photocatalyst


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photocatalyst

[‚fōd·ō′kad·əl·ist]
(physical chemistry)
A light-absorbing substance which, when added to a reaction, facilitates the reaction, while remaining unchanged at the end of the reaction.
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In this study, an investigation has been made for the degradation of azo dye by Advanced Oxidation Process (AOP) using TiO2 as photocatalyst in the presence of UV radiations, pH, irradiation time, amount of photocatalyst, concentration of H2O2 which significantly affected the extent of degradation.
Commercially available photocatalyst, which is anatase-phase titanium dioxide coated on fiber glass pad, was used for both VUV-PCO and UVC-PCO.
To artificially produce storable energy in the form of hydrogen and organic compounds requires efficiently extracting reaction electrons from a photocatalyst material using the energy in sunlight, and at the electrode, efficiently reacting with water or CO2.
A photocatalyst accelerates a photoreaction in the presence of a catalyst.
However, the band edges of the active photocatalyst lie in the UV region, which makes them inactive under visible light irradiation.
Air purification by using photocatalysts produced in this research can be a good replacement for other air purification methods due to its reasonable price, high efficiency, non-toxicity and production of harmless bi-products due to the oxidization of polluting gases.
0 at% La-doped ZnO photocatalyst was found superior to other La-doped ZnO and ZnO samples.
2] material is the most promising photocatalyst because of its high photosensitivity and wide band gap.
Therefore, this could be a promising method for wastewater treatment as it provides easier collection of photocatalyst after the treatment which reduces costs of separation.
LiNbO3 is a prominent photocatalyst having a band gap of 3.