Shape Controllable Synthesis of Silver Particles by Selecting the Crystallization Routes

IF 2.6 4区 材料科学 Q3 ENGINEERING, CHEMICAL
Jianmei Liu, Q. Lin, Yu Zhou, J. Dai, Yongsheng Han
{"title":"Shape Controllable Synthesis of Silver Particles by Selecting the Crystallization Routes","authors":"Jianmei Liu, Q. Lin, Yu Zhou, J. Dai, Yongsheng Han","doi":"10.14356/KONA.2020004","DOIUrl":null,"url":null,"abstract":"Classic crystallization describes a burst nucleation followed by a layer-by-layer atom deposition. The non-classic crystallization refers to particle mediated crystallization process. Different crystallization routes lead to the formation of diverse structured materials. Here we report a rational synthesis of silver particles by selecting the crystallization routes. Silver particles were synthesized by a solution reduction approach. The crystallization routes were regulated by adding amino acids to stabilize silver ions which leads to the decrease of the reduction rate. Without amino acids, silver dendrites were largely formed. With the addition of amino acids, flower-like (low concentration of amino acids) and spherical silver (high concentration of amino acid) particles were synthesized. Three kinds of amino acids were tested and the similar results were obtained. The time-dependent characterization on the evolution of silver particles showed that silver dendrites were formed by the classic atom deposition while the other two morphologies were formed by the combination of classic and non-classic crystallization. The silver particles synthesized were evaluated for ethylene epoxidation and the dendritic particles demonstrated a high selectivity.","PeriodicalId":17828,"journal":{"name":"KONA Powder and Particle Journal","volume":"76 1","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2020-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"KONA Powder and Particle Journal","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.14356/KONA.2020004","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 6

Abstract

Classic crystallization describes a burst nucleation followed by a layer-by-layer atom deposition. The non-classic crystallization refers to particle mediated crystallization process. Different crystallization routes lead to the formation of diverse structured materials. Here we report a rational synthesis of silver particles by selecting the crystallization routes. Silver particles were synthesized by a solution reduction approach. The crystallization routes were regulated by adding amino acids to stabilize silver ions which leads to the decrease of the reduction rate. Without amino acids, silver dendrites were largely formed. With the addition of amino acids, flower-like (low concentration of amino acids) and spherical silver (high concentration of amino acid) particles were synthesized. Three kinds of amino acids were tested and the similar results were obtained. The time-dependent characterization on the evolution of silver particles showed that silver dendrites were formed by the classic atom deposition while the other two morphologies were formed by the combination of classic and non-classic crystallization. The silver particles synthesized were evaluated for ethylene epoxidation and the dendritic particles demonstrated a high selectivity.
选择结晶路线合成形状可控的银颗粒
经典结晶描述的是一个爆发成核,接着是一层接一层的原子沉积。非经典结晶是指粒子介导的结晶过程。不同的结晶路径导致不同结构材料的形成。本文报道了一种通过选择结晶路线来合理合成银粒子的方法。采用溶液还原法制备了银颗粒。通过加入氨基酸来稳定银离子,调节结晶路线,使还原速率降低。没有氨基酸,银树突就基本形成了。通过氨基酸的添加,合成了花状(低浓度的氨基酸)和球形银状(高浓度的氨基酸)颗粒。对三种氨基酸进行了测试,得到了相似的结果。对银粒子演化的时间依赖性表征表明,银枝晶是由经典原子沉积形成的,而另外两种形态是由经典结晶和非经典结晶结合形成的。对合成的银粒子进行了乙烯环氧化反应评价,结果表明银粒子具有较高的选择性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
KONA Powder and Particle Journal
KONA Powder and Particle Journal 工程技术-材料科学:综合
CiteScore
8.40
自引率
4.90%
发文量
35
审稿时长
>12 weeks
期刊介绍: KONA publishes papers in the broad field of powder science and technology, ranging from fundamental principles to practical applications. Papers describing technological experience and critical reviews of existing knowledge in special areas are also welcome.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信