Photocatalytic activity of synthesized nanosized TiO2 towards the degradation of herbicide mecoprop

Comparison of different iron-based catalysts for photocatalytic removal of imidacloprid

“…These results also indicate a higher efficiency of the photodegradation using the mercury lamp. Although the pH value does not give direct information about integral reaction kinetics, its monitoring during a photolytic process gives a valuable insight into the net changes in the investigated system [7].…”

“…sample volume 30.0 cm 3 ) [7,9]. The solutions were illuminated with a 125 W mercury lamp (Philips, HPL-N, Germany, emission bands in the UV region of 304, 314, 335 and 366 nm, with a maximum at 366 nm) or with a Philips EXN 50 W halogen lamp.…”

“…Chemical catalytic systems such as Fenton and photo-Fenton catalytic reactions [1][2][3], H 2 O 2 /UV process [4], and TiO 2 -mediated photocatalysis [5][6][7][8][9][10] have been used under a range of experimental conditions to reduce the toxicity of a variety of organic pollutants. In the case of homogenous catalysis like photo-Fenton reactions, the iron ions remain in the water solution at the end of the process.…”

Comparative depollution of mecoprop aqueous solutions by electrochemical incineration using BDD and PbO2 as high oxidation power anodes

“…Due to the high toxicity of this compound, effective degradation technologies are needed for its removal from the aquatic environment to prevent its possible nocive effects on living beings. Up to now, MCPP degradation has been investigated by means of O 3 and O 3 /H 2 O 2 [30], TiO 2 /UV [31], biodegradation [32] or electro-Fenton [33], and more recently, one of our groups has reported the successful mineralization process of MCPP by anodic oxidation using a one-compartment filter-press electrolytic reactor with a BDD anode and Na 2 SO 4 as background electrolyte [34]. While the latter paper was focused on the kinetics analysis and the identification of the degradation intermediates to propose an electrochemical oxidation pathway for MCPP, here we investigate its degradation by using undoped Ti/PbO 2 and BDD anodes when varying different operating parameters such as current, liquid flow rate and herbicide concentration, and afterwards both systems are compared to finally describe the optimized setup.…”

Reaction pathways and mechanisms of photodegradation of pesticides

“…The major photobeing trapped by oxygen. products of photodegradation of ethyl bromophos and Topalov et al [229] studied the photocatalytic minerdichlofenthion were identified from the corresponding alization of mecoprop (vide supra) in water, using TiO as 2 GC-MS (EI) fragmentation patterns, corresponding to photocatalyst and irradiating with a medium-pressure oxidation and photohydrolysis pathways. The authors mercury lamp.…”