Electronic paramagnetic resonance characteristics of ZnO ultrafine particles and their photocatalytic performance
文献类型：期刊论文
| 作者 | Jing, LQ; Zheng, YG; Xu, ZL; Dong, FX; Sun, XJ; Cai, WM; Xu, YK |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2001-11-01 |
| 卷号 | 22期号:11页码:1885-1888 |
| ISSN号 | 0251-0790 |
| 关键词 | Zno Ultrafine Particle Epr Hyperfine Interaction Photocatalytic Oxidation |
| 英文摘要 | EPR properties of ZnO ultrafine particles(UFP) and their photocatalytic activities were studied by using XRD, TEM, XPS and EPR. Results show that UFP obtained by calcining the precursor, zinc carbonate hydroxide at 320, 430, 550 and 700 degreesC, have sizes of 13. 5, 19. 3, 26. 1 and 38. 5 nm, respectively, with wurtzite structure attached to the hexagonal system. Results also show that at room temperature ZnO UFP had a significant EPR signal with single line resulting from the O2- deficiencies on the surface of ZnO UFP which can capture and trap electrons so as to form a spin resources with S = 1/2. Their EPR intensity decreased with the increase of their sizes. But at the liquid nitrogen temperature, the EPR had six hyperfine structures resulting from the hyperfine interaction between the electrons traped by O2- deficiencies and the O-17 magnetic nucleus with I=5/2 attached to the absorbed oxygen on the surface of ZnO UFP. The photocatalytic activities of ZnO UFP decreased as their EPR intensity decreased during the process of photocatalytic oxidation SO2 and C7H16, suggesting that oxygen deficiencies on the surface of ZnO UFP played an important role in photocatalysis. |
| 语种 | 英语 |
| 出版者 | HIGHER EDUCATION PRESS |
| WOS记录号 | WOS:000172272100024 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/77067]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jing, LQ |
| 作者单位 | 1.Harbin Inst Technol, Dept Environm Engn Sci, Harbin 150001, Peoples R China 2.Jilin Univ, Anal Testing & Exp Ctr, Changchun 130021, Peoples R China 3.Jilin Univ, Dept Environm Sci & Engn, Changchun 130021, Peoples R China 4.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jing, LQ,Zheng, YG,Xu, ZL,et al. Electronic paramagnetic resonance characteristics of ZnO ultrafine particles and their photocatalytic performance[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2001,22(11):1885-1888. |
| APA | Jing, LQ.,Zheng, YG.,Xu, ZL.,Dong, FX.,Sun, XJ.,...&Xu, YK.(2001).Electronic paramagnetic resonance characteristics of ZnO ultrafine particles and their photocatalytic performance.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,22(11),1885-1888. |
| MLA | Jing, LQ,et al."Electronic paramagnetic resonance characteristics of ZnO ultrafine particles and their photocatalytic performance".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 22.11(2001):1885-1888. |
入库方式： OAI收割
来源：化学研究所
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