Anatase phase TiO2 thin films obtained by pulsed laser deposition for gas sensing applications

György, E.; Socol, G.; Axente, E.; Mihăilescu, I. N.; Ducu, Cătălin; Ciucă, Sorin

doi:10.1016/j.apsusc.2005.01.074

Cited by 101 publications

(40 citation statements)

References 25 publications

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“…There are three types of crystalline phases of nano-TiO 2 , namely, the rutile, anatase, and brookite phases. The anatase and rutile phases are the common crystallographic phases found in the formation of nano-TiO 2 , with the former particularly favored for its high photocatalytic activity [30] and exceptional thermodynamic stability in nanoscale dimensions [9]. The crystalline structure of nano-TiO 2 is represented as a TiO 6 octahedral.…”

Section: Effects Of Dopants In the Formation Ofmentioning

confidence: 99%

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

Tan

Wong

Mohamed

2011

ISRN Materials Science

104

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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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Section: Effects Of Dopants In the Formation Ofmentioning

confidence: 99%

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

Tan

Wong

Mohamed

2011

ISRN Materials Science

104

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“…Di Valentin et al [17] calculated the density function of the semiconductor and showed that carbon doping of TiO 2 favored the formation of oxygen vacancies, which might enhance the photoactivity. The grain size was approximately 20 nm for both the undoped and C-doped films calculated from the Scherrer equation [27]. Peak positions 2u were obtained via Voight function fits of high-resolution regional scans.…”

Section: Photoelectrocatalytic Experimentsmentioning

confidence: 99%

“…It has numerous advantages over conventional deposition methods. PLD ensures a well adherent thin film with good mechanical rigidity [27] and surfaces with high specific surface area [28]. In addition, PLD also offers advantages such as stoichiometrically transferring material from target to substrate, capability of depositing both inert and reactive gases, wide range of operational pressure and temperature, and broad selection in substrate materials.…”

Section: Introductionmentioning

confidence: 99%

Photoeletrochemical generation of hydrogen over carbon-doped TiO2 photoanode

Zhou

Schulz

Lin

et al. 2009

Applied Catalysis B: Environmental

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“…TiO 2 thin films exhibit unique properties such as high dielectric constant, wide optical bandgap, high refractive index, photo catalytic, low absorption and high transparency with high chemical and thermal stabilities. Because of its excellent properties, it finds applications in heterogeneous catalysis, photocatalysts, self cleaning windows, solar cells, gas sensors, corrosion resistant coatings, optical coatings, metal oxide field effect transistors, varistors, Li-based batteries and electro chromic devices [1][2][3]. The occurrence of anatase and rutile phase of TiO 2 thin films mainly depends on the deposition method, process parameters and substrate temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of substrate temperature on microstructure and properties of nanocrystalline titania thin films prepared by pulsed laser deposition

Balakrishnan¹,

Manavalan²,

Babu³

et al. 2016

Nanosystems: Phys. Chem. Math.

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Titanium oxide (TiO 2 ) films were deposited on silicon (100) and quartz substrates at various substrate temperatures (300 -873 K) at an optimized oxygen partial pressure of 3.0 × 10 −2 mbar by pulsed laser deposition. The effect of substrate temperature on structure, surface morphology and optical properties of the films were investigated using X-ray diffraction (XRD), atomic force microscopy (AFM) and photoluminescence spectroscopy (PL) respectively. The XRD results showed that the films are polycrystalline in nature and have tetragonal structure. The film prepared at higher substrate temperature showed strong rutile phase. The results indicated that all the films possess both phases (anatase and rutile) of titania. The AFM shows the crystalline nature, dense, uniform distribution of the nanocrystallites with a surface roughness of 2 -8 nm. The photoluminescence studies showed the asymmetric peak ∼ 370 nm indicating the bandgap for the TiO 2 films.

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Anatase phase TiO2 thin films obtained by pulsed laser deposition for gas sensing applications

Cited by 101 publications

References 25 publications

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

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

Photoeletrochemical generation of hydrogen over carbon-doped TiO2 photoanode

Effect of substrate temperature on microstructure and properties of nanocrystalline titania thin films prepared by pulsed laser deposition

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