Abstract
In this study IrO2 (Iridium oxide) was coated onto a titanium plate anode from a dilute (50 mg/10 ml) IrCl3×H2O salt solution. Coating was done at high temperature (550∘C) using thermal decomposition. Surface morphology and characteristics of coated surface of Ti/IrO2 anode were examined by FESEM and XRD. The coated anode was applied for electrochemical removal of organic pollutants from synthetic water samples in 100 mL compartment of batch electrochemical cell. About 50% COD removal was obtained at anode prepared with low Ir content solution while 72% COD removal was obtained with anode prepared at high Ir content. Maximum COD removal was obtained at 10 mA/cm2 current density.
References
[1] Huang, Y. S., Liau, P.C., Growth and characterization of IrO2 single crystals, Chin. J. Phys. 1987, 25, 1, 232-242Search in Google Scholar
[2] Chen, X., Chen, G., Yue. P. L., IrOx-Sb2O5-SnO2 anode for O2evolution with low Ir content, J. Phys. Chem. B 2001, 105, 4623-462810.1021/jp010038dSearch in Google Scholar
[3] Ortiz, P.I., De Paulia,C.P., Trasatti, S., Composite materials for electrocatalysis: Ti/(SnO2 + IrO2). Surface and electrocatalytic properties studied by impedance and Cl2 evolution, J. New.Mat. Electrochem. Syst. 2004, 7, 153-159Search in Google Scholar
[4] Yaqub, A., Isa, M. H. Kutty, S.R.M., Ajab, H., Electrochemical degradation of pahs in produced water using Ti/Sb2O5-SnO2- IrO2 Anode. Electrochemistry, 2014, 82, 979-98410.5796/electrochemistry.82.979Search in Google Scholar
[5] Wang, S., Xu, H., Yao, P., Chen, X., Ti/RuO2-IrO2-SnO2-Sb2O5 Anodes for Cl2 evolution from seawater. Electrochemistry, 2012, 80, 507-51110.5796/electrochemistry.80.507Search in Google Scholar
[6] Yaqub, A., Isa, M. H. Kutty, S.R.M., Ajab, H., Surface Characteristics of Ti/IrO2 Anode Material and its Electrocatalytic Properties for Polycyclic Aromatic Hydrocarbons (PAHs) Degradation in Aqueous Solution, J. New. Mat. Electrochem. Syst. 2014, 17, 39- 4410.14447/jnmes.v17i1.442Search in Google Scholar
[7] Tran, L.H. Drogui, P., Mercier, G., Blais, J.F., Electrolytic oxidation of polynuclear aromatic hydrocarbons from creosote solution using Ti/IrO2 and Ti/SnO2 circular mesh electrodes. J. Environ. Eng., 2009), 135, 1051-106210.1061/(ASCE)EE.1943-7870.0000064Search in Google Scholar
[8] Fierro, S., Nagel, T. Comninellis, C. Investigation of the oxygen evolution reaction on Ti/IrO2 electrodes using isotope labelling and on-linemass spectrometry, Electrochem. Commun. 2007, 9, 1969-197410.1016/j.elecom.2007.05.008Search in Google Scholar
[9] Reyter, D. Belanger, D. Roue, L. Nitrate removal by a paired electrolysis on copper and Ti/IrO2 coupled electrodes-influence of the anode/cathode surface area ratio, Water Res., 2010, 441918-192610.1016/j.watres.2009.11.037Search in Google Scholar PubMed
[10] Liu, Y., Li L., Goel, R., Kinetic study of electrolytic ammonia removal using Ti/IrO2 as anode under different experimental conditions, J. Hazard. Mater., 2009, 167, 959-96510.1016/j.jhazmat.2009.01.082Search in Google Scholar PubMed
[11] Haner, J, Bejan D, Bunce, N.J., Electrochemical oxidation of sulfide ion at a Ti/IrO2-Ta2O5 anode in the presence and absence of naphthenic acids, J. Appl. Electrochem. 2009, 39, 1733-173810.1007/s10800-009-9873-7Search in Google Scholar
[12] Ji. Hu, J. Zhang, H. Meng, Cao, C., Microstructure, electrochemical surface and electrocatalytic properties of IrO2+Ta2O5 oxide electrodes, J. Mater.Sci., 2003, 38, 705-71210.1023/A:1021840426997Search in Google Scholar
[13] Yan, Z., Li, G., Wang, J., Zhang Z., Feng, Z., Tang, Zhang, M. R. Electro-catalytic study of IrO2 single bond Ta2O5 coated anodes with pretreated titanium substrates, J. Alloys Compd., 2016, 680, 60-6610.1016/j.jallcom.2016.04.090Search in Google Scholar
