Au_(102)(SPh)_(44)原子簇的合成和催化应用
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- 英文论文题名：The Synthesis of Au_(102)(SPh)_(44) Cluster and Catalytic Application
- 论文作者：王锦 ; 李志敏 ; 李杲
- 英文论文作者：Jin Wang ; Zhimin Li ; Gao Li ; Dalian Institute of Chemical Physics ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院大连化学物理研究所;
- 论文关键词：金原子簇 ; Au_(102)(SPh)_(44) ; 选择性氧化 ; 硫醚 ; 亚砜
- 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：O643.36
- 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：253k
- 原文格式：D
- 会议级别：全国
摘要
近些年来,金原子簇在纳米科学领域是一种新奇的物质之一,并有广阔的研究方向~([1])。我们探索利用动态控制合成方法制备出Au_(102)(SPh)_(44)原子簇,利用溶剂萃取法和尺寸排阻色谱法使Au_(102)(SPh)_(44)原子簇从多分散的金纳米簇分离出来~([2])。Au_(102)(SPh)_(44)原子簇由激光解析电离质谱法(MADLI)、电喷雾离子质谱法(ESI)、紫外-可见分光光度法和热重分析(TGA)等方法确定。TiO_2负载的Au_(102)(SPh)_(44)原子簇催化剂可以选择性氧化硫醚化合物成亚砜(PhIO为氧化剂),该催化剂表现非常高的活性(80-99%的硫醚转化率以及96-99%亚砜的选择性)。
In recent years,research on atomically precise metal nanoclusters has become one of the new,exciting directions in the nanoscience field.We explore a kinetically controlled synthetic protocol for preparing solvent-solvable Au_(102)(SPh)_(44) nanoclusters which are isolated from the polydispersed gold nanoclusters using solvent extraction and size exclusion chromatography(SEC) methods.The as-obtained Au_(102)(SPh)_(44) nanoclusters is fully determined by matrix-assisted laser desorption ionization(MADLI) and electrospray ionization(ESI) mass spectrometry,in conjunction with UV-vis spectroscopy and thermogravimetric analysis(TGA).Further,the TiO_2-supported Au_(102)(SPh)_(44) nanocluster catalyst is investigated in the selective oxidation of sulfides into sulfoxides uisng PhIO as the oxidant.The catalyst gives rise to excellent catalytic performance(80-99% conversion of sulfides with 96-99% selectivity for sulfoxide products).
In recent years,research on atomically precise metal nanoclusters has become one of the new,exciting directions in the nanoscience field.We explore a kinetically controlled synthetic protocol for preparing solvent-solvable Au_(102)(SPh)_(44) nanoclusters which are isolated from the polydispersed gold nanoclusters using solvent extraction and size exclusion chromatography(SEC) methods.The as-obtained Au_(102)(SPh)_(44) nanoclusters is fully determined by matrix-assisted laser desorption ionization(MADLI) and electrospray ionization(ESI) mass spectrometry,in conjunction with UV-vis spectroscopy and thermogravimetric analysis(TGA).Further,the TiO_2-supported Au_(102)(SPh)_(44) nanocluster catalyst is investigated in the selective oxidation of sulfides into sulfoxides uisng PhIO as the oxidant.The catalyst gives rise to excellent catalytic performance(80-99% conversion of sulfides with 96-99% selectivity for sulfoxide products).
引文
[1]G,Li.;R,Jin.Acc.Chem.Res.2013,46:1749.
[2]Y,Chen.;J,Wang.;C,Liu.;Z,Li.;G,Li.Nanoscale.2016,DOI:10.1039/C5NR08338A.
[2]Y,Chen.;J,Wang.;C,Liu.;Z,Li.;G,Li.Nanoscale.2016,DOI:10.1039/C5NR08338A.