ICCAS OpenIR
Low-temperature synthesis of superparamagnetic nanocomposite particles composed of platinum and maghemite
Zhang, Junling1; Ji, Hua1,2; Wei, Yongge1,3; Wang, Yuan1; Wu, Nianzu1
2008-07-24
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume112Issue:29Pages:10688-10691
AbstractSuperparamagnetic 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.
DOI10.1021/jp8020694
Indexed BySCI
Language英语
WOS IDWOS:000257724100016
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/63372
Collection中国科学院化学研究所
Corresponding AuthorZhang, Junling
Affiliation1.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
Recommended Citation
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.
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