بررسی خواص فوتوکاتالیستی لایه‌های NiO/TiO2 رشد داده شده به‌روش اکسیداسیون پلاسمای الکترولیتی/ رسوب الکتروفورتیک

نویسندگان

1 1- دانشکده مهندسی مواد و متالورژی، دانشگاه علم و صنعت ایران

2 2- پژوهشکده کاتالیست، پژوهشگاه صنعت نفت

چکیده

در این پژوهش پوشش­های کامپوزیتی متخلخل اکسیدتیتانیم/ اکسیدنیکل با استفاده از روش اکسیداسیون پلاسمای الکترولیتی/ رسوب الکتروفورتیک (PEO/EPD) تحت جریان مستقیم طی یک مرحله و زمانی کوتاه ساخته شد. هدف اصلی این پژوهش، افزایش فعالیت فوتوکاتالیستی اکسیدتیتانیم با استفاده از سطح ویژه بالا و جفت کردن آن با اکسیدنیکل است. تأثیر ولتاژ اعمالی فرایند بر ساختار فازی، ریخت (مورفولوژی) و توان فوتوکاتالیستی پوشش­ها مطالعه و بررسی­شد. ساختار فازی و ریخت­سطحی لایه­ها به­ترتیب با استفاده از تحلیل XRD و SEM بررسی شد. قدرت فوتوکاتالیستی نمونه­ها با اندازه­گیری ثابت سرعت تجزیه ماده 4-­کلروفنل روی سطح نمونه­ها تحت تابش امواج فرابنفش مطالعه شد. نتایج نشان داد که لایه­های ساخته­شده به­طور عمده از فاز آناتاز و هم‌چنین اکسیدنیکل تشکیل شده­اند که با افزایش ولتاژ مقدار این فازها در پوشش افزایش یافت. پوشش­های کامپوزیتی NiO/TiO2 توان فوتوکاتالیستی بالاتری از پوشش اکسیدتیتانیم در تجزیه ماده مدل
4-کلروفنل از خود نشان دادند. همچنین نتایج نشان داد که یک مقدار بهینه اکسیدنیکل برای حصول بیشینه توان فوتوکاتالیستی اکسیدتیتانیم وجود دارد.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of Photocatalytic Properties of NiO/TiO2 Layers Grown via PEO/EPD Method

نویسندگان [English]

  • S. Bassaki 1
  • F. Golestani Fard 1
  • R. Naghizadeh 1
  • M. Rashidzadeh 2
1 1- Department of Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran
2 2- Catalysis Research Center, Research Institute of Petroleum Industry, Tehran, Iran
چکیده [English]

Titanium dioxide-nickel oxide porous coatings were synthesized by Plasma Electrolytic Oxidation (PEO)/ ElectroPhoretic Deposition (EPD) in one step and within a short time. The main purpose of this research was to increase photocatalytic activity of titanium oxide by increasing surface area and coupling of titanium oxide with nickel oxide. Applied voltage effects on phase structure, surface morphology and photocatalytic efficiency of coatings were studied. Phase structure and surface morphology of the synthesized catalysts were investigated by XRD and SEM, respectively. Photocatalytic efficiency of the samples was studied through measuring the decomposition rate of 4-chlorophenol. The results showed that the coatings mainly consisted of anatase and nickel oxide phases whose amounts in coatings increased with the voltage. There was an enhancement of the photocatalytic efficiency in TiO2/NiO composite coatings compared with TiO2 coatings. Besides, there was an optimum amount of NiO to reach maximum photocatalytic efficiently.

کلیدواژه‌ها [English]

