Preparation and Properties of Activated Carbon Supported Nitrogen Doped Visible-light Response TiO2-xNy/AC Photocatalysts
Source abstract
Abstract
将活性炭负载与N掺杂有效结合,采用酸催化水解法在粉状活性炭（AC）表面合成TiO2前驱体,在NH3/N2气氛中程序升温处理制得N掺杂TiO2-xNy/AC（TON/AC）光催化剂.以苯酚为模型物,考查了TON/AC紫外光区、可见光区及太阳光下催化活性以及分离性能、使用寿命.采用XPS、XRD、DRS、FTIR、SEM、低温氮物理吸附对光催化剂的表面特征、吸光特性、晶相结构等进行表征.结果表明,N以阴离子形式进入TiO2体相并置换晶格中的O,适量N掺杂的TON/AC在紫外光区、可见光区及太阳光下均表现出较高的活性.N掺杂在TiO2表面生成Ti-O-N键,形成新的能级结构,使催化剂的吸收红移至450～550nm,诱发TiO2可见光催化活性.AC负载可降低TiO2团聚体的尺寸,增加催化剂比表面积,为光催化降解提供高浓度环境,从而提高光催化效率同时还可改善催化剂分离性能,提高催化剂使用寿命.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Yang J10.1016/j.apsusc.2006.03.078 ↗
2. Tryba B10.1016/S0926-3373(03)00214-5 ↗
3. Herrmann J M10.1016/S0920-5861(99)00187-X ↗
4. null
5. Yu J C10.1016/S0926-3373(01)00277-6 ↗
6. Saha N C10.1063/1.351465 ↗
7. Li Di
8. Yu J G10.1016/j.molcata.2005.10.034 ↗
9. Lee D K10.1016/S1383-5866(03)00175-8 ↗
10. null
11. null
12. Torimoto T10.1016/S1010-6030(96)04503-0 ↗
13. Sato S10.1016/0009-2614(86)87026-9 ↗
14. Wawrzyniak B10.1016/j.apcatb.2005.07.008 ↗
15. Khan S U M10.1126/science.1075035 ↗
16. Nyrne J A10.1016/S0926-3373(97)00101-X ↗
17. null
18. Ingaki M10.1016/S0008-6223(03)00340-3 ↗
19. Ao C H10.1016/S1010-6030(03)00276-4 ↗
20. null
21. Ao C H10.1016/S0926-3373(03)00054-7 ↗
22. Torimoto T10.1016/S1010-6030(96)04503-0 ↗
23. null
24. Ashia R10.1126/science.1061051 ↗
25. null
26. Zhang X10.1016/j.apcata.2005.01.037 ↗
27. Liu S X