Low-temperature synthesis of superparamagnetic nanocomposite particles composed of platinum and maghemite
文献类型：期刊论文
| 作者 | Zhang, Junling1; Ji, Hua1,2; Wei, Yongge1,3; Wang, Yuan1; Wu, Nianzu1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2008-07-24 |
| 卷号 | 112期号:29页码:10688-10691 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/jp8020694 |
| 英文摘要 | Superparamagnetic nanocomposite particles composed of maghemite nanocrystal (ca.15 nm) and deposited Pt nanoclusters (ca. 2.5 nm) were synthesized by a low temperature catalytic method. The magnetic properties of iron oxides species can be easily tuned with different redox atmosphere in the presence of Pt nanoclusters. In this convenient preparation, Pt nanoclusters were first captured on Fe(OH)(3) nanoparticles by electrostatic interaction. Then at 80 'C the Fe(OH)(3) nanoparticles was catalytically reduced with glycol acid to Fe2O3 nanophase which were finally catalytically oxidized to maghemite (gamma-Fe2O3) nanophase in the air at 80 degrees C. The as-synthesized Pt/Fe2O3 and Pt/gamma-Fe2O3 nanocomposites were well characterized by chemical analysis, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, and magnetization measurements. Reversible and efficient transformation between the Pt/Fe2O3 and Pt/gamma-Fe2O3 nanocomposites was realized at 80 degrees C. The Pt/gamma-Fe2O3 nanocomposite particles modified with oleic acid were easily dispersed in nonpolar solvents such as hexane, resulting in stable ferrofluids. |
| 语种 | 英语 |
| WOS记录号 | WOS:000257724100016 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/63371]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Junling |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China 2.Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA 3.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Junling,Ji, Hua,Wei, Yongge,et al. Low-temperature synthesis of superparamagnetic nanocomposite particles composed of platinum and maghemite[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(29):10688-10691. |
| APA | Zhang, Junling,Ji, Hua,Wei, Yongge,Wang, Yuan,&Wu, Nianzu.(2008).Low-temperature synthesis of superparamagnetic nanocomposite particles composed of platinum and maghemite.JOURNAL OF PHYSICAL CHEMISTRY C,112(29),10688-10691. |
| MLA | Zhang, Junling,et al."Low-temperature synthesis of superparamagnetic nanocomposite particles composed of platinum and maghemite".JOURNAL OF PHYSICAL CHEMISTRY C 112.29(2008):10688-10691. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。