Effect of brookite phase on the anatase–rutile transition in titania nanoparticles

Hu, Yi; Tsai, Huan‐Liang; Huang, Ching-Shung

doi:10.1016/s0955-2219(02)00194-2

Cited by 298 publications

(127 citation statements)

References 19 publications

Supporting

Mentioning

106

Contrasting

Unclassified

Order By: Relevance

“…The arrangement of these octahedra gives rise to three different polymorphs of titanium dioxide; anatase, rutile and brookite. Rutile is the thermodynamically stable form [13], while anatase and brookite are both metastable. Anatase and rutile are the most widely investigated polymorphs, with anatase being reported as the most photocatalytically active of the three [3,14,15].…”

Section: Introductionmentioning

confidence: 99%

Effect of N-doping on the photocatalytic activity of sol–gel TiO2

Nolan

Synnott

Seery³

et al. 2012

Journal of Hazardous Materials

194

107

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Effect of N-doping on the photocatalytic activity of sol–gel TiO2

Nolan

Synnott

Seery³

et al. 2012

Journal of Hazardous Materials

194

107

View full text Add to dashboard Cite

“…The result illustrates that CTAB template not only induces the formation of small and uniform anatase crystallites but also generates crystalline brookite. In general, the anatase-to-rutile phase transformation depends on several factors including the size of anatase crystallites, the existence of brookite phase, and the packing of titania nanocrystals [23][24][25][26] . It is expected that the loose packing here has a predominant influence, and therefore inhibits the transformation from anatase to rutile phases.…”

Section: Resultsmentioning

confidence: 99%

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Loryuenyong¹,

Angamnuaysiri²,

Sukcharoenpong³

et al. 2012

ScienceAsia

View full text Add to dashboard Cite

In this study, titania nanoparticles were successfully prepared by a sol-gel template method, employing cetyltrimethylammonium bromide (CTAB) and CaCO3 nanoparticles as templates. Titanium(IV) tetraisopropoxide and ethanol were used as a titanium precursor and alcoholic solvent, respectively. The obtained nanosized-titania was characterized by X-ray diffraction, transmission-electron microscopy, and N2 adsorption and desorption methods. The photocatalytic activity of titania was investigated from the photodegradation of methylene blue solution under UVC irradiation. The results indicated that the amount of anatase crystallites and pore characteristics were important factors influencing the degree of photocatalysis of titania nanoparticles. Highly crystalline anatase titania could be obtained through the controlled hydrolysis reaction rate and the formation of loose-packed titania nanoparticles, while high specific surface area could be achieved with a template method.

show abstract

“…There are four different polymorphs of TiO 2 found in nature such as anatase (tetragonal), rutile (tetragonal), brookite (orthorhombic), and TiO 2 (B) (monoclinic) [6], the most important of which are anatase and rutile. With calcination at high temperatures exceeding ~600°C, the brookite and anatase polymorphs will transform into the thermodynamically stable rutile polymorph [5].…”

Section: General Structure and Properties Of Tiomentioning

confidence: 99%

“…The blue TiO 2 nanomaterial contains Ti 3+ with an abundant oxygen vacancy, which can absorb visible and infrared light as well as UV light, producing more electrons and holes and also facilitating better electrical conductivity than pristine TiO 2 [5]. In the future, we would like to further address the beneficial applications in clean energy storage media and protecting the environment, including the hydrogen evolution reaction, carbon dioxide reduction, and degradation of pollutants by using noble blue TiO 2 under visible light.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Blue TiO2 for Visible-Light-Driven Photocatalysis

Yu¹,

Nguyen²,

Lee³

2018

Titanium Dioxide - Material for a Sustainable Environment

View full text Add to dashboard Cite

Titanium dioxide (TiO 2 ), which is regarded as a semiconductor photocatalyst, has drawn attention in the applications of photocatalysis, including hydrogen evolution reaction, carbon dioxide reduction, pollutant degradation, and biocatalytic or dye-sensitized solar cells due to its low toxicity, superior photocatalytic activity, and good chemical stability. However, there are still some disadvantages such as too large energy bandgap (~3.34 eV and ~3.01 eV for anatase and rutile phases, respectively) in the absorbance of all ranges of lights, which limits the photoelectrochemical performance of TiO 2 . Herein, we like to introduce photocatalytic blue TiO 2 that is obtained by the reduction of TiO 2 . The blue TiO 2 consists of Ti 3+ state with high oxygen defect density that can absorb the visible and infrared as well as ultraviolet light due to its low energy bandgap, leading to enhance a photocatalytic activity. This chapter covers the structure and properties of blue TiO 2 , its possible applications in visible-light-driven photocatalysis, and mainly various synthetic methods even including phase-selective room-temperature solution process under atmospheric pressure.

show abstract

Effect of brookite phase on the anatase–rutile transition in titania nanoparticles

Cited by 298 publications

References 19 publications

Effect of N-doping on the photocatalytic activity of sol–gel TiO2

Effect of N-doping on the photocatalytic activity of sol–gel TiO2

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Preparation of Blue TiO2 for Visible-Light-Driven Photocatalysis

Contact Info

Product

Resources

About