The synergistic effect of advanced oxidation processes to eliminate resistant chemical compounds

Horáková, Marta; Klementová, Šárka; Kriz, Pavel; Balakrishna, Syam; Špatenka, Petr; Golovko, Oksana; Hájková, Pavlína; Exnar, Petr

doi:10.1016/j.surfcoat.2013.10.068

Cited by 44 publications

(16 citation statements)

References 19 publications

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“…Nevertheless, increased film thickness interferes in the electron mobility, due to the increased depth of light penetration required for the photons to activate the electrons of the semiconductor, and consequently to form the HO • radicals. 39 Moreover, in very thick and dense films the majority of electron (e − )/hole (h + ) pairs are generated inside the catalyst, not reaching the surface, 6,16,37 as schematized in Figure 8. In both cases the films present low photocatalytic activity, which suggests a minimum and a maximum limiting thickness where the photocatalytic activity is greater.…”

Section: Effect Of the Film Thicknessmentioning

confidence: 99%

Effect of Growth Parameters on the Photocatalytic Performance of TiO2 Films Prepared by MOCVD

Marcello¹,

Corrêa²,

Bento³

et al. 2020

J. Braz. Chem. Soc.

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The present study evaluated the main factors that influence the photocatalytic activity of titanium dioxide (TiO 2 ) films grown by metalorganic chemical vapor deposition (MOCVD) at 400 and 500 °C, in different growth times. The photocatalytic behavior was analyzed by measuring the methyl orange dye degradation at different pH values. Structural and morphological characteristics, and the recyclability of the catalysts for several cycles were also investigated. Anatase phase was identified in all films. The higher photodegradation performances were obtained at acidic pH. The results demonstrated that the photocatalyst thickness is an important parameter in heterogenous photocatalysis. The best photocatalytic result occurred for the 395 nm-thick TiO 2 film grown at 400 °C, which presented 65.3% of the dye degradation under UV light. The recyclability experiments demonstrated that the TiO 2 films grown by MOCVD present a great stability after several photocatalytic cycles, which allows their practical application for water treatment with high efficiency.

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Section: Effect Of the Film Thicknessmentioning

confidence: 99%

Effect of Growth Parameters on the Photocatalytic Performance of TiO2 Films Prepared by MOCVD

Marcello¹,

Corrêa²,

Bento³

et al. 2020

J. Braz. Chem. Soc.

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“…The following techniques have been evaluated: photocatalytic decomposition on semiconductors [8][9][10], other advanced oxidation processes (AOPs) [10,[11][12][13], homogeneous photocatalysis [14,15], photosensitised reactions [16,17] or photolysis by high energy UV radiation [11,16,18]. For major sources of pollution, that is wastewater from agricultural industries and pesticide manufacturers, in which the concentration of pesticides may reach levels as high as several hundreds of mg/dm 3 , technologies for degradation that are low cost and relatively simple to implement have been proposed and developed [19].…”

Section: Atrazine Cyanazinementioning

confidence: 99%

Triazine Herbicides in the Environment

Klementová¹,

Keltnerova²

2015

Herbicides, Physiology of Action, and Safety

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This chapter is a review of literature concerning the fate of chloro-s-triazine herbicides, particularly atrazine, in the environment. It addresses the distribution of such herbicides and their metabolites in the soil and in water bodies, including the conditions that affect their transport mechanisms. The biodegradation pathways regarding the microbial degradation are presented as well as modification mechanisms of the compounds in plants capable of tolerating their action. Studies on the influence of the compounds on animal and human physiological processes and health, that is distribution of atrazine in the animal organisms, effects on the regulatory platform in the liver, possible carcinogenesis and endocrine disruption risks are assessed. Toxicity tests used for evaluation of the toxicity of the compounds are critically reviewed. Possible methods for atrazine degradation, including advanced oxidation procedures (AOP techniques), are outlined.

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“…The in situ generation of hydroxyl radicals (HO • ) has proved effective in the oxidation of most organic substances because it is both a nonselective reagent and a highly oxidizing agent [21]. However, the complete mineralization which is the conversion of organic molecules into CO 2 , H 2 O and other small molecules, the reaction mechanisms and the characterization of secondary products and intermediates have not been frequently investigated [35].…”

Section: The Degradation Of Organic Compounds On Thin Filmsmentioning

confidence: 99%

Enhancement of Photoelectrocatalysis Efficiency by Using Nanostructured Electrodes

Bessegato¹,

Guaraldo²,

Zanoni³

2014

Modern Electrochemical Methods in Nano, Surface and Corrosion Science

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The synergistic effect of advanced oxidation processes to eliminate resistant chemical compounds

Cited by 44 publications

References 19 publications

Effect of Growth Parameters on the Photocatalytic Performance of TiO2 Films Prepared by MOCVD

Effect of Growth Parameters on the Photocatalytic Performance of TiO2 Films Prepared by MOCVD

Triazine Herbicides in the Environment

Enhancement of Photoelectrocatalysis Efficiency by Using Nanostructured Electrodes

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