[14] Martínez-Huitle, C. A., M. A. Quiroz, C. Comninellis, S. Ferro,Battisti, A.D., Electrochemical Incineration of Chloranilic Acid Using Ti/IrO2, Pb/PbO2 and Si/BDD Electrodes. Electrochim. Acta, 2004, 50, 949-95610.1016/j.electacta.2004.07.035Search in Google Scholar
[15] Li, M. Feng C., Zhang Z., Sugiura, N., Eflcient electrochemical reduction of nitrate to nitrogen using Ti/IrO2-Pt anode and different cathodes, Electrochim, Acta, 2009, 54, 4600-460610.1016/j.electacta.2009.03.064Search in Google Scholar
[16] Li, M., Feng, C., Hu, W., Zhang, Z., Sugiura, N., Electrochemical degradation of phenol using electrodes of Ti/RuO2 Pt and Ti/IrO2-Pt, J. Hazard. Mater., 2009, 162, 455-62010.1016/j.jhazmat.2008.05.063Search in Google Scholar PubMed
[17] Audichon, T., Napporn T.W., Canaff C., Morais C., Comminges C., Kokoh K.B., IrO2 Coated on RuO2 as Eflcient and Stable Electroactive Nanocatalysts for Electrochemical Water Splitting, J. Phys. Chem. C, 2016, 120, 2562-257310.1021/acs.jpcc.5b11868Search in Google Scholar
[18] Cuevas ,O., Herrada, R.A., Corona, J.L., Olvera, M.G., Sepúlveda- Guzmán, S., Sirés, I., Bustos, E. Assessment of IrO2-Ta2O5|Ti electrodes for the electrokinetic treatment of hydrocarboncontaminated soil using different electrode arrays. Electrochim. Acta, 2016, 208, 282-28710.1016/j.electacta.2016.05.045Search in Google Scholar
[19] Yaqub, A., Ajab, H., Isa, M.H., Jusoh, H., Junaid, M., Farooq, R., Effect of ultrasound and electrode material on electrochemical treatment of industrial wastewater, J. New. Mater. Electrochem. Syst., 2012, 15, 289-29210.14447/jnmes.v15i4.49Search in Google Scholar
[20] Yaqub, A., Ajab, H., Applications of sonoelectrochemistry in wastewater treatment system. Rev. Chem. Eng., 2013, 29, 123- 13010.1515/revce-2012-0017Search in Google Scholar
[21] Yaqub, A., Ajab, H., Khan, S., Farooq, R., Electrochemical removal of copper and lead from industrial wastewater: mass transport enhancement,Water Qual. Res. J. Can., 2009, 44, 183- 18710.2166/wqrj.2009.020Search in Google Scholar
[22] Ezechi, E. H., Isa, M. H., Kutty, S. R. M., Yaqub, A., Boron removal from produced water using electrocoagulation. Process Saf. Environ. Prot., 2014, 92, 509-51410.1016/j.psep.2014.08.003Search in Google Scholar
[23] Yaqub, A., Isa, M.H., Ajab, H., Electrochemical degradation of polycyclic aromatic hydrocarbons in synthetic solution and produced water using a Ti/SnO2-Sb2O5-RuO2 anode J. Environ. Eng., (2015)10.1061/(ASCE)EE.1943-7870.0000900Search in Google Scholar
[24] Zhang, Y., Yue, L., Teng, K., Yuan, S., Ma, H., Synthesis and characterization of RuO2 anode materials with large surface areas for oxygen evolution reaction, J. New. Mater. Electrochem. Syst., 2012, 15, 271-27610.14447/jnmes.v15i4.45Search in Google Scholar
[25] Yaqub, A., Isa, M. H., Kutty, S. R. M., Ajab, H., Kinetic Study of PAHs Degradation in Produced Water using Ti/RuO2 Anode, Appl. Mech. Mater., 2014, 567, 80-8510.4028/www.scientific.net/AMM.567.80Search in Google Scholar
[26] Panizza, M., Importance of Electrode Material in the Electrochemical Treatment of Wastewater Containing Organic Pollutants. (Editor Ch. Comninellis, G. Chen), Electrochemistry for the Environment, Springer Science, 2010.10.1007/978-0-387-68318-8_2Search in Google Scholar
[27] Awad, A. M., and NA Abdel Ghany, Electrochemical advanced oxidation of cosmetics wastewater using IrO2/Ti-modified electrode. Desalin. Water Treat., 2015, 53, 681-68810.1080/19443994.2013.848671Search in Google Scholar
[28] Yang, B., Zuo, J., Li, P., Wang, K., Yu, X., & Zhang, M., Effective ultrasound electrochemical degradation of biological toxicity and refractory cephalosporin pharmaceutical wastewater. Chem. Eng. J., 2016, 287, 30-3710.1016/j.cej.2015.11.033Search in Google Scholar
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