Preparation, phase transformation and photocatalytic activities of cerium-doped mesoporous titania nanoparticles

Xiao, Jiangrong; Peng, Tianyou; Li, Ran; Peng, Zhenghe; Yan, Chun‐Hua

doi:10.1016/j.jssc.2006.01.008

Cited by 156 publications

(85 citation statements)

References 54 publications

(102 reference statements)

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“…5b, a nanoparticle with an approximate size of 22 nm is observed, in which an interplanar distance of approximately 2.48 Å, corresponding to the plane (101) of the tetragonal cubic structure of TiO 2 . This reinforces the observations in the diffraction patterns, which suggests the incorporation of CeO 2 in the TiO 2 network [16][17][18]. Fig.…”

Section: Nanoparticles Synthesissupporting

confidence: 89%

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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Section: Nanoparticles Synthesissupporting

confidence: 89%

Titania-Ceria surfactant assisted sol-gel synthesis and characterization

Torres-Romero¹,

Cajero-Juárez²,

Contreras-Garcı́a³

2017

Epitoanyag - JSBCM

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“…The addition of vanadium (V) increases the surface area and porosity of TiO 2 [62]. The advantages of Ce as dopants include (1) decrease of the rate of crystallite growth, (2) promotion of mesoporous materials formation, (3) promotion of the stability of the active phase, (4) prevention of thermal loss in the catalyst area [63], and (5) prevention of the phase transformation of the anatase to the rutile phase [63].…”

Section: Effect Of Metal Dopingmentioning

confidence: 99%

“…The specific surface area of TiO 2 is in the region of 100-500 m 2 /g [49,50,[52][53][54][55][56][57][58][59][60][62][63][64][65][66]. Table 1 which summarizes the dopants used in TiO 2 formation shows that different dopants are responsible for different structural properties of the TiO 2 .…”

Section: Effect Of Metal Dopingmentioning

confidence: 99%

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An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Tan

Wong

Mohamed

2011

ISRN Materials Science

112

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This paper aims to review and summarize the recent works on the photocatalytic degradation of various organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. In this regard, three main aspects are examined: (a) the presence of various dopants (metal dopants, nonmetal dopants, halogen dopants, metalloid dopants, and codopants) in the formation of nano-doped-TiO 2 photocatalysts, (b) the effect of the presence of dopants on the photocatalytic degradation of organic pollutants, and (c) the effects of various operating parameters on the photocatalytic degradation of organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. Reports resulted suggest that the formation of a high percentage of the anatase phase, small crystallite size, and high specific surface area of the nano-doped-TiO 2 photocatalysts depends on the presence of various dopants in the photocatalysts. The majority of the dopants have the potential to improve the photocatalytic efficiency of nano-doped-TiO 2 in the degradation of organic pollutants. The photocatalytic degradation of organic compounds depends on the calcination temperature of the prepared doped TiO 2 , initial reactant concentration, dosage of doped TiO 2 , and dopant doping concentration.

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“…This high photocatalytic activity is related to the large surface area, as well as the high density of active sites for combining with organic compounds induced by the lanthanum ions in the MSN framework. Following the same strategy, these authors also prepared cerium-doped MTNs [58] and observed an increase in surface area and thermal stability. However, while the cerium-doped MTNs exhibited a higher photocatalytic activity than P25, the maximum degradation rate of Rhodamine B was obtained with the undoped sample.…”

Section: Photocatalysismentioning

confidence: 96%

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Vivero‐Escoto

Chiang

et al. 2012

Science and Technology of Advanced Materials

184

111

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This review article summarizes recent developments in mesoporous titania materials, particularly in the fields of morphology control and applications. We first briefly introduce the history of mesoporous titania materials and then review several synthesis approaches. Currently, mesoporous titania nanoparticles (MTNs) have attracted much attention in various fields, such as medicine, catalysis, separation and optics. Compared with bulk mesoporous titania materials, which are above a micrometer in size, nanometer-sized MTNs have additional properties, such as fast mass transport, strong adhesion to substrates and good dispersion in solution. However, it has generally been known that the successful synthesis of MTNs is very difficult owing to the rapid hydrolysis of titanium-containing precursors and the crystallization of titania upon thermal treatment. Finally, we review four emerging fields including photocatalysis, photovoltaic devices, sensing and biomedical applications of mesoporous titania materials. Because of its high surface area, controlled porous structure, suitable morphology and semiconducting behavior, mesoporous titania is expected to be used in innovative applications.

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Preparation, phase transformation and photocatalytic activities of cerium-doped mesoporous titania nanoparticles

Cited by 156 publications

References 54 publications

Titania-Ceria surfactant assisted sol-gel synthesis and characterization

Titania-Ceria surfactant assisted sol-gel synthesis and characterization

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

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