Factors influencing the photocatalytic degradation of Rhodamine B by TiO2-coated non-woven paper

Barka, Noureddine; Qourzal, Samir; Assabbane, Ali; Nounah, A.; Ait‐Ichou, Y.

doi:10.1016/j.jphotochem.2007.10.022

Cited by 173 publications

(62 citation statements)

References 32 publications

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“…According to numerous literature works, the influence of the initial concentration of the solute on the photocatalytic degradation rate of the most organic compounds is described by pseudo-first-order kinetics [32].…”

Section: Photocatalysismentioning

confidence: 99%

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Carlucci

Scremin

Sibillano³

et al. 2014

Inorganics

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An efficient microwave-assisted synthesis of TiO 2 :(B) nanorods, using titanium tetraisopropoxide (TTIP), benzyl alcohol as the solvent, together with boric acid and oleic acid as the additive reagents, has been developed. Chemical modification of TTIP by oleic acid was demonstrated as a rational strategy to tune the shape of TiO 2 nanocrystals toward nanorod formation. The differently-shaped TiO 2 :(B) nanocrystals were characterized in detail by transmission electron microscopy (TEM), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and nitrogen absorption-desorption. Oleic acid coordinated on the nanocrystal surface was removed by the reduction of its carboxyl group, and the photocatalytic activity of bare TiO 2 nanocrystals, under visible light irradiation, was also evaluated. The synthesized TiO 2 anatase nanorods exhibited a good photoactivity and completely degraded Rhodamine B solution within three hours.

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Section: Photocatalysismentioning

confidence: 99%

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Carlucci

Scremin

Sibillano³

et al. 2014

Inorganics

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“…This is because in the case of chloride ions the formation of Cl • radical by the reaction of photo produced OH • with Cl -oxidizes pollutants results in increase in efficiency of degradation. [24] Similarly the SO 4 2-ions adsorbed in the surface of TiO 2 react with photo-induced holes (h + ) to form sulphate radical anion ( • SO − 4 ) which is a strong oxidant [25]. The NO 3 -ions, weakly adsorbed on the surface of TiO 2 may cause acidification of the solution with the nitric acid and therefore increase the photocatalytic degradation by decreasing pH.…”

Section: Effect Of Ionsmentioning

confidence: 99%

Photocatalytic degradation of textile dyes by hydrogel supported titanium dioxide nanoparticles

Harikumar¹,

Joseph²,

Dhanya³

2013

J Environ Eng Ecol Sci

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Background: Textile industry has been condemned as one of the world's worst offenders in terms of pollution because 10-15% of all the dyes used in the industry are lost within wastewater during processing. The presence of even very low concentrations of dyes in effluent is highly visible and degradation products of these textile dyes are often carcinogenic. Owing to the complex nature of synthetic dyes, conventional biological treatment methods are ineffective. Hence there exist needs for developing treatment techniques that can lead to the complete destruction of the dye molecules from waste stream. The current study focused to develop a new photocatalytic reactor using immobilized TiO 2 capacity to decolourise and degrade textile industry effluent in an effective way. Methods: TiO 2 nanoparticles synthesized by simple precipitation method at pH 5 was successfully entrapped in biopolymer calcium (Ca)-alginate and used as heterogeneous photocatalyst for the degradation of various textile dyes using UV radiations. Photocatalyst was characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The influence of previous operational parameters on the photodegradation has been studied by setting up a laboratory scale photocatalytic reactor. Results: The scanning electron microscopic images indicate that, the alginate gel acts as a bridge that binds the nanoparticles together. The experimental results showed that the rate of degradation depends on the chemical structure of different dyes as well as adsorption of dyes by TiO 2 which is directly proportional to the surface area and dispersion of the catalyst, the adsorption of light by the dye. The kinetics of COD disappearance was slower than the discoloration of the solution. The supported TiO 2 can be used several times without lose of efficiency Conclusions: The results of this study have shown that the degradation of different textile dyes was successfully carried out in laboratory scale photoreactor containing coated TiO 2 as photo catalyst. Calcium alginate can be used as a green support for immobilizing TiO 2 nanoparticles and can be used for developing a new environment friendly immobilization system for large scale water treatment.

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“…The photocatalytic degradation of dyes is also performed in the presence of inorganic anions [35] [36]. They are generally present in industrial discharges with values depending on the nature of the effluent.…”

Section: Effect Of Some Ionsmentioning

confidence: 99%

Factors Influencing the Photocatalytic Degradation of Reactive Yellow 145 by TiO<sub>2</sub>-Coated Non-Woven Fibers

Alahiane¹,

Qourzal²,

Ouardi³

et al. 2014

AJAC

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The photocatalytic degradation of the synthetic textile dye Reactive Yellow 145 (RY 145) in aqueous solution, using TiO2 coated non-woven fibers as photocatalyst, under UV-lamp irradiation, was studied. The effects of the operational parameters such as initial dye concentration, pH, addition of oxidant hydrogen peroxide and addition of ethanol on the reaction rate were investigated. The effect of some inorganic ions such as

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Factors influencing the photocatalytic degradation of Rhodamine B by TiO2-coated non-woven paper

Cited by 173 publications

References 32 publications

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Photocatalytic degradation of textile dyes by hydrogel supported titanium dioxide nanoparticles

Factors Influencing the Photocatalytic Degradation of Reactive Yellow 145 by TiO<sub>2</sub>-Coated Non-Woven Fibers

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Factors influencing the photocatalytic degradation of Rhodamine B by TiO2-coated non-woven paper

Cited by 173 publications

References 32 publications

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Photocatalytic degradation of textile dyes by hydrogel supported titanium dioxide nanoparticles

Factors Influencing the Photocatalytic Degradation of Reactive Yellow 145 by TiO&lt;sub&gt;2&lt;/sub&gt;-Coated Non-Woven Fibers

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Factors Influencing the Photocatalytic Degradation of Reactive Yellow 145 by TiO<sub>2</sub>-Coated Non-Woven Fibers