Synthesis and formation mechanism of Ag-Ni alloy nanoparticles at room temperature
Yan, S; Sun, DB; Tan, YY; Xing, XQ; Yu, HY; Wu, ZH; Xing XQ(邢雪青); Wu ZH(吴忠华)
刊名JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
2016
卷号98页码:107-114
关键词Ag-Ni alloy nanoparticle Crystal structure Formation mechanism
DOI10.1016/j.jpcs.2016.06.013
通讯作者吴忠华
文章类型期刊论文
英文摘要Ag-Ni nanoparticles were prepared with a chemical reduction method in the presence of polyvinylpyrrolidone (PVP) used as a stabilizing agent. During the synthesis of Ag-Ni nanoparticles, silver nitrate was used as the Ag+ source while nickel sulfate hexahydrate was used as Ni2+ source. Mixed solutions of Ag+ source and Ni2+ source were used as the precursors and sodium borohydride was used as the reducing agent. Five ratios of Ag+/Ni2+ (9:1, 3:1,1:1, 1:3, and 1:9) suspensions were prepared in the corresponding precursors. Ag-Ni alloy nanoparticles were obtained with this method at room temperature. Scanning electronic microscope (SEM), energy dispersive spectrum (EDS), high resolution transmission electron microscope (HRTEM) were used to characterize the morphology, composition and crystal structure of the nanoparticles. The crystal structure was also investigated with X-ray diffraction (XRD). In all five Ag/Ni ratios, two kinds of particle structures were observed that are single crystal structure and five-fold twinned structure respectively. Free energy of nanoparticles with different crystal structures were calculated at each Ag/Ni ratio. Calculated results revealed that, with identical volume, free energy of single crystal particle is lower than multi-twinned particle and the difference becomes smaller with the increase of particle size; increase of Ni content will lead the increase of free energy for both structures. Formation of different crystal structures are decided by the structure of the original nuclei at the very early stage of the reduction process. (C) 2016 Elsevier Ltd. All rights reserved.
类目[WOS]Chemistry, Multidisciplinary ; Physics, Condensed Matter
关键词[WOS]SILVER NANOPARTICLES ; COHESIVE ENERGY ; MICROSTRUCTURE ; NANOCRYSTALS ; GROWTH ; FILMS ; SIZE
语种英语
WOS记录号WOS:000383297100015
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260245
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Yan, S,Sun, DB,Tan, YY,et al. Synthesis and formation mechanism of Ag-Ni alloy nanoparticles at room temperature[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2016,98:107-114.
APA Yan, S.,Sun, DB.,Tan, YY.,Xing, XQ.,Yu, HY.,...&吴忠华.(2016).Synthesis and formation mechanism of Ag-Ni alloy nanoparticles at room temperature.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,98,107-114.
MLA Yan, S,et al."Synthesis and formation mechanism of Ag-Ni alloy nanoparticles at room temperature".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 98(2016):107-114.
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