Synthesis and study of hybrid materials based on a nafion membrane and hydrated titania

被引:1
|
作者
Safronova, E. Yu. [1 ]
Safronov, D. V. [2 ]
Lysova, A. A. [2 ]
Bobreshova, O. V. [2 ]
Stenina, I. A. [1 ]
Yaroslavtsev, A. B. [1 ,3 ]
机构
[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow, Russia
[2] Voronezh State Univ, Voronezh 394693, Russia
[3] Russian Acad Sci, AV Topchiev Petrochem Synth Inst, Moscow, Russia
基金
俄罗斯科学基金会;
关键词
hybrid membranes; Nafion; titania; diffusion permeability; proton conductivity; CONDUCTIVITY;
D O I
10.1134/S0965544115100217
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The properties of hybrid membranes based on a perfluorosulfonated Nafion polymer and hydrated titania are described. The membranes have been prepared by casting from a solution containing particles of a dopant preformed by precipitation at different pH values or a precursor for further synthesis of titania. The dependence of the conductivity of these samples on relative humidity and temperature has been studied. Modification leads to an increase in the proton conductivity of the membranes; higher values are obtained for the samples prepared using preformed TiO2 particles. It has been shown that the background of the dopant has an effect on the conductivity value: at low relative humidity, higher values are obtained using titania with a higher degree of hydration. The introduction of small amounts of the dopant (1.5-3 wt %) leads to an increase in the cation transport selectivity compared to that of the unmodified membrane.
引用
收藏
页码:822 / 826
页数:5
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