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采用表面活性剂十六烷基三甲基溴化铵(CTAB)辅助合成SiO2/TiO2核壳微球,并利用XRD、SEM、EDS、BET、BJH及FT-IR等分析方法,对SiO2/TiO2与葡萄糖氧化酶的吸附界面进行表征.结果表明:SiO2/TiO2微球是由TiO2和SiO2组成,直径约250 nm,TiO2以纳米薄层方式均匀地沉积在SiO2表面;样品吸附葡萄糖氧化酶后的尺寸变化不明显;材料的XRD峰强度有所减弱并且(112)晶面的衍射峰消失;其比表面积和平均孔径均减小;FT-IR分析显示酰胺Ⅱ区特征峰发生转移,肽键N-H平面的弯曲振动和C-N的伸缩振动发生了变化.

参考文献

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