Fenton reagents (1:1 FeIILx/HOOH) react via [LxFeIIOOH(BH+)] (1) as hydroxylases (RH .fwdarw. ROH), not as generators of free hydroxyl radicals (HO.bul.)

1993 ◽  
Vol 115 (13) ◽  
pp. 5817-5818 ◽  
Author(s):  
Donald T. Sawyer ◽  
Chan Kang ◽  
Antoni Llobet ◽  
Chad Redman
Keyword(s):  
Hydroxyl Radicals ◽  
Fenton Reagents ◽  
Free Hydroxyl

The aqueous photochemistry of sodium 9,10-anthraquinone-2-sulfonate

1976 ◽  
Vol 54 (4) ◽  
pp. 512-515 ◽  
Author(s):  
James Leslie Charlton ◽  
Rhonda Gail Smerchanski ◽  
Charles Eugene Burchill
Keyword(s):  
Hydroxyl Radicals ◽  
Free Hydroxyl

The aqueous photochemistry of sodium 9,10-anthraquinone-2-sulfonate is described and a new mechanism for the photohydroxylation is proposed. The participation of kinetically free hydroxyl radicals is ruled out.

Formation of free hydroxyl radicals after pentylenetetrazol-induced seizure and kindling

1999 ◽  
Vol 847 (2) ◽  
pp. 347-351 ◽  
Author(s):  
Christine Rauca ◽  
Renate Zerbe ◽  
Hannelore Jantze
Keyword(s):  
Hydroxyl Radicals ◽  
Free Hydroxyl

Preparation of Zinc Phthalocyanine-Calcium Alginate Gel Beads and its Use for Photocatalytic Oxidation Decolorization of Methyl Orange

2014 ◽  
Vol 809-810 ◽  
pp. 252-257
Author(s):  
Min Hong Xu ◽  
Hai Feng Chen ◽  
Guo Xiang Pan ◽  
Pei Song Tang
Keyword(s):  
Methyl Orange ◽  
Hydroxyl Radicals ◽  
Calcium Alginate ◽  
Photocatalytic Oxidation ◽  
Water Soluble ◽  
Zinc Phthalocyanine ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel ◽  
Free Hydroxyl

A supported photocatalyst zinc phthalocyanine-calcium alginate gel beads (Zn-MPc-SA) was prepared through the mixture of water-soluble zinc phthalocyanine (Zn-MPc) and sodium alginate was drip into 5% (w/v) CaCl2 solution. The Zn-MPc-SA was characterized by IR. Methyl orange was selected as a substrate to investigate the photocatalytic activity of Zn-MPc-SA. The results shown that: the surplus of methyl orange was 22.05% at the condition of pH 3, methyl orange 10mg/L 25mL, H2O2 50μL, Zn-MPc-SA 0.1460g and visible light irradiation for 3h. Zn-MPc-SA remains efficient in repetitive test cycles with no obvious degradation of catalytic activity. The reaction mechanism was likely to involve free hydroxyl radicals.

scholarly journals Free hydroxyl radicals are formed on reaction between the neutrophil-derived species Superoxide anion and hypochlorous acid

FEBS Letters ◽  
1993 ◽  
Vol 333 (1-2) ◽  
pp. 151-153 ◽  
Author(s):  
Luis P. Candeias ◽  
Kantilal B. Patel ◽  
Michael R.L. Stratford ◽  
Peter Wardman
Keyword(s):  
Hydroxyl Radicals ◽  
Superoxide Anion ◽  
Hypochlorous Acid ◽  
Free Hydroxyl
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