalated MgAl-layered double hydroxides for selective aldol and Michael addition cascade reactions

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