Preparation and photocatalytic activity of rare earth doped TiO2 nanoparticles

Štengl, Václav; Bakardjieva, Snejana; Murafa, Nataliya

doi:10.1016/j.matchemphys.2008.09.025

Cited by 513 publications

(246 citation statements)

References 43 publications

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“…Many methods have been employed to control the bulk crystal phases of TiO 2 [20][21][22][23]. It is known that the phase compositions of TiO 2 can be modified by preparation techniques, thermal treatments and through the metal ion doping method [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Zhang

Shi

Zhao

et al. 2013

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Zhang

Shi

Zhao

et al. 2013

Applied Surface Science

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“…Although there is some controversy, it seems that a mixture of anatase/rutile phases is desirable to get enhanced photoactivity [2,3]. Other methods to improve photoactivity include enlargement of surface area, loading of noble metal clusters [4], doping with appropriate elements [5,6], or using special morphologies such as hollow spheres [7,8]. As a photocatalyst, TiO 2 can be used in the form of powder and thin films [9].…”

Section: Introductionmentioning

confidence: 99%

Dispersion of mixtures of submicrometer and nanometre sized titanias to obtain porous bodies

Vicent

Sánchez

Molina

et al. 2013

Ceramics International

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The stability and rheological behaviour of bimodal titania suspensions was studied.Bimodal mixtures were prepared by mixing nanosized TiO 2 powders with an average primary size of ~20-40 nm and surface area of ~50 m 2 /g and/or a colloidal titania suspension of the same nanopowders dispersed in water with a submicrometer sized titania. The dispersing conditions were studied as a function of pH, type and content of dispersant, and sonication time for a constant solids content of 30 vol.% (62 wt%). The mixtures were slip cast and presintered at low temperatures (800−1000 ºC) in order to obtain porous materials with anatase as the major phase. The pore size distribution, microstructure and phase composition were characterised using MIP, SEM and XRD techniques, respectively.

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“…In this particular case the effect is presented at the microscopic level, causing a widening of the diffraction profile with respect to the original position of the standard pattern diffraction peaks [9][10]. The evaluation of the microtensions was carried out from the displacement of the crystalline plane (101) of the titania, because they suffer a variation in the interplanar distances caused by the internal residual forces, the results of the estimations are shown in the Fig.…”

Section: Nanoparticles Synthesismentioning

confidence: 99%

“…These defects present in the nanoparticles, especially cerium dioxide and titanium, increase the active surface area that favors the union of a large variety of ligands on its surface [8]. Although so far the use of nanoparticles of titania and ceria in the biomedical and therapeutic area has been carried out separately and not mixed [3][4][5][6][7], it is possible to hardness the power possessed by lanthanide ions with electronic configuration 4f, as cerium, which when entering the network of the titania acts as an electronic trap [9][10], which could increase the number of molecules captured on its surface, which will be extremely useful for increasing the binding of drugs in nanoparticles of titania and improve its efficiency as a nanocarrier.…”

Section: Introductionmentioning

confidence: 99%

Titania-Ceria surfactant assisted sol-gel synthesis and characterization

Torres-Romero¹,

Cajero-Juárez²,

Contreras-Garcı́a³

2017

Epitoanyag - JSBCM

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the nanoparticles of titanium dioxide are important in a wide range of applications such as catalysis, environmental remediation and solar energy conversion. While cerium oxide is rareearth oxide material used in the fields of photoluminescence, photosensitive material to uv radiation. Furthermore, research on the synthesis of nanoparticles of titanium dioxide has given rise to different methods such as sol-gel, in solid states, hydrothermal processes, among others. the process of solid state synthesis is most often used for the technical production of ceramic materials, while the sol-gel has gained much popularity in recent decades. Between these methods, microemulsion of reverse micelles technique, is one of the most versatile allowing control of particle properties such as size distribution, morphology and surface area. in this work, titania-ceria nanoparticles in anatase phase were synthesized by sol-gel method assisted by microemulsion reverse micelle using titanium butoxide and cerium nitrate hexahydrate as the precursors. the sample was thermally treated at 600 °c at a rate of 3 °c min-1. the residence time of the sample at this temperature was 2 hrs. tem and XrD analysis were used to characterize the samples obtained. According to the results, the obtained nanoparticles present spherical morphology and have a size distribution of 5 nm for ceo 2 , 9.5 for tio 2 and 14, 17 and 20 nm for the doped tio 2 with 5, 10 and 15% ceo 2 , respectively. the results indicate that the ceo 2 was incorporated into the network of titania.

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Preparation and photocatalytic activity of rare earth doped TiO2 nanoparticles

Cited by 513 publications

References 43 publications

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Dispersion of mixtures of submicrometer and nanometre sized titanias to obtain porous bodies

Titania-Ceria surfactant assisted sol-gel synthesis and characterization

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