Optical Absorption Property and Photo‐catalytic Activity of Tin Dioxide‐doped Titanium Dioxides

Li, Huaixiang; Xia, Rong‐Hua; Jiang, Zheng‐Wei; Chen, Shan‐Shan; Chen, Dezhan

doi:10.1002/cjoc.200890322

Cited by 13 publications

(3 citation statements)

References 28 publications

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“…From the XRD patterns of pure TiO 2 , SnO The photocatalytic activity of SnO 2 shows higher efficiency when compared with above three but further studies have to be done regarding SnO 2 due to its toxicity and other risk related factors. The degradation rate of Methylene blue is calculated for different irradiation time by using the formula [5],…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Characterization and Photocatalytic Properties of TiO2-SnO2 Composite Nanoparticles

Duraisamy

2013

AMR

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Pure TiO2 nanoparticles were synthesized using Titanium (IV)-n-butoxide as Titanium precursor and Sn doping was performed by adding Tin (II) ethylhexanate (Sn precursor) in Titanium precursor by Sol-gel method. The morphology of nanoparticles was examined by XRD and SEM analysis. The XRD analysis shows the formation of mixture phases (anatase and brookite) for pure TiO2. Addition of lower Sn precursor concentration resulted in the formation of Sn doped TiO2 nanoparticles. On increasing the Sn precursor favours the growth of TiO2-SnO2 nanocomposites. It is interesting to observe the fraction of brookite phase in TiO2 decreases by increasing the Sn precursor concentration. The photocatalytic activity test for pure TiO2, pure SnO2, Sn doped TiO2 nanoparticles and TiO2-SnO2 nanocomposites were carried out for Methylene blue (MB) solution. Both Sn doped TiO2 nanoparticles and TiO2-SnO2 nanocomposites show faster photocatalytic degradation than pure TiO2 nanoparticles due to suppression of brookite phase by addition of Sn precursor.

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Section: Resultsmentioning

confidence: 99%

“…Titanium-Tin mixed oxides have been studied for variety of applications such as gas sensing [1,2], anti-bacterial activity [3], three-way catalysts and photocatalysis [4,5]. TiO 2 is an n-type semiconductor which exists in three polymorphs namely anatase, brookite and rutile structure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Properties of TiO2-SnO2 Composite Nanoparticles

Duraisamy

2013

AMR

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“…Since Fujishima [1] found TiO 2 electrode can produce hydrogen by water splitting and then put that method on production, TiO 2 with its stable physical and chemical properties, high photocatalysis activity, nontoxic, etc, has been an acknowledged most application prospect materials of photocatalyst. TiO 2 has a band gap of 3.2 eV [2], low utilization of solar energy and the fast recombination of electrons and holes stimulated by light lead to low light quantum efficiency [3][4]. Try to improve its response to visible light and reduce the recombination of photongenerated carrier by modifying the performance of TiO 2 has always been a research hotspot.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Properties of (Fe, N)-Codoped TiO2

Tang

Yuan

et al. 2013

AMR

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Fe, N)-codoped TiO2 were prepared by calcining the Fe-doped TiO2 samples accomplished by precipitation method in the nitrogen atmosphere, and the photocatalytic properties of (Fe, N)-codoped TiO2 at different temperatures were investigated. The samples were characterized by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and ultraviolet-visible (UV-vis). The results show that the (Fe, N)-codoped TiO2 powder samples calcined at 600°C are dispersed well with more hydroxyl groups on its surface. The absorption edge of the (Fe, N)-codoped TiO2 is 429nm due to the effects of mixed crystal, which means the improvement of photocatalytic capability.

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Fluorescence Quenching of Pheophytin‐a by Copper(II) Ions

Ming-bo

Chen

et al. 2009

Chin. J. Chem.

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A method was developed for determination of Cu(II) ions quantitatively by measuring fluorescent intensity of pheophytin-a (Pheoa) solution. The Pheoa was obtained by de-intercalation of magnesium from the porphyrin ring of chlorophyll-a (Chla) extracted from fresh spinach leaves. Its two UV-Vis absorption peaks at 505 and 535 nm in acetone solution have been observed but disappeared when the acetone solution of Pheoa was mixed with a Cu(II) ion aqueous solution. A fluorescence quenching phenomenon was thus observed when the acetone solution of Pheoa was mixed with an aqueous solution of Cu(II) ions. However, other physiologically relevant cations rarely caused any quenching fluorescence of Pheoa under the same experimental conditions. Kinetics of the fluorescence fading process was investigated by measuring the effects of Cu(II) ion concentration, reaction time and reaction temperature on the fluorescence intensity of the Pheoa acetone solution. An activation energy of (10±1) kJ•mol -1 was estimated from Arrhenius empirical relation assuming that the interaction between the Pheoa and the Cu(II) ions was the first order reaction. The calibration graph obtained with the fluorescence was linear over the Cu(II) concentration range of 8.0×10-5 -8.0×10 -7 mol•dm -3 with a detection limit of 8.0×10 -7 mol•dm -3 for Cu(II)ion.

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Optical Absorption Property and Photo‐catalytic Activity of Tin Dioxide‐doped Titanium Dioxides

Cited by 13 publications

References 28 publications

Synthesis, Characterization and Photocatalytic Properties of TiO<sub>2</sub>-SnO<sub>2 </sub>Composite Nanoparticles

Synthesis, Characterization and Photocatalytic Properties of TiO<sub>2</sub>-SnO<sub>2 </sub>Composite Nanoparticles

Photocatalytic Properties of (Fe, N)-Codoped TiO<sub>2</sub>

Fluorescence Quenching of Pheophytin‐a by Copper(II) Ions

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