Photocatalytic oxidation of organic pollutants on titania–clay composites

Ménesi, Judit; Kőrösi, László; Bazsó, Éva; Zöllmer, Volker; Richardt, André; Dékány, Imre

doi:10.1016/j.chemosphere.2007.06.049

Cited by 79 publications

(23 citation statements)

References 29 publications

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“…In the atmosphere, reactive pollutants are present as well as other secondary compounds that are generated by photochemical reactions, some which may also be chemically transformed during transportation in the atmosphere (Menesi et al 2008;Finlayson-Pitts and Pitts 1986;Wu et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Long-term phenol, cresols and BTEX monitoring in urban air

Sturaro

Rella

Parvoli

et al. 2009

Environ Monit Assess

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This paper reports the results of a long-term monitoring of benzene, toluene, ethylbenzene, xylenes (BTEX), phenol and cresols in the air of Padua during a wide period of the year 2007 using two radial passive samplers (Radiello system) equipped with BTEX- and phenol-specific cartridges. Two sites were monitored, one in the industrial area and one close to the town centre. Relevant pollution episodes have been observed during both the winter and summer periods. Benzene, together with toluene, ethylbenzene and xylenes showed their maximum concentrations during the winter season, but the secondary pollutant phenol was higher than benzene for a large period of the year when the meteorological conditions blocked the pollutants in the lower layers of the atmosphere and solar radiation increased the benzene photo-oxidation process.

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Section: Introductionmentioning

confidence: 99%

Long-term phenol, cresols and BTEX monitoring in urban air

Sturaro

Rella

Parvoli

et al. 2009

Environ Monit Assess

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“…Copper, an efficient electron trap is capable of preventing the recombination of electron-hole pairs and thereby considerably increase efficiency. Another field of relevant research is the generation of semiconductor metal oxides on the surface of catalyst supports [20][21][22]. Supports with large specific surface areas such as layer silicates are capable of accelerating photooxidative processes and they form stable composites.…”

Section: Introductionmentioning

confidence: 99%

Photooxidation of ethanol on Cu-layer silicate/TiO2 composite thin films

Ménesi

Kékesi

Zöllmer

et al. 2009

React Kinet Catal Lett

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“…This has been spurred on by the high photoactivity, stability, chemical inertness and relatively low cost of titanium dioxide [14]. One of the more recent developments is the application of TiO 2 to adsorbent materials such as activated carbon [15][16][17][18][19][20][21], zeolites [22][23][24], alumina silicates [25][26][27][28] or carbon nanotubes [29][30][31][32][33][34]. By combining the properties of activated carbon (AC) and TiO 2 , it is possible to significantly enhance the photocatalytic degradation of hazardous organics in water.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of Famotidine by Integrated Photocatalytic Adsorbent (IPCA) and Kinetic Study

et al. 2010

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Integrated photocatalytic adsorbents (IPCAs) comprised of nanocrystalline titanium dioxide (TiO 2 ) and activated carbon (AC) were prepared using an ultrasonic impregnation technique. The IPCAs were characterised by scanning electron microscopy (SEM) and Fourier-transform infrared (FT-IR) spectroscopy and were employed as catalysts for the photodegradation of famotidine-an active pharmaceutical ingredient-in aqueous solutions using illumination from a 125 W medium pressure mercury lamp. The degradation kinetics were found to follow a pseudofirst-order rate law and varying TiO 2 loadings induced different increases in the apparent first-order rate constant of the process. The kinetic behaviour can be described in terms of a modified Langmuir-Hinshelwood (LH) model. The IPCA prepared using a 10% TiO 2 to AC loading exhibited the highest rate constant with a K C and k r of 0.0172 L/mg and 0.237 mg/L/min, respectively. The LH model fits the experimental data and elucidates the effect of the TiO 2 content of the IPCA on the degradation rate. The use of calcination (heat treatment) in IPCA preparation and its effect on photocatalytic and adsorption performance were also investigated. The present work demonstrates that the combination of TiO 2 and AC results in a promising material for application in the degradation of organic pollutants.

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Photocatalytic oxidation of organic pollutants on titania–clay composites

Cited by 79 publications

References 29 publications

Long-term phenol, cresols and BTEX monitoring in urban air

Long-term phenol, cresols and BTEX monitoring in urban air

Photooxidation of ethanol on Cu-layer silicate/TiO2 composite thin films

Photodegradation of Famotidine by Integrated Photocatalytic Adsorbent (IPCA) and Kinetic Study

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