DICP OpenIR
One-phase controlled synthesis of Au-25 nanospheres and nanorods from 1.3 nm Au : PPh3 nanoparticles: the ligand effects
Lin, Jizhi1,2,3; Li, Weili4; Liu, Chao1,2; Huang, Pan1,2; Zhu, Manzhou3; Ge, Qingjie4; Li, Gao1,2
刊名NANOSCALE
2015
DOI10.1039/c5nr02638e
7期:32页:13663-13670
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]CRYSTAL-STRUCTURE ; GOLD NANOCLUSTER ; CO OXIDATION ; OPTICAL-PROPERTIES ; GROWTH-MECHANISM ; CLUSTERS ; AU-25(SCH2CH2PH)(18) ; CONVERSION ; CATALYSTS
英文摘要We report the controlled synthesis of [Au-25(PPh3)(10)(SR1)(5)X-2](2+) nanorods (H-SR1: alkyl thiol, H-SC2H4Ph and H-S(n-C6H13)) and Au-25(SR2)(18) nanospheres (H-SR2: aromatic thiol, H-SPh and H-SNap) under the one-phase thiol etching reaction of the polydisperse Au-n(PPh3)(m) parent-particles (core diameter: 1.3 +/- 0.4 nm, 20 < n < 50). These as-obtained gold nanoclusters are identified by UV-vis spectroscopy and matrix-assisted laser desorption ionization mass spectrometry. Furthermore, the conversion process, from Au-n(PPh3)(m) nanoparticles to Au-25(SNap)(18) nanospheres, is monitored by UV-vis spectroscopy. It is observed that the Au-25(PPh3)(10)(SR1)(5)X-2 nanorods cannot convert to Au-25(SR)(18) nanospheres in the presence of excess thiol (both the alkyl and aromatic thiol) even under thermal conditions (e.g., 55 and 80 degrees C), indicating that both the Au-25 nanorods and nanospheres are in a stable state during the alkyl and aromatic thiol etching reactions, respectively. The two different conversion pathways (i.e., to Au-25(PPh3)(10)(SR1)(5)X-2 nanorods and Au-25(SR2)(18) nanospheres) mainly are attributed to the different electronic properties and the steric effects of the alkyl and aromatic thiol ligands. The significant ligand effect also is observed in catalytic CO oxidation. The Au-25(SC2H4Ph)(18)/CeO2 catalyst shows catalytic activity at 80 degrees C and reaches up to 80.7% and 98.5% (based on CO conversion) at 100 and 150 degrees C, while Au-25(SNap)(18)/CeO2 and Au-25(PPh3)(10)(SC2H4Ph)(5)X-2/CeO2 give rise to a low activity at 100 degrees C with only 3.3% and 10.2% CO conversion and 98.0% and 94.6% at 150 degrees C.
语种英语
WOS记录号WOS:000359234100045
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146450
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Gold Catalysis Researcher Ctr, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Lin, Jizhi,Li, Weili,Liu, Chao,et al. One-phase controlled synthesis of Au-25 nanospheres and nanorods from 1.3 nm Au : PPh3 nanoparticles: the ligand effects[J]. NANOSCALE,2015,7(32):13663-13670.
APA Lin, Jizhi.,Li, Weili.,Liu, Chao.,Huang, Pan.,Zhu, Manzhou.,...&Li, Gao.(2015).One-phase controlled synthesis of Au-25 nanospheres and nanorods from 1.3 nm Au : PPh3 nanoparticles: the ligand effects.NANOSCALE,7(32),13663-13670.
MLA Lin, Jizhi,et al."One-phase controlled synthesis of Au-25 nanospheres and nanorods from 1.3 nm Au : PPh3 nanoparticles: the ligand effects".NANOSCALE 7.32(2015):13663-13670.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Lin, Jizhi]的文章
[Li, Weili]的文章
[Liu, Chao]的文章
百度学术
百度学术中相似的文章
[Lin, Jizhi]的文章
[Li, Weili]的文章
[Liu, Chao]的文章
必应学术
必应学术中相似的文章
[Lin, Jizhi]的文章
[Li, Weili]的文章
[Liu, Chao]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。