Photocatalytic degradation kinetics of di- and tri-substituted phenolic compounds in aqueous solution by TiO2/UV

Kuşvuran, Erdal; Samil, Ali; Atanur, Osman Malik; Erbatur, Oktay

doi:10.1016/j.apcatb.2004.11.023

Cited by 135 publications

(58 citation statements)

References 23 publications

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“…Photocatalytic degradation is one of the most promising green technologies that can be relied to complete removal of organic dyes and colorants in industrial wastewater without producing any residues and secondary pollutants (Lathasree et al 2004;Lizama et al 2002). Titanium dioxide (TiO 2 ) is a widely used photocatalyst because of its chemical stability, abundance, inoffensiveness, and lot of applications in various fields (Kusvuran et al 2005;Fuyuki et al 1988;Kurtz and Gordon 1986;Shivaraju et al 2016). However, light absorption range of pure TiO 2 is limited to the ultraviolet (UV) spectrum of light due to its wide bandgap (approximately 3.2 eV).…”

Section: Introductionmentioning

confidence: 99%

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

et al. 2017

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Designing photocatalytic materials with modified functionalities for the utilization of renewable energy sources as an alternative driving energy has attracted much attention in the area of sustainable wastewater treatment applications. Catalyst-assisted advanced oxidation process is an emerging treatment technology for organic pollutants and toxicants in industrial wastewater. Preparation of visible-light-responsive photocatalyst such as Mg-doped TiO 2 polyscales was carried out under mild sol-gel technique. Mg-doped TiO 2 polyscales were characterized by powder XRD, SEM, FTIR, and optical and photocatalytic activity techniques. The Mg-doped TiO 2 showed a mixed phase of anatase and rutile with an excellent crystallinity, structural elucidations, polyscales morphology, consequent shifting of bandgap energy and adequate photocatalytic activities under visible range of light. Mg-doped TiO 2 polyscales were investigated for their efficiencies in the degradation of most commonly used industrial dyes in the real-time textile wastewater. Mg-doped TiO 2 polyscales showed excellent photocatalytic degradation efficiency in both model industrial dyes (65-95%) and textile wastewater (92%) under natural sunlight as an alternative and renewable driving energy.

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Section: Introductionmentioning

confidence: 99%

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

et al. 2017

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“…To depict the kinetics of photocatalytic reactions of aqueous organics, the Langmuir-Hinshelwood (L-H) model was employed [23][24][25]. According to this model, the relationship between the degradation rate ( ) and concentration of the reactant in water at time ( ) can be expressed as follows:…”

Section: Kinetic Studiesmentioning

confidence: 99%

Laboratory and Pilot-Plant Scale Photocatalytic Degradation of Polychlorinated Biphenyls in Seawater Using CM-n-TiO₂Nanoparticles

Shaban

Sayed

Maradny

et al. 2016

International Journal of Photoenergy

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Photocatalytic degradation of polychlorinated biphenyls (PCBs) in seawater was successfully achieved at laboratory level with UV light and at pilot-plant scale under natural solar radiation using carbon-modified titanium oxide (CM-n-TiO 2 ) nanoparticles. The photocatalytic performance of CM-n-TiO 2 was comparatively evaluated with reference n-TiO 2 under identical conditions. As a result of carbon incorporation, significant enhancement of photodegradation efficiency using CM-n-TiO 2 was clearly observed. To optimize the operating parameters, the effects of catalyst loading and pH of the solution on the photodegradation rate of PCBs were investigated. The best degradation rate was obtained at pH 5 and CM-n-TiO 2 loading of 0.5 g L −1 . The photodegradation results fitted the Langmuir-Hinshelwood model and obeyed pseudo-first-order reaction kinetics.

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“…where k r is the rate constant and K ad is the adsorption equilibrium constant [38][39][40][41]. When the adsorption is relatively weak and/or the reactant concentration is low, equation (10) can be simplified to the pseudo-first order kinetics with an apparent first-order rate constant k app :…”

Section: Kinetics Of Photodegradationmentioning

confidence: 99%

Simultaneous Hydrogen Production with the Degradation of Naphthalene in Seawater Using Solar Light-Responsive Carbon-Modified (CM)-n-TiO<sub>2</sub> Photocatalyst

Shaban¹

2013

MRC

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The simultaneous photocatalytic production of hydrogen and degradation of naphthalene in seawater was successfully achieved using carbon modified titanium oxide (CM-n-TiO 2 ) nanoparticles under natural sunlight illumination. Compared to unmodified titanium oxide (n-TiO 2 ), CM-n-TiO 2 nanoparticles exhibited significantly higher photocatalytic efficiency. It is considered that carbon modification is responsible for the significant enhancement in the observed photoactivity. The experimental results indicated that the simultaneous production of hydrogen and degradation of naphthalene was favorable at pH 8 and optimal catalyst dose of 1.0 g·L . The solar photocatalytic degradation of naphthalene in seawater using CM-n-TiO 2 successfully fitted using Langmuir-Hinshelwood model, and can be described by pseudo-first order kinetic model.

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Photocatalytic degradation kinetics of di- and tri-substituted phenolic compounds in aqueous solution by TiO2/UV

Cited by 135 publications

References 23 publications

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

Laboratory and Pilot-Plant Scale Photocatalytic Degradation of Polychlorinated Biphenyls in Seawater Using CM-n-TiO₂Nanoparticles

Simultaneous Hydrogen Production with the Degradation of Naphthalene in Seawater Using Solar Light-Responsive Carbon-Modified (CM)-n-TiO<sub>2</sub> Photocatalyst

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Photocatalytic degradation kinetics of di- and tri-substituted phenolic compounds in aqueous solution by TiO2/UV

Cited by 135 publications

References 23 publications

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

Degradation of selected industrial dyes using Mg-doped TiO2 polyscales under natural sun light as an alternative driving energy

Laboratory and Pilot-Plant Scale Photocatalytic Degradation of Polychlorinated Biphenyls in Seawater Using CM-n-TiO2Nanoparticles

Simultaneous Hydrogen Production with the Degradation of Naphthalene in Seawater Using Solar Light-Responsive Carbon-Modified (CM)-n-TiO&lt;sub&gt;2&lt;/sub&gt; Photocatalyst

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Product

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Laboratory and Pilot-Plant Scale Photocatalytic Degradation of Polychlorinated Biphenyls in Seawater Using CM-n-TiO₂Nanoparticles

Simultaneous Hydrogen Production with the Degradation of Naphthalene in Seawater Using Solar Light-Responsive Carbon-Modified (CM)-n-TiO<sub>2</sub> Photocatalyst