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Visible light photocatalytic activity of MWCNT/TiO2 using the degradation of methylene blue | ||
| Journal of Interfaces, Thin Films, and Low dimensional systems | ||
| دوره 2، شماره 2، مرداد 2019، صفحه 149-156 اصل مقاله (632.98 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22051/jitl.2019.26423.1033 | ||
| نویسندگان | ||
| Samira Mohammad darvish1؛ Abdollah Mortezaali* 1؛ Saeideh RamezaniSani2 | ||
| 1Department of Physics, Alzahra University, Tehran, 199389, I.R. Iran | ||
| 2Department of Physics, Roudehen Branch, Islamic Azad University, Roudehen, I.R. Iran | ||
| چکیده | ||
| Multi-walled carbon nanotubes (MWCNT)-doped TiO2 thin films were synthesized by the dip-coating method. The obtained products were characterized by SEM, EDX, XRD, and UV-vis absorption spectroscopy. The XRD patterns showed the presence of anatase phase. Absorption spectrum of MWCNT-doped TiO2 revealed a red shift in the optical absorption edge due to carbon doping. The photocatalytic properties were investigated using methylene blue (MB) degradation under visible light (400-700 nm). MWCNT/TiO2 thin films exhibited significantly higher photocatalytic activity as compared to undoped TiO2 thin films due to reduction of the rate of electron-hole recombination by doping carbon. Photocatalytic activity studies with different light source (white light and blue light) indicated a significant enhancement in photocatalytic removal under white light irradiation. | ||
| کلیدواژه‌ها | ||
| carbon nanotubes/ TiO2؛ photocatalytic؛ visible light | ||
| عنوان مقاله [English] | ||
| فعالیت فتو کاتالیستی نور مریی MWCNT/TiO2 با استفاده از تخریب متیلن بلو | ||
| نویسندگان [English] | ||
| سمیرا محمد درویش1؛ عبدالله مرتضی علی1؛ سعیده رمضانی ثانی2 | ||
| 1گروه فیزیک، دانشکده فیزیک و شیمی، دانشگاه الزهرا، تهران، ایران | ||
| 2گروه فیزیک، دانشگاه آزاد اسلامی، واحد رودهن، رودهن، ایران | ||
| چکیده [English] | ||
| در این پژوهش، لایههای نازک دی اکسید تیتانیوم (TiO2) آلاییده شده با نانو لولههای کربنی چند دیواره (MWCNT)، با استفاده از روش غوطه وری تهیه شدند. نمونه های به دست آمده توسط SEM و EDX و XRD و طیفسنجی جذب UV-Vis مشخصه یابی شدند. تحلیلهای XRD حضور فاز آناتاز را نشان دادند. در طیف جذب MWCNT/TiO2 به دلیل آلایش با کربن انتقال لبه جذب به سمت ناحیه قرمز مشاهده شد. به منظور بررسی خواص فوتوکاتالیستی لایه ها، تخریب محلول متیلن بلو (MB) در نور مرئی (700-400 نانومتر) توسط کاتالیست MWCNT/TiO2 انجام شد. لایههای نازک MWCNT/TiO2 فعالیت فوتوکاتالیستی بالاتری نسبت به لایه های نازک TiO2 خالص نشان دادند که ناشی از کاهش سرعت بازترکیب الکترون–حفره است. تخریب محلول متیلن بلو با منابع نوری مختلف (نور سفید و نورآبی) نشان داد که نمونه ها تحت تابش نورسفید فعالیت فوتوکاتالیستی بیشتری دارند. | ||
| کلیدواژه‌ها [English] | ||
| نانو لوله های کربنی/دی اکسید تیتانیوم, فوتوکاتالیستی, نور مرئی | ||
| مراجع | ||
|
[1] R. Vinu and G. Madras, "Environmental remediation by photocatalysis ", Journal of the Indian Institute of Science, 90 (2010) 189.
[2] M. T. Nguyen, C. K. Nguyen, T. M. Phuong Vu, "A study on carbon nanotube titanium dioxide hybrids: experiment and calculation ", Advances in Natural Sciences: Nanoscience and Nanotechnology, 5 (2014) 1.
[3] B. Mull, L. Möhlmann and O. Wilke, "Photocatalytic degradation of toluene, butyl acetateand limonene under UV and visible light with titanium dioxide-graphene oxide as photocatalyst", Environments, 4 (2017) 1.
[4] Y. Huang, W. Ho, Sh. Lee, L. Zhang, G. Li, and J. C. Yu, "Effect of carbon doping on the mesoporous structure of nanocrystalline titanium dioxide and its solar-light-driven photocatalytic degradation of NOx", Langmuir, 24 (2008) 3510.