  • /NiO coatings
  • Plasma Electrolytic Oxidation/Electrophoretic Deposition (PEO/EPD) method
  • photocatalytic activity
Bhatkhande, D.S., Pangarkar, V.G. and Beenackers, A.A.C.M., \"Photocatalytic Degradation for Environmental Applications– A Review\", Journal of Chemical Technology & Biotechnology, Vol. 77,
pp. 102-116, 2002.
2. Mital, G.S. and Manoj, T., \"A Review of TiO2 Nanoparticles\", chinese science bulletin, Vol. 56,
pp. 1639-1657, 2011.
3. Chen, C.J., Liao, C.H, Hsu, K.C., Wu, Y.T. and Wu, J.C.S., \"P-N Junction Mechanism on Improved NiO/TiO2 Photocatalyst\", Catalysis Communications, Vol. 12, pp. 1307-1310, 2011.
4. Shifu, C., Yunguang, Y. and Wei, L., \"Preparation, Characterization and Activity Evaluation of
TiN/F-TiO2 Photocatalyst\", Journal of Hazardous Materials, Vol. 186, pp. 1560-1567, 2010.
5. Bayati, M.R., Molaei, R., Zargar, H.R. , Kajbafvala, A. and Zanganeh, S., \"A Facile Method to Grow
V-Doped TiO2 Hydrophilic Layers with Nano-Sheet Morphology\", Materials Letters, Vol. 64, pp. 2498-2501, 2010.
6. Farhangi, N., Chowdhury, R.R., Medina-Gonzalez, Y., Ray, M.B. and Charpentier, P.A., \"Visible Light Active Fe Doped TiO2 Nanowires Grown on Graphene Using Supercritical CO2\", Applied Catalysis B: Environmental, Vol. 110, pp. 25-32, 2011.
7. Khan, M., Xu, J., Chen, N. and Cao, W., \"Electronic and Optical Properties of Pure and Mo Doped Anatase TiO2 Using GGA and GGA+U Calculations\", Physica B: Condensed Matter, Vol. 407, pp. 3610-3616, 2012.
8. Salami, N., Bayati, M.R., Golestani-Fard, F. and Zargar, H.R., \"UV and Visible Photodecomposition of Organic Pollutants over Micro Arc Oxidized Ag-Activated TiO2 Nanocrystalline Layers\", Materials Research Bulletin, Vol. 47, pp. 1080-1088, 2012.
9. Yao, Z., Jia, F., Tian, S., Li, C., Jiang, Z. and Bai, X., \"Microporous Ni-Doped TiO2 Film Photocatalyst by Plasma Electrolytic Oxidation\", Applied Materials & Interfaces, Vol. 2, pp. 2617-2622, 2010.
10. Lai, Y.K., Huangc, J.Y., Zhanga, H.F., Subramaniamb, V.P., Tangb, Y.X., Gongb, D.G., Sundarb, L., Suna, L., Chenb, Z. and Lina, C.J., \"Nitrogen-Doped TiO2 Nanotube Array films with Enhanced Photocatalytic Activity under Various Light Sources\", Journal of Hazardous Materials, Vol. 184, pp. 855-863, 2010.
11. Liu, Y., Liu, J., Lin, Y., Zhang, Y. and Wei, Y., \"Simple Fabrication and Photocatalytic Activity of
S-Doped TiO2 under Low Power LED Visible Light Irradiation\", Ceramics International, Vol. 35,
pp. 3061-3065, 2009.
12. Gao, P., Liu, J., Zhang, T., Sun, D.D. and Ng, W., \"Hierarchical TiO2/CdS Spindle-Like Composite with High Photodegradation and Antibacterial Capability under Visible Light Irradiation\", Journal of Hazardous Materials, Vol. 229-230, pp. 209-216, 2012.
13. Mohamed, M.M., \"Effect of Ceria-Doped Titania on the Structure and Acidic Properties of MoO3/TiO2 Catalysts\", Applied Catalysis A: General, Vol. 267, pp. 135-142, 2004.
14. Liu, H., Shon, H.K, Sun, X., Vigneswaran, S. and Nan, H., \"Preparation and Characterization of Visible Light Responsive Fe2O3-TiO2 Composites\", Applied Surface Science, Vol. 257, pp. 5813-5819, 2011.
15. Ku, Y., Lin, C.N. and Hou, W.M., \"Characterization of Coupled NiO/TiO2 Photocatalyst for the Photocatalytic Reduction of Cr(VI) in Aqueous Solution\", Journal of Molecular Catalysis A: Chemical, Vol. 349,
pp. 20-27, 2011.
16. Shifu, C., Sujuan, Z., Wei, L. and Wei, Z., \"Preparation and Activity Evaluation of P-N Junction Photocatalyst NiO/TiO2\", Journal of Hazardous Materials, Vol. 155, pp. 320-326, 2008.
