| 生物质C-N-P自掺杂TiO_2的合成及其对亚甲基兰的光催化降解活性 |
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| 引用本文： | 谢艳招,曾丽珍,仲亮,杨倩影,赵林,刁勇.生物质C-N-P自掺杂TiO_2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. |
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| 作者姓名： | 谢艳招 曾丽珍 仲亮 杨倩影 赵林 刁勇 |
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| 作者单位： | 福建师范大学 闽南科技学院, 福建 泉州 362332,福建师范大学 闽南科技学院, 福建 泉州 362332,福建师范大学 闽南科技学院, 福建 泉州 362332,福建师范大学 闽南科技学院, 福建 泉州 362332,福建师范大学 闽南科技学院, 福建 泉州 362332;华侨大学 生物医学学院, 福建 泉州 362021,华侨大学 生物医学学院, 福建 泉州 362021 |
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| 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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| 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TiO_2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TiO_2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TiO_2复合催化剂对亚甲基兰的降解效率最高可达9 8.5%;相比纯TiO_2,C-N-P共掺杂TiO_2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.
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| 关 键 词： | 共掺杂 TiO2 超声辐照 光催化 禁带宽度 亚甲基兰 |
| 收稿时间： | 2017/7/25 0:00:00 |
| 修稿时间： | 2017/9/30 0:00:00 |
Synthesis of C-N-P co-doped TiO2 Composite with Biomass as Dopant and Its Photocatalytic Activity in the Degradation of Methylene Blue |
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| XIE Yan-zhao,ZENG Li-zhen,ZHONG Liang,YANG Qian-ying,ZHAO Lin and DIAO Yong.Synthesis of C-N-P co-doped TiO2 Composite with Biomass as Dopant and Its Photocatalytic Activity in the Degradation of Methylene Blue[J].Journal of Molecular Catalysis (China),2017,31(6):513-522. |
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| Authors: | XIE Yan-zhao ZENG Li-zhen ZHONG Liang YANG Qian-ying ZHAO Lin and DIAO Yong |
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| Institution: | Minnan Science and Technology Institute Fujian Normal University, Quanzhou 362332, China,Minnan Science and Technology Institute Fujian Normal University, Quanzhou 362332, China,Minnan Science and Technology Institute Fujian Normal University, Quanzhou 362332, China,Minnan Science and Technology Institute Fujian Normal University, Quanzhou 362332, China,Minnan Science and Technology Institute Fujian Normal University, Quanzhou 362332, China;School of Biomedical Sciences, Huaqiao University, Quanzhou, 362021, China and School of Biomedical Sciences, Huaqiao University, Quanzhou, 362021, China |
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| Abstract: | 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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| Keywords: | co-doped TiO2 ultrasonic irradiation photocatalyst band gap methylene blue |
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