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实验发现,盐酸四环素能够很好吸附到Nafion膜上,动力学研究表明其吸附是与浓度相关并由扩散控制的一级动力学过程,扩散系数为8.5×10-9 cm2 s-1,遵循BET吸附等温线,表明其多层吸附特性.研究表明,当吸附了盐酸四环素的Nafion膜浸入合适浓度的氯金酸溶液时,盐酸四环素能够介导金微纳米晶体在Nafion膜上的生长,且通过简单改变氯金酸溶液的浓度,可以调控金微纳米晶体的形态.这一实验结果为金属微纳米材料Nafion聚合物复合膜的制备提供了新思路,这种金微纳米材料Nafion聚合物复合膜在化学生物传感设计和材料科学领域具有潜在的应用价值.
It was found that tetracycline hydrochloride adsorbed well to Nafion membrane. Kinetic studies showed that the adsorption was concentration-dependent and controlled by diffusion. The diffusion coefficient was 8.5 × 10-9 cm2 s-1. The BET Adsorption isotherms, indicating multi-layer adsorption characteristics.The results show that when the adsorption of tetracycline hydrochloride Nafion membrane immersed in a suitable concentration of chloroauric acid solution, tetracycline hydrochloride can mediate the growth of gold micro-nanocrystals in the Nafion membrane, and by A simple change of the concentration of the chloroauric acid solution can regulate the morphology of gold micro-nanocrystals.The experimental results provide a new idea for the preparation of Nafion polymer composite film of metal micro-nano materials, the gold micro-nano material Nafion polymer composite film It has potential application value in chemical biosensing design and material science.