Performance of Gd-doped Ti-based Sb-SnO2 anodes for electrochemical destruction of phenol

Feng, Yujie; Cui, Yu-Hong; Logan, Bruce E.; Liu, Zheng-Qian

doi:10.1016/j.chemosphere.2007.07.083

Cited by 119 publications

(71 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, when doped with Ar, B, Bi, F, P, or Sb, its conductivity increases considerably [1][2][3][4][5][6]. There have also been attempts to use less common elements as doping agents, like Ir, Rh, and various lanthanides [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 96%

Anodic oxidation of organic pollutants on a Ti/SnO2–Sb2O4 anode

2011

View full text Add to dashboard Cite

A Ti/SnO 2 -Sb 2 O 4 electrode was prepared by alternate Sn and Sb electrodepositions using the thermoelectrochemical method. The chemical, electrochemical, and structural characterization of the electrode was performed and it was tested in the anodic oxidation of several pollutants, phenol, ibuprofen, acid orange 7 (AO7), and diclofenac, all in aqueous 0.035 M Na 2 SO 4 solutions at current densities of 10 and 20 mA cm -2 . After the 24 h assay, removal of chemical oxygen demand, total organic carbon (TOC) and absorbance were very high, especially at the higher current density. TOC removals presented the lowest value. However, after 24 h at 20 mA cm -2 , TOC removals were: phenol-94%; ibuprofen-83%; AO7-88%; and diclofenac-73%. Combustion efficiency and instantaneous and mineralization current efficiencies were also determined.

show abstract

Section: Introductionmentioning

confidence: 96%

Anodic oxidation of organic pollutants on a Ti/SnO2–Sb2O4 anode

2011

View full text Add to dashboard Cite

show abstract

“…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. SnO 2 is an n-type semiconductor with a wide band gap, and its electrical conductivity is due to a modest level of non-stoichiometric impurities [12]. Modification of SnO 2 electrode by addition of selected dopants has been applied to reduce the band gap and increase the conductivity as well as electrocatalytic activity [13].…”

Section: Introductionmentioning

confidence: 99%

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

Yao

Jiao

et al. 2015

J Solid State Electrochem

View full text Add to dashboard Cite

Electrocatalytic oxidation is a promising process for degrading toxic and biorefractory organic pollutants in wastewater treatment. Selection of electrode materials is crucial for electrochemical oxidation process. In this study, Ti/F-PbO 2 and Ti/Sb-SnO 2 electrodes were chosen to compare their electrocatalytic characterization, which were prepared by electrodeposition and thermal decomposition method, respectively. The surface morphology and crystal structure of two electrodes were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The linear polarization curves show that Ti/Sb-SnO 2 electrodes possess higher oxygen evolution overpotential than Ti/F-PbO 2 electrodes. But the stability and corrosion resistance ability of Ti/F-PbO 2 electrode was higher than that of Ti/Sb-SnO 2 electrode. The electrocatalytic activity of Ti/F-PbO 2 and Ti/Sb-SnO 2 electrodes was examined for the electrochemical oxidation of malachite green (MG). The bulk electrolysis shows that the Ti/SbSnO 2 electrodes exhibit the higher electrocatalytic activity for the degradation of MG than Ti/F-PbO 2 electrodes, and the degradation process is good fitting for the pseudo-first order reaction. The higher electrocatalytic activity of Ti/ Sb-SnO 2 electrodes can be attributed to the higher oxygen evolution overpotential.

show abstract

“…Existem diversos métodos de preparação de anodos do tipo DSA (anodos dimensionalmente estáveis), tais como, processo sol-gel [15,30,31], eletrodeposição [8,13,32], decomposição térmica [2,14,21,33] e solução precursora, conhecido como método Pechini [3,11,34,35,36]. O método da decomposição térmica é um dos processos mais utilizados para obtenção de anodos do tipo DSA.…”

Section: Introductionunclassified

Influência da temperatura de calcinação na resistência à corrosão do eletrodo de Ti/SnO2-Sb para eletrooxidação de fenóis em meio de cloreto

Santos¹,

Afonso²,

Dutra³

2009

Matéria (Rio J.)

View full text Add to dashboard Cite

RESUMONeste trabalho foi investigada a eficiência e a resistência à corrosão do eletrodo de Ti/SnO 2 dopado com Sb, preparado pelo método Pechini, para oxidação de fenol em meio de cloreto. Os resultados mostraram que sua resistência à corrosão depende da temperatura de calcinação, da morfologia do revestimento e do controle do pH durante a eletrólise. Após 60 min de eletrólise em solução 0,34 mol.L -1 de NaCl na presença de 100 mg.L -1 de fenol a uma densidade de corrente fixa de 10 mA.cm -2 , com pH controlado entre 7 e 9, as micrografias de MEV mostraram que apenas o eletrodo calcinado 600 o C não sofreu corrosão. Uma redução de 90% da absorbância do fenol (269,5 nm) foi obtida após 60 min de eletrólise a uma densidade de corrente fixa de 10 mA.cm -2 usando o eletrodo calcinado a 600 o C. Palavras-chaves:Eletrodo de Ti/SnO 2 -Sb, método Pechini, temperatura de calcinação, oxidação de fenol. The influence of calcination temperature on the corrosion resistance of a Ti/Sno 2 -Sb electrode for phenol electrooxidation in chloride medium ABSTRACTIn this paper the influence of calcination temperature on the corrosion resistance of a Ti/SnO 2 -Sb electrode, prepared according to Pechini's method, and its efficiency for phenol oxidation in chloride medium was investigated. The results showed that the corrosion resistance depends on calcination temperature, coating structure and pH control during the electrolysis. After 60 min of electrolysis of a 0.34 mol·L -1 NaCl solution containing 100 mg·L -1 phenol, at 10 mA·cm -2 , keeping pH between 7 and 9, only the electrode calcined at 600 o C remained unchanged. A reduction of 90% of the phenol absorbance band (269.5 nm) was achieved after 60 min of electrolysis, at 10 mA·cm -2 , with the Ti/SnO 2 -Sb electrode calcined at 600 o C.

show abstract

Performance of Gd-doped Ti-based Sb-SnO2 anodes for electrochemical destruction of phenol

Cited by 119 publications

References 25 publications

Anodic oxidation of organic pollutants on a Ti/SnO2–Sb2O4 anode

Anodic oxidation of organic pollutants on a Ti/SnO2–Sb2O4 anode

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

Influência da temperatura de calcinação na resistência à corrosão do eletrodo de Ti/SnO2-Sb para eletrooxidação de fenóis em meio de cloreto

Contact Info

Product

Resources

About