| 纳米SiO2／TiO2光催化降解空气中甲醛的研究 |
| |
| 引用本文： | 陈锦芳,唐松超,林锦美. 纳米SiO2／TiO2光催化降解空气中甲醛的研究[J]. 广州化工, 2011, 39(2): 53-56 |
| |
| 作者姓名： | 陈锦芳 唐松超 林锦美 |
| |
| 作者单位： | 1. 集美大学生物工程学院,福建厦门361021;集美大学环境工程研究所,福建厦门361021
2. 集美大学生物工程学院,福建厦门,361021 |
| |
| 基金项目： | 集美大学预研基金资助项目(C60618) |
| |
| 摘 要： | 采用共沉淀方法制备了Si共掺杂的SiO2／TiO2光催化复合粉末，将其负载于活性炭（ACF）上。在流动化床中，考察了煅烧温度、煅烧时间、Si掺杂量、负载次数、光照条件以及甲醛初始浓度对该复合剂光催化降解甲醛效率的影响。结果发现当Si：Ti：1：4、SiO2／TiO2复合催化剂煅烧时间4h、煅烧温度400℃，ACF上负载1次，18w紫外光照射时，甲醛的降解效果最佳，对初始浓度小于0．4mg／L的甲醛气体，降解率可达90％左右。
|
| 关 键 词： | TiO2 光催化 甲醛 |
Study on Photocatalytic Degradation of Formaldehyde Using Nano-meter SiO2/TiO2 Composite Catalyst |
| |
| CHEN Jin-fang,TAN Song-chao,LIN Jin-mei. Study on Photocatalytic Degradation of Formaldehyde Using Nano-meter SiO2/TiO2 Composite Catalyst[J]. GuangZhou Chemical Industry and Technology, 2011, 39(2): 53-56 |
| |
| Authors: | CHEN Jin-fang TAN Song-chao LIN Jin-mei |
| |
| Affiliation: | CHEN Jin-fang1,2,TAN Song-chao1,LIN Jin-mei1,2(1 College of Bioengineering,Jimei University,Fujian Xiamen 361021,2 Institute of Environmental Engineering,China) |
| |
| Abstract: | SiO2/TiO2 composite catalyst was prepared by co-precipitation method,and loaded on activated carbon fiber (ACF). Using this nanometer composite catalyst and in a continuous-flow reactor,the effects of amount SiO2-doped,calcinate time and temperature,coating cycles,light condition and initial concentration of formaldehyde on photocatalytic degradation were investigated. The result showed that the performance of SiO2/TiO2 composite catalyst was best,when Si:Ti=1:4 (mole ratio) and calcined at 400 ℃ for 4 h,coating one film,UV irradiation with power 18 W,and the degradation percentage of formaldehyde was about 90 when the initial concentration of formaldehyde was less than 0.4mg/L. |
| |
| Keywords: | TiO2 photocatalysis formaldehyde. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
