Nanocrystalline F-doped tin dioxide materials: texture, morphology and photosensitization with a perylene-substituted organotin - Sorbonne Université Access content directly
Journal Articles Journal of Fluorine Chemistry Year : 2004

Nanocrystalline F-doped tin dioxide materials: texture, morphology and photosensitization with a perylene-substituted organotin

Abstract

The controlled hydrolysis of fluoro(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin followed by annealing at 400–550 °C gave conductive mesoporous F-doped SnO2 materials. The materials consist of a porous network of aggregated nanoparticles, the mesoporosity observed corresponding to the interparticle space. Tuning of the annealing temperature enabled us to prepare materials with surface areas ranging from 70 to 150 m2 g−1, with an average pore size comprised between 50 and 100 Å and with a mean particle diameter ranging from 50 to 120 Å. Resistivities as low as 1–2 Ω cm were measured for the sample treated at 550 °C which contained 2–3 at.% of fluorine. This powder reacted with 3-(6-trihex-1-ynylstannylhexyl)perylene to furnish a dye-sensitized F-doped SnO2 mesoporous materials. An intensity-dependent photocurrent was produced under blue light illumination using the cavity microelectrode (CME) technique. With an aqueous NaBr solution, the photopotential reaches 700 mV, a value slightly higher than that found for an undoped sensitized SnO2 powder (∼600 mV).

Dates and versions

hal-04197716 , version 1 (06-09-2023)

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Cite

Chi-Hwan Han, Bernard Jousseaume, Marie-Claude Rascle, Thierry Toupance, Hubert Cachet, et al.. Nanocrystalline F-doped tin dioxide materials: texture, morphology and photosensitization with a perylene-substituted organotin. Journal of Fluorine Chemistry, 2004, 125 (8), pp.1247-1254. ⟨10.1016/j.jfluchem.2004.05.012⟩. ⟨hal-04197716⟩
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