Mesoporous Copper Nanoparticle Networks Decorated by Graphite Layers for Surface-Enhanced Raman Scattering Detection of Trace Analytes.

摘要: Assembling 3D nanoscale structures of plasmonic nanoparticles (NPs) holds great promise for achieving enhanced optical and electronic properties. This type materials exhibits a large number surface hot spots, while offer the possibility synergetic effects to be observed. In this study, we demonstrate facile, yet powerful, strategy fabricate mesoporous networks Cu NPs decorated with graphite layers (denoted as Cu/G) using polymer-assisted self-assembly method. We show that, after thermal processing, resulting Cu/G NP-linked retain an open interconnected porosity area (up 90 m2 g-1) narrow pore-size distribution (ca. 4.3 nm in size). Owing these characteristics, assemblies behave high-performance surface-enhanced Raman scattering (SERS) probes detection analytes very low concentrations. The substrates comprise low-cost, environmental benign chemical biological sensing applications.