Tailored Porous Materials

Abstract

Tailoring of porous materials involves not only chemical synthetic techniques for tailoring microscopic properties such as pore size, pore shape, pore connectivity, and pore surface reactivity, but also materials processing techniques for tailoring the meso-and the macroscopic . -properjjes of.bulk materiaIs in the form of fibers, thin films and monoliths. These issues are ..J, addressed in~e context of five specific classes of porous materials: oxide molecular sieves, porous coordination soIids, porous carbons, soI-gel derived oxides, and porous heteropolyanion < salts. Reviews of these specific areas are preceded by a presentation of background material and review of current theoretical approaches to adsorption phenomena. A concluding section outlines cunent research needs and opportunities.

Manipulating the cavity of a porous material changes the photoreactivity of included guests

“…(316 m 2 g À1 ). 3,7 This corresponds to a total pore volume of 0.059 cm 3 g À1 for pores smaller than 6.9 Å in diameter, which was similar to the values for host 1.…”

Solid-state synthesis of embedded single-crystal metal oxide and phosphate nanoparticles and in situ crystallization

“…[23,27] In addition, some relatively weak reflections are observed at 2θ = 5.9° and 6.4° suggest the formation of quantities of hexagonally ordered mesoporous SiO 2 . [28] The SEM images exhibit a tridimensional porous network, as is shown in Fig. 1b, and also in the TEM image in Fig.…”

Solventless Acid‐Free Synthesis of Mesostructured Titania: Nanovessels for Metal Complexes and Metal Nanoclusters

“…Since the first report of mesoporous titania, [14] prepared by the well-documented surfactant templating strategy, [11,12] there has been a great deal of effort devoted to the use of different titania precursors (e.g., alkoxides, halides, acetylacetonates, nanoclusters, colloids) in the synthesis and experiments designed to unravel the structure, property, and function relations of this material. [15,16] Little work has been devoted to understanding the mode of formation of mesoporous titania [17±19] and elucidating the differences with respect to nanocrystalline titania.…”