|
|||||
|
|
| B离子掺杂TiO2催化剂(TiO2－xBx)光催化活性的研究 | |
| 引用本文： | 龙绘锦,孟庆巨,元晶,杨文胜,曹亚安. B离子掺杂TiO2催化剂(TiO2－xBx)光催化活性的研究[J]. 化学学报, 2008, 66(6): 657-661 |
| 作者姓名： | 龙绘锦 孟庆巨 元晶 杨文胜 曹亚安 |
| 作者单位： | 1. 南开大学物理学院,天津,300071;吉林大学化学学院,长春,130023 2. 吉林大学电子科学与工程学院,长春,130023 3. 南开大学物理学院,天津,300071 4. 南开大学泰达学院应用物理学院,天津,300457 5. 南开大学物理学院,天津,300071;南开大学泰达学院应用物理学院,天津,300457 |
| 基金项目： | 国家自然科学基金(Nos.20573060.50472035)和长江学者和创新团队发展计划资助项目. |
| 摘 要： | 采用溶胶-凝胶法制备出纳米TiO2和TiO2－xBx催化剂. 光催化实验证明, TiO2－xBx催化剂的紫外、可见光催化活性均高于TiO2. XRD, XPS和Raman结果表明, B离子是以取代式掺杂占据了TiO2的O2－的晶格位置. UV-Vis和PL谱的结果表明, B离子的2p轨道与O的2p轨道形成混合价带, 产生可见光响应, B离子的掺入有效地阻止了光生载流子的复合, 促进了其分离, 是TiO2－xBx催化剂紫外、可见光催化活性提高的主要原因. |
| 关 键 词： | 溶胶-凝胶法 硼离子掺杂 TiO2－xBx催化剂 光催化活性 |
| 收稿时间： | 2007-05-09 |
| 修稿时间： | 2007-05-09 |
Study on Photocatalytic Activity of Boron Doped TiO2 Catalyst (TiO2-xBx) |
|
| LONG, Hui-Jin,MENG, Qing-Ju,YUAN, Jing,YANG, Wen-Sheng,CAO, Ya-An. Study on Photocatalytic Activity of Boron Doped TiO2 Catalyst (TiO2-xBx)[J]. Acta Chimica Sinica, 2008, 66(6): 657-661 | |
| Authors: | LONG Hui-Jin MENG Qing-Ju YUAN Jing YANG Wen-Sheng CAO Ya-An |
| Affiliation: | (College of Physics, Nankai University, Tianjin 300071)(Teda College of Applied Physics, Nankai University, Tianjin 300457)(College of Electronic Science and Engineering, Jilin University, Changchun 130023)(College of Chemistry, Jilin University, Changchun 130023) |
| Abstract: | Samples of pure TiO2 and TiO2－xBx were obtained with Ti(OC4H9)4 by sol-gel methods. Compared with the pure TiO2, the samples of TiO2－xBx exhibited higher photocatalytic activity under both ultraviolet and visible light irradiation. The reasons were discussed, based on the characterization with XRD, Raman, XPS, UV-Vis and PL spectra. The lattice O is substituted by B, and the orbital of B2p is mixed with O2p orbitals, which is responsible for the band gap narrowing. The raise of the photocatalytic activity is chiefly because B doping enhanced the absorption of visible light, and promoted the separation of photogenerated carriers. |
| Keywords: | sol-gel method B doping TiO2－xBx photocatalyst photocatalytic activity |
| 本文献已被 维普 万方数据 等数据库收录！ | |
| 点击此处可从《化学学报》浏览原始摘要信息 | |
| 点击此处可从《化学学报》下载全文 | |