采用氨水沉淀法、多元醇介质法和微乳法3种方法制备Bi2O3纳米粒子,运用BET、XRD、XPS、UV-VIS等手段对其进行表征,并以挥发性有机物苯、甲苯、二甲苯为模拟污染物,分别研究了纳米Bi2O3微粒的光催化降解性能.实验结果表明,用3种方法制备并经750℃焙烧的Bi2O3纳米粒子的粒径分别为50.6 nm、38.5 nm、31.5 nm;所制得的Bi2O3纳米粒子对"三苯"类污染物均有光催化活性,其强弱顺序为微乳法＞多元醇介质法＞氨水沉淀法;而3种污染物的降解速度顺序为二甲苯＞甲苯＞苯.
参考文献
| [1] | 戴智铭,朱中南,古宏晨.半导体气固相光催化氧化反应介绍[J].化学反应工程与工艺,2000(02):185. |
| [2] | 严东生 .纳米材料的合成和制备[J].无机材料学报,1995,10(01):1-6. |
| [3] | PELLIZZETTI E;MINERO C;MAURINO V .The role of colloid particles in the photodegradation of organic compounds of environmental concern in aquatic syste[J].Advances In Colloid and Interface Science,1990,32(2-3):271-316. |
| [4] | HAGFELDT A;GRATZEL M .Light-induced rodox reaction in nanocrystalline systems[J].Chemical Reviews,1995,95(01):49-68. |
| [5] | Amy L. Linsebigler;Guangquan Lu;John T. Yates Jr. .Photocatalysis on TiO_2 Surfaces: Principles, Mechanisms, and Selected Results[J].Chemical Reviews,1995(3):735-758. |
| [6] | KENNETH L HARDEE;ALLEN J et al.Photoel ectrochemieal behavior of several polycrystalline metal oxide electrodes in aqueous solutions[J].J Electrochem Soc:Electrochemical Sciene and Technology,1977,124(02):215-224. |
| [7] | ANTHONY HARRIMAN;JOHN M THOMAS;WUZONG ZHOU.A New family of photocatalysts based on Bi2O3[J].Journal of Solid State Chemistry,1998(72):126-130. |
| [8] | 崔玉民,徐立杰,朱亦仁.用光催化剂Bi2O3处理含亚硝酸盐废水的研究[J].工业水处理,2000(08):17-19. |
| [9] | 王俊珍,付希贤,杨秋华,白树林,孙艺环.Bi2O3对染料的光催化降解性能[J].应用化学,2002(05):483-485. |
| [10] | 田地,张彭义,余刚.挥发性有机物光催化降解研究进展[J].上海环境科学,2000(04):162-166. |
| [11] | RAFAEL M R;NELSON C M.Relationship between the of surface species and catalyst deactivation during the gas-phase photocatalytic oxidation of toluene[J].Catalysis Today,1998(40):353. |
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%