材料研究学报  2010, Vol. 24 Issue (5): 535-539

研究论文 本期目录 | 过刊浏览 |

对NaZSM--5分子筛盐酸改性制备TiO2/ZSM--5光催化剂

李莉1,  王宽岭1,   李家博2,  张文杰1

1.沈阳理工大学环境与化学工程学院 沈阳 110159 2.沈阳石蜡化工有限公司 沈阳 110141

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

李莉 王宽岭 李家博 张文杰. 对NaZSM--5分子筛盐酸改性制备TiO₂/ZSM--5光催化剂[J]. 材料研究学报, 2010, 24(5): 535-539.
. Effect of Hydrochloric Acid Modification of NaZSM--5 Zeolite on the Properties of TiO2/ZSM--5 Photocatalyst[J]. Chin J Mater Res, 2010, 24(5): 535-539.

摘要 参考文献 相关文章 Metrics 全文: PDF(865 KB)   摘要: 用盐酸改性处理NaZSM--5得到HZSM--5分子筛载体, 再用溶胶--凝胶法在NaZSM--5和HZSM--5表面合成TiO2前驱体, 将其煅烧制备出TiO2/ZSM--5负载型光催化剂。分别用扫描电镜、X射线衍射、傅里叶变换红外光谱和BET氮吸附对光催化剂的表面形貌、晶相结构和比表面积进行表征, 研究了NaZSM--5分子筛盐酸改性对TiO2/ZSM--5光催化剂的影响。结果表明, 盐酸改性对NaZSM--5分子筛骨架结构的影响不大, 但是使其结晶度有所降低。负载后TiO2的晶粒尺寸明显减小, TiO2/ZSM--5光催化剂的比表面积比纯TiO2有较大增长。对NaZSM--5分子筛盐酸改性提高了TiO2/ZSM--5对甲基橙的吸附和光催化降解能力。重复使用四次后, TiO2/ZSM--5光催化剂的光催化降解率下降为初次使用时的82.4%。 关键词 ： 无机非金属材料 ,  ZSM--5 ,  溶胶--凝胶 ,  负载型光催化剂     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. Key words： inorganic non--metallic materials    ZSM--5    sol--gel    supported photocatalyst 收稿日期: 2010-01-24      ZTFLH:  O643   基金资助: 国家自然科学基金50774074和国家重点基础研究发展计划2005CB121104资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张文杰 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2010/V24/I5/535 1 A.Hagfeldt, M.Gratzel, Light-induced redox reactions in nanocrystalline systems, Chemical Review, 95, 49(1995) 2 A.Fujishima, T.N.Rao, D.A.Tryk, Titanium dioxide photocatalysis, Journal of Photochemisty and Photobiology C, 1, 1(2000) 3 W.J.Zhang, K.L.Wang, S.L.Zhu, Y.Li, F.H.Wang, H.B.He, Yttrium-doped TiO2 films prepared by means of DC reactive magnetron sputtering, Chemical Engineering Journal，155(1-2), 83(2009) 4 D.Y.Wang, H.C.Lin, C.C.Yen, Influence of metal plasma ion implantation on photo-sensitivity of anatase TiO2 thin films, Thin Solid Films, 515, 1047(2006) 5 W.J.Zhang, Y.Li, S.L.Zhu, F.H.Wang, Fe-doped photocatalytic TiO2 film prepared by pulsed dc reactive magnetron sputtering, Journal of Vacuum Science & Technology A, 21, 1877(2003) 6 J.O.Carneiro, V.Teixeira, A.Portinh, A.Magalh, P.Coutinho, C.J.Tavares, R.Newton, Iron-doped photocatalytic TiO2 sputtered coatings on plastics for self-cleaning applications, Material Science and Engineering B, 138, 144(2007) 7 H.Yahiro, T.Miyamoto, N.Watanabe, H.Yamaura, Photocatalytic partial oxidation of a-methylstyrene over TiO2 supported on zeolites, Catalysis Today, 120(2), 158(2007) 8 S.Easwaramoorthi, P.Natarajan, Photophysical properties of phenosafranine (PHNS) adsorbed on the TiO2-incorporated