Jump to main content
Jump to site search

Bi2SiO5@g-SiO2 Upconverting Nanoparticles: A Bismuth-Driven Core-Shell Self-Assembly Mechanism


Core-shell systems have attracted increasing interest among the research community in recent years due to their unique properties and structural features, and the development of new synthetic strategies is still a challenge. In this work, we have investigated lanthanide-doped Bi2SiO5 nanocrystal formation inside mesoporous silica nanoparticles (MSNs). The role of both synthesis temperature and concentration of bismuth precursor impregnated into the MSNs are discussed, showing an unprecedent strategy for the simultaneous stabilization of a crystalline core and a glassy shell. Temperature dependent synchrotron radiation x-ray powder diffraction (SR-XRPD) and high resolution trasmission electron microscopy (HR-TEM) analyses allow following the crystalline core growth. A mechanism for the formation of Bi2SiO5@g-SiO2 core-shell nanosystem is proposed. In addition, the easy tunability of the color output of the upconverting system is demonstrated by means of suitable doping lanthanide ions with potentialities in several application fields.

Back to tab navigation

Supplementary files

Publication details

The article was accepted on 03 Dec 2018 and first published on 05 Dec 2018

Article type: Paper
DOI: 10.1039/C8NR08649D
Citation: Nanoscale, 2018, Accepted Manuscript
  •   Request permissions

    Bi2SiO5@g-SiO2 Upconverting Nanoparticles: A Bismuth-Driven Core-Shell Self-Assembly Mechanism

    M. Back, E. Trave, G. Zaccariello, D. Cristofori, P. Canton, A. Benedetti and P. Riello, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR08649D

Search articles by author