采用氨浸法制备了不同Fe3+含量的Fe3+/ZnO光催化剂,并用X射线衍射、N2吸附、X射线光电子能谱和紫外-可见漫反射光谱对纳米Fe3+/ZnO进行了表征以壬基酚聚氧乙烯醚(NPE-10)为模型污染物,分别在紫外光和可见光下考察了纳米Fe3+/ZnO的光催化活性.结果表明,该方法能成功地将Fe掺杂到ZnO晶体上,且随着Fe3+添加量的增加,ZnO的晶粒尺寸逐渐减小,比表面积逐渐增大.与纳米ZnO样品相比,Fe3+/ZnO中Fe 2p结合能减小,而Zn 2p和O 1s结合能增大,ZnO表面的羟基氧和吸附氧含量增加,光催化活性提高.当Fe3+的添加量大于0.5%时,Fe3+/ZnO样品的吸收光谱发生红移,在可见光区出现吸收.光催化降解结果显示,0.5%Fe3+/ZnO样品的光催化活性最高,在紫外光和可见光照射3 h后对NPE-10的降解率分别比纯ZnO提高18%和69%.
参考文献
| [1] | Fujishima A;Rao T N;Tryk D A .[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2000,1(01):1. |
| [2] | Hoffmann MR;Martin S T;ChoiW;Bahnemann D W .[J].Chemical Reviews,1995,95(01):69. |
| [3] | 冯春波,杜志平,赵永红,台秀梅,李秋小.Au改性纳米TiO2材料对NPE-10光催化降解的活性[J].物理化学学报,2006(08):953-957. |
| [4] | Choi W;Termin A;Hoffmann M R .[J].Journal of Physical Chemistry,1994,98(51):13669. |
| [5] | Navio J A;Colon G;Trillas M;Peral J Domenech X Testa J J Padron J Rodriguez D Litter M I .[J].Applied Catalysis B:Environmental,1998,16(02):187. |
| [6] | Yu J G;Zhao X J;Du J C;Chen W M .[J].Journal of Sol-Gel Science and Technology,2000,17(02):163. |
| [7] | Kineri T;Mori M;Kadono K;Sakaguchi T Miya M Wakabayashi H Tsuchiya T .[J].Journal of the Ceramic Society of Japan,1993,101(12):1340. |
| [8] | Litter M I;Navio J A .[J].Journal of Photochemistry and Photobiology A:Chemistry,1996,98(03):171. |
| [9] | 水淼,岳林海,徐铸德.几种制备方法的掺铁二氧化钛光催化特性[J].物理化学学报,2001(03):282-285. |
| [10] | 周磊,刘昌,赵文宽,胡翎,方佑龄.液相沉积法制备光催化活性掺铁TiO2薄膜[J].催化学报,2003(05):359-363. |
| [11] | 张靖峰,杜志平,赵永红,台秀梅.纳米Ag/ZnO光催化剂及其催化降解壬基酚聚氧乙烯醚性能[J].催化学报,2007(05):457-462. |
| [12] | Hidaka H;Ihara K;Fujita Y;Yamada S Pelizzetti E Serpone N .[J].Journal of Photochemistry and Photobiology A:Chemistry,1988,42(2-3):375. |
| [13] | Klug H P;Alexander L E.X-Ray Diffraction Procedures for Polycrystalline and Amorphous Materials[M].New York:Wiley,1974:618. |
| [14] | Yu JG;Zhou MH;Yu HG;Zhang QJ;Yu Y .Enhanced photoinduced super-hydrophilicity of the sol-gel-derived TiO2 thin films by Fe-doping[J].Materials Chemistry and Physics,2006(2/3):193-196. |
| [15] | 陈恒,龙明策,徐俊,蔡伟民.可见光响应的氯掺杂TiO2的制备、表征及其光催化活性[J].催化学报,2006(10):890-894. |
| [16] | Jiang HB.;Gao L. .Enhancing the UV inducing hydrophilicity of TiO2 thin film by doping Fe ions[J].Materials Chemistry and Physics,2003(3):878-881. |
| [17] | Jing LQ.;Sun XJ.;Shang J.;Cai WM.;Xu ZL. .The surface properties and photocatalytic activities of ZnO ultrafine particles[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2001(3/4):308-314. |
| [18] | 井立强,李晓倩,李姝丹,王百齐,辛柏福,付宏刚,王德军,蔡伟民.纳米Au/TiO2光催化剂的XPS和SPS研究[J].催化学报,2005(03):189-193. |
| [19] | Long MC;Cai WM;Wang ZP;Liu GZ .Correlation of electronic structures and crystal structures with photocatalytic properties of undoped, N-doped and I-doped TiO2[J].Chemical Physics Letters,2006(1-3):71-76. |
| [20] | Sclafani A;Palmisano L;Schiavello M .[J].Journal of Physical Chemistry,1990,94(02):829. |
| [21] | Ohtani B;Ogawa Y;Nishimoto S I .[J].Journal of Physical Chemistry B,1997,101(19):3746. |
| [22] | Carp O;Huisman C L;Reller A .[J].Progr Solid State Chem,2004,32(1-2):33. |
| [23] | Zhou M H;Yu J G;Cheng B .[J].Journal of Hazardous Materials,2006,137(03):1838. |
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