2003
DOI: 10.1021/ie0207010
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Degradation of Azo-dye Orange II by a Photoassisted Fenton Reaction Using a Novel Composite of Iron Oxide and Silicate Nanoparticles as a Catalyst

Abstract: A novel nanocomposite of iron oxide and silicate, prepared through a reaction between a solution of iron salt and a dispersion of Laponite clay, was used as a catalyst for the photoassisted Fenton degradation of azo-dye Orange II. This catalyst is much cheaper than the Nafion-based catalysts, and our results illustrate that it can significantly accelerate the degradation of Orange II under the irradiation of UV light (λ = 254 nm). An advantage of the catalyst is its long-term stability that was confirmed throu… Show more

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Cited by 247 publications
(134 citation statements)
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“…The change in the solution pH is related to the acidity of the intermediates produced during the degradation of AR14. A similar phenomenon was reported by Feng et al [42] and Dhananjeyan et al [43] in photoassisted Fenton degradation of azo dye Orange II mediated by heterogeneous Fenton reaction. They attributed the drop in the solution pH to two main factors.…”
Section: Effect Of Initial Phsupporting
confidence: 85%
“…The change in the solution pH is related to the acidity of the intermediates produced during the degradation of AR14. A similar phenomenon was reported by Feng et al [42] and Dhananjeyan et al [43] in photoassisted Fenton degradation of azo dye Orange II mediated by heterogeneous Fenton reaction. They attributed the drop in the solution pH to two main factors.…”
Section: Effect Of Initial Phsupporting
confidence: 85%
“…Among these treatments, advanced oxidation processes (AOPs) are powerful alternative to conventional treatment methods for such wastewater decontamination (Andreozzi et al 1999;Munter et al 2001;Tarr et al 2003;Parsons et al 2004). Most of those works were focused on treatment with Fenton, photo-Fenton (UV/Fenton) or photoFenton-like reactions (Kang et al 2000;Feng et al 2003;Neyens et al 2003;Swaminathan et al 2003;Lucas et al 2006;Sanja et al 2008), UV + H 2 O 2 (or O 3 ) (Arslan et al 1999;Karadimas et al 2003;Arslan et al 2002), photocatalysis (UV + TiO 2 or other semiconductor particles) (Arslan et al 2000;Tanaka et al 2000;Poulios et al 2003;Rao et al 2003;Danfeng et al 2004;Dong et al 2007;Wu et al 2008). These treatments are based on the in situ generation of highly reactive hydroxyl radicals (HO•).…”
Section: Introductionmentioning
confidence: 99%
“…However, sludge generation and adsorbent regeneration are the principal weakness of these processes (Slokar and Majcen Le Marechal, 1998). The Fenton process that uses Fe 2+ to react with H 2 O 2 to generate OH with powerful oxidizing ability, one of the advanced oxidation processes (AOPs), has been proposed for the degradation of organic pollutants (Chen and Pignatello, 1997;Benitez et al, 2001;Huang et al, 2002), including some dye pollutants (Kang et al, 2002;Feng et al, 2003;Swaminathan et al, 2003).…”
Section: Introductionmentioning
confidence: 99%