Photocatalytic activity of titania modified mesoporous silica for pollution control

Belhekar, A.A.; Awate, S. V.; Ramanathan, Anand

doi:10.1016/s1566-7367(02)00179-6

Cited by 113 publications

(76 citation statements)

References 11 publications

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“…It has been generally reported that the change of the band gap energy in TiO2 can be attributed to one or a combination of the following two factors: (1) quantum size effects [16] and (2) formation of rutile phase [17].…”

Section: Resultsmentioning

confidence: 99%

Properties of TiO2 film prepared from titanium tetrachloride

2004

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The properties of TiO2 film prepared by titanium tetrachloride were investigated with respect to annealing temperatures in terms of phase change, crystallite size, and band gap energy. The TiO2 film dried at room temperature exhibited an amorphous phase, while films calcined above 281 and at 990 o C displayed anatase TiO2 and a mixture of anatase and rutile, respectively. The TiO2 film was transformed to an anatase phase through three stages during the annealing processes: (1) removal of water, (2) decomposition of a peroxo group, and (3) amorphous-anatase phase transformation. It was also found that the bandgap energy of TiO2 film was changed with increasing annealing temperature. This is attributed to the quantum size effect in the range of 475-675 o C and to the formation of rutile phase having lower band gap energy than anatase in the range of 675-990 o C.

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Section: Resultsmentioning

confidence: 99%

Properties of TiO2 film prepared from titanium tetrachloride

2004

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“…In Ag 3 VO 4 or NiO/Ag 3 VO 4 system, the plot of ln(C 0 /C) vs. time results in a straight line (inset of Fig. 7), which indicated that the decolorization of ARB in the Ag 3 VO 4 or NiO/Ag 3 VO 4 system followed the pseudo-first-order kinetics.…”

Section: Effects Of Cocatalysts On the Photocatalytic Activitymentioning

confidence: 87%

“…To date, titanium dioxide (TiO 2 ) has undoubtedly been proven to be the most excellent photocatalyst for the oxidative decomposition of many organic compounds under UV irradiation [2][3][4]. However, the fast recombination rate of photogenerated electron-hole pairs hinders the commercialization of this technology [5,6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Visible‐Light Photocatalytic Activity of Ag₃VO₄ Powders.

Hu¹,

Hu²

2007

ChemInform

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Monoclinic structure Ag 3 VO 4 was prepared by precipitation method and evaluated for the decolorization of azodye acid red B (ARB) under visible light irradiation (l4420 nm). The Ag 3 VO 4 prepared in the excess vanadium or silver exhibited higher visible-light-driven activity than the sample prepared in a stoichiometric ratio. X-ray diffraction and UV-vis diffuse reflectance measurements indicated that the excess vanadium or silver in the preparation increased the crystallinity and absorbance in visible light region, resulting in an increase in the photocatalytic efficiency. Furthermore, the activity of the Ag 3 VO 4 was increased by 3.8 times when a NiO was loaded. It was due to the formation of a short-circuited microphotoelectrochemical cell on the surface of NiO/Ag 3 VO 4 , enhancing the separation of photogenerated electron-hole pairs, which was proved by ESR studies. r

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“…A mesoporous structure is normally favorable for photocatalytic materials because of its large specific surface area. 22) Nanowire, nanorod, and nanotube structures, which are recognized as one-dimensional (1-D) structures, can improve the electron transport properties and reduce light scattering of nanocomposites. These characteristics of 1-D nanocomposites make them suitable for use the electrodes of dyesensitized solar cells (DSSCs).…”

Section: )17)mentioning

confidence: 99%

Titania-based functional nanocomposite materials fabricated by liquid processes

Kawamura

Matsuda

2015

J. Ceram. Soc. Japan

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In this review, research on the preparation and characterization of TiO 2 -containing nanocomposites is considered. The preparations of nanocomposites by solgel and anodization methods are mainly explored. Nanocomposites are highly desired for some applications, and the means of controlling their functions to optimize performance is reviewed. The typical applications of TiO 2 -containing nanocomposites in photocatalysis and micropatterning are discussed.

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Photocatalytic activity of titania modified mesoporous silica for pollution control

Cited by 113 publications

References 11 publications

Properties of TiO2 film prepared from titanium tetrachloride

Properties of TiO2 film prepared from titanium tetrachloride

Preparation and Visible‐Light Photocatalytic Activity of Ag₃VO₄ Powders.

Titania-based functional nanocomposite materials fabricated by liquid processes

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Photocatalytic activity of titania modified mesoporous silica for pollution control

Cited by 113 publications

References 11 publications

Properties of TiO2 film prepared from titanium tetrachloride

Properties of TiO2 film prepared from titanium tetrachloride

Preparation and Visible‐Light Photocatalytic Activity of Ag3VO4 Powders.

Titania-based functional nanocomposite materials fabricated by liquid processes

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Product

Resources

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Preparation and Visible‐Light Photocatalytic Activity of Ag₃VO₄ Powders.