Developing Cu-Mesoporous TiO2 Cooperated with Ozone Assistance and Online- Regeneration System for Acid Odor Removal in All Weather

Authors: Yuchih Lin, Chung-Liang Chang, Hong-Yi Cao, Sheng-Hsuan Hsiao

Abstract:

Cu-mesoporous TiO2 is developed for removal acid odor cooperated with ozone assistance and online- regeneration system with/without UV irradiation (all weather) in study. The results showed that Cu-mesoporous TiO2 present the desirable adsorption efficiency of acid odor without UV irradiation, due to the larger surface area, pore sizeand the additional absorption ability provided by Cu. In the photocatalysis process, the material structure also benefits Cu-mesoporous TiO2 to perform the more outstanding efficiency on degrading acid odor. Cu also postponed the recombination of electron-hole pairs excited from TiO2 to enhance photodegradation ability. Cu-mesoporous TiO2 could gain the conspicuous increase on photocatalysis ability from ozone assistance, but without any benefit on adsorption. In addition, the online regeneration procedure could process the used Cu-mesoporous TiO2 to reinstate the adsorption ability and maintain the photodegradtion performance, depended on scrubbing, desorping acid odor and reducing Cu to metal state.

Keywords: mesoporous material, photocatalyst, adsorption, regeneration usage, photocatalytic ozonation

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077691

References:

