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Synthesis of Cu2O/Ag Composite with Visible Light Photocatalytic Degradation Activity for in situ SERS Analysis
Yiping Wu
Author NameAffiliationE-mail
Yiping Wu Hefei University wuyp@hfuu.edu.cn 
Abstract:
In this study, a multifunctional Cu2O/Ag micro-nanocomposite, which has the characteristics of high catalytic activities under the visible light and high surface-enhanced Raman scattering (SERS) activity, was fabricated via a facile method and employed for the in situ SERS monitoring of the photocatalytic degradation reaction of crystal violet (CV). Through the variation of the AgNO3 concentration, Ag content on the Cu2O template can be controllably tuned, which has great influence on the SERS effect. The results indicate that Ag nanoparticles (NPs) form on the Cu2O nanoframes to obtain the Cu2O/Ag nanocomposite, which can act as an excellent bifunctional platform for in situ monitoring of photocatalytic degradation of organic pollutions by SERS.
Key words:  Cuprous oxide  silver nanoparticles  Surface-enhanced Raman scattering  Photo-catalytic degradation  in situ detection
FundProject:安徽高校省级自然科学重点基金,KJ2015A183
Cu2O/Ag复合物的合成及SERS原位分析其可见光催化降解活性
吴义平
摘要:
本论文通过一种简单的方法合成了多功能的Cu2O/Ag微纳米复合物:具有在可见光下的高度催化活性和高的表面增强拉曼散射 (SERS) 活性,利用其作为SERS基底,原位监测了结晶紫分子被催化降解过程。文中通过调节硝酸银的浓度,可控调节了氧化亚铜模板表面的银粒子的含量,其对SERS检测的灵敏度有很重要影响。结果显示这种将银粒子修饰在氧化亚铜模板表面得到的Cu2O/Ag复合物,可以作为优良的双功能基底,实现对有机污染物的可见光催化降解和SERS技术的原位监测。
关键词:  氧化亚铜,银纳米粒子,表面增强拉曼散射,光催化降解,原位检测
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