Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles
文献类型：期刊论文
| 作者 | Yang AiLing1; Li ShunPin1; Wang YuJin1; Wang LeLe1; Bao XiChang2; Yang RenQiang2
|
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 58期号:5页码:881-888 |
| 关键词 | Ag@Cu2O core-shell metal-semiconductor nanoparticle conversion Ag@Cu core-shell bimetallic nanoparticle PVP tunable optical properties FTIR |
| 英文摘要 | Ag@Cu2O core-shell metal-semiconductor nanoparticles (NPs) were prepared by using solution phase strategy. It was found that Ag@Cu2O core-shell NPs were easily converted to Ag@Cu bimetallic core-shell NPs with the help of surfactant PVP and excessive reducer ascorbic acid in air at room temperature, which is a unique phenomenon. Varying volumes of Ag colloidal solutions were added into the reaction mixtures containing fixed initial concentrations of Cu2+ and PVP, Ag@Cu2O and Ag@Cu core-shell NPs with fixed core size but varying outer shell thicknesses could be obtained. The composites, structures, morphologies and extinction properties of Ag@Cu2O and Ag@Cu core-shell NPs were systematically characterized by XRD, TEM and extinction spectra. Both of these NPs show wide tunable optical properties. The extinction peaks could be shifted from 421 nm to 700 nm. FTIR results reveal that Cu+ ions on the surface of Cu2O nanocrystalline coordinate with N and O atoms in PVP and further are reduced to metallic Cu by excessive ascorbic acid and then form a nucleation site on the surface of Cu2O nanocrystalline. PVP binds onto a different site to proceed with the reduction until all the Cu sources in Cu2O NPs are completely assumed. And the shell of Cu2O is converted to Cu shell. The synthesis approach in this paper is simple and also a promising reference for synthesizing other core-shell NPs. Ag@Cu2O NPs can be easily converted to Ag@Cu NPs in air at room temperature, which is promising to be used in electronic devices. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | CUPROUS-OXIDE ; PHOTOCATALYTIC PERFORMANCE ; PLASMONIC PHOTOCATALYSTS ; CATALYTIC-ACTIVITY ; OPTICAL-PROPERTIES ; SHAPE EVOLUTION ; LOW-TEMPERATURE ; SOLAR-CELLS ; GROWTH ; COMPOSITE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000354250000015 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/6484]  |
| 专题 | 青岛生物能源与过程研究所_先进有机功能材料团队 |
| 作者单位 | 1.Ocean Univ China, Dept Phys, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang AiLing,Li ShunPin,Wang YuJin,et al. Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2015,58(5):881-888. |
| APA | Yang AiLing,Li ShunPin,Wang YuJin,Wang LeLe,Bao XiChang,&Yang RenQiang.(2015).Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,58(5),881-888. |
| MLA | Yang AiLing,et al."Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 58.5(2015):881-888. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
浏览0
下载0
收藏0
其他版本
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。