#Article Recyclable Multifunctional Magnetic Fe3O4@SiO2@Au Core/Shell Nanoparticles for SERS Detection of Hg (II) by Chao Liu, et al. doi.org/10.3390/chemos… @MDPIOpenAccess #coreshellnanoparticles #4pyridinethiol #surfaceenhancedRamanspectroscopy #MercuryIIion #Ramancellimaging