열산화법으로 생성된 TiO2 중간보호층이 Ti/RuO2-PdO-TiO2전극의염소발생 효율 및 내구성에 미치는 영향
Effect of Thermally Grown TiO2 Interlayer on Chlorine Evolution Efficiency and Durability of Ti/RuO2-PdO-TiO2 Electrodes
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Not only efficiency of chlorine evolution reaction (CER) but also durability namely service life is very important property in dimensional stable anode for Ballast Water Management System (BWMS) for marine ships. Many researchers have been focused on improving efficiency of CER by controlling composition, phase and surface area for a long time, but the efforts to increase durability was relatively small. In this study, we have investigated the effect of TiO2 protective interlayers on efficiency and durability of DSA electrodes. TiO2 protective interlayers were prepared by thermal oxidation at 500, 600 and 700oC on Ti substrate. And then the DSA electrodes consisting of Ti/RuO2-PdO-TiO2 were prepared by thermal decomposition method on TiO2 interlayers. The efficiencies of CER of DSA electrodes without TiO2 interlayer and with TiO2 interlayer grown at 500, 600 and 700oC were 94.19, 94.45, 84.60 and 76.75% respectively. On the otherhand, durabilities were 30, 55, 90 and 65 hours respectively. In terms of industrial aspect, the performance of DSA is considered high efficiency and durability which can correspond to total production of chlorine. If we considered the performance index of DSA as the product of efficiency and durability, performance indices could be recalculated as 28.26, 50.85, 76.14 and 49.89 respectively. As the thermal oxidation temperature increasing, life time were increased remarkerbly, while efficiency of CER was decreased slightly. As a result, DSA electrode with TiO2 interlayer grown at 600oC has shown about 2.7 times performace of original DSA electrode without TiO2 interlayer.
Abstract
Not only efficiency of chlorine evolution reaction (CER) but also durability namely service life is very important property in dimensional stable anode for Ballast Water Management System (BWMS) for marine ships. Many researchers have been focused on improving efficiency of CER by controlling composition, phase and surface area for a long time, but the efforts to increase durability was relatively small. In this study, we have investigated the effect of TiO2 protective interlayers on efficiency and durability of DSA electrodes. TiO2 protective interlayers were prepared by thermal oxidation at 500, 600 and 700oC on Ti substrate. And then the DSA electrodes consisting of Ti/RuO2-PdO-TiO2 were prepared by thermal decomposition method on TiO2 interlayers. The efficiencies of CER of DSA electrodes without TiO2 interlayer and with TiO2 interlayer grown at 500, 600 and 700oC were 94.19, 94.45, 84.60 and 76.75% respectively. On the otherhand, durabilities were 30, 55, 90 and 65 hours respectively. In terms of industrial aspect, the performance of DSA is considered high efficiency and durability which can correspond to total production of chlorine. If we considered the performance index of DSA as the product of efficiency and durability, performance indices could be recalculated as 28.26, 50.85, 76.14 and 49.89 respectively. As the thermal oxidation temperature increasing, life time were increased remarkerbly, while efficiency of CER was decreased slightly. As a result, DSA electrode with TiO2 interlayer grown at 600oC has shown about 2.7 times performace of original DSA electrode without TiO2 interlayer.
참고문헌 (21)
- H. Over, "Atomic scale insights into electrochemical versus gas phase oxidation of HCl over <TEX>$RuO_{2}$<", TEX>-based catalysts: A comparative review, 2013, pp.93, 314~333
- Rasmus K.B. Karlsson, "Selectivity between oxygen and chlorine evolution in the chloralkali and chlorate processes", Chemical reviews, 116, pp.2982~3028 (2016)[DOI]
- S. Trasatti, "Electrocatalysis: understanding the success of <TEX>$DSA^{(R)}$<", TEX>, 2000, pp.45, 2377~2385
- S. Trasatti, "Electrocatalysis in the anodic evolution of oxygen and chlorine", Electrochimica Acta, 29, pp.1503~1512 (1984)[DOI]
- S. Trasatti, "Progress in the understanding of the mechanism of chlorine evolution at oxide electrodes", Electrochimica acta, 32, pp.369~382 (1987)[DOI]
- S. Trasatti, "Work function, electronegativity, and electrochemical behaviour of metals: II. Potentials of zero charge and "electrochemical" work functions", Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 33, pp.351~378 (1971)[DOI]
- K. Xiong, "Sn and Sb co-doped RuTi oxides supported on <TEX>$TiO_2$<", TEX> nanotubes anode for selectivity toward electrocatalytic chlorine evolution, 2013, pp.43, 847~854
- D.F. Abbott, "Selective Chlorine Evolution Catalysts Based on Mg-Doped Nanoparticulate Ruthenium Dioxide", Journal of The Electrochemical Society, 162, pp.H23~H31 (2015)[DOI]
- K. Cho, "<TEX>$Bi_xTi_{1-x}O_z$<", TEX> Functionalized Heterojunction Anode with an Enhanced Reactive Chlorine Generation Efficiency in Dilute Aqueous Solutions, 2015, pp.27, 2224~2233
- R. Palma-Goyes, "The Effects of <TEX>$ZrO_2$<", TEX> on the Electrocatalysis to Yield Active Chlorine Species on <TEX>$Sb_2O_5$<, <TEX>$RuO_2$<, pp.TEX> Anodes, Journal of The Electrochemical Society[DOI]
- N. Menzel, "Dimensionally Stable Ru", Ir, TEX>-Anodes with Tailored Mesoporosity for Efficient Electrochemical Chlorine Evolution, pp.ACS Catalysis, 2013[DOI]
- K. Xiong, "In situ growth of <TEX>$RuO_2$<", TEX>-<TEX>$TiO_2$<, Journal of Applied Electrochemistry, pp.2016, 46[DOI]
- R. Chen, "Wavelet analysis of chlorine bubble evolution on electrodes with different surface morphologies", Electrochemistry Communications, 22, pp.16~20 (2012)[DOI]
- J. Ribeiro, "Investigation of the electrical properties, charging process, and passivation of <TEX>$RuO_2$<", TEX>-<TEX>$Ta_2O_5$<, Journal of Electroanalytical Chemistry, pp.2006, 592[DOI]
- D. Shao, "An improved stable Ti", Sb-<TEX>$SnO_2$<, RSC Advances, pp.2014, 4[DOI]
- J.Z. Hu, "Stable Ti", <TEX>$IrO_2$<, TEX> Evolution, pp.Materials Science Forum, 2011
- C.A. Huang, "Electrochemical behavior of <TEX>$IrO_2$<", TEX>-<TEX>$Ta_2O_5$<, Ti anodes prepared with different surface pretreatments of Ti substrate, pp.Surface and Coatings Technology, 2017[DOI]
- N. Wetchakun, "Influence of calcination temperature on anatase to rutile phase transformation in <TEX>$TiO_2$<", TEX> nanoparticles synthesized by the modified sol-gel method, 2012, pp.82, 195~198
- J.J.M. Vequizo, "Trappinginduced enhancement of photocatalytic activity on brookite <TEX>$TiO_2$<", TEX> powders: comparison with anatase and rutile <TEX>$TiO_2$<, ACS Catalysis, pp.2017, 7[DOI]
- A. Bandi, "Electrochemical behaviour of some oxides in ternary mixture coatings", Journal of electroanalytical chemistry and interfacial electrochemistry, 157, pp.241~250 (1983)
- D.A. Hanaor, "Review of the anatase to rutile phase transformation", Journal of Materials science, 46, pp.855~874 (2011)[DOI]