在密闭不锈钢反应器内研究了Ce0.5-xZr0.5-xBa2xO2负载锐钛型TiO2光催化降解气相苯的性能. 确定了该系列光催化剂的最佳Ba含量,并应用X射线衍射、紫外-可见漫反射光谱以及X射线光电子能谱对催化剂进行了表征. 结果表明, TiO2在载体表面均匀分散. 在210～400 nm范围内, TiO2/Ce0.5-xZr0.5-xBa2xO2比TiO2吸收更多的紫外光. TiO2/Ce0.5-xZr0.5-x-Ba2xO2包含Ti和O两种元素, TiO2/Ce0.5-xZr0.5-xBa2xO2的Ti 2p结合能向低能端偏移. Ce0.5-xZr0.5-xBa2xO2表面负载TiO2能有效提高催化剂的光催化活性. Ce0.5-xZr0.5-xBa2xO2的作用是转移电子和使催化剂在紫外区的吸收增强.
参考文献
| [1] | Kim S B;Hong S C .[J].Applied Catalysis B:Environmental,2002,35(04):305. |
| [2] | Alberici R M;Jardim W F .[J].Applied Catalysis B:Environmental,1997,14(1-2):55. |
| [3] | Bertinchamps F;Treinen M;Blangenois N;Mariage E Gaigneaux E M .[J].Journal of Catalysis,2005,230(02):493. |
| [4] | Wang J H;Ray M B .[J].Separation and Purification Technology,2000,19(1-2):11. |
| [5] | Einaga H;Futamura S;Ibusuki T .[J].Applied Catalysis B:Environmental,2002,38(03):215. |
| [6] | Zhao H;Xu S H;Zhong J B;Bao X H .[J].Catalysis Today,2004,93-95:857. |
| [7] | Ameen M M;Raupp G B .[J].Journal of Catalysis,1999,184(01):112. |
| [8] | 张前程,张凤宝,张国亮,张晓萍.超细钴掺杂二氧化钛的制备、表征及气相光催化性能[J].燃料化学学报,2004(02):240-243. |
| [9] | 郭泉辉,杨建军,毛立群,李庆霖,张治军.Pt/TiO2光催化降解甲苯[J].化学研究,2001(03):53-55. |
| [10] | d'Hennezel O;Pichat P;Ollis D F .[J].Photobiol A,1998,118(03):197. |
| [11] | Kim TK;Lee MN;Lee SH;Park YC;Jung CK;Boo JH .Development of surface coating technology of TiO2 powder and improvement of photocatalytic activity by surface modification[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2005(1/2):171-177. |
| [12] | Trovarelli A.;Rocchini E.;de Leitenburg C.;Dolcetti G.;Boaro M. .Some recent developments in the characterization of ceria-based catalysts[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(0):584-591. |
| [13] | Fornasiero P.;Rao GR.;Kaspar J.;Meriani S.;Trovarelli A. Graziani M.;Dimonte R. .RH-LOADED CEO2-ZRO2 SOLID SOLUTIONS AS HIGHLY EFFICIENT OXYGEN EXCHANGERS - DEPENDENCE OF THE REDUCTION BEHAVIOR AND THE OXYGEN STORAGE CAPACITY ON THE STRUCTURAL PROPERTIES[J].Journal of Catalysis,1995(1):168-177. |
| [14] | Nagai Y;Yamamoto T;Tanaka T;Yoshida S Nonaka T Okamoto T Suda A Sugiura M .[J].Catalysis Today,2002,74(3-4):225. |
| [15] | 余家国,赵修建,赵青南,杜金成.TiO2光催化薄膜的XPS研究[J].材料研究学报,2000(02):203-209. |
| [16] | Cao L X;Gao Z;Suib S L;Obee T N Hay S O Freihaut J D .[J].Journal of Catalysis,2000,196(02):253. |
| [17] | Nelson AE.;Schulz KH. .Surface chemistry and microstructural analysis of CexZr1-xO2-y model catalyst surfaces[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(3/4):206-221. |
| [18] | Kwon YT.;Lee WI.;Choi GJ.;Do YR.;Song KY. .Photocatalytic behavior of WO3-loaded TiO2 in an oxidation reaction[J].Journal of Catalysis,2000(1):192-199. |
| [19] | Pal B;Sharon M;Nogami G .[J].Materials Chemistry and Physics,1999,59(03):254. |
| [20] | Descorme C.;Duprez D.;Madier Y. .Infrared study of oxygen adsorption and activation on cerium-zirconium mixed oxides[J].Journal of Catalysis,2000(1):167-173. |
| [21] | Binet C;Daturi M;Lavalley J C .[J].Catalysis Today,1999,50(02):207. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%