The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

Chu, Wei; Choy, W. K.; So, T. Y.

doi:10.1016/j.jhazmat.2006.06.093

Cited by 167 publications

(54 citation statements)

References 21 publications

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“…Several authors have studied the effect of pH on the degradation of pollutants by catalyzed oxidation and have shown that pH is a parameter that affects the efficiency of the photocatalytic discoloration process 30,31 . In our case, methylene blue solutions (10 mg/L) with pH values of 3, 6 and 10 were UV-irradiated during 3 hours in the presence of 10 mg of HAP/11 wt.…”

Section: Effect Of Phmentioning

confidence: 99%

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

et al. 2015

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Organic dyes and colouring textile agents are persistent pollutant materials that are difficult to decompose by microbiological treatment processes. Their oxidation through photocatalysis is an alternative way to prevent contamination of the environment. In this work, calcium deficient hydroxyapatite (HAP) was synthesized and doped with different amounts of titanium. Its performance in photocatalytic degradation of -methylene blue dye (MB) was then demonstrated. The main parameters which govern the photocatalytic treatment efficiency, such as doped titanium amount, pH, initial concentration of MB, weight of catalyst added to solution, UV-irradiation period and bubbling oxygen-have been-investigated. Photodegradation of MB is found to be effective with HAP/11 wt. %Ti in oxygenated medium. However, pH has no significant effect on the yield of discoloration.

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Section: Effect Of Phmentioning

confidence: 99%

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

et al. 2015

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“…Strict limits on the release of aniline have been established. Traditionally, aniline-containing wastewater is treated with photodecomposition [1][2][3], electrolysis [4], adsorption [5,6], oxidation [7,8], biodegradation [9] and other processes. Generally, adsorption technology has proved to be one of the most effective techniques in the separation and removal of a wide variety of organic pollutants from wastewater [10,11].…”

Section: Introductionmentioning

confidence: 99%

Kinetics and thermodynamic study of aniline adsorption by multi-walled carbon nanotubes from aqueous solution

Aljohani

Salam

2011

Journal of Colloid and Interface Science

131

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“…Such phenomenon is interconnected with the surface-charge properties of the photocatalyst. At higher pH, excess of OH available, which accelerates photogeneration of hydroxyl radicals and as a result degradation efficacy increases (Chakrabarti et al, 2004;Chu et al, 2007).…”

Section: (Iv) Effect Of Ph Of Substrate (Mb) Solutionmentioning

confidence: 99%

Efficacy of biomaterial based photocatalytic composite in treating dye pollutants

Rahman

Ahmed

Yeasmin

et al. 2018

Bangladesh J. Sci. Ind. Res.

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A biomaterial based photocatalytic composite, hydroxyapatite-TiO 2 -ZnO (HAp-TiO 2 -ZnO) has been developed following a solid-state combustion method while its efficacy was investigated through the photodegradation of (i) aquatic solution of synthetic dye, methylene blue (MB); and (ii) real textile dye effluent. The degradation profile was explored considering several factors, e.g.: (i) initial dye concentration; (ii) illumination span; (iii) dose of photocatalyst; and (iv) pH of targeted dye solution. The photodegradation was performed in both indoor and outdoor environment using halogen lamp (500 W) and sunlight respectively. Observed photodegradation revealed that though the photocatalytic composite effectively decomposed methylene blue at various extents under different experimental conditions but a dose of 0.5g photocatalyst/100 mL substrate solution (10×10 -6 M methylene blue solution at pH 4) expedited optimal degradation (~ 97%) at 2 hours' time interval. On the other hand though it was possible to degrade the textile effluent to some extent by illuminating through halogen lamp and sunlight but the success rate did not exceed 50%.

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The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

Cited by 167 publications

References 21 publications

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

Kinetics and thermodynamic study of aniline adsorption by multi-walled carbon nanotubes from aqueous solution

Efficacy of biomaterial based photocatalytic composite in treating dye pollutants

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