ISGS eSeminar, April 2021



Professor Sidney J.L. Ribeiro

Institute of Chemistry – São Paulo State University – UNESP 14800-060, Araraquara-SP Brazil ( ORCID- 0000-0002-8162-6747; Research ID- E-9864-2012


In this eSeminar we will summarize the work done on lanthanidebased materials and organic-inorganic hybrids (OIH). Starting from our early work on the utilization of Eu3+ as a structural probe in SnO2 -based materials, going through sensors for hepatitis C based on Eu3+ emission properties and several OIHs until the utilization of upconversion nanoparticles towards nanothermometry/ nanoheating and IR pumped photocatalysts.

In a second part we will present new organic-inorganic aerogel hybrids that have been prepared based on bacterial cellulose (BC) aerogels and inorganic photocatalysts like TiO2 , BiVO4 and MoS2 . These innovative materials gather the BC aerogel properties like mechanical stability, flexibility, and microporous structure together with the unique photocatalytic and surface properties, and mesoporous structure of the inorganic counterpart.

Acknowledgments – Brazilian agencies FAPESP, CNPq and CAPES and the Brazilian National Institute of Photonics ( are acknowledged for financial support.

It is our pleasure to invite you to join the second ISGS eSeminar on Wednesday 7 April, which will be delivered by Professor Sidney Ribeiro. Sidney’s interesting career journey was recently profiled in the December 2020 issue of the ISGS Newsletter, including his many contributions to the professional and social fabric of the sol-gel community, and we invite you to read more about his achievement.

Date: Wednesday 7 April


  • ZOOM (eSeminar link), Meeting ID: 307 291 6432 Passcode: A1A8xUx


  • 10:00 – Brazil (São Paulo) and Argentina
  • 13:00 – UTC 16:00 – Israel, Eastern Europe, Ukraine
  • 21:00 – China, Singapore, Malaysia
  • 23:00 – Australia (East Coast)
  • 09:00 – USA, East Coast
  • 15:00 – Central Europe, Sweden, Norway
  • 16:00 – Russia (Moscow, St Petersburg)
  • 22:00 – Japan