Effects of templating surfactant concentrations on the mesostructure of ordered mesoporous anatase TiO2 by an evaporation-induced self-assembly method

Hung, I‐Ming; Wang, Yih; Huang, Cheng-Fa; Fan, Yu-Shen; Han, Yi-Jhen; Peng, Hao-Wei

doi:10.1016/j.jeurceramsoc.2010.04.015

Cited by 31 publications

(10 citation statements)

References 30 publications

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“…However, the quantity of titanium isopropoxide is likely not optimum to get two ordered mesopore networks. This hypothesis is supported by results previously reported in the literature , about the formation of monomodal mesoporous TiO 2 . For example, in a paper dealing with the preparation of wormhole-like mesoporous titania by using P123 as a surfactant and tetrabutyl orthotitanate (TBOT) as a titanium source, Hung et al have reported that the wormhole-like structure is recovered only for P123/TBOT molar ratios located in the range from 0.013 to 0.025.…”

Section: Resultssupporting

confidence: 92%

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

Naboulsi

Lebeau

Michelin

et al. 2017

ACS Appl. Mater. Interfaces

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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.

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Section: Resultssupporting

confidence: 92%

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

Naboulsi

Lebeau

Michelin

et al. 2017

ACS Appl. Mater. Interfaces

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“…Ozin and co-workers reported a similar mechanism in the case of TiO 2 mesoporous films synthesized in the presence of Pluronic P123. 61,62 Moreover, the growth of TiO 2 appeared to be more controlled in the presence of polymers than without, as we failed to detect large aggregates after one month of aging ( Figure S7). Therefore, one can assign the dBCP role to be that of both a ligand and an assembling agent during the aging step and the evaporation of BnOH, respectively.…”

Section: Articlementioning

confidence: 91%

Benzyl Alcohol and Block Copolymer Micellar Lithography: A Versatile Route to Assembling Gold and in Situ Generated Titania Nanoparticles into Uniform Binary Nanoarrays

et al. 2011

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Simultaneous synthesis and assembly of nanoparticles that exhibit unique physicochemical properties are critically important for designing new functional devices at the macroscopic scale. In the present study, we report a simple version of block copolymer micellar lithography (BCML) to synthesize gold and titanium dioxide (TiO(2)) nanoarrays by using benzyl alcohol (BnOH) as a solvent. In contrast to toluene, BnOH can lead to the formation of various gold nanopatterns via salt-induced micellization of polystyrene-block-poly(vinylpyridine) (PS-b-P2VP). In the case of titania, the use of BCML with a nonaqueous sol-gel method, the "benzyl alcohol route", enables the fabrication of nanopatterns made of quasi-hexagonally organized particles or parallel wires upon aging a (BnOH-TiCl(4)-PS(846)-b-P2VP(171))-containing solution for four weeks to grow TiO(2) building blocks in situ. This approach was found to depend mainly on the relative lengths of the polymer blocks, which allows nanoparticle-induced micellization and self-assembly during solvent evaporation. Moreover, this versatile route enables the design of uniform and quasi-ordered gold-TiO(2) binary nanoarrays with a precise particle density due to the absence of graphoepitaxy during the deposition of TiO(2) onto gold nanopatterns.

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“…A series of 2D-hexagonal titania mesoporous materials were prepared by varying the ratio of P123 to TBT. The mesoporous material prepared at a P123/TBT mole ratio of 0.2 possessed a surface area of 244 m 2 /g [ 86 ]. Citric acid was added to a mixture of TPT and F127 to form mesoporous titania [ 52 ].…”

Section: Synthesismentioning

confidence: 99%

“…Non-ionic co-polymer surfactants are usually removed by calcination at temperatures in the range of 300–350 °C. Such temperatures are preferred because excessive sintering of the titanium framework causes pore wall collapse [ 35 , 36 , 38 , 39 , 43 , 49 , 51 , 61 – 63 , 65 , 77 , 84 , 86 , 89 – 96 ]. Ozin and co-workers used P123 as the surfactant for the preparation of mesoporous TiO 2 and calcined the material in air at either 350 °C or 400 °C and obtained reasonable hexagonal pore ordering [ 35 ].…”

Section: Synthesismentioning

confidence: 99%

Versatility of Evaporation-Induced Self-Assembly (EISA) Method for Preparation of Mesoporous TiO2 for Energy and Environmental Applications

2014

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Evaporation-Induced Self-Assembly (EISA) method for the preparation of mesoporous titanium dioxide materials is reviewed. The versatility of EISA method for the rapid and facile synthesis of TiO2 thin films and powders is highlighted. Non-ionic surfactants such as Pluronic P123, F127 and cationic surfactants such as cetyltrimethylammonium bromide have been extensively employed for the preparation of mesoporous TiO2. In particular, EISA method allows for fabrication of highly uniform, robust, crack-free films with controllable thickness. Eleven characterization techniques for elucidating the structure of the EISA prepared mesoporous TiO2 are discussed in this paper. These many characterization methods provide a holistic picture of the structure of mesoporous TiO2. Mesoporous titanium dioxide materials have been employed in several applications that include Dye Sensitized Solar Cells (DSSCs), photocatalytic degradation of organics and splitting of water, and batteries.

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Effects of templating surfactant concentrations on the mesostructure of ordered mesoporous anatase TiO2 by an evaporation-induced self-assembly method

Cited by 31 publications

References 30 publications

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

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

Benzyl Alcohol and Block Copolymer Micellar Lithography: A Versatile Route to Assembling Gold and in Situ Generated Titania Nanoparticles into Uniform Binary Nanoarrays

Versatility of Evaporation-Induced Self-Assembly (EISA) Method for Preparation of Mesoporous TiO2 for Energy and Environmental Applications

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