Electrochemical mineralization of pentachlorophenol (PCP) by Ti/SnO2–Sb electrodes

Niu, Junfeng; Bao, Yueping; Li, Yang; Chai, Zhen

doi:10.1016/j.chemosphere.2013.04.035

Cited by 87 publications

(39 citation statements)

References 45 publications

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“…Similar results have also been reported by many researchers [48,50,51]. However, it was found that the energy consumption (EC) significantly decreased with the increase in the EL (Table 2).…”

Section: Effect Of Elsupporting

confidence: 92%

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Bonyadinejad

Sarafraz

Khosravi

et al. 2015

Korean J. Chem. Eng.

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The decolorization and degradation of the synthetic aqueous solution of the Acid Orange 10 (AO10) dye on Ti/PbO 2 anode were investigated using the response surface methodology based on central composite design with three variables: current density, pH, and supporting electrolyte concentration. The Ti/PbO 2 electrode was prepared by the electrochemical deposition method. The optimum conditions for AO10 decolorization in synthetic dye solution were electrolyte concentration of 117.04 mM, pH of 12.05, and current density of 73.64 mA cm −2 . The results indicated that the most effective factor for AO10 degradation was current density. Furthermore, the color removal efficiency significantly increased with increasing current density. To measure AO10 mineralization under optimum conditions, the chemical oxygen demand (COD) and total organic carbon (TOC) removal were evaluated. Under these conditions, decolorization was completed and 63% removal was recorded for COD and 60% for TOC after 100 min of electrolysis.

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Section: Effect Of Elsupporting

confidence: 92%

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Bonyadinejad

Sarafraz

Khosravi

et al. 2015

Korean J. Chem. Eng.

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“…In recent years, electrochemical oxidation of aqueous wastes containing non-biodegradable organics such as phenol 1 , lignin 2 , 4-chlorophenol 3 , pentachlorophenol 4 , perfluorocarboxylic acids 5 , has been extensively studied, which attributed to its many distinctive advantages 6 including environmental compatibility, versatility energy efficiency, lowvolume application, and amenability to automation [6][7][8] . For electrochemical oxidation, it is learnt that anode material plays a critical role on the organic pollutants degradation 9 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel porous Ti/SnO₂–Sb₂O₃–CNT/PbO₂electrode for the anodic oxidation of phenol wastewater

et al. 2015

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a Porous Ti/SnO2-Sb2O3-CNT/PbO2 electrodes were successfully fabricated using thermal decomposition technique and electro-deposition technologies. Characterization experiments including Scanning electron microscopy (SEM), Energydispersive spectroscopy (EDS), X-ray diffraction (XRD), Cyclic voltammertry (CV), Electrochemical Impedance Spectroscopy (EIS) and accelerated life time test was performed to evaluate the effect of CNT-doped SnO2-Sb2O3 intermediate layer on PbO2 electrode. The results showed that CNT could be doped into the SnO2-Sb2O3 intermediate layer by thermal decomposition. Compared with porous Ti/SnO2-Sb2O3 substrate, CNT-doped induced the substrate surface forming a fibrous structure, it means that porous Ti/SnO2-Sb2O3-CNT substrate would provide more active sites for PbO2 deposition and could make a compact and fine surface coating. Besides, the CNT modified electrode had higher active surface area and higher electrochemical activity than without CNT doped. The life of porous Ti/SnO2-Sb2O3-CNT/PbO2 (296h) was 1.38 times as much as that of porous Ti/SnO2-Sb2O3/PbO2 electrode (214h). Electro-catalytic oxidation of phenol in aqueous solution was studied to evaluate the electrochemical oxidation ability in environment science. Porous Ti/SnO2-Sb2O3-CNT/PbO2 electrode displayed not only excellent electro-catalytic performance but also low energy consumption using phenol as a model organic pollutant. The porous Ti/SnO2-Sb2O3-CNT/PbO2 electrode has higher kinetic rate constant and chemical oxygen demand (COD), which is 1.73 and 1.09 times those of the porous Ti/SnO2-Sb2O3/PbO2 electrode, respectively. Moreover, CNT-doped can further increase the hydroxyl radical (·OH) generation capacity. All these results illustrated that porous Ti/SnO2-Sb2O3-CNT/PbO2 electrode for pollutants degradation and had a great potential application.

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“…The photo-catalytic process of PCP was divided into the following three steps: Firstly, hydroxyl radicals attacked benzene ring, the C-Cl was cut off, most of the M a n u s c r i p t 11 benzene rings had been opened; Secondly, intermediate products such as aromatic ketone had appeared; Thirdly, the resulting small molecules such as H 2 O, CO 2 and HCl had generated. Fig.11, pH values during the degradation increase in 60 minutes, which meant there were some intermediate products such as aromatic ketone and chorohydrocarbon with weak acid [29] . After 90 min, pH values fell sharply in both FeOOH/ZnO/MMT and FeOOH/MMT systems, which indicated intermediate products had mineralized to H 2 O, CO 2 , HCl.…”

Section: Elementmentioning

confidence: 98%

“…Fig.12 showed that in ZnO/MMT system, TOC value changed a little in 150 min. But in both FeOOH and FeOOH/ZnO systems, TOC M a n u s c r i p t value decreased sharply after 90 min, which demonstrated that FeOOH has an insignificant effect in the photo-catalytic degradation in visible light [29] and there were intermediate products such as aromatic ketone had mineralized to H 2 O, CO 2 , HCl [30] . The results were coincided well with FTIR results.…”

Section: Elementmentioning

confidence: 99%

Preparation and photo-catalytic activities of FeOOH/ZnO/MMT composite

Zhou

Liu

2015

Applied Surface Science

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Electrochemical mineralization of pentachlorophenol (PCP) by Ti/SnO2–Sb electrodes

Cited by 87 publications

References 45 publications

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Preparation and characterization of a novel porous Ti/SnO₂–Sb₂O₃–CNT/PbO₂electrode for the anodic oxidation of phenol wastewater

Preparation and photo-catalytic activities of FeOOH/ZnO/MMT composite

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Electrochemical mineralization of pentachlorophenol (PCP) by Ti/SnO2–Sb electrodes

Cited by 87 publications

References 45 publications

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Electrochemical degradation of the Acid Orange 10 dye on a Ti/PbO2 anode assessed by response surface methodology

Preparation and characterization of a novel porous Ti/SnO2–Sb2O3–CNT/PbO2electrode for the anodic oxidation of phenol wastewater

Preparation and photo-catalytic activities of FeOOH/ZnO/MMT composite

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Preparation and characterization of a novel porous Ti/SnO₂–Sb₂O₃–CNT/PbO₂electrode for the anodic oxidation of phenol wastewater