| 谢艳招,曾丽珍,仲亮,杨倩影,赵林,刁勇.生物质C-N-P自掺杂TiO2的合成及其对亚甲基兰的光催化降解活性[J].分子催化,2017,31(6):513-522 |
| 生物质C-N-P自掺杂TiO2的合成及其对亚甲基兰的光催化降解活性 |
| Synthesis of C-N-P co-doped TiO2 Composite with Biomass as Dopant and Its Photocatalytic Activity in the Degradation of Methylene Blue |
| 投稿时间：2017-07-25 修订日期：2017-09-30 |
| DOI： |
| 中文关键词: 共掺杂 TiO2 超声辐照 光催化 禁带宽度 亚甲基兰 |
| 英文关键词:co-doped TiO2 ultrasonic irradiation photocatalyst band gap methylene blue |
| 基金项目:国家自然科学基金资助项目（U1405215）；福建省教育厅科技类（产学研）项目（JAT160671）；福建省泉州市科技局项目（2016G061） |
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| 中文摘要: |
| 采用溶胶-超声辐照技术同步合成了生物质C-N-P自掺杂TiO2复合催化剂，通过X射线光电子能谱（XPS）、X射线衍射（XRD）、扫描电子显微镜（FESEM）、紫外-可见漫反射光谱（UV-Vis-DRS）及光致发光光谱（PL）对样品进行了表征.以亚甲基兰（MB）为目标污染物，研究了C-N-P共掺杂TiO2的可见光光催化性能.实验结果表明，在可见光照射下，光催化反应时间为2 h时，C-N-P共掺杂TiO2复合催化剂对亚甲基兰的降解效率最高可达98.5%；相比纯TiO2，C-N-P共掺杂TiO2复合催化剂的比表面积增大，吸收边带红移，禁带宽度减小，相变温度升高，光生载流子复合率降低. |
| 英文摘要: |
| The C-N-P co-doped TiO2 composite was synthesized synchronously by sol-ultrasonic cavitation technology using biomass as dopant, and characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction(XRD), field emission scanning electron microscopy (FESEM), UV-Vis diffuse reflectance spectroscopy (UV-Vis-DRS), photoluminescence (PL). The visible light photocatalytic activity of the C-N-P co-doped TiO2 was evaluated using methylene blue (MB) as the target pollutant. The results showed, after 2 hours of photocatalytic reaction under visible light, the degradation efficiency of methylene blue was up to 98.5% catalyzed by C-N-P co-doped TiO2 composite; Compared with pure TiO2, C-N-P co-doped TiO2 composite possess larger specific surface area, absorption edge red shifting, smaller band gap, higher phase-transition temperature and lower recombination rate of photo-generated carriers, that differences are beneficial to the improvement of catalytic activity. |
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