不同晶相Cu_2GeS_3纳米晶的可控合成
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- 英文论文题名：Phase-Controlled Synthesis of Cu_2GeS_3 Nanocrystals
- 论文作者：吴义辉 ; 杨驰 ; 周斌 ; 张文华
- 英文论文作者：Yihui Wu ; Chi Yang ; Bin Zhou ; Wen-Hua Zhang ; Sichuan Research Center of New Materials ; Institute of Chemical Materials ; China Academy of Engineering Physics
- 年：2016
- 作者机构：中物院化工材料研究所四川省新材料研究中心;
- 论文关键词：胶体化学 ; 纳米颗粒 ; 油胺-硫
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：176k
- 原文格式：D
- 会议级别：全国
摘要
油胺-硫(OLA-S)是一种廉价、易得的硫源,广泛应用于胶体纳米晶的制备中~[1-3]。然而其制备条件却一直未受到关注。本文中,我们系统地考察了OLA-S的配制温度,发现以不同温度下制备的OLA-S作为硫源可以得到不同晶相的Cu_2Ge S_3纳米晶。结果表明,不同晶相纳米晶的形成主要是因为不同温度下制备的OLA-S具有不同的活性物种:较低活性(<80 oC下配制)将导致立方相Cu_2GeS_3的形成,而较高的活性(200oC下配制)将促使亚稳的六方相Cu_2Ge S_3的形成。
Oleylamine-sulfur(OLA-S), a cost-effective and available sulfur source, have been widely adopted in synthesis of colloidal nanocrystals(NCs). Attentions, however, have yet been given on the preparation of OLA-S. In this contribution, we present a systematically study on the preparation temperatures of OLA-S. The results indicated that different crystal phase of Cu_2 Ge S_3 NCs will be achieved via changing the preparation conditions of OLA-S, which is due to the different activities of OLA-S: low activity(prepared at <80 oC) will leads to the formation of cubic Cu_2 GeS_3, and high activity(prepared at 200 oC) will results in the formation of hexagonal Cu_2 Ge S_3.
Oleylamine-sulfur(OLA-S), a cost-effective and available sulfur source, have been widely adopted in synthesis of colloidal nanocrystals(NCs). Attentions, however, have yet been given on the preparation of OLA-S. In this contribution, we present a systematically study on the preparation temperatures of OLA-S. The results indicated that different crystal phase of Cu_2 Ge S_3 NCs will be achieved via changing the preparation conditions of OLA-S, which is due to the different activities of OLA-S: low activity(prepared at <80 oC) will leads to the formation of cubic Cu_2 GeS_3, and high activity(prepared at 200 oC) will results in the formation of hexagonal Cu_2 Ge S_3.
引文
[1]Mourdikoudis,S.;Liz-Marzán,L.M.Chem.Mater.2013,25:1465.
[2]Yang,C.;Zhou,B.;Miao,S.;Yang,C.;Cai,B.;Zhang,W.-H.;Xu,X.J.Am.Chem.Soc.2013,135:5958.
[3]Wu,Y.;Zhou,B.;Li,M.;Yang,C.;Zhang,W.-H.;Li,C.Chem.Commun.2014,50:12738.
[2]Yang,C.;Zhou,B.;Miao,S.;Yang,C.;Cai,B.;Zhang,W.-H.;Xu,X.J.Am.Chem.Soc.2013,135:5958.
[3]Wu,Y.;Zhou,B.;Li,M.;Yang,C.;Zhang,W.-H.;Li,C.Chem.Commun.2014,50:12738.