Mesoporous TM oxides

Mesoporous TM Oxide Materials by Surfactant-Assisted Soft Templating... 

The difficulty in direct synthesis of mesoporous transition metal oxides by soft templating (surfactant micelles) arises from their air- and moisture-sensitive sol-gel chemistry [4,10,11]. On the other hand, mesoporous silica materials can be synthesized in nimierous different solvent systems (i.e., water or water-alcohol mixtures), various synthetic conditions (Le., acidic or basic, various concentration and temperature ranges), and in the presence of organic (Le., TMB) and inorganic additives (e.g., CT, SO, and NOs ) [12-15]. The flexibility in synthesis conditions allows one to synthesize mesoporous silica materials with tunable pore sizes (2-50 nm), mesostructures (Le., 2D Hexagonal, FCC, and BCC), bimodal porosity, and morphologies (Le., spheres, rods, ropes, and cubes) [12,14,16-19]. Such a control on the physicochemical parameters of mesoporous TM oxides is desired for enhanced catalytic, electronic, magnetic, and optical properties. Therefore, use... 

The coulombic surfactant-inorganic (S-I) interaction was the first interaction used in the synthesis of mesoporous MCM silica materials. Likewise, early efforts for the synthesis of mesoporous TM oxides utilized the coulombic interaction as the primary S-I interaction. In these studies, cetyltrimethylammonium bromide (CTABr) as a cationic surfectant and sodium dodecyl sulfate (SDS) as an anionic... 

In this chapter, we have summarized recent progresses for the synthesis of mesoporous TM oxide materials using surfactant micelles as a soft template. More... 

---