Nano TiO2 Deposited on Crude Mineral and the Photoactivity to the Degradation of Chloroform

Song, Haiyan; Jiang, Hongfu; Liu, Xingqing; Meng, Guangyao

doi:10.3844/ajessp.2006.60.65

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…Methods such as electrophoretic deposition [15], dip-coating [9,15], and electrospinning [16,17] have been used to immobilize the TiO 2 photocatalyst on supports. It was discovered that the photocatalytic activity of the supported TiO 2 was influenced by the adsorption ability of supports to the pollutants, as the pollutants are concentrated around the photocatalyst [18]. In this study, the electrospinning technique was used to immobilize TiO 2 photocatalyst on PAN based carbon nanofibres.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange

Nyamukamba

Okoh

Tichagwa

et al. 2016

International Journal of Photoenergy

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Herein, we describe the synthesis of titanium dioxide (TiO2) nanoparticles by the hydrolysis and condensation of titanium tetrachloride. The resulting nanoparticles were immobilized on polyacrylonitrile (PAN) based nanofibres by an electrospinning technique in order to allow simple isolation and reuse of titania semiconductor photocatalyst. The composite nanofibres were heat treated to convert the polymer nanofibres to carbon nanofibres and to convert amorphous TiO2to crystalline TiO2. X-ray diffraction (XRD) analysis showed that the rutile phase was the major phase and the equatorial peaks of PAN disappeared after heat treatment at 600°C. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis confirmed that some TiO2nanoparticles were encapsulated whereas some were surface residing on the electrospun nanofibres. The TiO2nanoparticles were found to lower the cyclization temperature of PAN as indicated by differential scanning colorimetry (DSC) and differential thermal analysis (DTA). Photocatalytic studies on the degradation of methyl orange dye under UV light irradiation showed that composite nanofibres were capable of degrading organic contaminants in water. The carbon nanofibres with surface residing titanium dioxide nanoparticles (TiO2/CNF-SR) showed the highest photocatalytic activity (59.35% after 210 minutes) due to direct contact between the TiO2photocatalyst and methyl orange.

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Section: Introductionmentioning

confidence: 99%

Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange

Nyamukamba

Okoh

Tichagwa

et al. 2016

International Journal of Photoenergy

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Photocatalytic Degradation of Methylene Blue with Composite Nanocrystalline TiO2+ Diatomite

Datsko

Zelentsov

Dvornikov³

2019

IFMBE Proceedings

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Photocatalytic activity of bauxite-tailings supported nano-TiO2

Wang

2010

J. Cent. South Univ. Technol.

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TiO 2 /bauxite-tailings (TiO 2 /BTs) composites were prepared via a chemical liquid deposition method and characterized by X-ray diffractometry (XRD), scanning electronic microscopy (SEM) and N 2 adsorption analysis. The photocatalytic performance of TiO 2 /BTs composites was evaluated with UV-Vis spectrophotometer following the changes of phenol concentration under different illumination time. Effects of the calcination temperature, the pH and the cycles on the photocatalytic activity of TiO 2 /BTs composites were investigated. The composites calcined at 500 and 600 ℃ exhibit the best photocatalytic performance, and the phenol degradation ratios reacting for 40 and 160 min reach 35% and 78% respectively under the same conditions, higher than those of 29% and 76% of the Degussa P25(TiO 2 ). The ability of TiO 2 /BTs 500 (BTs 500 represents bauxite-tailings calcined at 500 ℃) composites to degrade phenol increases with decreasing pH.

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Nano TiO2 Deposited on Crude Mineral and the Photoactivity to the Degradation of Chloroform

Cited by 7 publications

References 12 publications

Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange

Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange

Photocatalytic Degradation of Methylene Blue with Composite Nanocrystalline TiO2+ Diatomite

Photocatalytic activity of bauxite-tailings supported nano-TiO2

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