Biocompatible tailored zirconia mesoporous nanoparticles with high surface area for theranostic applications

Gabriele Sponchia, Emmanuele Ambrosi, Flavio Rizzolio, Mohamad Hadla, Anna Del Tedesco, Concetta Russo Spena, Giuseppe Toffoli, Pietro Riello, Alvise Benedetti

Research output: Contribution to journalArticlepeer-review


Nanocarriers as theranostic agents are under the spotlight in modern nanomedicine, and mesoporous nanomaterials represent a class of devices of major interest. Zirconia is biocompatible, inert with good mechanical and thermal properties for in vivo biomedical applications. Although a few examples of zirconia nanoparticles have been described, a major limitation was the low surface area, which is fundamental for payload transport. Here, a simple and highly efficient method is described for the synthesis of spherical mesoporous zirconia nanoparticles (MZNs) with a high surface area through a neutral surfactant-assisted sol-gel method. The combination of alkali halides and vacuum extraction allowed stabilization of the shape and size of MZNs and to avoid porous network failure, respectively. In comparison to published synthesis procedures, a high surface area has been obtained. Biological experiments demonstrated that MZNs were biocompatible, cell permeable and degradable providing a proof of concept for theranostic applications. A comparison with the properties of mesoporous silica nanoparticles has also been performed.

Original languageEnglish
Pages (from-to)7300-7306
Number of pages7
JournalJournal of Materials Chemistry B
Issue number36
Publication statusPublished - Aug 7 2015

ASJC Scopus subject areas

  • Biomedical Engineering
  • Medicine(all)
  • Chemistry(all)
  • Materials Science(all)


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