摘要
采用表面活性剂十六烷基三甲基溴化铵(CTAB)辅助合成SiO_2/TiO_2核壳微球,并利用XRD、SEM、EDS、BET、BJH及FT-IR等分析方法,对SiO_2/TiO_2与葡萄糖氧化酶的吸附界面进行表征。结果表明:SiO_2/TiO_2微球是由TiO_2和SiO_2组成,直径约250 nm,TiO_2以纳米薄层方式均匀地沉积在SiO_2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。
The hexadecyl trimethyl ammonium bromide （ CTAB ） , as the structure-directing agent, was introduced to prepared SiO2/TiO2 core-shell microspheres. Then the adsorption interface between materials and glucose oxidase were characterized by XRD , SEM, EDS , BET, BJH and FT-IR. The characterization results showed that the SiO2/TiO2 microspheres are composed of TiO2 and SiO2, and about 250 nm in diameter. TiO2 was uniformly deposited on the surface of SiO2 take the form of nanometer thin layer. After adsorption of glucose oxidase, the size change is not obvious. The XRD peak strength was weakened and （112） crystal plane diffraction peak was disappeared. The specific surface area and average pore diameter are decreased. FT-IR analysis show that amide II characteristic peak shift, peptide bond N-H plane bending vibration and C-N stretching vibration has changed.
作者
陶玉贵
郝玉敬
朱龙宝
杨良军
姜忠义
TAO Yu-gui HA ZHU Long-bao YANG Liang-jun JIANG Zhong-yi(College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000,China School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072,China)
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2016年第9期2326-2330,共5页
Journal of Synthetic Crystals
基金
安徽省自然科学基金(1308085MC51)
安徽省高校自然科学基金重点项目(KJ2012A034)
全国大学生创新创业训练计划(201510363027)
