Synthesis of gold nanoflowers assisted by a CH-CF hybrid surfactant and their applications in SERS and catalytic reduction of 4-nitroaniline | |
Department | 清洁能源化学与材料实验室 |
Liu BY(刘宝勇)1,2,3; Yang, Mei1,4; Li HG(李洪光)1; Li HG(李洪光) | |
The second department | 固体润滑国家重点实验室 |
2017 | |
Source Publication | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
ISSN | 0927-7757 |
Volume | 520Pages:213-221 |
Abstract | In this paper, an effective approach was successfully developed to synthesize gold nanoflowers (GNFs) using a hydrocarbon/fluorocarbon (CH-CF) hybrid surfactant (1). Upon mixing with aqueous solution of 1 in presense of AgNO3, HAuCl4 could be reduced into GNFs by ascorbic acid (AA). Influences of aging time, concentration of HAuCl4, AgNO3, AA and 1 as well as temperature were investigated in detail. GNFs could not be obtained at the absence of AgNO3 and 1, indicating that both of them play important roles in the formation of these anisotropic gold structures. Influences of AA and temperature are relatively less pronounced, and well-defined GNFs can be synthesized in a wide range of the concentration of AA (1×10−3 mol·L−1 to 6 × 10−3 mol·L−1) and temperature (25–50 °C). The GNFs have inhomogenous cores, indicating that they are formed by the aggregation of gold crystals of smaller sizes. A two-stage growth pathway was thus proposed to explain the mechanism of the formation of GNFs. With a large surface-to-volume ratio, GNFs show surface-enhanced Raman scattering for solid R6G with enhancement factors up to a magnitude of 106. They can also be used as efficient catalysts for the reduction of 4-nitroaniline by KBH4. The strategy demonstrated here is a facile, rapid, and contrallable one-pot method for the synthesis of GNFs in aqueous solution, which will bring out a wide range of applications. |
Keyword | Gold Nanoflowers Hydrocarbon/fluorocarbon Hybrid Surfactant Surface-enhanced Raman Scattering Catalysts 4-nitroaniline |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.colsurfa.2017.01.087 |
Funding Organization | the Hundred Talents Program of Chinese Academy of Sciences (Y20245YBR1);National Natural Science Foundation of China (no. 21402215;no. 61474124) |
Indexed By | SCI |
If | 2.714 |
Language | 英语 |
Funding Project | 柔性有机太阳能电池研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21903 |
Collection | 清洁能源化学与材料实验室 固体润滑国家重点实验室(LSL) |
Corresponding Author | Li HG(李洪光) |
Affiliation | 1.State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China 4.R & D Institute, Maoming Branch of Sinopec, Maoming 525011, China |
Recommended Citation GB/T 7714 | Liu BY,Yang, Mei,Li HG,et al. Synthesis of gold nanoflowers assisted by a CH-CF hybrid surfactant and their applications in SERS and catalytic reduction of 4-nitroaniline[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2017,520:213-221. |
APA | Liu BY,Yang, Mei,Li HG,&李洪光.(2017).Synthesis of gold nanoflowers assisted by a CH-CF hybrid surfactant and their applications in SERS and catalytic reduction of 4-nitroaniline.Colloids and Surfaces A: Physicochemical and Engineering Aspects,520,213-221. |
MLA | Liu BY,et al."Synthesis of gold nanoflowers assisted by a CH-CF hybrid surfactant and their applications in SERS and catalytic reduction of 4-nitroaniline".Colloids and Surfaces A: Physicochemical and Engineering Aspects 520(2017):213-221. |
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