溶剂诱导孪晶和单晶金纳米颗粒的相互转换及其在醇氧化中的应用
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- 英文论文题名：Reversible Solvent-Driven Multiply-Twinned to Single-Crystal Gold Nanoparticles Transformation Applies to the Alcohol Selective Oxidation
- 论文作者：周宇恒 ; 范杰
- 英文论文作者：Yuheng Zhou ; J.Fan ; Department of Chemistry ; University of Zhejiang
- 年：2016
- 作者机构：浙江大学;
- 论文关键词：孪晶 ; 单晶 ; 溶剂诱导 ; 苯甲醇 ; 选择性氧化
- 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-第三十七分会：纳米催化
- 语种：中文
- 分类号：TB383.1;O621.25
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 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：190k
- 原文格式：D
- 会议级别：全国
摘要
孪晶纳米颗粒存在着高指数的孪晶轴~([1]),以及大量的表面缺陷~([2]),这使得孪晶颗粒与单晶相比有着很大的不同。然而由于方法和技术的限制,使得人们对孪晶的催化作用机理无法更深入进行。在我们近期的研究中,通过一种溶剂诱导的孪晶与单晶纳米颗粒之间的相互转化,使得通过后处理的方法来调控纳米颗粒形貌成为可能。并利用这种方法,研究了两种不同金纳米颗粒在苯甲醇气相选择性氧化反应中的活性差别。同时利用原位TEM,固体核磁和理论计算等一系列手段,对反应的机理进行了初步探讨,阐释了两种不同的纳米颗粒对气相醇氧化的影响的原因。
Multiply-twinned gold nanoparticles have attracted great fundamental research interests due to their diverse structures and fascinating catalytic properties. In our present work, a solvent-driven method which was observed by the in-situ TEM had been used for the reversible multiply-twinned to single-crystal gold nanoparticles Transformation. This method was used to study the different catalyst activity and further investigate the mechanism of multiply-twinned and single-crystal gold nanoparticles in the selective oxidation of benzyl alcohol.
Multiply-twinned gold nanoparticles have attracted great fundamental research interests due to their diverse structures and fascinating catalytic properties. In our present work, a solvent-driven method which was observed by the in-situ TEM had been used for the reversible multiply-twinned to single-crystal gold nanoparticles Transformation. This method was used to study the different catalyst activity and further investigate the mechanism of multiply-twinned and single-crystal gold nanoparticles in the selective oxidation of benzyl alcohol.
引文
[1]J.Wu,L.Qi,H.You,A.Gross,J.Li and H.Yang,J.Am.Chem.Soc,2012,134,11880-11883
[2]Z.C.Canbek,R.Cortes-Huerto,F.Testard,O.Spalla,and S.Moldovan,Cryst.Growth Des,2015,15,3637-3644.
[2]Z.C.Canbek,R.Cortes-Huerto,F.Testard,O.Spalla,and S.Moldovan,Cryst.Growth Des,2015,15,3637-3644.