Preformed sol-gel synthesis and characterization of YAlO<sub>3</sub>

Tanner, Peter A.; Law, Po‐Tak; Wong, Ka‐Leung; Fu, Lianshe

doi:10.1023/b:jmsc.0000004405.52574.37

Cited by 45 publications

(12 citation statements)

References 11 publications

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“…:YAlO 3 samples were prepared by the nitrate-citric acid method described elsewhere (Tanner et al 2003). The Er 0.01 Y 0.99 AlO 3 was adopted as the ULA in this work.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

et al. 2008

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In this work, Er 3? :YAlO 3 /TiO 2 composite was synthesized by a ultrasonic dispersion and liquid boil method. The Er 3? :YAlO 3 /TiO 2 composite and pure TiO 2 powder were characterized by XRD. The degradation of different organic dyes was used to evaluate the photocatalytic activity of the Er 3? :YAlO 3 /TiO 2 composite. It is found that the photocatalytic activity of Er 3? :YAlO 3 /TiO 2 composite is much higher than that for the similar system with only TiO 2 . Moreover, this Er 3? :YAlO 3 /TiO 2 composite provides a new way to take advantage of TiO 2 in sewage treatment aspects using solar light.

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“…:YAlO 3 samples were prepared by the nitrate-citric acid method described elsewhere (Tanner et al 2003). The Er 0.01 Y 0.99 AlO 3 was adopted as the ULA in this work.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

et al. 2008

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“…:YAlO 3 which had been described before [21]. YAlO 3 has a gadolinium orthoferrite structure with the orthorhombic space group D 16 2h , and the Er 3?…”

Section: Preparation Of Er 3? :Yalo 3 Upconversionmentioning

confidence: 97%

Photocatalytic Degradation of Organic Dyes by a High Efficient TiO2-Based Catalysts Under Solar Light Irradiation

Wang

Zhang

et al. 2009

Catal Lett

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“…Anticipating that nanostructuring will enable a prosperous future development of optical devices, characterised by high brightness, reliability, low power consumption, and a long life of phosphor materials, various efficient wet-chemical synthesis routes have been developed, including sol-gel, [14] combustion processing, [15,16] co-precipitation methods, [17] hydrothermal synthesis, [18,19] and so on.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cerium‐Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route

et al. 2012

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Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal‐treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy‐dispersive X‐ray spectroscopy (SEM/EDS) and by high‐resolution transmission electron microscopy (HR‐TEM). The structural refinement was based on the phase identification performed by X‐ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non‐agglomerated particles with well‐developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat‐treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.

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Preformed sol-gel synthesis and characterization of YAlO₃

Cited by 45 publications

References 11 publications

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Photocatalytic Degradation of Organic Dyes by a High Efficient TiO2-Based Catalysts Under Solar Light Irradiation

Synthesis of Cerium‐Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route

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Preformed sol-gel synthesis and characterization of YAlO3

Cited by 45 publications

References 11 publications

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Photocatalytic Degradation of Organic Dyes by a High Efficient TiO2-Based Catalysts Under Solar Light Irradiation

Synthesis of Cerium‐Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route

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Preformed sol-gel synthesis and characterization of YAlO₃