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| Effect of Hydrochloric Acid Modification of NaZSM--5 Zeolite on the Properties of TiO2/ZSM--5 Photocatalyst |
| LI Li1, WANG Kuanling1, LI Jiabo2, ZHANG Wenjie1 |
1.School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159
2.Shenyang Paraffin-wax Chemical Company Ltd., Shengyang 110141 |
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Cite this article:
LI Li WANG Kuanling LI Jiabo ZHANG Wenjie. Effect of Hydrochloric Acid Modification of NaZSM--5 Zeolite on the Properties of TiO2/ZSM--5 Photocatalyst. Chin J Mater Res, 2010, 24(5): 535-539.
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Abstract HZSM--5 zeolite was prepared by modification of NaZSM--5 zeolite with 0.3 mol/L hydrochloric acid. Photocatalysts of TiO2/NaZSM--5 and TiO2/HZSM--5 were prepared by dispersing TiO2 precursor onto the surface of NaZSM--5 and HZSM--5 zeolites using sol--gel method followed by calcination process, and the photocatalysts were characterized. The results show that the structure of the zeolite does not noticeably change after modification of NaZSM--5 by HCl, but its crystallinity reduces. Crystalline size of TiO2 decreases obviously after loading. The adsorption capacity of methyl orange and photocatalytic activity as well as surface area of the supported TiO2/ZSM--5 photocatalyst are significantly increased compared with that of bare TiO2. Further improvements of the properties were achieved after hydrochloric acid modification of the zeolite. Degradation rate of TiO2/HZSM--5 is 82.4% of the initial activity after the photocatalyst was reused for 4 times.
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Received: 24 January 2010
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| Fund: Supported by National Natural Science Foundation of China No.50774074, and National Key Basic Research and Development Program of China No.2005CB121104. |
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