Influence of calcination temperature on anatase to rutile phase transformation in TiO2 nanoparticles synthesized by the modified sol–gel method

Wetchakun, Natda; Incessungvorn, Burapat; Wetchakun, Khatcharin; Phanichphant, Sukon

doi:10.1016/j.matlet.2012.05.092

Cited by 177 publications

(94 citation statements)

References 25 publications

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“…Typical XRD spe of rutile structure at high tem 500 o C [7,[9][10][11]. However, a tra the current research at very low which is in good agreement wi al., [12]. They studied the effec phase transformation in TiO 2 na gel method.…”

Section: Methodsmentioning

confidence: 99%

Effects of annealing temperature on current-voltage characteristics of TiO<inf>2</inf> thin film by sol-gel process on silicon substrate for biosensor application

Nadzirah

Hashim

2013

RSM 2013 IEEE Regional Symposium on Micro and Nanoelectronics

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TiO 2 thin film was deposited on a silicon dioxide substrate using a sol-gel method and the film was annealed at 300, 500 and 700 o C. Aluminum interdigitated electrodes were fabricated on the deposited TiO 2 thin film via simple lithography method. The influence of thermal annealing towards the morphological and electrical properties were studied. X-ray diffraction (XRD) shows that crystalline rutile structure growth at very low temperature whereas field emission electron microscopy (FESEM) exhibits nanoparticles with an average 21 mm in size. The current flows between the fabricated interdigitated electrodes were extremely small at -5 to 5 V applied which were decreased as the annealing temperature increases with average barrier height was 0.8 eV.

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Section: Methodsmentioning

confidence: 99%

Effects of annealing temperature on current-voltage characteristics of TiO<inf>2</inf> thin film by sol-gel process on silicon substrate for biosensor application

Nadzirah

Hashim

2013

RSM 2013 IEEE Regional Symposium on Micro and Nanoelectronics

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“…The oxygen vacancies seem to occur in association with most dopant insertion, and their concentrations are very sensitive to heat treatments. In addition to the lattice distortions and the changes in cation gap states caused by doping process, the oxygen vacancies also act as hole-trapping sites [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Structural Aspects of Anatase to Rutile Phase Transition in Titanium Dioxide Powders Elucidated by the Rietveld Method

Cavalheiro¹,

Oliveira²,

Santos³

2017

Titanium Dioxide

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Titanium dioxide has attracted much attention since a long time ago due to its versatility as advanced material. However, its performance as semiconductor devices is very much dependent on the predominant crystalline phase and defect concentrations, which can be adjusted through the synthesis methods, thermal treatments and doping processes. In this work, an accurate structural characterization of titanium dioxide was used by X-ray diffractometry supported by rietveld refinement and thermal analysis. The insertion of 5 mol% of zirconium silicate was able to stabilize anatase up to 900 C, permitting the oxygen vacancies to be significantly eliminated. It was demonstrated also that the changes in the isotropic thermal parameters for oxygen are related to reconstructive transformation necessary to promote the anatase-to-rutile phase transition. Independently of doping process, the crystallization process of anatase phase as a function of temperature increasing occurs exclusively due the reduction of lattice microstrain up to 600 C. However, above 650 C, that crystallization process becomes dependent of the increasing in crystallite size. The anatase crystallite growth event was only possible when the titanium dioxide was doped with zirconium silicate. Otherwise, the rutile phase amount starts to rise continually. Thus, there are optimistic expectations for that new composition to be a new semiconductor matrix for additional doping processes.

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“…Titanium dioxide has been widely investigated because of its potential applications in photoelectrochemistry and photocatalysis, such as sensors [1], environmental applications [2], solar energy conversion [3], and photochromic devices [4]. TiO 2 occurs mainly in three different polymorphs-anatase, rutile, and brookite.…”

Section: Introductionmentioning

confidence: 99%

“…Zheng et al [21] prepared rutile-anatase composite TiO 2 nanoparticles via an IL-assisted method by hydrolyzing of titanium tetrachloride in hydrochloric acid. Al-Salman et al [22] reported on the room-temperature template synthesis of Si x Ge 1−x nanowires by potentiostatic electrochemical deposition from the air and waterstable ionic liquids 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide, [Py 1,4 ] than those prepared with [Py 1,4 ]Tf 2 N under the same parameters and reaction conditions. Compared with conventional methods, the cold plasma method is an environmentally friendly, simple, and energy-efficient method for preparing nanomaterials [23,24].…”

Section: Introductionmentioning

confidence: 99%

Atmospheric-pressure cold plasma for fabrication of anatase–rutile mixed TiO2 with the assistance of ionic liquid

Zhang

et al. 2015

Catalysis Today

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Influence of calcination temperature on anatase to rutile phase transformation in TiO2 nanoparticles synthesized by the modified sol–gel method

Cited by 177 publications

References 25 publications

Effects of annealing temperature on current-voltage characteristics of TiO<inf>2</inf> thin film by sol-gel process on silicon substrate for biosensor application

Effects of annealing temperature on current-voltage characteristics of TiO<inf>2</inf> thin film by sol-gel process on silicon substrate for biosensor application

Structural Aspects of Anatase to Rutile Phase Transition in Titanium Dioxide Powders Elucidated by the Rietveld Method

Atmospheric-pressure cold plasma for fabrication of anatase–rutile mixed TiO2 with the assistance of ionic liquid

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