Fuzzy, copper-based multi-functional composite particles serving simultaneous catalytic and signal-enhancing roles

摘要: Multifunctional plasmonic particles serving simultaneously as catalysts and label-free reporting agents are highly pursued due to their great potential in enhancing reaction operational efficiencies. Copper is an abundant economic resource, it possesses practical applicability industries, but no dual-functional copper-based catalytic self-reporting have been reported so far. This study proposes a facile strategy prepare high-performance composite that catalyze reactions serve SERS (surface enhanced Raman spectra) active, agent. Polyelectrolyte-modified reduced graphene oxide used the reactive precursors fabrication method. Upon adding Cu(NO3)2 solutions into precursor dispersions, comprised by copper/copper core polyelectrolyte–graphene shell were facilely obtained under sonication. The as-prepared efficiently catalyzed conversion of 4-nitrophenol 4-aminophenol acted SERS-active substrate give spectra produced 4-aminophenol. Taking advantage assembling capabilities polyelectrolyte shells, could be further assembled onto planar organic reactions, facilitating application various conditions. We expect this report promote multifunctional particles.