[5] M. M. Ballari, Q.L. Yu, H. J. H. Brouwers, "Experimental study of the NO and NO2 degradation by photocatalytically active concrete", Catalysis Today, 161 (2011) 175.
[6] Q. Duan, J. Lee, Y. Liu, and H. Qi, "Preparation and photocatalytic performance of MWCNTs/TiO2 nanocomposites for degradation of aqueous substrate", Journal of Chemistry, 2016 (2016) 1.
[7] N. Daneshvar, D. Salari, A. R. Khataee, "Photocatalytic degradation of azo dye acid red 14 in water on ZnO as an alternative catalyst to TiO2", Journal of Photochemistry and Photobiology A: Chemistry, 62 (2004) 317.
[8] S. O. Hay, T. Obee, Z. Luo, T. Jiang, Y. Meng, J. He, S. C. Murphy and S. Suib, "The viability of photocatalysis for air purification", Molecules, 20 (2015) 1319.
[9] P. Pichat, J. Disdier, C. Hoang-Van, D. Mas, G. Goutallier, C. Gaysee, "Purification/deodorization of indoor air and gaseous effluents by TiO2 photocatalysis", Catalyst Today, 63 (2000) 363.
[10] J. Peral, D. F. Ollis, "Heterogeneous photocatalysis oxidation of gas-phase organics for air purification: Acetone, 1-butanol, butyraldehyde, formaldehyde, and m-xylene oxidation", Journal of Catalysis, 136 (1992) 554.
[11] K. Woan, G. Pyrgiotakis and W. Sigmund, "Photocatalytic Carbon-Nanotube-TiO2 Composites", Advanced Materials, 21 (2009) 2233.
[12] A. M. Kamil, F. H. Hussein, A. F. Halbus, and D. W. Bahnemann, "Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2 Composite", International Journal of Photoenergy, 2014 (2014) 1.
[13] X. Li, X. Zou, Z. Qu, Q. Zhao, L. Wang, "Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method", Chemosphere, 83 (2011) 674.
[14] X. Zhang, L. Z. Zhang, T. F. Xie, D. J. Wang, "Low-temperature synthesis and high visible-light-induced photocatalytic activity of BiOI/TiO2 heterostructures", Journal of Physical Chemistry C, 113 (2009) 7371.
[15] B. Réti, K. Mogyorósi, A. Dombi, K. Hernádi, "Substrate dependent photocatalytic performance of TiO2/MWCNT photocatalysts", Applied Catalysis A: General, 469 (2014) 153.
[16] S. M. Lam, J. Ch. Sin, A. Z. Abdullah, A. R. Mohamed, "Photocatalytic TiO2/Carbon Nanotube Nanocomposites for Environmental Applications: An Overview and Recent Developments", Fullerenes, Nanotubes, and Carbon Nanostructures, 22 (2014) 471.
[17] Zh. Zengxiu, Zo. Kehua, W. Feng, W. Qiong, "Experimental study on nitrogen-doped nano-scale TiO2 assisted process at low temperature", Modern Applied Science, 4 (2010) 95.
[18] W. Yan, Z. Jiwei, J. Zhenshen, and Z. Shunli, "Visible light photocatalytic decoloration of methylene blue on novel Ndoped TiO2", Chinese Science Bulliten 52 (2007) 2157.
[19] M. MeiGui, S. P. Chai, B. Q. Xu, A. R. Mohamed, "Enhanced visible light responsive MWCNT/TiO2 core–shell nanocomposites as the potential photocatalyst for reduction of CO2 into methane”, Solar Energy Materials & Solar Cells, 122 (2014) 183.
[20] Y. H. Tseng and B. K. Huang, "Photocatalytic Degradation of NOx Using Ni-Containing TiO2", International Journal of Photoenergy, 2012 (2012) 1.
[21] C. D. Valentin, E. FINAZZI, G. Pacchioni, A. Selloni, S. Livraghi, M. C. Paganini, and E.Giamello, "N-doped TiO2: Theory and experiment", Chemical Physics, 339 (2007) 44.
[22] R. Asahi, T. Morikawa, T. Ohwaki, K. Aoki, and A. Tage, "Visible-light photocatalysis in nitrogen-doped titanium oxide", Science, 293 (2001) 269.
[23] D. Wang, B. Yu, F. Zhou; C. Wang, and W. Liu, "Synthesis and characterization of anatase TiO2 nanotubes and their use in dye-sensitized solar cells", Materials Chemistry and Physics, 113 (2009) 602.
[24] S. U. M. Khan, M. Al-shahry, Jr. W. B. Ingler, "efficient photochemichal water splitting by a chemically modified n-TiO2 ", Science, 297 (2002) 2243.
