Recent Developments in Shape-Controlled Synthesis of Silver Nanocrystals.
Recent Developments in Shape-Controlled Synthesis of Silver Nanocrystals.
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DOI：
10.1021/jp306063p
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发表时间：
2012
影响因子：
3.7
通讯作者：
Xia, Younan
中科院分区：
文献类型：
--
作者：
Xia, Xiaohu;Zeng, Jie;Zhang, Qiang;Moran, Christine H.;Xia, Younan
这篇专题文章介绍了我们最近在理解柠檬酸盐和聚乙烯基吡罗烷酮（PVP）作为封盖剂在种子介导合成具有控制形状的银纳米晶体中的作用方面的工作。我们已经证明，柠檬酸盐和PVP分别选择性地结合Ag（111）和Ag（100）表面，从而有利于形成优先被{111}或{100}面包裹的Ag纳米晶体。此外，我们还量化了PVP吸附在银纳米立方体表面的覆盖密度。在机理理解的基础上，通过种子和封盖剂的不同组合，成功地合成了一系列形状和大小可控的银纳米晶体：在立方和八面体中添加柠檬酸盐的单晶球形/立方种子，或在立方体和条形体中添加PVP的单晶球形/立方种子；和板状种子与柠檬酸盐扩大薄板或与PVP加厚板。
This feature article introduces our recent work on understanding the roles played by citrate and poly(vinyl pyrrolidone) (PVP) as capping agents in seed-mediated syntheses of Ag nanocrystals with controlled shapes. We have demonstrated that citrate and PVP selectively bind to Ag(111) and Ag(100) surfaces, respectively, and thus favor the formation of Ag nanocrystals enclosed preferentially by {111} or {100} facets. In addition, we have quantified the coverage density of PVP adsorbed on the surface of Ag nanocubes. Based on the mechanistic understanding, a series of Ag nanocrystals with controlled shapes and sizes have been successfully synthesized by using different combinations of seeds and capping agents: single-crystal spherical/cubic seeds with citrate for cuboctahedrons and octahedrons or with PVP for cubes and bars; and plate-like seeds with citrate for enlarged thin plates or with PVP for thickened plates.
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影响因子：
3
作者：
Cobley, Claire M.;Skrabalak, Sara E.;Xia, Younan
通讯作者：
Xia, Younan
影响因子：
10.8
作者：
Al-Saidi, W. A.;Feng, Haijun;Fichthorn, Kristen A.
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作者：
Bastys, V;Pastoriza-Santos, I;Liz-Marz치n, LM
通讯作者：
Liz-Marz치n, LM