Synthesis of aluminophosphate by the ionothermal method using factorial design

Carvalho, Marcella Montorio; Ruotolo, Luís A.M.; Felisbino, Romilda Fernandez

doi:10.1016/j.micromeso.2012.08.020

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…The Morris group at the University of St Andrews, U.K., is currently the main group of researchers working on ionothermal synthesis reactions, and in 2007 Parnham and Morris published a review of the early work carried out on the subject . Recent publications using ionothermal synthesis have reported the formation of aluminum phosphate, , cobalt aluminophosphate, − zirconium phosphates, − propylene diammonium gallium phosphate, zinc phosphate, − zinc and cobalt metal phosphites, and organic–inorganic hybrid materials. − Also reported are a novel cobalt phosphate–borate compound for use as nonlinear optic materials, lanthanide , or nickel metal organic frameworks for the ultrafast formation of ZnO mesocrystals, reduced graphene oxide, and hierarchical porous carbon monoliths …”

Section: Synthesis Applicationsmentioning

confidence: 99%

Deep Eutectic Solvents (DESs) and Their Applications

2014

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Section: Synthesis Applicationsmentioning

confidence: 99%

Deep Eutectic Solvents (DESs) and Their Applications

2014

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“…Therefore, the design of experiments (DOE) can be used. This approach largely applied in natural sciences and engineering has been only recently explored in the synthesis of inorganic materials such as zeolite, aluminophosphate and glass (Carvalho et al, 2013;Cichocki and Kościelniak, 1999;Ji et al, 2014;Katovic et al, 2001;Zhang et al, 2009). This approach has allowed to eliminate insignificant parameters and reveal the most significant ones, which influence material properties such as crystallinity, ion exchange capacity and solubility of the product.…”

Section: Introductionmentioning

confidence: 99%

Iron-rich clay mineral synthesis using design of experiments approach

Boumaïza

Dutournié

Meins

et al. 2020

Applied Clay Science

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The precipitation of iron-rich clay minerals has been reported in various geologic environments.However, large quantities of these minerals are not widely accessible to study their thermodynamic properties and thus improve our understanding of these particular geological systems. To obtain sufficient amount of iron-rich minerals, their synthesis can be foreseen. A design of experiments and surface response methodology was used in this study to find optimum synthesis conditions for these clay minerals. Three parameters were considered: quantity of OH -, synthesis time and temperature. The quantity of OHhad the largest influence on the synthesis result. The amount of 2:1 type clay mineral with respect to 1:1 type clay mineral increased with OH/Fe molar ratio. Time and temperature had less significant impact on the synthesis outcome, yet the formation of 2:1 type phase was favored at short synthesis time (1 day) and high temperature (160°C). The findings suggested that the kinetic of 2:1 type clay 2 mineral phase formation with respect to 1:1 type phase was faster, yet the precipitation was strongly dependent on the availability of the reactants.

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“…26 In our research group, an EU has been used simultaneously as solvent and template to synthesize aluminophosphates that have superior adsorption capacity. 27,28 The aim of this work was to demonstrate that the ionothermal synthesis using a low cost eutectic mixture can be used to prepare nitrogen-doped TiO 2 with photocatalytic activity in the visible light. In this approach, the EU enabled simultaneous nanostructuring and doping of the TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity and RNO Dye Degradation of Nitrogen-doped TiO2 Prepared by Ionothermal Synthesis

2017

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This work concerns the preparation a nitrogen-doped TiO 2 by ionothermal synthesis methods and the photocatalytic studies. In this procedure, alkoxide was used as a titanium source, and a deep eutectic mixture of choline chloride and urea (molar ratio 1:2) served as a solvent and source of nitrogen. Different samples were synthesized varying the percentages of the eutectic mixture, titanium butoxide, and water, as well as temperature and reaction time. The catalysts were characterized by X-ray diffraction, Raman spectrometry, scanning electron microscopy, and diffuse reflectance spectroscopy. N-doping was confirmed by X-ray photoelectron spectroscopy. The photocatalytic activity of the N-TiO 2 nanoparticles was evaluated in the oxidation of N,N-dimethyl-4-nitrosoaniline (RNO) dye. The best photocatalytic activity under illumination by UV and visible light was found for the catalysts prepared under reflux in the presence of water, and for the catalysts prepared hydrothermally using intermediate percentages of the nitrogen source (the eutectic mixture).

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Synthesis of aluminophosphate by the ionothermal method using factorial design

Cited by 10 publications

References 22 publications

Deep Eutectic Solvents (DESs) and Their Applications

Deep Eutectic Solvents (DESs) and Their Applications

Iron-rich clay mineral synthesis using design of experiments approach

Photocatalytic Activity and RNO Dye Degradation of Nitrogen-doped TiO2 Prepared by Ionothermal Synthesis

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