Deposition of low-density thick silica films from burning sol-gel derived alcogels.
Combustion synthesis
Low density
Porous silica
Silanol-free
Sol-gel
Journal
Heliyon
ISSN: 2405-8440
Titre abrégé: Heliyon
Pays: England
ID NLM: 101672560
Informations de publication
Date de publication:
Jul 2021
Jul 2021
Historique:
received:
17
03
2021
revised:
23
05
2021
accepted:
26
07
2021
entrez:
12
8
2021
pubmed:
13
8
2021
medline:
13
8
2021
Statut:
epublish
Résumé
In the current study we show that the combustion of sol-gel derived alcogels with specifically tailored composition leads to the release of silica nanoparticles from the burning alcogel in a controlled manner which enables direct deposition of the released nanoparticles into low-density silica thick films. The process has some similarities to flame spray pyrolysis but requires no aerosol generator or other sophisticated instrumental setup. By the proper choice of catalysts and mixture of silicon alkoxides for the synthesis of the alcogel, preferential hydrolysis and polycondensation of one of the alkoxides is achieved. This leads to the formation of an alcogel with volatile silica precursor trapped in the gel pores. Resulting alcogels were burned to deposit uniform porous silica films with density of ~0.1 g/cm
Identifiants
pubmed: 34381910
doi: 10.1016/j.heliyon.2021.e07675
pii: S2405-8440(21)01778-3
pmc: PMC8340126
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e07675Informations de copyright
© 2021 The Authors. Published by Elsevier Ltd.
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
Références
J Chromatogr Sci. 2002 Nov-Dec;40(10):538-49
pubmed: 12515356
Chem Soc Rev. 2016 Jun 13;45(12):3377-99
pubmed: 26563577
Acc Chem Res. 2007 Sep;40(9):863-73
pubmed: 17650924
Part Fibre Toxicol. 2019 Oct 29;16(1):40
pubmed: 31665028
Int J Nanomedicine. 2010 Dec 16;6:19-31
pubmed: 21289978
Chem Soc Rev. 2013 May 7;42(9):3753-64
pubmed: 23081802
Langmuir. 2006 Nov 21;22(24):10238-45
pubmed: 17107027
Proc Natl Acad Sci U S A. 2020 Nov 10;117(45):27836-27846
pubmed: 33097669