| 氮掺杂锐钛矿TiO_2光催化剂的制备和表征 | |
| 程萍 ; 邓长生 ; 顾明元 ; 戴遐明 ; CHENG Ping ; DENG Chang-sheng ; GU Ming-yuan ; DAI Xia-ming | |
| 2010-06-04 ; 2010-06-04 | |
| 关键词 | TiO2 氮掺杂 可见光 光催化 titania nitrogen doping visible light photocatalysis TQ426 |
| 其他题名 | Preparation and Characterization of Nitrogen-doped Anatase Titania Photocatalyst |
| 中文摘要 | 采用氨气氮化工艺制备了氮掺杂的TiO2光催化剂,研究了氮化温度对光催化性能的影响。研究表明,在TiO2中加入5%的SiO2能够有效阻止TiO2在NH3中热处理时可能发生的锐钛矿相向金红石相的转变,并减缓比表面积降低;氮化后的TiO2样品中N置换TiO2晶格中的O原子形成O—Ti—N键,在TiO2的禁带中形成了氮掺杂能级,从而使TiO2的吸收边发生红移。在700℃的氨气流中氮化处理后的5%SiO2/TiO2样品,N元素含量为0.28%,能够吸收550 nm以下的可见光,比表面积为129 m2/g,全为锐钛矿型TiO2,表现出最佳可见光光催化性能。; The nitrogen doped titania photocatalysts were prepared by nitridation process.The influence of nitriding temperature on the photocatalytic property has been researched.The addition of 5% SiO2 effectively prevented the transformation of titania from anatase to rutile as well as the decrease of specific surface area of the photocatalyst.XPS result indicated that N substituted O in TiO2 crystal lattice to form O—Ti—N,which resulted in an redshift of the absorption edge of TiO2.5%SiO2/TiO2 sample calcined at 700 ℃ for 3 hours in a flow of NH3 atmosphere can absorb λ<550 nm visible light and showed the higher photoactivity compared with samples calcined at 600 ℃ and 800 ℃.; 中国博士后科学基金(20060400055); 清华大学新型陶瓷与精细工艺国家重点实验室开放基金 |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/35640]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 程萍,邓长生,顾明元,等. 氮掺杂锐钛矿TiO_2光催化剂的制备和表征[J],2010, 2010. |
| APA | 程萍.,邓长生.,顾明元.,戴遐明.,CHENG Ping.,...&DAI Xia-ming.(2010).氮掺杂锐钛矿TiO_2光催化剂的制备和表征.. |
| MLA | 程萍,et al."氮掺杂锐钛矿TiO_2光催化剂的制备和表征".(2010). |
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