Aniline degradation by electrocatalytic oxidation

Li, Yijiu; Wang, Feng; Zhou, Guanyu; Ni, Yaming

doi:10.1016/s0045-6535(03)00590-3

Cited by 74 publications

(29 citation statements)

References 16 publications

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“…These compounds are harmful to human health, and suspected to be carcinogens. Many techniques including physical adsorption [3][4][5][6][7][8], electrochemical oxidation [9][10][11], biodegradation [12][13][14], catalytic wet oxidation [15][16][17], and Fenton reagent oxidation [18][19][20] have been adopted for the removal of phenolic and aniline pollutants. Though practicable and effective these methods are, they also have some drawbacks, such as high cost, incomplete removal, more toxic byproducts than original pollutants.…”

Section: Introductionmentioning

confidence: 99%

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Zhang

Zhao

Niu

et al. 2009

Journal of Hazardous Materials

417

180

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a b s t r a c tFe 3 O 4 magnetic nanoparticles (MNPs) with diameters about 10 nm were synthesized successfully and used to remove phenol and aniline from aqueous solution. The results showed that phenol and aniline could be eliminated easily from solution under acidic and neutral conditions in the presence of MNPs and H 2 O 2 . When the concentrations of Fe 3 O 4 MNPs and H 2 O 2 were 5 g L −1 and 1.2 M, respectively, phenol and aniline could be removed completely after 6 h of reaction at 308 K, and the total organic carbon (TOC) abatement efficiency for phenol and aniline were 42.79% and 40.38%. Some intermediates such as formic acid, acetic acid, fumaric acid and hydroquinone were detected during reaction. Fe 3 O 4 MNPs exhibited good stability and reusability, also showed excellent catalysis ability to eliminate some substituted phenolic and aniline compounds from solution. Fe 3 O 4 MNPs had good superparamagnetism and was readily separated from solution by applying an external magnetic field. Finally we proposed that phenol and aniline might be degraded by the hydroxyl free radicals (·OH) released from H 2 O 2 in the presence of Fe 3 O 4 MNPs as catalysts.

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Section: Introductionmentioning

confidence: 99%

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Zhang

Zhao

Niu

et al. 2009

Journal of Hazardous Materials

417

180

View full text Add to dashboard Cite

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“…These anodes have also been used to treat COD in wastewater [24] and to treat landfill leachate resulting in decolorization, COD removal, and complete elimination of ammonia [25]. Furthermore, tin oxide and antimony-doped tin oxide anodes can also oxidize organic compounds such as phenol [26][27][28] pmethoxyphenol [29], pentachlorophenol [30], bisphenol-A [31], aniline [32], and acetominophen [33]. These results suggest that Ti/SnO 2 -Sb 2 O 5 anodes can destroy organic contaminants in water simultaneously with the inactivation of pathogens.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ti/SnO2–Sb2O5 anode preparation for electrochemical oxidation of organic contaminants in water and wastewater

et al. 2007

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The preparation of antimony-doped tin oxide anodes on a titanium substrate (Ti/SnO 2 -Sb 2 O 5 anodes) by dipping in a solution of tin chloride and antimony chloride and annealing at high temperatures was optimized for the potential applications of drinking water disinfection, wastewater effluent disinfection, and industrial waste stream treatment. The effectiveness of Ti/SnO 2 -Sb 2 O 5 anodes prepared under different conditions was evaluated by using hexanol as a probe molecule to measure the extent of oxidative reactions, and anode performance was monitored by cyclic voltammetry. A large factorial matrix consisting of tin chloride concentration · antimony chloride concentration · annealing temperature was first evaluated, and the optimum conditions were found to be 20% tin chloride and 1% antimony chloride in the dip solution and an annealing temperature of 500°C. Further investigation showed that the rate of withdrawal from the dip solution, the number of coatings of the dip solution, and the addition of oxygen during annealing did not significantly affect anode performance. Under optimum preparation conditions, Ti/SnO 2 -Sb 2 O 5 anodes showed no loss of performance over 1,280 cycles of cyclic voltammetry, suggesting that their performance can be sustained over long periods of use. The result of this research is a simple preparation method for effective and long-lived Ti/SnO 2 -Sb 2 O 5 anodes; this method could be easily adopted by a utility for pilot-or full-scale disinfection of water and wastewater and the treatment of industrial waste streams.

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“…Among the products of incomplete oxidation of aniline, dianiline, anilinophenol, azobenzene and maleic acid were found. Consecutive-parallel pathways of oxidation of aniline and phenol (in more or less detail regarding intermediates) including the direct pathway to carbon dioxide and the ones of successive formation and reoxidation of intermediate compounds are discussed elsewhere [10,11,13,14,24,25]. In order to characterize a catalytic activity, we used such parameters as conversions of phenol and aniline, as well as selectivity toward carbon dioxide formation.…”

Section: Resultsmentioning

confidence: 99%

Catalysts Ru–CeO2/Sibunit for catalytic wet air oxidation of aniline and phenol

et al. 2005

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Catalytic properties of carbon materials Sibunit (commercial samples) and ceria-promoted precious metals (Ru, Pt, Pd) supported on carbon were studied in the processes of catalytic wet air oxidation (CWAO) of aniline and phenol at elevated pressures and temperatures (T ¼ 433-473 K, P O2 ¼ 0.3-1.0 MPa). It was found that the activity increases when the catalyst is pretreated with hydrogen peroxide. An efficiency of Ru-CeO 2 /Sibunit catalyst with a low ruthenium content (~0.6% Ru) for deep cleaning of polluted waters is demonstrated.

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Aniline degradation by electrocatalytic oxidation

Cited by 74 publications

References 16 publications

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Optimization of Ti/SnO2–Sb2O5 anode preparation for electrochemical oxidation of organic contaminants in water and wastewater

Catalysts Ru–CeO2/Sibunit for catalytic wet air oxidation of aniline and phenol

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