Journal ArticleDOI
Photocatalytic degradation of isothiazolin-3-ones in water and emulsion paints containing nanocrystalline TiO2 and ZnO catalysts
TLDR
In this paper, the photocatalytic degradation of isothiazolin-3-ones has been studied using the catalytically active TiO2 and ZnO and the inactive paint grade TiO 2, under various illumination and chemical conditions.Abstract:
The photocatalytic degradation of isothiazolin-3-ones has been studied using the catalytically active TiO2 and ZnO and the inactive paint grade TiO2, under various illumination and chemical conditions. The reaction follows a pseudo-first-order kinetics. Three types of lamps have been used. The photocatalytic degradation is faster under UV lamp, when it is compared to reaction under suntest and fluorescent lamps. In the presence of oxygen and H2O2, the reaction proceeds faster than in air atmosphere. ZnO exhibits comparable activity with TiO2 and in some cases it was found to be even better than TiO2. The reaction was studied in aqueous suspensions as well as on gas–solid interfaces. The degradation of isothiazolin-3-ones in paint formulations was also studied.read more
Citations
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A survey of photocatalytic materials for environmental remediation.
TL;DR: This review illustrates the efforts in the search of alternative photocatalysts that are not based on TiO(2), with some exceptions concerning particularly innovative modifications as nanoassembled TiO-based composites with active carbon, graphite and fullerene.
Journal ArticleDOI
Review on the improvement of the photocatalytic and antibacterial activities of ZnO
TL;DR: In this paper, a review of the application of photocatalytic degradation and the antibacterial properties of zinc oxide (ZnO) nanomaterials is reviewed, and the main methods that improve antibacterial activities are coating inorganic or organic antimicrobial agents, doping ZnO, and tuning the size, morphological characteristics, and concentration of ZnOs.
Journal ArticleDOI
Zinc oxide based photocatalysis: tailoring surface-bulk structure and related interfacial charge carrier dynamics for better environmental applications
TL;DR: In this article, the performance of zinc oxide (ZnO) has been improved by tailoring its surface-bulk structure and altering its photogenerated charge transfer pathways with an intention to inhibit the surfacebulk charge carrier recombination.
Journal ArticleDOI
Nanoparticles: Their potential toxicity, waste and environmental management
TL;DR: This literature review discusses specific issues related to handling of waste containing nanomaterials to highlight problems related to uncontrolled release of nanoparticles to the environment through waste disposal and to introduce the topics of nanowaste and nanotoxicology to the waste management community.
Journal ArticleDOI
Effects of surface oxygen vacancies on photophysical and photochemical processes of Zn-doped TiO2 nanoparticles and their relationships.
TL;DR: It can be suggested that the SOVs should play an important role during the processes of PL, surface photovoltage, and photocatalytic reactions, and, for the as-prepared TiO(2) samples doped with different amounts of Zn by thermal treatment at 550 degrees C, the larger the Sov amount, the stronger the PL and SPS signal, and the higher the photoc atalytic activity.
References
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Journal ArticleDOI
Environmental Applications of Semiconductor Photocatalysis
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Book
Photocatalysis: Fundamentals and Applications
Ezio Pelizzetti,Nick Serpone +1 more
TL;DR: In this paper, the reader is first introduced to the meaning of photocatalysis and subsequently taken through the essentials of photochemistry towards bridging it to semiconductor materials, followed by thermodynamic and kinetic aspects.
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Photochemistry on nonreactive and reactive (semiconductor) surfaces
Journal ArticleDOI
Nanocrystalline titanium oxide electrodes for photovoltaic applications
Christophe Jean Alexandre Barbe,Francine Arendse,Pascal Comte,Marie Jirousek,Frank Lenzmann,Valery Shklover,Michael Grätzel +6 more
TL;DR: In this paper, the authors developed a new type of solar cell that is based on a photoelectrochemical process, where the light absorption is performed by a monolayer of dye (i.e., a Ruthenium complex) that is adsorbed chemically at the surface of a semiconductor.
Journal ArticleDOI
Bactericidal and Detoxification Effects of TiO2 Thin Film Photocatalysts
TL;DR: In this paper, a thin transparent titanium dioxide (TiO2) film was used for the degradation of E. coli cells, which is a pyrogenic constituent of Escherichia coli (E. coli).