Fluoride-assisted galvanic replacement synthesis of Ag and Au dendrites on aluminum foil with enhanced SERS and catalytic activities | |
Department | 固体润滑国家重点实验室 |
Ye WC(叶为春)1; Chen Y(陈阳)1; Zhou F(周峰)2; Wang CM(王春明)1; Li YM(李玉民)3; Ye WC(叶为春); Li YM(李玉民) | |
2012 | |
Source Publication | Journal of Materials Chemistry |
ISSN | 0959-9428 |
Volume | 22Issue:35Pages:18327-18334 |
Abstract | Although Al has a lower redox potential [Al3+/Al, −1.67 V vs. SHE] than most metallic ions, metal galvanic replacement reactions on pure aluminum foil can be hardly observed because of the existence of the thin layer of aluminum oxide, In this work, we develop a facile, economical and general approach to achieve large-scale production of silver and gold dendrites as well as other metal hierarchical micro/nanostructures (Cu, Pt, Pd, Ni, Co and Zn) on commercial aluminum foil in the presence of NaF or NH4F. Studies of the galvanic replacement reaction by open circuit potential–time (OCP–t) measurements demonstrate that fluoride plays an important role in etching the alumina layer and thus induces the continuous proceeding of the galvanic replacement reaction. The synthesis process is carried out at room temperature and without any templates, surfactants, or special reagents. The obtained silver and gold dendrites show significantly enhanced SERS signals of a self-assembled monolayer of 2-naphthalenethiol and 4-mercaptobenzoic acid, and also could effectively catalyze the reduction reaction of 4-nitrophenol and 2-nitrophenol at room temperature. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1039/c2jm32170j |
Funding Organization | the Natural Science Foundation of Gansu Province, China (no. 1107RJZA261);the Fundamental Research Funds for the Central Universities (no. lzujbky-2011-25);Foundation of Key Laboratory of Digestive System Tumors, Gansu Province (no. lzujbky-2011-t03-12) |
Indexed By | SCI |
If | 6.108 |
Language | 英语 |
Funding Project | 材料表面与界面行为研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/3373 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Ye WC(叶为春); Li YM(李玉民) |
Affiliation | 1.Department of Chemistry and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3.Key Laboratory of Digestive System Tumors, China |
Recommended Citation GB/T 7714 | Ye WC,Chen Y,Zhou F,et al. Fluoride-assisted galvanic replacement synthesis of Ag and Au dendrites on aluminum foil with enhanced SERS and catalytic activities[J]. Journal of Materials Chemistry,2012,22(35):18327-18334. |
APA | Ye WC.,Chen Y.,Zhou F.,Wang CM.,Li YM.,...&李玉民.(2012).Fluoride-assisted galvanic replacement synthesis of Ag and Au dendrites on aluminum foil with enhanced SERS and catalytic activities.Journal of Materials Chemistry,22(35),18327-18334. |
MLA | Ye WC,et al."Fluoride-assisted galvanic replacement synthesis of Ag and Au dendrites on aluminum foil with enhanced SERS and catalytic activities".Journal of Materials Chemistry 22.35(2012):18327-18334. |
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