Lamellar nanoporous gold thin films with tunable porosity for ultrasensitive SERS detection in liquid and gas phase
Adrien Chauvin, Marta Lafuente, Jean‐Yves Mevellec, Reyes Mallada, Bernard Humbert, M.P. Pina, Pierre‐Yves Tessier, Abdel‐Aziz El Mel
Abstract
. These performance is mainly attributed to the specific nanoporous gold architecture and the larger accessible surface to volume ratio. The lamellar nanoporous gold substrate is explored for sensitive SERS detection of dimethyl methylphosphonate (DMMP), a surrogate molecule of the highly toxic G-series nerve agents. The resultant nanostructure facilitates the diffusion of target molecules through the nanopores and their localization at the enhancing metallic surface leading to the unequivocal Raman signature of DMMP at a concentration of 5 parts per million.
Topics & Concepts
NanoporousLamellar structureMaterials sciencePorosityLiquid phaseNanotechnologyGas phasePhase (matter)Chemical engineeringComposite materialChemistryOrganic chemistryThermodynamicsPhysicsEngineeringNanoporous metals and alloysGold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and Applications