zeolite-Y, Microporous and Mesoporous Materials, 86(1-3), 185(2005) 9 S.J.Yoon , Y.H.Lee, W.J.Cho, I.O.Koh, M.J.Yoon, Synthesis of TiO2-entrapped EFAL-removed Y-zeolites novel photocatalyst for decomposition of 2-methylisoborneol, Catalysis Communications, 8(11), 1851(2007) 10 R.Portela, M.C.Canela, B.Sanchez, F.C.Marques, A.M.Stumbo, R.F.Tessinari, J.M.Coronado, S.Suarez, H2S photodegradation by TiO2/M-MCM-41 (M = Cr or Ce):Deactivation and by-product generation under UV-A and visible light, Applied Catalysis B: Environmental, 84(3-4), 643(2008) 11 FENG Lili, ZHAO Wei, LIU Yang, JIAO Liang, LI Xingguo, Photocatalytic degradation of rhodamine B by nanocrystalline TiO2 loaded into MCM-41 molecular sieves, Acta Physica-Chimica Sinica, 25(7), 1347(2009) (冯利利, 赵威, 刘洋, 焦亮, 李星国, MCM-41分子筛担载纳米TiO2复合材料光催化降解罗丹明B, 物理化学学报, 25(7), 1347(2009)) 12 G.Li, X.S.Zhao, M.B.Ray, Advanced oxidation of orange II using TiO2 supported on porous adsorbents: The role of pH, H2O2 and O3, Separation and Purification Technology, 55(1), 91(2007) 13 A.N.Okte, O.Yilmaz, Characteristics of lanthanum loaded TiO2-ZSM-5 photocatalysts: Decolorization and degradation processes of methyl orange, Applied Catalysis A: General, 354(1-2), 132(2009) 14 T.Masato, K.Takashi, H.Manabu, R.Diana, Photocatalytic oxidation of acetaldehyde with oxygen on TiO2/ZSM-5 photocatalysts: Effect of hydrophobicity of zeolites, Journal of Catalysis, 246(2), 235(2007) 15 LI Jinze, HUANG Jie, CHEN Hao, LI Yiyu, SU Xiaodong, The influence of La-doping on the properties of TiO2 thin films, structure，Chinese Journal of Materials Research, 23(5), 546(2009) (李金泽, 黄洁, 陈浩, 厉以宇, 苏晓东, La掺杂对TiO2薄膜性能的影响, 材料研究学报, 23(5), 546(2009)) 16 G.Marc, V.Augugliaro, L.Muoz, Preparation characterization and photocatalytic activity of polycrystalline ZnO/TiO2 systems surface and bulk characterization, The Journal of Physical Chemistry B, 105(5), 1026(2001) 17 F.F.Li, Y.S.Jiang, L.X.Yu, Z.W.Yang, T.Y.Hou, S.M.Sun, Surface effect of natural zeolite (clinoptilolite) on the photocatalytic activity of TiO2, Applied Surface Science, 252(5), 1410(2005) 18 C.M.Zhu, L.Y.Wang, L.R.Kong, Photocatalytic degradation of azo dyes by supported TiO2+UV in aqueous solution, Chemosphere, 41(3), 303(2000) 19 M.L.Huang, C.F.Xu, Z.B.Wu, Y.F.Huang, J.M.Lin, J.H.Wu, Photocatalytic discolorization of methyl orange solution by Pt modified TiO2 loaded on natural zeolite, Dyes and Pigments 77(2), 327(2008) [1] 宋莉芳, 闫佳豪, 张佃康, 薛程, 夏慧芸, 牛艳辉. 碱金属掺杂MIL125的CO2 吸附性能[J]. 材料研究学报, 2023, 37(9): 649-654. 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