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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F12%3A00437107%21RIV15-AV0-61388955
rdf:type
n16:Vysledek skos:Concept
dcterms:description
The 4-chlorophenol (4-CP) degradation photoinduced by Fe(III)-citrate complex was investigated upon irradiation at 365 nm at different pHs (2.0, 3.0, 4.0 and 6.0). The best efficiency for 4-CP degradation in the presence of Fe(III)-citrate was at pH 3.0 with a value of quantum yield equal to 0.026. This effect is mainly attributed to speciation of Fe(III)-citrate complex which is very sensitive to the pH. Quantum yields of 4-CP degradation, Fe(III)-citrate disappearance and Fe(II) formation were carried out at wavelength 365 nm at different pHs (3.0 and 6.0). The effect of the pH is less pronounced for the quantum yields of 4-CP than for Fe(III)-citrate complex and Fe(II) quantum yields which are species involved in the initial photochemical process. The effect of oxygen, isopropanol and Fe(III)-citrate concentrations on the quantum yields of 4-CP degradation and also on kinetics of 4-CP disappearance was also studied. Indeed, 4-CP requires the presence of oxygen to be degraded. The disappearance of 4-CP was totally inhibited without oxygen dissolved in the solution. Oxygen is essential for the formation of oxidative species and, as a consequence, for the degradation of the pollutant. The 4-chlorophenol (4-CP) degradation photoinduced by Fe(III)-citrate complex was investigated upon irradiation at 365 nm at different pHs (2.0, 3.0, 4.0 and 6.0). The best efficiency for 4-CP degradation in the presence of Fe(III)-citrate was at pH 3.0 with a value of quantum yield equal to 0.026. This effect is mainly attributed to speciation of Fe(III)-citrate complex which is very sensitive to the pH. Quantum yields of 4-CP degradation, Fe(III)-citrate disappearance and Fe(II) formation were carried out at wavelength 365 nm at different pHs (3.0 and 6.0). The effect of the pH is less pronounced for the quantum yields of 4-CP than for Fe(III)-citrate complex and Fe(II) quantum yields which are species involved in the initial photochemical process. The effect of oxygen, isopropanol and Fe(III)-citrate concentrations on the quantum yields of 4-CP degradation and also on kinetics of 4-CP disappearance was also studied. Indeed, 4-CP requires the presence of oxygen to be degraded. The disappearance of 4-CP was totally inhibited without oxygen dissolved in the solution. Oxygen is essential for the formation of oxidative species and, as a consequence, for the degradation of the pollutant.
dcterms:title
Degradation of 4-chlorophenol in aqueous solution photoinduced by Fe(III)-citrate complex Degradation of 4-chlorophenol in aqueous solution photoinduced by Fe(III)-citrate complex
skos:prefLabel
Degradation of 4-chlorophenol in aqueous solution photoinduced by Fe(III)-citrate complex Degradation of 4-chlorophenol in aqueous solution photoinduced by Fe(III)-citrate complex
skos:notation
RIV/61388955:_____/12:00437107!RIV15-AV0-61388955
n5:aktivita
n12:I
n5:aktivity
I
n5:cisloPeriodika
5
n5:dodaniDat
n15:2015
n5:domaciTvurceVysledku
n10:6701434 n10:7697503
n5:druhVysledku
n11:J
n5:duvernostUdaju
n17:S
n5:entitaPredkladatele
n13:predkladatel
n5:idSjednocenehoVysledku
129906
n5:idVysledku
RIV/61388955:_____/12:00437107
n5:jazykVysledku
n8:eng
n5:klicovaSlova
photochemistry; citric acid; hydroxyl radicals
n5:klicoveSlovo
n7:citric%20acid n7:photochemistry n7:hydroxyl%20radicals
n5:kodStatuVydavatele
FR - Francouzská republika
n5:kontrolniKodProRIV
[AFCF9EA21C45]
n5:nazevZdroje
Photochemical & Photobiological Sciences
n5:obor
n9:CF
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
4
n5:rokUplatneniVysledku
n15:2012
n5:svazekPeriodika
11
n5:tvurceVysledku
Abida, O. Mailhot, G. Jirkovský, Jaromír Kolář, Michal
n5:wos
000303207400003
s:issn
1474-905X
s:numberOfPages
9
n4:doi
10.1039/c2pp05358f