银-氧化锌纳米复合材料用作表面增强拉曼光谱基底并促进对巯基苯乙酮的偶联反应。

Ag-ZnO Nanocomposites Are Used for SERS Substrates and Promote the Coupling Reaction of PATP.

作者信息

Ma Liping, Zhang Qijia, Li Jia, Lu Xuemei, Gao Ce, Song Peng, Xia Lixin

机构信息

College of Chemistry, Liaoning University, Shenyang 110036, China.

College of Physics, Liaoning University, Shenyang 110036, China.

出版信息

Materials (Basel). 2021 Feb 15;14(4):922. doi: 10.3390/ma14040922.

DOI:10.3390/ma14040922

PMID:33672047

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7919486/

Abstract

Noble metal-semiconductor nanocomposites have received extensive attention in Surface Enhanced Raman Scattering (SERS) due to their unique properties. In this paper, the Ag-ZnO nanocomposites are prepared by hydrothermal growth and simple chemical reduction immersion. The synthesized nanocomposite material simultaneously integrates the individual enhancement effects of the two materials in the SERS, such as the electromagnetic enhancement of silver nanoparticles and the chemical enhancement of ZnO semiconductor materials. Using this substrate, Rhodamine 6G molecules with a concentration as low as 10 M can be detected, and the coupling reaction of PATP can be effectively promoted. The nanocomposite materials prepared by selecting appropriate semiconductor materials and metal materials combined, could be potentially applied, as SERS substrates, in certain catalytic reactions.

摘要

贵金属-半导体纳米复合材料因其独特性能在表面增强拉曼散射（SERS）领域受到广泛关注。本文通过水热生长和简单化学还原浸渍法制备了Ag-ZnO纳米复合材料。合成的纳米复合材料在SERS中同时整合了两种材料各自的增强效应，如银纳米颗粒的电磁增强和ZnO半导体材料的化学增强。使用该基底，可检测到浓度低至10 M的罗丹明6G分子，且能有效促进对巯基苯甲酸（PATP）的耦合反应。通过选择合适的半导体材料与金属材料组合制备的纳米复合材料，有望作为SERS基底应用于某些催化反应。