A new way to prepare tin oxide precursor polymeric gels

Wael Hamd (1) , Alexandre Boulle (2) , Elsa Thune (2) , René Guinebretière (2)

1 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
2 Axe 3 : organisation structurale multiéchelle des matériaux

Transparent tin oxide gels are elaborated in the isopropoxide/toluene/isopropanol system. The gelation occurs at room temperature without any acid or base additions. The formation of the SnO2 precursor gels polymeric network is evidenced by Fourier transform infrared spectroscopy. The gelation time is studied as a function of the complexing ratio R = [acac]/[Sn(OR)4], the hydrolysis ratio W = [H2O]/[Sn(OR)4], the concentration of tin oxide precursor C = [Sn(OR)4], and the volume fraction of toluene P = (toluene volume) / (total solvent volume).

Mots clés: Tin oxide; Sol–gel; Role of toluene; Gelation time

Wael Hamd, Alexandre Boulle, Elsa Thune, René Guinebretière. A new way to prepare tin oxide precursor polymeric gels. Journal of Sol-Gel Science and Technology, 2010, 55, pp.15-18. ⟨10.1007/s10971-010-2206-9⟩. ⟨hal-00496733⟩