DICP OpenIR
Subject Area物理化学
Iodine Ions Mediated Formation of Monomorphic Single-Crystalline Platinum Nanoflowers
Yin, Jie1,3; Wang, Junhu1,2; Li, Mingrun1; Jin, Changzi1; Zhang, Tao1,2; Wang JH(王军虎); Zhang T(张涛)
KeywordPt Nanoflower Iodine Ions Mediated Polyol Process X-ray Absorption Spectroscopy Uv-vis Spectroscopy Pt-i Complex
Source PublicationCHEMISTRY OF MATERIALS
2012-07-24
DOI10.1021/cm300056h
Volume24Issue:14Pages:2645-2654
Indexed BySCI
SubtypeArticle
Department15
Funding Project1501
Contribution Rank1,1
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
WOS KeywordSHAPE-CONTROLLED SYNTHESIS ; SILVER NANOPARTICLES ; FACILE SYNTHESIS ; METAL NANOCRYSTALS ; AQUEOUS-SOLUTIONS ; POLYOL SYNTHESIS ; HALIDE-IONS ; NANOSTRUCTURES ; MORPHOLOGY ; REDUCTION
AbstractWell-defined and strikingly monomorphic single-crystalline Pt nanoflowers were successfully synthesized through the addition of a large amount of iodine ions into polyol process (5 mM H2PtCl6, 30 mM KI, and 50 mM PVP in ethylene glycol solution at 160 degrees C). The detailed structures of the Pt nanoflowers were studied with high-resolution TEM, indicating that high-quality production of the Pt nanoflowers could be obtained when the KI concentration was increased to six times of H2PtCl6. The size of Pt nanoflowers could be tuned by changing the concentration of H2PtCl6 with the constant Pt/I ratio (1:6). The formation process of the nanoflowers was investigated by the UV-vis and EXAFS spectroscopic studies, demonstrating that the iodine ions played a key role in inducing the formation of the single-crystalline Pt nanoflowers. After the addition of iodine ions into the polyol synthesis, the Pt-I complex was formed and reduced by different kinetics compared with that of H2PtCl6 to induce the overgrowth of Pt nanocrystals. Additionally, a small portion of iodine element was found to be strongly adsorbed on the surfaces of Pt nanoflowers, which probably also favored the anisotropic overgrowth of Pt nanocrystals resulting in the single-crystalline Pt nanoflowers. A comprehensive set of systematic studies on the synthesis factors (the concentrations of Pt precursor, iodine ions and PVP, reaction temperature, different kinds of Pt precursors and reaction atmosphere) was also reported.
Language英语
WOS IDWOS:000306674200005
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/118083
Collection中国科学院大连化学物理研究所
Corresponding AuthorWang JH(王军虎); Zhang T(张涛)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yin, Jie,Wang, Junhu,Li, Mingrun,et al. Iodine Ions Mediated Formation of Monomorphic Single-Crystalline Platinum Nanoflowers[J]. CHEMISTRY OF MATERIALS,2012,24(14):2645-2654.
APA Yin, Jie.,Wang, Junhu.,Li, Mingrun.,Jin, Changzi.,Zhang, Tao.,...&张涛.(2012).Iodine Ions Mediated Formation of Monomorphic Single-Crystalline Platinum Nanoflowers.CHEMISTRY OF MATERIALS,24(14),2645-2654.
MLA Yin, Jie,et al."Iodine Ions Mediated Formation of Monomorphic Single-Crystalline Platinum Nanoflowers".CHEMISTRY OF MATERIALS 24.14(2012):2645-2654.
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