Enhanced Photocatalytic Degradation of Benzene in Aqueous Medium over Ag-Modified TiO2 Nanocatalysts
Abstract
Photocatalytic efficiency of titanium dioxide nanoparticles was improved by surface modification with silver nanoparticles. Titanium dioxide nanoparticles with the particle size 17±1 nm can be prepared by sol-gel method. Silver/titanium dioxide nanoparticles were prepared by chemical reduction method and particle deposition with various mole percent of silver. The synthesized samples were characterized by electron microscopy techniques combined with energy dispersive X-ray analysis. The optical properties were also studied by photoluminesence spectroscopy and UV-diffuse reflectance spectroscopy. The developed silver/titanium dioxide nanoparticles showed high photocatalytic efficiency with more than 80% of benzene contaminant in water was removed, which 2.5 times better than pristine titanium dioxide. Keywords : titanium dioxide nanoparticle, photocatalytic reaction, degradation, benzeneReferences
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Zhu, L., Abumaizar, R. J., & Kocher, W. M. (1998). Biofiltration of benzene contaminated air streams using compost-activated carbon filter media. Environmental progress, 17(3), 168–172.
Ameta, R., Benjamin, S., Ameta, A., & Ameta, S. C. (2013). Photocatalytic degradation of organic pollutants: A review. Materials Science Forum, 737, 247-272.
Austin, H., Delzell, E., & Cole, P. (1988). Benzene and Leukemia. American Journal of Epidemiology, 127(3),
419-439.
Grabowska, E., Marchelek, M., Klimczuk, T., Trykowski, G., & Zaleska-Medynska, A. (2016). Noble metal modified TiO2 microspheres: Surface properties and photocatalytic activity under UV–Vis and visible light. Journal of Molecular Catalysis A: Chemical, 423, 191–206.
Gupta, S. M., & Tripathi, M. (2011). A review of TiO2 nanoparticles. Chinese Science Bulletin, 56(16), 1639–1657.
He, F., Ma, F., Li, T., & Li, G. (2013). Solvothermal synthesis of N-doped TiO2 nanoparticles using different
nitrogen sources, and their photocatalytic activity for degradation of benzene. Chinese Journal of
Catalysis, 34(12), 2263–2270.
Kim, B.–M., Yadav, H. M., & Kim, J.–S. (2016). Photocatalytic degradation of gaseous benzene on photodeposited Ag–TiO2 nanoparticles. Journal of Nanoscience and Nanotechnology, 16(10), 10991-10997.
Kotlhao, K., Mtunzi, F. M., Pakade, V., Ejidike, I. P., & Klink, M. J. (2018). Synthesis, Characterization and evaluation of Ag-TiO2 nanocomposites for photo-catalytic degradation of selected chlorophenols. Digest Journal of Nanomaterials and Biostructures, 13(3), 835-846.
Lei, X. F., Xue, X. X., & Yang, H. (2014). Preparation and characterization of Ag-doped TiO2 nanomaterials and their photocatalytic reduction of Cr(VI) under visible light. Applied Surface Science, 321, 396–403.
Leong, K. H., Gan, B. L., Ibrahim, S., & Saravanan, P. (2014). Synthesis of surface plasmon resonance (SPR) triggered Ag/TiO2 photocatalyst for degradation of endocrine disturbing compounds. Applied Surface Science, 319, 128–135.
Liao, D. L., & Liao, B.Q. (2007). Shape, size and photocatalytic activity control of TiO2 nanoparticles with surfactants. Journal of Photochemistry and Photobiology A Chemistry, 187(2), 363-369.
Nainani, R., Thakur, P., & Chaskar, M. (2012). Synthesis of silver doped TiO2 nanoparticles for the improved photocatalytic degradation of methyl Orange. Journal of Materials Science and Engineering, 2(1), 52-58.
Pan, X., Yang, M.-Q., Fu, X., Zhang, N., & Xu, Y.-J. (2013). Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications. Nanoscale, 5(9), 3601–3614.
Peerakiatkhajohn, P., Onreabroy, W., Chawengkijwanich, C., & Chiarakorn, S. (2011). Preparation of visible-light responsive TiO2 doped Ag thin film on PET plastic for BTEX treatment. Journal of Sustainable Energy & Environment, 2, 121-125.
Pelaez, M., Nolan, N. T., Pillai, S. C., Seery, M. K., Falaras, P., Kontos, A. G., Dionysiou, D. D. (2012). A review on the visible light active titanium dioxide photocatalysts for environmental applications. Applied Catalysis B: Environmental, 125, 331–349.
Singh, P., Borthakur, A., Srivastava, N., Singh, R., Tiwary, D., & Mishra, P. K. (2016). Photocatalytic Degradation of Benzene and Toluene in Aqueous Medium. Pollution, 2(2), 199-210.
Tunc, I., Bruns, M., Gliemann, H., Grunze, M., & Koelsch, P. (2010). Bandgap determination and charge separation in Ag@TiO2 core shell nanoparticle films. Surface and Interface Analysis, 42, 835–841.
Worrall, M., (2017) Beating BTEX methods of refinery wastewater BTEX control and improvements made. Retrieved July 16, 2019, from http://www.amcec.com/case-studies/
Xiong, L.–B., Li, J.–L., Yang,B., & Yu, Y. (2012). Review article Ti3+ in the surface of titanium dioxide: Generation, properties and photocatalytic application. Journal of Nanomaterial, 2012, 1-13.
Xu, N., Shi, Z., Fan, Y., Dong, J., Shi, J., & Hu, M. Z.–C. (1999). Effects of particle size of TiO2 on photocatalytic
degradation of methylene blue in aqueous suspensions. Industrial & Engineering Chemistry Research, 38(2), 373–379.
Yu, Y., Wen, W., Qian, X. -Y., Liu, J. –B., & Wu, J. M. (2017). UV and visible light photocatalytic activity of Au/TiO2 nanoforests with Anatase/Rutile phase junctions and controlled Au locations. Scientific Reports, 7(1), 1-13.
Zhang, Y., Fu, F., Li, Y., Zhang, D., & Chen, Y. (2018). One-Step Synthesis of Ag@TiO2 Nanoparticles for Enhanced Photocatalytic Performance. Nanomaterials, 8(12), 1032.
Zhou, R., Lin, S., Zong, H., Huang, T., Li, F., Pan, J., & Cui, J. (2017). Continuous Synthesis of Ag/TiO2 Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation. Journal of Nanomaterials, 2017, 1-9.
Zhu, L., Abumaizar, R. J., & Kocher, W. M. (1998). Biofiltration of benzene contaminated air streams using compost-activated carbon filter media. Environmental progress, 17(3), 168–172.
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2019-10-15
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บทความวิจัยจากการประชุมวิชาการระดับชาติ"วิทยาศาสตร์วิจัย"ครั้งที่ 11
