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Insights into Formation and Properties of Templated Dual Mesoporous Titania with Enhanced Photocatalytic Activity

Abstract : The one pot synthesis of dual mesoporous titania (2.3 and 7.7 nm) has been achieved from a mixture of fluorinated and Pluronic surfactants. The small and the large mesopores networks are templated respectively by a fluorinated-rich liquid crystal and a Pluronic-rich liquid crystal, which are in equilibrium. After calcination at 350°C the amorphous walls are transformed into semi-crystalline anatase preserving the mesoporous structure. Results concerning the photodegradation of methyl orange using the calcined photocatalysts highlight that the kinetic rate constant (k) determined for the dual mesoporous titania is 2.6 times higher than the k value obtained for the mono-modal ones.
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Submitted on : Saturday, February 19, 2022 - 6:18:27 PM
Last modification on : Wednesday, February 23, 2022 - 3:13:47 AM

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Issam Naboulsi, Bénédicte Lebeau, Laure Michelin, Cédric Carteret, Loic Vidal, et al.. Insights into Formation and Properties of Templated Dual Mesoporous Titania with Enhanced Photocatalytic Activity. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2017, 9 (3), pp.3113-3122. ⟨10.1021/acsami.6b13269⟩. ⟨hal-03581466⟩

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