Synthesis and evaluation of Iron-doped titania/silane based hydrogel for the adsorptional photocatalytic degradation of Victoria blue under visible light

2014 ◽  
Vol 434 ◽  
pp. 48-58 ◽  
Author(s):  
Thayyath S. Anirudhan ◽  
Peethambaran L. Divya ◽  
Jayachandran Nima ◽  
Sadanandan Sandeep
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Iron Doped ◽  
Doped Titania

Photocatalytic degradation of selected herbicides in aqueous suspensions of doped titania under visible light irradiation

2010 ◽  
Vol 179 (1-3) ◽  
pp. 49-56 ◽  
Author(s):  
Daniela V. Šojić ◽  
Vesna N. Despotović ◽  
Nadica D. Abazović ◽  
Mirjana I. Čomor ◽  
Biljana F. Abramović
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Aqueous Suspensions ◽  
Doped Titania

scholarly journals Photocatalytic Degradation of Azo Dye Reactive Violet 5 on Fe-Doped Titania Catalysts under Visible Light Irradiation

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 645 ◽  
Author(s):  
Antonio Zuorro ◽  
Roberto Lavecchia ◽  
Marika Michela Monaco ◽  
Giuseppina Iervolino ◽  
Vincenzo Vaiano
Keyword(s):  
Hydrogen Peroxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Textile Industry ◽  
Azo Dye ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Textile Effluents ◽  
Effects Of Ph ◽  
Doped Titania

The presence of azo dyes in textile effluents is an issue of major concern due to their potential impact on the environment and human health. In this study we investigate the photocatalytic degradation under visible light of Reactive Violet 5 (RV5), an azo dye widely used in the textile industry. A preliminary screening of different titania-based catalysts was carried out to identify the best candidate for RV5 removal. The selected catalyst was then tested in a stirred and aerated lab-scale reactor illuminated with a blue light-emitting diode (LED) source emitting in the wavelength range of 460–470 nm. The effects of pH, catalyst load, and hydrogen peroxide additions on the efficiency of dye removal were evaluated. Under the best conditions (pH 10, 3 g/L of catalyst, and 60 mM hydrogen peroxide), the dye solution was completely decolorized in about 2 h. Overall, the results obtained suggest that the proposed process may represent a suitable method for the removal of RV5 from textile effluents.

Photocatalytic Degradation of Reactive Green KE-4BD in Aqueous Solutions over N-Doped Titania

2011 ◽  
Vol 183-185 ◽  
pp. 1767-1771
Author(s):  
Gang Xin ◽  
Ju Shen ◽  
Ya Li Meng
Keyword(s):  
Aqueous Solutions ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
X Ray Diffraction ◽  
Inorganic Substances ◽  
Acidic Conditions ◽  
Uv Visible ◽  
Doped Titania

The photodegradation of reactive green KE-4BD solution is investigated using N-doped titania (N-TiO2) under visible light irradiation. N-TiO2 is prepared using ammonia or urea as a nitrogen source and characterized by X-ray diffraction, Brunauer-Emmett-Teller methods, and UV-visible diffuse reflectance spectra. The effects of the initial dye concentration and pH on photocatalytic degradation are studied, and the direct correlation between pH, dye concentration, and the rate of degradation are determined. Experimental results show that aqueous solutions of KE-4BD degrade easily in weakly acidic conditions in the presence of N-doped TiO2 (1 g/L) as a photocatalyst. The optimized dye concentration for photolysis is 150 mg/L. The complete degradation of KE-4BD could be achieved under visible light irradiation, and the dye molecules could be partly decomposed into inorganic substances.

scholarly journals Photocatalytic Degradation of Azo Dye Reactive Violet 5 on Fe-Doped Titania Catalysts under Visible Light Irradiation

2019 ◽  
Author(s):  
Antonio Zuorro ◽  
Roberto Lavecchia ◽  
Marika Michela Monaco ◽  
Giuseppina Iervolino ◽  
Vincenzo Vaiano
Keyword(s):  
Hydrogen Peroxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Textile Industry ◽  
Azo Dye ◽  
Preliminary Screening ◽  
Textile Effluents ◽  
Effects Of Ph ◽  
Potential Impact ◽  
Doped Titania

The presence of azo dyes in textile effluents is an issue of major concern due to their potential impact on the environment and human health. In this study we investigate the photocatalytic degradation under visible light of Reactive Violet 5 (RV5), an azo dye widely used in the textile industry. A preliminary screening of different titania-based catalysts was carried out to identify the best candidate for RV5 removal. The selected catalyst was then tested in a stirred and aerated lab-scale reactor illuminated with a light LED source (λmax = 460 nm). The effects of pH, catalyst load and hydrogen peroxide additions on the efficiency of dye removal were evaluated. Under the best conditions (pH 10, 3 g/L of catalyst and 60 mM hydrogen peroxide), the dye solution was completely decolorized in about 2 h. Overall, the results obtained suggest that the proposed process may represent a suitable method for the removal of RV5 from textile effluents.

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