Langmuir--Schaefer films of Nafion with incorporated TiO(2) nanoparticles.
Langmuir--Schaefer films of Nafion with incorporated TiO(2) nanoparticles.
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Langmuir--Schaefer 掺入 TiO(2) 纳米颗粒的 Nafion 薄膜。
DOI：
10.1021/la048837l
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
C. Nicolini
中科院分区：
文献类型：
--
作者：
P. Bertoncello;A. Notargiacomo;C. Nicolini
提出了一种将纳米TiO（2）粒子嵌入到全氟离聚体中的简单方法。采用Langmuir-Schaefer（LS）技术制备了Nafion超薄膜。的压力-面积等温线研究的一个朗缪尔单层的Nafion在空气-水界面上的不同浓度的NaCl作为亚相，使我们能够找到最佳的实验条件，沉积稳定的朗缪尔-谢弗膜。通过将Nafion LS膜浸渍在TiO（2）纳米颗粒溶液中来进行TiO（2）纳米颗粒的掺入。用紫外-可见分光光度计检测了TiO 2掺杂的均匀性。用原子力显微镜研究了Nafion、Nafion/TiO（2）纳米粒子薄膜的形貌以及退火过程中的变化。有趣的是，AFM研究表明，Nafion和Nafion/TiO（2）LS薄膜具有高达600 ℃的热稳定性。
An easy method of incorporating TiO(2) nanoparticles into Nafion perfluorinated ionomer is proposed. Ultrathin films of Nafion were prepared by employing the Langmuir-Schaefer (LS) technique. The pressure-area isotherm study of a Langmuir monolayer of Nafion at the air-water interface on different concentrations of NaCl as the subphase allowed us to find the best experimental conditions for the deposition of stable Langmuir-Schaefer films. Incorporation of TiO(2) nanoparticles was performed by dipping Nafion LS films in a solution of TiO(2) nanoparticles. The uniformity of the TiO(2) incorporation was detected by UV-visible spectroscopy. The morphology of the Nafion, Nafion/TiO(2) nanoparticles thin films, and the changes due to the annealing procedure were investigated by atomic force microscopy. Interestingly, the AFM investigation showed that Nafion and Nafion/TiO(2) LS films have thermal stability up to 600 degrees C.