Electrochemical oxidation of 1,3,5-trimethoxybenzene in aqueous solutions at gold oxide and lead dioxide electrodes

Comparison of electrocatalytic characterization of Ti/Sb-SnO2 and Ti/F-PbO2 electrodes

“…In the elecrocatalytic degradation process of organic pollutants, the oxygen evolution is dependent on the relative rate of reaction (2) to reaction (3). For the electrode materials with higher oxygen evolution overpotential, the oxygen evolution was difficult, reaction (2) is faster than reaction (3), and the electrocatalytic activity of the electrode and the current efficiency of organic pollutant degradation should be superior.…”

“…It is well known that proper selection of electrode materials is very important for optimizing electrochemical oxidation processes. Numerous types of electrodes including PbO 2 [2][3][4][5], SnO 2 [6,7], IrO 2 [8,9], RuO 2 [10], and boron-doped diamond (BDD) [11] have been investigated. Among these electrodes, SnO 2 and PbO 2 electrodes with low price were believed to achieve good electrocatalytic performance for organic pollutants degradation, based on their high oxygen evolution overpotential.…”

Depollution of 1,3,5-trimethoxybenzene through its electrochemical conversion into a high added value product 2,6-dimethoxy-1,4-benzoquinone

“…As described in our previous work (Hamza et al 2011), cyclic voltammogram (Fig. 1) recorded, in aqueous sulfuric acid solution at gold oxides electrode, shows that TMB molecules exhibit an irreversible adsorptional anodic peak (I) corresponding to the oxidation of adsorbed TMB molecules.…”

“…Thus, it is very important to develop water and wastewater treatment technologies for the removal of methoxybenzenes. In this context, we have investigated in our previous work (Hamza et al 2011) the removal of TMB, by its mineralization via anodic oxidation at Ta/PbO 2 . The obtained results show that electrochemical oxidation of TMB undergoes a rapid electrochemical oxidation leading to the formation of DMBQ as a major product.…”

Anodic Materials with High Energy Efficiency for Electrochemical Oxidation of Toxic Organics in Waste Water

“…For waste water treatment, due to its relative high cost compared to the most favorable biological process, the electro oxidation process was usually used to oxidize organic wastes which are toxic and resistant to biological treatment. These organic compounds usually include phenol (Andrade et al, 2008;Tahar & Savall, 1999), aniline (Hmani et al, 2009), benzoquinone, chlorinated phenol (Cao et al, 2009;Tan et al,2011), nitrophenol (Liu et al, 2008a), naphthol (Panizza & Cerisola, 2003;Panizza & Cerisola, 2004), cyanide (Hine et al, 1986), benzene (Hamza et al, 2011), cresols (Flox et al, 2009), chloranilic acid, indoles, tannic acid, 1,2-dichloroethane, herbicides (Panizza et al, 2008), pesticides (Youssef et al, 2010), surfactants (Weiss et al, 2006) and dyes. Borras et al (2003) studied the initial stages of oxidation of aqueous solutions of pchlorophenol (p-CP) and p-nitrophenol (p-NP) on Bi-doped PbO 2 electrodes.…”