Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology
Authorized Users Only
2015
Authors
Petrović, SrđanStojadinović, Stevan D.J.
Rožić, Ljiljana
Radić, Nenad
Grbić, Boško
Vasilić, Rastko
Article (Published version)
Metadata
Show full item recordAbstract
Plasma electrolytic oxidation of titanium in 12-tungstosilicic acid solution was investigated as a model reaction. The influence of the process parameters (concentration of 12-tungstosilicic acid solution, current density, and time) on the selected process response (efficiency of the methyl orange photodecolorization on the TiO2/WO3 coatings) was studied. A mathematical model was developed using a second-order response surface model with a central composite design incorporating the above-mentioned process parameters. The statistical analysis of experimental data indicates that a concentration of 12-tungstosilicic acid solution; process time, interaction between concentration and process time, and interaction between concentration and quadratic of process time have a significant effect on the methyl orange photodecolorization. Besides, the results show that obtained data were adequately fitted into the second-order polynomial model, since the calculated model F value (39.28) is higher t...han the critical F value. The values of coefficient of determination (R-2 = 0.960) and adjusted coefficient of determination (R-Adj.(2) = 0.937) are close to 1, indicating a high correlation between the observed and the predicted values. This model can also be useful for setting an optimum value of the process parameters for achieving the maximum efficiency of the methyl orange photodecolorization. Under the optimum conditions established in the region of experimentation (C = 1.14 . 10(-3) M, j = 153 mA/cm(2), and t = 58.9 s), a 38.6% (test duration of 8 h) efficiency of the methyl orange photodecolorization is obtained.
Keywords:
TiO2/WO3 coatings / Plasma electrolytic oxidation / Response surface methodology / Statistical experimental design / PhotodecolorizationSource:
Surface and Coatings Technology, 2015, 269, 250-257Publisher:
- Elsevier
Funding / projects:
- Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions (RS-172015)
- Graphitic and Inorganic Low-dimensional Nanostructures (RS-171035)
- The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-172022)
- Chemical and structural designing of nanomaterials for application in medicine and tissue engineering (RS-172026)
- The study of physicochemical and biochemical processes in living environment that have impacts on pollution and the investigation of possibilities for minimizing the consequences (RS-172001)
DOI: 10.1016/j.surfcoat.2014.12.026
ISSN: 0257-8972
WoS: 000353747000029
Scopus: 2-s2.0-84933052464
Collections
Institution/Community
IHTMTY - JOUR AU - Petrović, Srđan AU - Stojadinović, Stevan D.J. AU - Rožić, Ljiljana AU - Radić, Nenad AU - Grbić, Boško AU - Vasilić, Rastko PY - 2015 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1752 AB - Plasma electrolytic oxidation of titanium in 12-tungstosilicic acid solution was investigated as a model reaction. The influence of the process parameters (concentration of 12-tungstosilicic acid solution, current density, and time) on the selected process response (efficiency of the methyl orange photodecolorization on the TiO2/WO3 coatings) was studied. A mathematical model was developed using a second-order response surface model with a central composite design incorporating the above-mentioned process parameters. The statistical analysis of experimental data indicates that a concentration of 12-tungstosilicic acid solution; process time, interaction between concentration and process time, and interaction between concentration and quadratic of process time have a significant effect on the methyl orange photodecolorization. Besides, the results show that obtained data were adequately fitted into the second-order polynomial model, since the calculated model F value (39.28) is higher than the critical F value. The values of coefficient of determination (R-2 = 0.960) and adjusted coefficient of determination (R-Adj.(2) = 0.937) are close to 1, indicating a high correlation between the observed and the predicted values. This model can also be useful for setting an optimum value of the process parameters for achieving the maximum efficiency of the methyl orange photodecolorization. Under the optimum conditions established in the region of experimentation (C = 1.14 . 10(-3) M, j = 153 mA/cm(2), and t = 58.9 s), a 38.6% (test duration of 8 h) efficiency of the methyl orange photodecolorization is obtained. PB - Elsevier T2 - Surface and Coatings Technology T1 - Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology VL - 269 SP - 250 EP - 257 DO - 10.1016/j.surfcoat.2014.12.026 ER -
@article{ author = "Petrović, Srđan and Stojadinović, Stevan D.J. and Rožić, Ljiljana and Radić, Nenad and Grbić, Boško and Vasilić, Rastko", year = "2015", abstract = "Plasma electrolytic oxidation of titanium in 12-tungstosilicic acid solution was investigated as a model reaction. The influence of the process parameters (concentration of 12-tungstosilicic acid solution, current density, and time) on the selected process response (efficiency of the methyl orange photodecolorization on the TiO2/WO3 coatings) was studied. A mathematical model was developed using a second-order response surface model with a central composite design incorporating the above-mentioned process parameters. The statistical analysis of experimental data indicates that a concentration of 12-tungstosilicic acid solution; process time, interaction between concentration and process time, and interaction between concentration and quadratic of process time have a significant effect on the methyl orange photodecolorization. Besides, the results show that obtained data were adequately fitted into the second-order polynomial model, since the calculated model F value (39.28) is higher than the critical F value. The values of coefficient of determination (R-2 = 0.960) and adjusted coefficient of determination (R-Adj.(2) = 0.937) are close to 1, indicating a high correlation between the observed and the predicted values. This model can also be useful for setting an optimum value of the process parameters for achieving the maximum efficiency of the methyl orange photodecolorization. Under the optimum conditions established in the region of experimentation (C = 1.14 . 10(-3) M, j = 153 mA/cm(2), and t = 58.9 s), a 38.6% (test duration of 8 h) efficiency of the methyl orange photodecolorization is obtained.", publisher = "Elsevier", journal = "Surface and Coatings Technology", title = "Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology", volume = "269", pages = "250-257", doi = "10.1016/j.surfcoat.2014.12.026" }
Petrović, S., Stojadinović, S. D.J., Rožić, L., Radić, N., Grbić, B.,& Vasilić, R.. (2015). Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology. in Surface and Coatings Technology Elsevier., 269, 250-257. https://doi.org/10.1016/j.surfcoat.2014.12.026
Petrović S, Stojadinović SD, Rožić L, Radić N, Grbić B, Vasilić R. Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology. in Surface and Coatings Technology. 2015;269:250-257. doi:10.1016/j.surfcoat.2014.12.026 .
Petrović, Srđan, Stojadinović, Stevan D.J., Rožić, Ljiljana, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology" in Surface and Coatings Technology, 269 (2015):250-257, https://doi.org/10.1016/j.surfcoat.2014.12.026 . .