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Title: Preparation of SiO2—TiO2 composite aerogels and SiO2@TiO2 core-shell aerogels with high thermal stability and enhanced photocatalysis

Patent ·
OSTI ID:2222216
; ;

According to one inventive concept, a method for forming an aerogel includes forming a SiO2 gel, forming a mixture of the SiO2 gel and a TiCl4-derived precursor sol, wherein the TiCl4 sol is comprised of TiCl4 and a solvent, forming a SiO2/TiO2 wet gel, drying the SiO2/TiO2 wet gel, and heating the dried SiO2/TiO2 gel.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of Sao Paulo (Brazil)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA); University of Sao Paulo (São Paulo, BR)
Patent Number(s):
11,739,000
Application Number:
16/790,498
OSTI ID:
2222216
Resource Relation:
Patent File Date: 02/13/2020
Country of Publication:
United States
Language:
English

References (13)

Nanoscale effects of silica particle supports on the formation and properties of TiO2 nanocatalysts journal January 2013
Superfícies fotocatalíticas de titânia em substratos cerâmicos: Parte I: Síntese, estrutura e fotoatividade journal December 2013
Silica gel carrying titanium oxide photocatalyst patent October 2003
Sol Containing Titanium Dioxide, Thin Film Formed Therefrom and Production Process of the Sol patent-application November 2006
Silica–Titania Composite Aerogel Photocatalysts by Chemical Liquid Deposition of Titania onto Nanoporous Silica Scaffolds journal February 2015
Photocatalytic activity of epoxide sol–gel derived titania transformed into nanocrystalline aerogel powders by supercritical drying journal August 2006
Thermally stable SiO2-doped mesoporous anatase TiO2 with large surface area and excellent photocatalytic activity journal April 2010
Effect of Silica Additive on the Anatase-to-Rutile Phase Transition journal July 2001
Synthesis of inorganic aerogels via rapid gelation using chloride precursors journal January 2013
Catalyst, Catalytic Converter, and Method for the Production Thereof patent-application May 2013
Controlling Atomic Layer Deposition of TiO 2 in Aerogels through Surface Functionalization journal May 2009
Heterogeneous catalysts patent August 1999
Atomic Layer Deposition of TiO 2 on Aerogel Templates: New Photoanodes for Dye-Sensitized Solar Cells journal June 2008

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