Enhanced Photocatalytic Activity of Co Surface Doped Nanocrystalline TiO2-SiO2 Composite Films

Zhao, Nan; Yao, Yao; Feng, Jiwen; Yao, Mingming; Li, Fang

doi:10.1007/s11270-012-1321-3

Cited by 17 publications

(5 citation statements)

References 17 publications

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“…[13,14] One mL Ti (OC 4 H 9 ) 4 was added to 20 mL absolute C 2 H 5 OH. Then, 20 mL HNO 3 (0.2M) was added to the above solution with vigorous stirring.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films

Zhang

Song

Guan

et al. 2015

Journal of Experimental Nanoscience

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Interest in the photocatalytic oxidation of formaldehyde from contaminated wastewater is growing rapidly. The photocatalytic activity of the nanocrystalline Fe 3C /F ¡ co-doped TiO 2 ÀSiO 2 composite film for the degradation of formaldehyde solution under visible light was discussed in this study. The films were characterised by field emission scanning electron microscopy (FE-SEM) equipped with energy-dispersive spectroscopy, X-ray diffraction (XRD), BET surface area, UVÀVis absorption spectroscopy, and photoluminescence spectroscopy. The FE-SEM results revealed that the Fe 3C /F ¡ co-doped TiO 2 ÀSiO 2 film was composed of uniform round-like nanoparticles or aggregates with the size range of 5À10 nm. The XRD results indicated that only the anatase phase was observed in the film. Compared with a pure TiO 2 film and a singly modified TiO 2 film, the Fe 3C /F ¡ co-doped TiO 2 ÀSiO 2 composite film showed the best photocatalytic properties due to its strong visible light adsorption and diminished electrons-holes recombination.

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“…[13,14] One mL Ti (OC 4 H 9 ) 4 was added to 20 mL absolute C 2 H 5 OH. Then, 20 mL HNO 3 (0.2M) was added to the above solution with vigorous stirring.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films

Zhang

Song

Guan

et al. 2015

Journal of Experimental Nanoscience

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“…All chemicals used in this study were analytically pure. TiO 2 colloid or SiO 2 colloid was prepared through the sol-gel method [4,5]. TiO 2 -ZnO composite colloid was prepared by the following method.…”

Section: Methodsmentioning

confidence: 99%

TiO2-Based Composite Film for the Photodegradation of Methyl Green

Song

Yao

2014

AMR

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A simple process was developed for preparation of highly photoactive Fe and S codoped TiO2-SiO2-ZnO composite film. The Brunauer–Emmett–Teller (BET) surface area results showed that the specific surface area of the composite TiO2 sample was 432.5m2g-1, while that of the pure TiO2 was 103.4m2g-1. The diffuse reflectance measurements exhibited an extension of light absorption into the visible region for the composite TiO2. The photoluminescence (PL) spectra analysis indicated that the electron-hole recombination rate was effectively inhibited in the composite TiO2. The photocatalytic activities of the TiO2 films were evaluated by the photocatalytic decomposition of methyl green in aqueous solution. The composite TiO2 film exhibited excellent photocatalytic activities compared to pure TiO2 film.

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“…All chemicals used in this study were analytically pure and were used as received without any further purification. TiO2 colloid or SiO2 colloid was prepared through the sol-gel method [2,3]. TiO2-SiO2 composite colloid was prepared by mixing TiO2/SiO2 colloid at 2/1 in volume ratio under strong stirring.…”

Section: Methodsmentioning

confidence: 99%

V and F Codoped TiO2-SiO2 Composite Films for Enhanced Photocatalytic Activity

Guan

Yao

2014

AMR

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A simple process was developed for preparation of highly photoactive V and F codoped TiO2-SiO2 composite film. The as-prepared specimens were characterized using Brunauer–Emmett–Teller (BET) surface area, photoluminescence (PL) spectra, and UV–Vis spectroscopy. The BET results revealed that the surface area of the modified TiO2 sample was 413 m2 g-1, while pure TiO2 103 m2 g-1. The PL results showed that the recombination rate of the photo-generated electrons and holes was effectively prohibited via the multi-modification. The photocatalytic activities of the films were evaluated by degradation of methyl green (MG) dye. Compared with pure TiO2 film, the multi-modified TiO2 film exhibited excellent photocatalytic activity and clearly responsive to the visible light. Keywords: V and F codoping; TiO2-SiO2 composite film; Photocatalytic activity

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Enhanced Photocatalytic Activity of Co Surface Doped Nanocrystalline TiO2-SiO2 Composite Films

Cited by 17 publications

References 17 publications

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films

TiO<sub>2</sub>-Based Composite Film for the Photodegradation of Methyl Green

V and F Codoped TiO<sub>2</sub>-SiO<sub>2</sub> Composite Films for Enhanced Photocatalytic Activity

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Enhanced Photocatalytic Activity of Co Surface Doped Nanocrystalline TiO2-SiO2 Composite Films

Cited by 17 publications

References 17 publications

Photocatalytic degradation of formaldehyde by nanostructured TiO2composite films

Photocatalytic degradation of formaldehyde by nanostructured TiO2composite films

TiO<sub>2</sub>-Based Composite Film for the Photodegradation of Methyl Green

V and F Codoped TiO<sub>2</sub>-SiO<sub>2</sub> Composite Films for Enhanced Photocatalytic Activity

Contact Info

Product

Resources

About

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films

Photocatalytic degradation of formaldehyde by nanostructured TiO₂composite films