[1] Environmental Protection Administration Taiwan, The standard of air pollutant emission from the stationary source" in Chinese, http://w3.epa.gov.tw/epalaw/docfile/040070.pdf´╝îaccessed on Jan 21, 2012.
[2] L. M. Le Leuch, A. Subrenat, and P. Le Cloirec, "Hydrogen sulfide adsorption and oxidation onto activated carbon cloths: applications to odorous gaseous emission treatments," Langmuir, vol.19, no.26, pp.10869-10877, Nov. 2003.
[3] L. M. Le Leuch, A. Subrenat, and P. Le Cloirec, "Hydrogen sulfide and ammonia removal on activated carbon fiber cloth-supported metal oxides," Environ. Technol., vol. 26, no. 11, pp.1243-1254, Nov. 2005.
[4] Couvert, I. Charron, A. Laplanchea, C. Rennerb, L. Patriab, and B. Requiemec, "Treatment of odorous sulphur compounds by chemical scrubbing with hydrogen peroxide - Application to a laboratory plant," Chem. Eng. Sci., vol.61, no.22, pp. 7240-7248, Nov. 2006.
[5] G. Ok, Y. Hanai, and T. Katou, , "Decomposition of chlorinated dioxins, odourous compounds and NOx from MSW incineraton plant by oxidizing catalyst," Chemosphere, vol. 26, no.12, pp.2167-2172, Dec. 1993.
[6] D. Pope, D.S. Walker, and R.L. Moss, "Preparation of cobalt oxide catalysts and their activity for CO oxidation at low concentration," J. Catal., vol. 47, no.1, pp.33-47, Apr. 1977.
[7] J.A. Rossin, "Complete catalytic oxidation of diethyl sulfide over a 1% platinum/alumina catalyst," Ind. Eng. Chem. Res., vol. 28, no. 10, pp. 1562-1564, Oct. 1989.
[8] M. Okubo, H. Kametaka, K. Yoshida, and T. Yamamoto, "Odor removal characteristics of barrier-type packed-bed nonthermal plasma reactor," Jpn. J. Appl. Phys. 1, vol. 46, no.8A, pp.5288-5293, Oct. 2007.
[9] N. Lesauze, A. Laplanche, G. Martin, and H. Paillard, "A Process Of Washing And Ozonation To Deodorize An Atmosphere Contaminated By Sulfides," Ozone-Sci. Eng., vol.13, no. 3, pp. 331-347, Mar. 1991.
[10] G.M. Zuo, Z.X. Cheng, H. Chen, G.W. Li, and T. Miao, "Study on photocatalytic degradation of several volatile organic compounds," J. Hazard. Mater., vol. 128, no.2-3, pp.158-163, Feb. 2006.
[11] H.H. Kim, A. Ogata, and S. Futamura, "Effect of different catalysts on the decomposition of VOCs using flow-type plasma-driven catalysis," IEEE T. Plasma Sci., vol. 34, no.3, pp.984-995, Jun. 2006.
[12] H. Yu, K. Zhang, and C. Rossi, "Theoretical study on photocatalytic oxidation of VOCs using nano-TiO2 photocatalyst," J. Photoch. Photobio. A., vol.188, no.1, pp. 65-73, Apr. 2007.
[13] H.X. Li, Z.F. Bian, J. Zhu, Y.N. Huo, H. Li, and Y.F. Lu, "Mesoporous Au/TiO2 nanocomposites with enhanced photocatalytic activity," J. Am. Chem. Soc., vol. 129, no.15, pp. 4538-4539, Mar. 2007.
[14] J.C. Yu, X.C. Wang, and X.Z. Fu, "Pore-Wall Chemistry and Photocatalytic Activity of Mesoporous Titania Molecular Sieve Films," Chem. Mater., vol. 16, no.8, pp. 1523-1530, Mar. 2004.
[15] D.M. Antonelli and J.Y. Ying, "Synthesis of hexagonally packed mesoporous TiO2 by a modified sol-gel method," Angew. Chem. Int. Ed. Engl., vol. 34, no. 18, pp. 2014-2017, Oct. 1995.
[16] J.H. Huang, X.C. Wang, Y.D. Hou, X.F. Chen, L. Wu, X.X. Wang, and X.Z. Fu, "Synthesis of functionalized mesoporous TiO2 molecular sieves and their application in photocatalysis," Micropor. Mesopor. Mat., vol.110, no.2-3, pp. 543-552, Apr. 2008.
[17] S. Shamaila, A. K. L. Sajjad, F. Chen and, J. Zhang, "Mesoporous titania with high crystallinity during synthesis by dual template system as an efficient photocatalyst," Catal. Today, vol.175, no.1, pp. 568-575, Oct. 2011.
[18] I.H. Tseng, J. C.S. Wu, and H.Y Chou, "Effects of sol-gel procedures on the photocatalysis of Cu/TiO2 in CO2 photoreduction," J. Catal., vol.221, no.2, pp.432-440, Jan. 2004
[19] Le. Yu, S. Yuan, L. Shi, Y. Zhao, and J. Fang, "Synthesis of Cu2+ doped mesoporous titania and investigation of its photocatalytic ability under visible light," Micropor. Mesopor. Mat., vol.134, no.1-3, pp.108-114, Jun. 2010.
[20] T.K. Ghorai, D. Dhak, S.K. Biswas, S. Dalai, and P. Pramanik, "Photocatalytic oxidation of organic dyes by nano-sized metal molybdate incorporated titanium dioxide (MxMoxTi1−xO6) (M = Ni, Cu, Zn) photocatalysts," J. Mol. Catal. A-Chem., vol. 273, no. 1-2, pp. 224-229, Aug. 2007.
[21] G. Colón, M. Maicu, M.C. Hidalgo, and J.A. Navío, "Cu-doped TiO2 systems with improved photocatalytic activity,"Appl. Catal. B: Environ., vol. 67, no.1-2, pp. 41-51, Sep. 2006.
[22] J. Arana, A.P. Alonso, J.M.D. Rodríguez, J.A.H. Melián, O.G. Díaz, J.P. Pena," Comparative study of MTBE photocatalytic degradation with TiO2 and Cu-TiO2," Appl. Catal. B: Environ., vol. 78, no.3-4, pp. 355-363, Feb. 2008.
[23] Z.H. Li, H. Dong, Y.F. Zhang, T.T. Dong, X.X. Wang, J.Q. Li, X.Z. Fu, "Effect of m2+ (m = Zn and Cu) dopants on the electronic structure and photocatalytic activity of In(OH)ySz solid solution," J. Phys. Chem. C, vol. 112, no.41, pp.16046-16051, Sep. 2008.
[24] R.A. Spurr, and H. Myers, "Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer," Anal. Chem., vol.29, no.5, pp.760-762, May 1957.
[25] Y. Lin, C.L. Chang, and C.W. Mei, "Utilizing Photoreduction Process to Anchor Metal on TiO2 for Acid-Odors Removal ," Adv. Mater. Res., vol. 343-344, pp.188-192, Sep. 2011.
[26] T. Ohno, K. Tokieda, S. Higashida, and M. Matsumura, "Synergism between rutile and anatase TiO2 particles in photocatalytic oxidation of naphthalene," Appl. Catal. A-Gen., vol. 244, no. 2, pp. 383-391, May 2003.