Fabrication of a stable Ti/TiO x H y /Sb−SnO 2 anode for aniline degradation in different electrolytes

Li, Xiaoliang; Shao, Dan; Xu, Hao; Lv, Wei; Yan, Wei

doi:10.1016/j.cej.2015.09.089

Cited by 91 publications

(41 citation statements)

References 49 publications

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“…The aniline radical or 4-amino-phenol and aniline reacted to 4-4 0 -diaminodiphenyl. The presence of 4-4 0 -diaminodiphenyl indicated the bimolecular reaction between the anilinium/aniliny radicals [18,36]. And then, 4-4 0 -diaminodiphenyl was degraded to maleic acid and further been mineralized to CO 2 and H 2 O due to its reaction with SO 4 -Å and Å OH radicals [89,90].…”

Section: Catalytic Oxidation Mechanism Of Anilinementioning

confidence: 98%

“…Advanced oxidation processes based on Å OH or Å O 2 À have been commonly used in the degradation of persistent organic pollutants in water. For example, lots of technologies have been applied to generate Å OH or Å O 2 À radicals for aniline degradation including Fenton process [6,7], photocatalysis [8][9][10], catalytic wet oxidation [11][12][13], ozonation [14][15][16] and electrochemical oxidation [17][18][19][20]. However, these technologies have several limitations such as metal leaching, low pH rang (3)(4), excessive sludge production, and the high hydrogen peroxide transportation cost [1,4].…”

Section: Introductionmentioning

confidence: 99%

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Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Huang

Zhang

et al. 2017

Chemical Engineering Journal

109

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Section: Catalytic Oxidation Mechanism Of Anilinementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Huang

Zhang

et al. 2017

Chemical Engineering Journal

109

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“…In addition, a high biodegradability could be maintained for a longer time at Ti/Sb-SnO 2 /PbO 2 anode. However, some refractory or highly toxic intermediates could be formed during the electrolysis process in NaCl electrolyte [44,45]. These highly toxic intermediates could hardly be further degraded.…”

Section: Performance Of Aniline Degradation By Selected Electrodes Inmentioning

confidence: 98%

“…Meanwhile, the toxicity of "steady process" was also occurred at the sample with darker color. Some researchers [2,16,45] found that due to the high concentration aniline, some intermediate polymers or oligomers with lower biotoxicity could be formed easily by electrochemical polymerization. In addition, the color of the intermediate polymers was dark brown.…”

Section: The Biotoxicity Measurements During Aniline Degradation Processmentioning

confidence: 99%

Electrocatalytic degradation of aniline by Ti/Sb–SnO2, Ti/Sb–SnO2/Pb3O4 and Ti/Sb–SnO2/PbO2 anodes in different electrolytes

Yan

et al. 2016

Journal of Electroanalytical Chemistry

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“…However, the short service life of the Ti/Sb-SnO 2 affects the degradation rate of pollutants. 12,13 In contrast, Ti/PbO 2 is a more promising metal oxide electrode widely used in practice due to its low cost, ease of synthesis, high electrocatalytic activity and chemical stability 14,15 . However, the leakage of Pb element in the electrolysis process may lead to the secondary water pollution.…”

mentioning

confidence: 99%

Fabrication and Characterization of a PbO₂-TiN Composite Electrode by Co-Deposition Method

Yan

2016

J. Electrochem. Soc.

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An excellent PbO 2 electrode with high electrocatalytic activity and stability was successfully fabricated by doping TiN particles through co-deposition method (marked as PbO 2 -TiN). The morphology (SEM), crystalline structure (XRD), chemical state (XPS), electrochemical performances (CV and EIS) and stability (accelerated life test) were characterized. The results showed that TiN doping could obviously improve the surface morphology of the electrode, increase the electrode current response and reduce the electrode impedance. During the electrochemical oxidation process, the PbO 2 -0.5TiN electrode showed the best performance on degradation of Acid Red G and Methylene blue (the highest removal efficiency, the lowest energy consumption and minimum Pb dissolution). The proportion of adsorbed hydroxyl oxygen for PbO 2 -0.5TiN electrode was 78.75%, which was higher than that for PbO 2 electrode (68.95%). The accelerated service lifetime of PbO 2 -0.5TiN electrode was 302 h, which was more than 3 times longer than that of PbO 2 electrode (96 h). Furthermore, a likely deactivation mechanism for lifetime enhancement of PbO 2 -0.5TiN electrode was proposed. As an attractive and promising wastewater treatment technology, electrochemical oxidation treatment (EOT) has been applied in many fields 1-4 due to its flexibility, simplicity, high efficiency, mild condition, and environmental compatibility. [5][6][7] Anode plays an important role in the electrochemical oxidation process.8 Therefore, anodes with a high catalytic activity and long service life are desired. 9,10Some of the traditional DSA electrodes, such as Ti/RuO 2 and Ti/IrO 2 with good stability exhibit little weak electrochemical oxidation ability for organics due to the low oxygen evolution potential (OEP) and the cost are high due to the noble metals 5,11 . In addition, Ti/Sb-SnO 2 has been the research focus for its high oxygen evolution potential (OEP) and strong electrochemical oxidation ability. However, the short service life of the Ti/Sb-SnO 2 affects the degradation rate of pollutants. 12,13 In contrast, Ti/PbO 2 is a more promising metal oxide electrode widely used in practice due to its low cost, ease of synthesis, high electrocatalytic activity and chemical stability 14,15 . However, the leakage of Pb element in the electrolysis process may lead to the secondary water pollution. 16 Besides, the catalytic performance of the Ti/PbO 2 electrode still has room for improvement. Thus, several efforts have been devoted to further improve its performance in the electrochemical oxidation capability and stability, including inserting the middle layer, 17 . Based on the reports above mentioned, it can be concluded that an appropriate modification can effectively improve the performances of the electrode.Titanium nitride (TiN) is a kind of novel functional materials possessing considerable excellent characteristics such as high chemical and thermal stability, good electric conductivity, corrosion resistance, wear resistance and low cost [32][33][34] . Therefor...

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Fabrication of a stable Ti/TiO x H y /Sb−SnO 2 anode for aniline degradation in different electrolytes

Cited by 91 publications

References 49 publications

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Electrocatalytic degradation of aniline by Ti/Sb–SnO2, Ti/Sb–SnO2/Pb3O4 and Ti/Sb–SnO2/PbO2 anodes in different electrolytes

Fabrication and Characterization of a PbO₂-TiN Composite Electrode by Co-Deposition Method

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Fabrication of a stable Ti/TiO x H y /Sb−SnO 2 anode for aniline degradation in different electrolytes

Cited by 91 publications

References 49 publications

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Electrocatalytic degradation of aniline by Ti/Sb–SnO2, Ti/Sb–SnO2/Pb3O4 and Ti/Sb–SnO2/PbO2 anodes in different electrolytes

Fabrication and Characterization of a PbO2-TiN Composite Electrode by Co-Deposition Method

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Fabrication and Characterization of a PbO₂-TiN Composite Electrode by Co-Deposition Method