用焙烧前驱物碱式碳酸锌的方法制备了ZnO纳米粒子,采用光还原沉积贵金属的方法制备了Pd/ZnO和Ag/ZnO复合纳米粒子,并利用ICP,XRD,TEM和XPS等测试技术对样品进行了表征,初步探讨了贵金属在ZnO纳米粒子表面形成原子簇的原因. 以光催化氧化气相正庚烷为模型反应,考察了样品的光催化活性以及贵金属沉积量对催化剂活性的影响. 结果表明: 沉积适量的贵金属,ZnO纳米粒子光催化剂的活性大幅度提高. 同时,深入探讨了表面沉积贵金属的ZnO纳米粒子光催化剂活性有所提高的内在原因.
参考文献
| [1] | 张立德;牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001:16. |
| [2] | Murata Y.;Ishikawa S.;Yokoyama S.;Fukuta S. .Photoelectrochemical properties of TiO2 rutile microalloyed with 4d and 5d transition elements[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,2000(1/2):157-165. |
| [3] | YOON K H;Cho J;Kang D H .[J].Materials Research Bulletin,1999,34(09):1451. |
| [4] | Tryk D A;Fujishima A;Honda K .Electrochim Acta[J].Electrochimica Acta,2000(45):2363. |
| [5] | 韩兆慧,赵化侨.半导体多相光催化应用研究进展[J].化学进展,1999(01):1-10. |
| [6] | 林元华;袁方利;黄淑兰;李晋林 .[J].功能材料,1999,30(05):507. |
| [7] | Litter M I .[J].Applied Catalysis B:Environmental,1999(23):89. |
| [8] | Fujishima A;Rao T N;Tryk D A .[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2000,1(01):1. |
| [9] | Hoffmann M R;Martin S T;Choi W;Bahnemann D W .[J].Chemical Reviews,1995,95(01):69. |
| [10] | 沈伟韧,赵文宽,贺飞,方佑龄.TiO2光催化反应及其在废水处理中的应用[J].化学进展,1998(04):349-361. |
| [11] | Gerischer H;Heller A .[J].Journal of Physical Chemistry,1991,95(13):5261. |
| [12] | Chatterjee D. .Photocatalytic reduction of hydrazine to ammonia catalysed by [Ru-III(edta)(H2O)](-) complex in a Pt/TiO2 semiconductor particulate system[J].Journal of molecular catalysis, A. Chemical,2000(1/2):1-3. |
| [13] | Varadarajan T K;Viswanathan B .[J].Journal of Photochemistry and Photobiology A:Chemistry,1996,96(1-3):187. |
| [14] | Sclafani A;Mozzanega M N;Pichat P .[J].Journal of Photochemistry and Photobiology A:Chemistry,1991,59(02):181. |
| [15] | Yamashita H;Kawasaki S;Ichihashi Y;Harada M Takeuchi M Anpo M Stewart G Fox M A Louis C Che M .[J].Journal of Physical Chemistry B,1998(102):5870. |
| [16] | Gouvea C A K;Wypych F;Moraes S G;Duran N .Peralta-Zamora P[J].Chemosphere,2000,40(04):427. |
| [17] | 胡春,刘星娟,李爽.ZnO催化剂对苯胺光降解的研究[J].环境科学学报,1998(01):81. |
| [18] | 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. |
| [19] | 井立强,郑莹光,徐自力,董凤霞,孙晓君,蔡伟民,徐英凯.ZnO超微粒子的EPR特性和光催化性能[J].高等学校化学学报,2001(11):1885-1888. |
| [20] | 尚静,徐自力,杜尧国,郭海忱.超细粉TiO2光催化氧化SO2的研究[J].高等学校化学学报,2000(08):1299-1300. |
| [21] | 井立强,孙晓君,徐自力,蔡伟民,杜尧国.ZnO超微粒子光催化氧化SO2的研究[J].催化学报,2002(01):37-40. |
| [22] | 曹锡章;张畹蕙;杜尧国.无机化学[M].北京:高等教育出版社,1991:280. |
| [23] | Pelizzetti E;Minero C .[J].Electrochimica Acta,1993,38(01):47. |
| [24] | Kohl P A;Bard A J .[J].Journal of the Electrochemical Society,1979,126(01):59. |
| [25] | Jaffrezic-Renault N;Pichat P;Foissy A;Mercier R .[J].Journal of Physical Chemistry,1986,90(12):2732. |
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