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Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles
Yang AiLing1; Li ShunPin1; Wang YuJin1; Wang LeLe1; Bao XiChang2; Yang RenQiang2
2015-05-01
发表期刊SCIENCE CHINA-TECHNOLOGICAL SCIENCES
卷号58期号:5页码:881-888
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.
文章类型Article
关键词Ag@cu2o Core-shell Metal-semiconductor Nanoparticle Conversion Ag@cu Core-shell Bimetallic Nanoparticle Pvp Tunable Optical Properties Ftir
WOS标题词Science & Technology ; Technology
DOI10.1007/s11431-015-5797-0
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研究方向Engineering ; Materials Science
WOS类目Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS记录号WOS:000354250000015
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/6484
专题先进有机功能材料研究组
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.
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