Abstract
The well-structured and controllable micro- or macromorphology of porous nanomaterials is of great importance for practical applications. The possibility to fabricate films, spheres, monoliths, and so on has been explored. Different morphologies show distinct potentials in various areas. Spheres can be used in biosensoring and chromatograph packing; films are applicable in the areas of catalysis and separation; and monoliths can find fit in photonic devices. Controllable synthesis on both the mesoscale (mesostructure) and macroscale (morphology) is therefore necessary. The assembly of structures and the control of morphologies for mesoporous materials is a concerted campaign and affect each other. The factors that determine the ultimate morphologies of the mesoporous materials include several elements: hydrolyzation and condensation of inorganic precursor species, types of the surfactant molecules, interaction between precursors or their related species and surfactants, additives, and physical techniques. As to mesoporous siliceous materials, one can achieve mesoporous structures with various morphologies such as fibers, films, monoliths, spheres, vesicles, and “single crystals,” through manipulating these factors. Notwithstanding, the morphologies of mesoporous non-siliceous materials are still restricted in several relatively simple types due to the considerably complicated reaction systems and unpredictable coordination between inorganic and organic moieties. Some classical morphologies of mesoporous hybrid materials are thus presented as follows.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call