Results 251 to 260 of about 102,456 (284)

Photocatalytic Degradation of Phenol

Environmental Monitoring and Assessment, 2003
In this study photocatalytic degradation of phenol in the presence of UV irradiated TiO2 catalyst and H2O2 was investigated. Effects of TiO2 and H2O2 concentrations and pH on photocatalytic degradation were examined. The rate constants for photocatalytic degradation were evaluated as a function of TiO2 and H2O2 concentrations and pH of the solution. It
Akbal, F, Onar, AN
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Photocatalytic degradation of 2,4-dinitrophenol

Journal of Hazardous Materials, 2009
Contamination of the food supply from agricultural waste is an increasing concern worldwide. Numerous hazardous chemicals enter the environment from various industrial sources daily. Many of these pollutants, including 2,4-dinitrophenol (2,4-DNP), are water soluble, toxic, and not easily biodegradable.
Shyam S, Shukla, Kenneth L, Dorris, Bhaskara V, Chikkaveeraiah   +2 more
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Photocatalytic degradation of nonylphenol ethoxylated surfactants

Environmental Science & Technology, 1989
Les agents de surface non ioniques sont presents dans les eaux usees domestiques et industrielles. Ici on etudie une methode de photodegradation catalysee par TiO 2 de deux types d'agents de surface non ioniques: les n-alkylphenols et les ethoxylates de ...
PELIZZETTI, Ezio, MINERO, Claudio, MAURINO, Valter, SCLAFANI A., HIDAKA H., SERPONE N.   +5 more
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Photocatalytic Degradation of Acetaminophen

2011
The photocatalytic degradation of a common analgesic (acetaminophen) with titanium dioxide irradiated with low energy ultraviolet light (365 nm) was studied in order to determine the effect of several parameters such as catalyst’s weight, photochemical effect, and initial concentration.
Aguilar, C.A., Montalvo, C., Ceron, J.G., Moctezuma, E.   +3 more
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Photocatalytic degradation of para-hydroxybenzoic acid: Relationship between substrate adsorption and photocatalytic degradation

Clean Products and Processes, 2000
Dark adsorption and photocatalytic degradation of para-hydroxybenzoic acid (PHBA) was studied in the presence of Degussa P-25 titanium dioxide photocatalyst under concentrated solar radiation. This work includes the study of the effect of pH, and of the presence of different anions and cations on dark adsorption and photocatalytic degradation (PCD) of ...
V. Subramanian, V. G. Pangarkar, A. A. C. M Beenackers   +2 more
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Heterogeneous photocatalytic degradation of nitrophenols

Journal of Photochemistry and Photobiology A: Chemistry, 2003
The photocatalytic degradation of 2-, 3- and 4-nitrophenol has been investigated in oxygenated aqueous suspensions containing TiO2. The organic reaction intermediates have been determined by high performance liquid chromatography. The results indicate the complete mineralisation of the substrates and the formation of both nitrate and ammonium ions ...
Di Paola A, Augugliaro V, Palmisano L, Pantaleo G, Savinov E   +4 more
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Photocatalytic Degradation of Metoprolol Tartrate

Topics in Catalysis, 2013
The advanced oxidation of high purity metoprolol tartrate, extracted from a commercial medicament, with TiO2 and UV light (365 nm) was investigated to determine the effect of initial reactant concentration on the reaction rate and the role of direct photolysis on the photocatalytic process.
Edgar Moctezuma, Elisa Leyva, Mariana López, Alfonso Pinedo, Brenda Zermeño, Benito Serrano   +5 more
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Photocatalytic Degradation of Hexaethylene Glycol

Catalysis Letters, 2017
Polyethylene glycol (PEG) photodegradation was studied in water under UV irradiation in the presence of catalytic amount of TiO2 using hexaethylene glycol as a model compound. Full conversion was achieved in 7 h with an average quantum yield around 1%. Formic acid was found to be the main intermediate and was slower to oxidize into CO2 (traces remains ...
Simangoye Ngobissi, Drocilia Ednah, Soufi, Jihène, Vanoye, Laurent, Richard, Dominique   +3 more
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Photocatalytic degradation of 2,4,6-trinitrotoluene

Science in China Series B: Chemistry, 2008
A Pt/TiO 2 photocatalyst was used in the photocatalytic degradation of 2,4,6-trinitrotoluene (TNT) under the irradiation of the simulated sunlight. The results show that the destruction of TNT is faster and more complete with the photocatalyst. The photocatalytic degradation of TNT follows first order kinetics.
XiuHua Liu, YiBei Fu, HeYi Wang, ZhiJing Zhong, YunShu Xu   +4 more
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