| Nafion? / TiO2复合膜的质子传导性能研究 |
| Proton Conductivity Study of Nafion? / TiO2 Composite Membranes |
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| 摘要: |
| 关键词: Nafion? / TiO2复合膜 质子传导 阻醇性能 |
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| Abstract: Nafion® / TiO2 composite membranes were prepared by in-situ chemical reaction method using
Ti(OC4H9)4 and Nafion® 117 as raw materials. The membranes were characterized by UV, FTIR-ATR and XRD, respectively. Methanol permeability and water uptake were investigated as a function of
TiO2 contents. The conductivity of the membranes was measured under water vapor pressure (2.644 7 kPa) or in dry atmospheres. The XRD results showed that the titanium dioxide in Nafion® membranes were crystallized in anatase phase with an average crystaline diameter of 3.0 nm. The water uptake of the composite membranes was larger than that of the pure Nafion® membrane when the
TiO2 loading was within 14wt%. The methanol permeability of the membrane decreased as the
TiO2 loading increased. The addition of 3wt% TiO2 to Nafion® membranes improved the conductivity in dry measurement conditions. The proton conductivity of the composite membrane increased greatly after the hydrothermal treatment at 160 ℃ for 2 hours. |
| Keywords: Nafion? / TiO2 composite membrane proton conductivity methanol permeation |
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| 赵红,赵辉,霍丽华,任丹,高山.Nafion? / TiO2复合膜的质子传导性能研究[J].无机化学学报,2006,22(1):106-110. |
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