13 Result(s)

Article

Comparing photocatalytic activities of commercially available iron-doped and iron-undoped aeroxide TiO₂ P25 powders

Transition metal do** is an appropriate way to increase the photocatalytic activity of TiO₂ as it offers the chance to also utilize visible light to generate charge carriers. Here, we investigated the photocata...

Johannes Melcher, Shaik Feroz, Detlef Bahnemann in Journal of Materials Science (2017)

Article

Synthesis, growth mechanism, and photocatalytic activity of Zinc oxide nanostructures: porous microparticles versus nonporous nanoparticles

A simple facile method, i.e., thermal decarbonation of ZnCO₃ hydroxides, was used to prepare a series of pure ZnO photocatalysts with controlled crystallite sizes, particle sizes, and morphologies. The ZnCO₃ prec...

Ahmed Barhoum, Johannes Melcher, Guy Van Assche… in Journal of Materials Science (2017)

Article

Paola Calza and Davide Vione (Eds.): Surface water photochemistry

Detlef Bahnemann in Analytical and Bioanalytical Chemistry (2016)

Article

The role of nanoparticulate agglomerates in TiO₂ photocatalysis: degradation of oxalic acid

The simultaneous bimodal study of the photocatalytic oxalic acid degradation by aqueous TiO₂ suspensions revealed that particular systems possess the capacity to protect a certain amount of oxalic acid from oxida...

Irina Ivanova, Cecilia B. Mendive, Detlef Bahnemann in Journal of Nanoparticle Research (2016)

Article

In vitro toxicological nanoparticle studies under flow exposure

The use of nanoparticles is becoming increasingly common in industry and everyday objects. Thus, extensive risk management concerning the potential health risk of nanoparticles is important. Currently, in vitr...

Franziska Sambale, Frank Stahl, Detlef Bahnemann… in Journal of Nanoparticle Research (2015)

Article

Brookite versus anatase TiO₂ photocatalysts: phase transformations and photocatalytic activities

Titanium dioxide nanoparticles consisting of pure anatase, anatase-rich, brookite-rich, and pure brookite modifications were synthesized and characterized by X-ray diffraction, field emission-scanning electron...

Tarek A. Kandiel, Lars Robben, Ayad Alkaima… in Photochemical & Photobiological Sciences (2013)

Article

Photocatalyzed reaction of indole in an aqueous suspension of titanium dioxide

The photocatalyzed oxidation of indole (1) in an aqueous suspension of titanium dioxide has been investigated and an attempt has been made to identify the products formed during the photooxidation process by gas ...

Mohammad Muneer, Mohd Saquib, Mohd Qamar… in Research on Chemical Intermediates (2010)

Article

Photodegradation of methylene blue in water, a standard method to determine the activity of photocatalytic coatings?

The degradation of methylene blue (MB) in aqueous solutions has been re-examined as a method to characterize the photocatalytic activity of transparent TiO₂ coatings. Increasing irradiation intensities leads to a...

Jessica Tschirch, Ralf Dillert, Detlef Bahnemann… in Research on Chemical Intermediates (2008)

Chapter

Photocatalytic Detoxification of Polluted Waters

During the past 15 years research and development in the area of photocatalysis have been tremendous. The present review describes the basic principles of photocatalysis, focusing in particular on important me...

Detlef Bahnemann in Environmental Photochemistry (1999)

Chapter

Photocatalytic Formation of Sulfur-Centered Radicals by One-Electron Redox Processes on Semiconductor Surfaces

Free radical reactions cannot only be initiated and conveniently studied by radiation- or photo-chemical methods, but it is also possible to generate reactive free radical intermediates upon band-gap illuminat...

Detlef Bahnemann in Sulfur-Centered Reactive Intermediates in Chemistry and Biology (1990)