| 谢艳招.大豆蛋白改性TiO2的制备及其可见光催化性能[J].分子催化,2016,30(4):372-382 |
| 大豆蛋白改性TiO2的制备及其可见光催化性能 |
| Preparation and Visible-light Photocatalytic Activity of TiO2 Composite Catalyst Modified by Soy protein |
| 投稿时间：2016-01-15 修订日期：2016-06-02 |
| DOI： |
| 中文关键词: 大豆蛋白 二氧化钛 共掺杂 光催化 可见光吸收 |
| 英文关键词:Soy protein TiO2 Codoped Photocatalysis Visible-light absorption |
| 基金项目:福建省教育厅科技类项目(JB12276); 福建师范大学闽南科技学院青年骨干教师培养基金项目(mkq201007) |
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| 中文摘要: |
| 采用溶胶-凝胶法制备了系列大豆蛋白改性 TiO2 复合催化剂．通过元素分析、粒度分析、X 射线衍射(XRD)、场发射扫描电镜（FESEM）、紫外-可见漫反射光谱（UV-Vis）、电化学等方法对所制备的样品进行了表征，以亚甲基蓝为目标降解物，研究了大豆蛋白改性 TiO2 的可见光催化性能．结果表明，大豆蛋白改性可以一步实现 C、N、H 多种非金属元素共掺杂; 相比纯 TiO2，改性后复合催化剂的比表面积增大; 所有样品均为锐钛矿相; 煅烧温度为 400 ℃ 时，复合催化剂的可见光吸收发生明显红移，其禁带宽度较纯 TiO2 窄化了 0.32 eV; 大豆蛋白改性后，复合材料的光电流密度增大; 在可见光照射下，光催化反应 2 h 时，大豆蛋白改性 TiO2 的亚甲基蓝降解效率最高可达 79.4%． |
| 英文摘要: |
| A series of composite catalysts modified by soy protein were prepared by sol-gel method. The samples were characterized by Elemental analysis, Particles size analysis, X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) and electrochemical technology. The visible light-induced degradation of methylene blue (MB) assisted by the composite TiO2 was investigated. The results show that TiO2 is co-doped with C、N、H; compared with pure TiO2, the specific surface of modified composite catalyst is increased; all samples are anatase phase; when the calcinations temperature reaches 400℃, red shift can be obviously found in the visible light absorption of the composite catalyst, and the bandgap narrows by 0.32 eV than pure TiO2; after the modification of the soy protein, the photocurrent density of the composite material is increased; after 2 hours’ irradiation of visible light, the degradation rate of methylene blue in the soy protein modified TiO2 can reach as high as 79.4%. |
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