Efficiency of TiO2 photocatalytic degradation of HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[γ]-2-benzopyran) in natural aqueous solutions by nested experimental design and mechanism of degradation

Calza, Paola; Sakkas, Vasilios A.; Medana, Claudio; Islam, Md. Azharul; Raso, E.; Panagiotou, K.; Albanis, Triantafyllos A.

doi:10.1016/j.apcatb.2010.06.038

Cited by 20 publications

(12 citation statements)

References 18 publications

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“…This technique is widely employed in the degradation of water pollutants and allows to obtain in many cases the complete mineralization to CO 2 , H 2 O and inorganic salts [11][12][13]. In the present work, we have investigated the possibility to obtain a new photoactive system, able to remove pollutants present in water, using a photoactive semiconductor oxide (titanium dioxide) and the enzyme soybean peroxidase (SBP).…”

Section: Introductionmentioning

confidence: 99%

TiO2-soybean peroxidase composite materials as a new photocatalytic system

Calza

Avetta

Rubulotta

et al. 2014

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

TiO2-soybean peroxidase composite materials as a new photocatalytic system

Calza

Avetta

Rubulotta

et al. 2014

Chemical Engineering Journal

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“…water and oxygen) to form highly reactive radical species such as hydroxyl radical and superoxide anion [7]. These reactive species have strong oxidizing power and can complete mineralize most organic compounds, yielding carbon dioxide and dilute mineral acids as the final products [8,9].…”

Section: Introductionmentioning

confidence: 99%

Investigations of photocatalytic activities of photosensitive semiconductors dispersed into epoxy matrix

Calza¹,

Rigo²,

Sangermano³

2011

Applied Catalysis B: Environmental

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New hybrid catalyst coating have been synthesised encapsulating TiO 2 nanoparticles into an epoxy matrix by means of UV-induced polymerization. It was shown that the presence of the titania nanoparticles did not significantly influenced the curing process. Morphological analysis of the achieved UV cured coatings containing titania showed an homogeneous distribution of the inorganic particles, with an average size between 130-160 nm. It is mandatory that the coating will not be itself degraded during UV irradiation. FT-IR measures performed on aged coatings subjected to UV irradiation for 41 days showed that the photodegradation of either the pristine epoxy coating or coating containing the photocatalyst were negligible.The photocatalytic efficiency of these new catalysts was evaluated by studying the degradation of some organic compounds under UV light. Methylene blue was employed as model molecule to investigate the photoactivity toward organic molecule directly adsorbed on the coating surface. Under irradiation, complete dye degradation was achieved within 90 min.Phenol and 3,5-dichlorophenol were used as target molecules for studying photoactivity toward organic compounds dissolved in aqueous solution. Also in these cases, complete degradation of the organic compounds was achieved.

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“…It is well known that irradiation of TiO 2 with an energy source higher than its band gap produces electrons and holes in the conduction band and valence band, respectively. These photogenerated holes and electrons can combine with the surfaceadsorbed species (e.g., water and oxygen) to form highly reactive radical species such as hydroxyl radical and superoxide radical anion and can completely mineralize most organic compounds [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide–epoxy hybrid material as innovative photocatalyst

2013

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New photocatalytic materials prepared by dispersing graphene oxide (GO x ) into UV-curable epoxy resin can be classified as semiconductors and thanks to this behavior it can be used in order to activate photoxidative process in a similar way as it happens with the well-known TiO 2 . The activity of these new photocatalytic materials was evaluated in aqueous phase; photoactivity was determined by following the photodegradation of phenol during irradiation in the presence of epoxy crosslinked films containing GO x .

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Efficiency of TiO2 photocatalytic degradation of HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[γ]-2-benzopyran) in natural aqueous solutions by nested experimental design and mechanism of degradation

Cited by 20 publications

References 18 publications

TiO2-soybean peroxidase composite materials as a new photocatalytic system

TiO2-soybean peroxidase composite materials as a new photocatalytic system

Investigations of photocatalytic activities of photosensitive semiconductors dispersed into epoxy matrix

Graphene oxide–epoxy hybrid material as innovative photocatalyst

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