由蜂窝状结构TBT/PMMA杂化膜制备有序孔结构的TiO2膜
Preparation of Ordered Porous TiO2 Film from Honeycomb Structured TBT/PMMA Hybrid Film
Received date: 2009-11-04
Revised date: 2009-12-13
Online published: 2010-05-12
采用Breath Figures法制备了蜂窝状结构的TBT/PMMA前驱体膜, 气相水热处理(VPH)、热裂解前驱体膜, 制备了TiO2有序孔结构膜, 探讨了气相水热处理、经热裂解去除前驱体膜中聚合物成分过程中结构的变化, 结果表明VPH过程中TBT水解成氢化氧化钛水合物, 形成完善的TiO网络结构, 抵御了高温热裂解去除聚合物过程中“液态化”聚合物的影响, 最终得到有序孔结构的TiO2膜. 同未经水热处理而直接热裂解得到的TiO2膜相比, 有序孔结构的TiO2膜紫外光电化学响应显著提高, 其光电流密度约为前者的3倍.
申延明 , 刘 丹 , 吴 静 , 刘雅祺 , 姬生菲 , 李天舒 . 由蜂窝状结构TBT/PMMA杂化膜制备有序孔结构的TiO2膜[J]. 无机材料学报, 2010 , 25(5) : 485 -489 . DOI: 10.3724/SP.J.1077.2010.00485
TBT/PMMA organic-inorganic hybrid honeycomb patterned film was prepared by Breath Figures method, then it was suffered vapor phase hydrothermal treatment and transformed into ordered porous TiO2 film via pyrolysis process. The hole structure was investigated during the vapor phase hydrothermal treatment and pyrolysis process. The results show that, during the vapor phase hydrothermal treatment, TBT hydrolyzes to titanium hydrogen oxide hydrates, forming the strongerTiOnetworks, which therefore prevents the PMMA from “liquefied” in the pyrolysis process, as a result the ordered porous TiO2 film is obtained. Compared with non-hydrothermal treated TiO2 film, the resulted ordered porous TiO2 film enhances the photoelectrochemical response and its photocurrent density is increased by 3 times under UV light irradiation.
[1]Tsuru T, Kan-no T, Yoshioka T, et al. A photocatalytic membrane reactor for gas-phase reactions using porous titanium oxide membranes. Catal. Today, 2003, 82(1-4): 41-48.
[2]Wold A. Photocatalytic properties of TiO2. Chem. Mater., 1993, 5(3): 280-283.
[3]Hoa M L K, Lu M, Zhang Y. Preparation of porous materials with ordered hole structure. Adv. Colloid. Interface Sci., 2006, 121(1/2/3): 9-23.
[4]李 巍, 靳正国, 刘志峰, 等(LI Wei, et al). 浸渍提拉法制备胶晶模板及有序多孔薄膜.无机材料学报(Journal of Inorganic Materials), 2006, 21(6): 473-480.
[5]Lu M H, Zhang Y. Microbead patterning on porous films with ordered arrays of pores. Adv. Mater., 2006, 18(23): 3094-3098.
[6]Wong K H, Davis T P, Barner-Kowollik C, et al. Honeycomb structured porous films from amphiphilic block copolymers prepared via RAFT polymerization. Polymer, 2007, 48(17): 4950-4965.
[7]Zhang K, Zhang L, Chen Y. Robust organic/inorganic hybrid porous thin films via breathfigure method and gelation process. Macromol. Rapid Commun., 2007, 28(20): 2024-2028
[8]申延明, 吴 静, 卢 欣, 等(SENG Yan-Min, et al).利用Breath Figure法制备具有Honeycomb结构的有机/无机复合膜.高等学校化学学报(Chem.J. Chinese U.), 2009, 30(7): 1464-1468.
[9]Yuwono A H, Liu B H, Xue J M, et al. Controlling the crystallinity and nonlinear optical properties of transparent TiO2PMMA nanohybrids. J. Mater. Chem., 2004, 14: 2978-2987.
[10]Jayaraman A, Subramanyam G, Sindhu S, et al. Biomimetic synthesis of calcium carbonate thin films using hydroxylated poly(methyl methacrylate) (PMMA) template. Crystal Growth & Design, 2007, 7(1): 142-146.
[11]Khaled S M, Sui R, Charpentier P A, et al. Synthesis of TiO2-PMMA nanocomposite: using methacrylic acid as a coupling agent. Langmiur, 2007, 23(7): 3988-3995.
[12]于春玲, 翟 锦, 高雪峰, 等(YU Chun-Ling, et al). 掺杂态聚苯胺蜂窝状有序多孔薄膜的制备及形成机制的探讨. 高等学校化学学报(Chem. J. Chinese U.), 2004, 25(7): 1322-1324.
[13]Zhao H, Shen Y, Zhang S, et al. A vapor phase hydrothermal modification method converting a honeycomb structured hybrid film into photoactive TiO2 film. Langmiur, 2009, 25(18): 11032-11037.
[14]Wang S, Wang M, Lei Y, et al. “Anchor effect” in poly(styrene maleic anhydride)/TiO2 nanocomposites. J. Mater. Sci. Lett., 1999, 18(24): 2009-2012.
[15]张志林, 叶 淼, 孙伟民. 平板波导的溶胶凝胶法制备与测试.光子学报, 2009, 38(3): 561-564.
[16]雷建飞, 李伟善(LEI Jian-Fei, et al). 多孔阵列TiO2/Ti的光电催化性能. 物理化学学报(Acta Phys.-Chim. Sin.), 2009, 25(6): 1173-1178.
[17]吴建生, 宿 艳, 陈 硕, 等. 硅掺杂TiO2 纳米管阵列的制备及光电催化活性的研究.功能材料, 2009, 40(9): 1429-1431.
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