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In situ SAXS study on size changes of platinum nanoparticles with temperature
Wang W(王维); Chen X(陈曦); Cai Q(蔡泉); Mo G(默广); Jiang LS(江隆盛); Zhang K(张凯); Chen ZJ(陈中军); Wu ZH(吴忠华); Wang, W; Chen, X; Cai, Q; Mo, G; Jiang, LS; Zhang, K; Chen, ZJ; Wu, ZH; Pan, W
Corresponding AuthorWang, W (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China.
AbstractPoly(vinylpyrrolidone) (PVP)-coated platinum (Pt) nanoparticles were prepared in methanol-water reduction method. In situ small-angle X-ray scattering (SAXS) and X-ray diffraction (XRD) techniques were used to probe the size change of particles and crystallites with temperature. Tangent-by-tangent (TBT) method of SAXS data analysis was improved and used to get the particle size distribution (PSD) from SAXS intensity. Scherrer's equation was used to derive the crystallite size from XRD pattern. Combining SAXS and XRD results, a step-like characteristic of the Pt nanoparticle growth has been found. Three stages (diffusion, aggregation, and agglomeration) can be used to describe the growth of the Pt nanoparticles and nanocrystallites. Aggregation was found to be the main growth mode of the Pt nanoparticles during heating. The maximum growth rates of Pt nanoparticles and Pt nanocrystallites, as well as the maximum aggregation degree of Pt nanocrystallites were found, respectively, at 250 degrees C, 350 degrees C and 300 degrees C. These results are helpful to understanding the growth mode of nanoparticles, as well as controlling the nanoparticle size.
Subject AreaPhysics
Indexed BySCI ; ADS
WOS SubjectPhysics, Condensed Matter
WOS IDWOS:000259580400007
ADS Bibcode2008EPJB...65...57W
ADS URLhttps://ui.adsabs.harvard.edu/abs/2008EPJB...65...57W
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2008EPJB...65...57W/citations
Citation statistics
Cited Times:13 [ADS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Wang W,Chen X,Cai Q,et al. In situ SAXS study on size changes of platinum nanoparticles with temperature[J]. EUROPEAN PHYSICAL JOURNAL B,2008,65(1):#REF!.
APA 王维.,陈曦.,蔡泉.,默广.,江隆盛.,...&Pan, W.(2008).In situ SAXS study on size changes of platinum nanoparticles with temperature.EUROPEAN PHYSICAL JOURNAL B,65(1),#REF!.
MLA 王维,et al."In situ SAXS study on size changes of platinum nanoparticles with temperature".EUROPEAN PHYSICAL JOURNAL B 65.1(2008):#REF!.
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