Open AccessInsights into the Formation and Properties of Templated Dual Mesoporous Titania with Enhanced Photocatalytic Activity
Author(s) -
Issam Naboulsi,
Bénédicte Lebeau,
Laure Michelin,
Cédric Carteret,
Loı̈c Vidal,
Magali Bonne,
JeanLuc Blin
Publication year - 2016
Publication title -
acs applied materials and interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.535
H-Index - 228
eISSN - 1944-8252
pISSN - 1944-8244
DOI - 10.1021/acsami.6b13269
Subject(s) - mesoporous material , materials science , methyl orange , photocatalysis , calcination , crystallinity , anatase , photodegradation , mesoporous organosilica , chemical engineering , amorphous solid , poloxamer , nanotechnology , mesoporous silica , organic chemistry , polymer , copolymer , catalysis , composite material , chemistry , engineering
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 large mesopore 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 semicrystalline 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 monomodal ones.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom