Zirconia-Based Magnetoplasmonic Nanocomposites: A New Nanotool for Magnetic-Guided Separations with SERS Identification

Anna Del Tedesco, Valentina Piotto, Gabriele Sponchia, Khohinur Hossain, Lucio Litti, Davide Peddis, Alessandro Scarso, Moreno Meneghetti, Alvise Benedetti, Pietro Riello

Research output: Contribution to journalArticlepeer-review


In the field of nanomaterials, multifunctional nanosystems play a prominent role in many applications as new magnetically recoverable catalysts, information processing, fuel cells, efficient bio/nanosensors, and nanomedicine. Aiming at the obtainment of new nanomaterials for biotechnological applications such as biosensors or theragnostic systems, we present a multifunctional system able to merge different properties in only one nanotool. The system is prepared by loading the pores of mesoporous zirconia nanoparticles with CoFe2O4, by a wet impregnation method, further modifying the surface of the material with bis(phosphonic acid) to load gold nanoparticles, produced by laser ablation. The obtained nanocomposite functionalized with a SERS probe represents a specific example of a magnetoplasmonic nanosystem. The results show the efficacy of the strategy of exploiting mesoporous zirconia nanoparticles for obtaining magnetoplasmonic nanotools.

Original languageEnglish
Pages (from-to)1232-1241
Number of pages10
JournalACS Applied Nano Materials
Issue number2
Publication statusPublished - Feb 28 2020
Externally publishedYes


  • bis(phosphonic acid)
  • CoFeO nanoparticles
  • gold nanoparticles
  • magnetic sorting
  • SERS
  • zirconia nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)


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