膜科学与技术

原位CVD法生长碳纳米管组装CNT/TiO2多孔复合膜

作者：

吕慧，陈爱平，张哲，何洪波，李春忠

单位：华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室

关键词：碳纳米管；二氧化钛；多孔复合膜；光催化；CVD

出版年,卷(期):页码： 2014,34(3):15-22

摘要：

本文在FTO导电玻璃上组装CNTs/Fe-Ni/TiO2多孔复合膜光催化剂。首先制备含成孔剂嵌段聚合物P123和掺杂铁和镍的TiO2前驱体溶胶，然后采用喷涂热解法在FTO导电玻璃上组装掺杂铁和镍的TiO2多孔膜，最后采用CVD法将CNTs原位生长在多孔TiO2膜上，得到过渡金属掺杂的CNTs/TiO2多孔复合膜。通过XRD、SEM、TEM、Raman和光电流等方法考察了原位生长CNTs的工艺条件对CNTs/TiO2复合膜光催化剂的结构和性能的影响，并通过降解甲基橙溶液评价了CNTs生长工艺条件对光催化活性的影响。考察了多孔复合膜在液相光催化降解中的稳定性。结果表明，原位生长CNTs的较适宜的工艺条件为：温度550-600℃，时间20min。

In this work, porous CNTs/Fe-Ni/TiO2 photo-catalyst composite film was assembled on FTO conducting glass substrate. Firstly, nickel and iron doped titanium dioxide sol precursor containing block polymer P123 was prepared by sol-gel method. Then, Fe-Ni/TiO2 porous film on FTO conductive glass substrate was prepared using the spray pyrolysis deposition technique. Finally, CNTs were in situ grown on Fe-Ni/TiO2 porous film by chemical vapor deposition (CVD) method, to prepare a nickel and iron doped CNTs/TiO2 porous composite film. The CNTs/Fe-Ni/TiO2 porous composite film photocatalyst was characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy), Raman spectra and photo-current responses. The photocatalytic activity and stability were investigated by photodegradation of methyl orange. The results show that the optimized photocatalytic performance activity was achieved when the time of CVD was 20 min and the temperature is 550-600 ℃.

吕慧(1987-)，女，山东省人，硕士在读，从事半导体的光催化研究。(lv_hui_1987@yeah.net)

参考文献：

1] Takeuchi M.，Yamashita H.，Matsuoka M.，Anpo M.. Photocatalytic decomposition of NO under visible light irradiation on the Cr-ion-implanted TiO2 thin film photocatalyst[J]. Catal. Lett，2000，67(27): 135-137. [2] Choi W.，Termin A.，Hoffmann M. R.. The role of metal ion dopant in quantum-sized TiO2: correlation between photoreactivity and charge carrier recombination dynamics [J]. J. Phys. Chem，1994，98 (35): 13669-13672. [3] Li F B，Li X Z，Hou M F. Photocatalytic degradation of 2-mercaptobenzothiazole in aqueous La3+-TiO2 suspension for odor control [J]. Appl. Catal. B，2004，48 (31): 185-194. [4] Cao Y，Yang W，Zhang W，Liu G，Yue P. Improved photocatalytic activity of Sn4+ doped TiO2 nanoparticulate films prepared by plasma-enhanced chemical vapor deposition [J]. New J. Chem，2004，28 (3): 218-222. [5] Bachtold A，Strunk C，Salvetat JP etal. Aharonov-Bohm oscillations in carbon nanotubes [J]. Nature，1999，397 (6721): 673-675. [6] Huang J，Chen S，Wang Z etal. Superplastic carbon nanotubes conditions have been discovered that allow extensive deformation of rigid single-walled nanotubes [J]. Nature，1998，439 (7074): 281-284. [7] Iijima, S.，Brabec, C.，Maiti, A.. Structural flexibility of carbon nanotubes[J]. J. Chem. Phys，1996，104(5): 2089-2092. [8] Eder D.. Carbon nanotube-inorganic Hybrids[J]. Chem. Rev，2010，110(3): 1348-1385. [9] Bin Liu，Hua Chun Zeng. Carbon Nanotubes Supported Mesoporous Mesocrystals of Anatas TiO2[J]. Chem. Mater，2008，20，2711–2718. [10] Pyrgiotakis G.，Lee S. H.，Sigmund W. M.. Advanced Photocatalysis with Anatase Nano-Coated Multi-Walled Carbon Nanotubes[M]. MRS Spring Meeting，San Francisco，CA 2005. [11] MA-Lei(马磊)，CHEN Ai-ping(陈爱平)，LU Jing-dong(陆金东). HE Hong-bo(何洪波). Synthesis and Photocatalytic Properties of CNTs/Fe-Ni/TiO2 by Fluidized Bed-chemical Vapor Deposition Method[J]. Journal of Inorganic Materials (无机材料学报)，2012，27(1)，33-37. [12] LU Jin-dong(陆金东)， CHEN Ai-ping(陈爱平)，MA-Lei(马磊)，HE Hong-bo(何洪波). Synthesis of CNTs-Ni-TiO2 nanocomposites by in-situ fluidized bed CVD and its photocatalytic activity[J]. Journal of Chemical Industry and Engineering(化工学报)，2012，63(4)：1070-1075. [13] Langlet M.，Kim A.，Audier M.，Guillard C.，Herrmann J.M.. Transparent photocatalytic films deposited on polymer substrates from sol-gel processed titania sols [J]. Thin Solid Films，2003，429，13-21. [14] Dominik Eder，Alan H. Windle. Carbon-Inorganic Hybrid Materials: The Carbon-Nanotube/TiO2 Interface[J]. Adv. Mater，2008，20，1787–1793. [15] Maria J.，Sampaio，Cláudia G.，Silva，Rita R.N.，Marques. Carbon nanotube-TiO2 thin films for photocatalytic applications[J]. Catalysis Today，2011，61，91-96. [16] Ma L.，Chen A.P.，Zhang Z.，Lu J.D.，He H.B.. In-situ fabrication of CNT/TiO2 interpenetrating network film on nickel substrate by chemical vapour deposition and application in photoassisted water electrolysis[J]. Catalysis Communications，2012，21，27-31. [17] Lei Ma, Aiping Chen, Zhe Zhang, Jindong Lu, Hongbo He, Chunzhong Li. In-situ fabrication of CNT/TiO2 interpenetrating network film on nickel substrate by chemical vapour deposition and application in photoassisted water electrolysis. Catalysis Communivations, 2012, 21:27-31.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com