Surfactant-templated mesoporous

Figure 1. Schematic pathway for preparing surfactant-templated mesoporous silicas, illustrating a formation mechanism based on preformed liquid crystal (LC) mesophase (route A) or a cooperative process (route B). Reprinted from [20], Copyright (2008) WILEY-VCH Verlag GmbH Co.

S.N. Che, H.C. Li, S. Lim, Y. Sakamoto, O. Terasaki, and T. Tatsumi, Synthesis Mechanism of Cationic Surfactant Templating Mesoporous Silica under an Acidic Synthesis Process. Chem. Mater., 2005, 17, 4103 1113. 

Therefore only three examples for the use of surfactant templated mesoporous oxides in catalytic applications shall be highlighted here. More encompassing reviews on their catalytic properties can be found in two review articles [31,32] The first study elegantly used the combination of a suitable acid site strength and the influence of the regular mesopore system for the preparation of acetals from aldehydes [33]. MCM-41 was found to be superior to zeolites and amorphous... 

Surfactant-templated mesoporous siUcates have been the subject of intense research effort since the publication by Mobil scientists in 1992, of the syntheses for MCM-41, MCM-48 and MCM-50. Some have su ested that similar materials were prepared earlier, however... 

The AMS (anionic surfactant-templated mesoporous silicas) materi-aisi30,i40,i42 family of well-ordered organosilicas prepared using anionic... 

Modeling Triblock Surfactant Templated Mesoporous Silicas (MCF and SBA-15) A Mimetic Simulation Study... 

The silicate network can also act as an efficient size exclusion membrane. The pore size distribution can be controlled, at least to some extent, by incorporation of water soluble polymers such as poly(ethyleneglycol) or by pH changes (Brinker, 1989). Carefully tailored silicate membranes, using low pH synthesis even exhibit Knudsen flow, facilitating the separation of air components (Brinker, 1993). Incorporation of zeolites, surfactants, templated mesoporous silicates, and leaving template materials can be used to generate tailored size excluding films. 

FIGURE 4.20 Electrochemically deposited mesoporous film. Top Cross-sectional FE-SEM images for a film deposited on ITO after vertical cleaving. The scale bar corresponds to 100 nm. Bottom TEM image of the top view of a surfactant-templated mesoporous silica film electrodeposited on ITO. The scale bar corresponds to 20 nm. (From Walcarius, A., E. Sibottier, M. Etienne, and J. Ghanbaja, 2007. Nat Mater 6 602-608. Used with permission.)... 

Figure 9.8 TEM image of electrodeposited surfactant-templated mesoporous silica film (a) surface and (b) cross section (scale bar = 20nm) [87].

Electron-beam lithography assisted patterning of surfactant-templated mesoporous thin films. Nanotechnology,... 

Figure 12.10 TEM images of the electrode-posited surfactant-templated mesoporous silica films on Au (a, b) and glassy carbon (c, d) (a) low-magnification top view (scale bar ...

Scheme 16.6 Ionic interactions between anionic surfactant and cationic costructuredirecting agent (CSDA) in the synthesis of anionic surfactant template mesoporous silica (AMS). (Adapted from Ref. [100].)...

Lu Y (2006) Surfactant-templated mesoporous materials from inorganic to hybrid to organic. Angew Chem Int Ed 45 7664—7667... 

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