Distribution of gallium nanocrystals in Ga/MCM-41 mesocomposites by continuous-flow hyperpolarized Xe-129 NMR spectroscopy
文献类型：期刊论文
| 作者 | Zhang, WP; Ratcliffe, CI; Moudrakovski, IL; Mou, CY; Ripmeester, JA |
| 刊名 | analytical chemistry
 |
| 出版日期 | 2005-05-15 |
| 卷号 | 77期号:10页码:3379-3382 |
| 英文摘要 | the distribution of gallium nanocrystals in mesoporous mcm-41 host were analyzed by continuous-flow hyperpolarized xe-129 nmr spectroscopy. in contrast to unclear tem images for the high metal contents, laser-polarized xe-129 probe can detect the whole distribution of gallium in the mcm-41 host. it is found that gallium nanocrystals are included in the mesochannels of mcm-41; a part of them also remains in the interparticle voids. the distribution of gallium metal in mcm-41 is heterogeneous. not all the mesochannels host metallic gallium even at a high gallium loading of 65.1 wt %. variable temperature measurements can provide information on the xenon adsorption parameters. this approach opens a sensitive way to probe the distribution of high content species in porous host materials. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | chemical-shift ; xenon ; surface ; nanowires ; silicas ; sba-15 ; sites ; pores ; probe |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000229206800044 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139790]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 3.Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan 4.Natl Taiwan Univ, Ctr Condensed Matter Res, Taipei 10764, Taiwan |
| 推荐引用方式 GB/T 7714 | Zhang, WP,Ratcliffe, CI,Moudrakovski, IL,et al. Distribution of gallium nanocrystals in Ga/MCM-41 mesocomposites by continuous-flow hyperpolarized Xe-129 NMR spectroscopy[J]. analytical chemistry,2005,77(10):3379-3382. |
| APA | Zhang, WP,Ratcliffe, CI,Moudrakovski, IL,Mou, CY,&Ripmeester, JA.(2005).Distribution of gallium nanocrystals in Ga/MCM-41 mesocomposites by continuous-flow hyperpolarized Xe-129 NMR spectroscopy.analytical chemistry,77(10),3379-3382. |
| MLA | Zhang, WP,et al."Distribution of gallium nanocrystals in Ga/MCM-41 mesocomposites by continuous-flow hyperpolarized Xe-129 NMR spectroscopy".analytical chemistry 77.10(2005):3379-3382. |
入库方式： OAI收割
来源：大连化学物理研究所
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