研究了VO2+在3种阳离子交换膜PE01,NF120以及Nafion1135中的自扩散行为,采用UV-3802可见-紫外分光光度仪测定VO2+浓度,建立浓度与时间的关系,用Ct=Ct∞(1-exp(-αt))经验方程拟合实验数据,得到VO2+在3种膜PE01,NF120以及Nafion1135中的自扩散方程.结合Fick扩散理论,推导出了VO2+在膜中的扩散系数D与方程中经验常数α的关系,计算出了VO2+在3种阳离子交换器Nafion1135,PE01以及NF120中的扩散系数分别为2.66×10-13,2.09×10-13和3.26×10-13 m2/s.在所研究的阳离子交换膜中,PE01膜对VO2+具有最好的阻隔作用.
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