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Nanostructured Gd-doped ZnO films were deposited at 600°C using RF magnetron sputtering technique. The effects of Gd concentration varying from 0 to 2.0at.% on structure as well as morphology and subsequent changes in optical and photocatalytic properties were studied using X-ray diffraction (XRD), transmission electron microscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy...
In this paper, the experimental studies utilize the photoelectrocatalytic effect to eliminate another fundamental limit of photocatalysis - the recombination of photo-excited electrons and holes. Two transparent ITO glass slides are used as eletrodes and both the positive and negative bias potentials are applied across the reaction chamber. It turns out that the negative bias always exhibits higher...
This paper presents a comparative study of three methods for preparing integrated nanoporous TiO 2 films for microfluidic based photocatalytic reactors. These porous films have inherent merit of large surface-to-volume ratio and should significantly improve the device photoreactivity. It is also expected that nanoporous thin films have different performance in microfluidic chambers from that...
Microfluidics configuration may facilitate greater success for photocatalytic water treatment. In this paper, we designed a planar microfluidic reactor which can overcome the limitations of mass transfer and photon transfer in the previous photocatalytic reactors and improve the photoreaction efficiency by 2 orders of magnitude. The microreactor consisted of two TiO2-coated glass slides and a microstructured...
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