Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles

doi:10.1007/s11431-015-5797-0

QIBEBT-IR > 先进有机功能材料研究组

	Synthesis of Ag@Cu2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles
	Yang AiLing 1; Li ShunPin 1; Wang YuJin 1; Wang LeLe 1; Bao XiChang 2; Yang RenQiang 2
	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
DOI	10.1007/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.