[25] YH. Li, SG. Wang, JQ. Wei, XF. Zhang, CL. Xu, ZK. Luan, DH. Wu, BQ. Wei, "Competitive adsorption of Pb2+,Cu2+ and Cd2+ ions from aqueous solutions by multi walled carbon nanotubes", Carbon, 41 (2003) 2787.
[26] B. Pan, BS. Xing, " Adsorption mechanisms of organic chemicals on carbon nanotubes", Environmental Science & Technology, 42 (2008) 9005.
[27] W. D. Zhang, B. Xu, and L. Ch. Jiang," Functional hybrid materials based on carbon nanotubes and metal oxides", Journal of Materials Chemistry, 20 (2010) 6383.
[28] Y-J. Xu, Y. Zhuang, and X. Fu, "New Insight for Enhanced Photocatalytic Activity of TiO2 by Doping Carbon Nanotubes: A Case Study on Degradation of Benzene and Methyl Orange", Journal of Physical Chemistry C, 114 (2010) 2669.
[29] S. Sakthivel, H. Kisch, "Daylight photocatalysis by carbon-modified titanium dioxide", Angewandte Chemie International Edittion , 42 (2003) 4908.
[30] C. Xu, R. Killmeyer, M. L. Groy, S. U. M. Khan, "Photocatalytic effect of carbon- modified n-TiO2 nanopertides under visible light illumination ", Applied Catalysis B Environmental, 64 (2006) 312.
[31] C. M. liang, Z. F. jun, W-chun Oh, "Synthesis, characterization, and photocatalytic analysis of CNT/TiO2 composites derived from MWCNTs and titaniumsources",New Carbon Materials, 24 (2009) 159.
[32]M. L. Chen, F. J. Zhang, and W-Chun Oh, "Photocatalytic Degradation of Methylene Blue by CNT/TiO2 Composites Prepared from MWCNT and Titanium n-butoxide with Benzene", Journal of the Korean Ceramic Society, 45 (2008) 651.
[33] S. P. Kim and H. C. Choi, "Preparation of Carbon-Nanotube-supported TiO2 for Enhanced Dye-degrading Photocatalytic Activity", Bulliten of the Korean Chemical Society, 36 (2015) 258.
[34] K. Dai, T. Peng, D. Ke and B. Wei, "Photocatalytic hydrogen generation using a nanocomposite of multi–walled carbon nanotubes and TiO2 nanoparticles under visible light irradiation", Nanotechnology, 20 (2009) 125603.
[35] O. Akhavan, R. Azimirad, S. Safad, and M. M. Larijani, "Visible light photo-induced antibacterial activity of CNT–doped TiO2 thin films with various CNT contents", Journal of Materials Chemistry, 20 (2010) 7386.
[36] T. Rojviroon, A. Laobuthee, and S. Sirivithayapakorn, "Photocatalytic Activity of Toluene under UV-LED Light with TiO2 Thin Films", International Journal of Photoenergy, 2012 (2012) 1.
[37] Wendong Wang, Philippe Serp, Philippe Kalck, Joaquim Luís Faria, "Visible light photodegradation of phenol on MWNT-TiO2 composite catalysts prepared by a modified sol–gel method", Journal of Molecular Catalysis A: Chemical, 235 (2005) 194.
[38] F. Bensouici, M. Bououdina, A. Iratni, M. Toubane, and R. Tala-Ighil, "Effect of Thickness on Photocatalytic Activity of TiO2 Thin Films", Progress in Clean Energy, 1 (2015)763.
[39] Y. Hua Chen and K. Jui Tu, "Thickness Dependent on Photocatalytic Activity of Hematite Thin Films", International Journal of Photoenergy, 2012 (2012) 1.
[40] A. Guillén-Santiago, S.A. Mayén, G. Torres-Delgado, R. Castanedo-Pérez, A. Maldonado, M. de la L. Olvera," Photocatalytic degradation of methylene blue using undoped and Ag-doped TiO2 thin films deposited by a sol–gel process: Effect of the ageing time of the starting solution and the film thickness", Materials Science and Engineering B, 174 (2010) 84.
[41] H. Arslan, Y. Barış Doluğan, A. Nur Ay, “Measurement of the Penetration Depth in Biological Tissue for Different Optical Powers", Sakarya University Journal of Science, 22 (2018) 1095.
[42] I. S. Sidorov, S. V. Miridonov, E. Nippolainen, and A. A. Kamshilin, "Estimation of light penetration depth in turbid media using laser speckles", Optics Express, 20 (2012) 13692.
[43] M. R. Islam and J. Podder, "Optical properties of ZnO nano fiber thin films grown by spray pyrolysis of zinc acetate precursor", Crystal Research and Technology, 44 (2009) 286. | ||
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