17. Bayati, M.R., Gupta, P., Molaei, R., Narayan, R.J. and Narayan, J., \"Phase Tuning, Thin Film Epitaxy, Interfacial Modeling, and Properties of YSZ-Buffered TiO2 on Si(001) Substrate\" ,Crystal Growth & Design, Vol. 12, pp. 4535-4544, 2013.
18. Hu, H., Xiao, W.J., Yuan, J., Shi, J.W., Chen, M.X. and Shang Guan, W.F., \"Preparations of TiO2 Film Coated on Foam Nickel Substrate by Sol-Gel Processes and its Photocatalytic Activity for Degradation of Acetaldehyde\", Journal of Environmental Sciences, Vol. 19, pp. 80-85, 2007.
19. Lee, H., Park, S.H., Kim, S.J., Kim, B.H., Yoon, H.S., Kim, J.S. and Jung, S.C., \"The Effect of Combined Processes for Advanced Oxidation of Organic Dye Using CVD TiO2 Film Photo-Catalysts\", Progress in Organic Coatings, Vol. 74, pp. 758-763, 2012.
20. Tavares, C.J., Marques, S.M., Rebouta, L., Lanceros-Mandez, S., Sencadas, V., Costa, C.M., Alves, E. and Fernandes, A.J., \"PVD-Grown Photocatalytic TiO2 Thin Films on PVDF Substrates for Sensors and Actuators Applications\", Thin Solid Films, Vol. 517, pp. 1161-1166, 2008.
21. Grandcolasa, M. and Yeb, A.J., \"N-doped Titania-Based Nanofiber Thin Films Synthesized via a Hydrothermal Route and Their Photo-Induced Properties under Visible Light\", Journal of Ceramic Processing Research, Vol. 13, pp. 65-70, 2012.
22. Begum, N., Farveez Ahmed, H.M. and Gunashekar, K.R., \"Effects of Ni Doping on Photocatalytic Activity of TiO2 Thin Films Prepared by Liquid Phase Deposition Technique\", Bulletin of Materials Science, Vol. 31, pp. 747-751, 2008.
23. Xue, L., Kajiyoshi, K. and Yan, Y., \"Preparation of Highly Oriented Titania Nanosheet Thin Films by Electrophoretic Deposition\", Thin Solid Films,
Vol. 518, pp. 10-15, 2009.
24. Schneider, O., Grobe-Brauckmann, J. and Argirusis, C., \"Impedance Study of the Electrophoretic Deposition of Yttrium Silicate from a Polymeric Precursor Sol\", Journal of the European Ceramic Society, Vol. 30, pp. 1089-1096, 2010.
25. Ciou, S.J., Fung, K.Z. and Chiang, K.W., \"The Mathematical Expression for Kinetics of Electrophoretic Deposition and the Effects of Applied Voltage\", Journal of Power Sources,
Vol. 172, pp. 358-362, 2007.
26. Yerokhin, A.L., Nie, X., Leyland, A., Matthews, A. and Dowey, S.J., \"Plasma Electrolysis for Surface Engineering (Review)\", Surface and Coating Technology, Vol. 122, pp.73–93, 1999.
27. Samanipour, F., Bayati, M.R., Golestani-Fard, F., Zargar, H.R., Mirhabibi, A.R., Shoaei-Rad, V. and Abbasi, S. \"Innovative Fabrication of ZrO2-Hap-TiO2 Nano/Micro-Structured Composites through MAO/EPD Combined Method\", Materials Letters, Vol. 65, pp. 926-928, 2011.
28. Bayati, M.R., Golestani-Fard, F. and Moshfegh, A.Z., \"The Effect of Growth Parameters on Photo-Catalytic Performance of the MAO-Synthesized TiO2 Nano-Porous Layers\", Materials Chemistry and Physics, Vol. 120, pp. 582-589, 2010.
29. Wan, L., Li, J.F., Feng, J.Y., Sun, W. and Mao, Z.Q., \"Photocatalysts of Cr Doped TiO2 Film Prepared by Micro Arc Oxidation\", Chinese Journal of Chemical Physics, Vol. 21, pp. 487-492, 2008.
30. De. D. and Nicholson, P.S., \"Role of Ionic Depletion in Deposition during Electrophoretic Deposition\", Journal of the American Ceramic Society, Vol. 82, pp. 3031-3036, 1999.
31. Bayati, M.R., Golestani-Fard, F. and Moshfegh, A.Z., \"How Photocatalytic Activity of the MAO-Grown TiO2 Nano/Micro-Porous Films is Influenced by Growth Parameters?\", Applied Surface Science,
Vol. 256, pp. 4253-4259, 2010.

ارتقاء امنیت وب با وف ایرانی