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发明公开
CN103131031A 可见光响应型纳米TiO2/淀粉复合膜及其制备方法和应用 失效 - 权利终止

可见光响应型纳米TiO2/淀粉复合膜及其制备方法和应用
摘要：
本发明属于农产品加工与贮藏技术方法领域，具体公开一种可见光响应型纳米TiO2/淀粉复合膜及其制备方法和应用。可见光响应型纳米TiO2/淀粉复合膜的制备方法包括以下步骤：（1）七钼酸铵与纳米TiO2（德国Degussa分司生产的纳米P25粉体）经搅拌，超声，旋蒸，干燥，研磨，煅烧后得到具有可见光催化活性的改性纳米TiO2；（2）将玉米酯化淀粉、改性纳米TiO2和甘油，搅拌，超声，加热成膜，干燥，揭膜，即得到掺杂改性纳米TiO2的淀粉复合膜；（3）将改性纳米TiO2制备成悬浮液，再将复合膜浸入到悬浮液中，浸泡拉出，干燥，得到可见光响应型纳米TiO2/淀粉复合膜。
摘要（英）：

The invention belongs to the field of agricultural product processing and storing technologies and methods, and particularly discloses a visible-light response type nanometer TiO2/starch composite membrane, and a preparation method and application of the visible-light response type nanometer TiO2/starch composite membrane. The preparation method of the visible-light response type nanometer TiO2/starch composite membrane includes the following steps: (1) processing ammonium heptamolybdate and nanometer TiO2 (nanometer P25 powders produced by German Degussa) through stirring, ultrasound, rotary steaming, drying, grinding and roasting to obtain modified nanometer TiO2 with visible-light catalytic activity; (2) processing corn esterified starch, the modified nanometer TiO2 and glycerol through stirring, ultrasound, heating to form a membrane, drying and membrane uncovering to obtain a starch composite membrane mixed with the modified nanometer TiO2; and (3) using the modified TiO2 to prepare suspension liquid, soaking the composite membrane into the suspension liquid, drawing out the composite membrane after soaking, drying the composite membrane, and obtaining the visible-light response type nanometer TiO2/starch composite membrane.

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