Time-Resolved Small-Angle X-ray Scattering Study on the Growth Behavior of Silver Nanoparticles

	Time-Resolved Small-Angle X-ray Scattering Study on the Growth Behavior of Silver Nanoparticles
	Yan, S; 吴忠华;Wu, ZH; Yu, HY; Gong, Y; Tan, YY; Du, R; Chen, W; Xing, XQ; Mo, G; Chen, ZJ
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2014
卷号	118 期号:21 页码:11454-11463
英文摘要	Silver nanoparticles were prepared with a chemical reduction method in the presence of polyvinylpyrrolidone (PVP) used as a stabilizing agent. During the synthesis of Ag nanoparticles, aqueous silver nitrate solutions were used as the precursors and sodium borohydride was used as the reducing agent. Four Ag-nanoparticle suspensions were prepared with the initial Ag+ concentrations of 2, 4, 6, and 8 mM in the corresponding precursors. The in-situ time-resolved small-angle X-ray-scattering (SAXS) technique was used to monitor the nucleation and growth processes of Ag nanoparticles. The particle-size change with time was obtained by analyzing the SAXS data with a tangent-by-tangent method. The SAXS results demonstrate that the Ag nanoparticle growth behaves as a linear relation in the initial growth stage (<1 s), which was used to evaluate the critical particle size. The growth of Ag nanoparticles experienced a fast stage and then a slow stage in their whole formation process. A diffusion-coalescence model has been proposed to describe the growth behavior. The particle size change with growth time can be fitted well by this model. The effect of initial Ag+ concentration on the final particle size and the growth mechanism of Ag nanoparticles are discussed in this paper.
学科主题	Chemistry; Science & Technology - Other Topics; Materials Science
收录类别	SCI
WOS记录号	WOS:000336771700035
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225143]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Yan, S,吴忠华；Wu, ZH,Yu, HY,et al. Time-Resolved Small-Angle X-ray Scattering Study on the Growth Behavior of Silver Nanoparticles[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(21):11454-11463.
APA	Yan, S.,吴忠华；Wu, ZH.,Yu, HY.,Gong, Y.,Tan, YY.,...&蔡泉.(2014).Time-Resolved Small-Angle X-ray Scattering Study on the Growth Behavior of Silver Nanoparticles.JOURNAL OF PHYSICAL CHEMISTRY C,118(21),11454-11463.
MLA	Yan, S,et al."Time-Resolved Small-Angle X-ray Scattering Study on the Growth Behavior of Silver Nanoparticles".JOURNAL OF PHYSICAL CHEMISTRY C 118.21(2014):11454-11463.