Ordered mesoporous non-oxide materials

Abstract

Ordered mesoporous inorganic non-oxide materials attract increasing interest due to their plenty of unique properties and functionalities and potential applications. Lots of achievements have been made on their synthesis and structural characterization, especially in the last five years. In this critical review, the ordered mesoporous non-oxide materials are categorized by compositions, including non-oxide ceramics, metal chalcogenides, metal nitrides, carbides and fluorides, and systematically summarized on the basis of their synthesis approaches and mechanisms, as well as properties. Two synthesis routes such as hard-templating (nanocasting) and soft-templating (surfactant assembly) routes are demonstrated. The principal issues in the nanocasting synthesis including the template composition and mesostructure, pore surface chemistry, precursor selection, processing and template removal are emphatically described. A great number of successful cases from the soft-templating method are focused on the surfactant liquid-crystal mesophases to synthesize mesostructured metal chalcogenide composites and the inorganic-block-organic copolymer self-assembly to obtain non-oxide ceramics (296 references).

Periodic Mesoporous Organosilica Coated Prussian Blue for MR/PA Dual‐Modal Imaging‐Guided Photothermal‐Chemotherapy of Triple Negative Breast Cancer

“…However, pure PB nanoparticles cannot deliver drug for cancer chemotherapy because of their small micropores and limited loading capacity. Periodic mesoporous organosilicas (PMOs) synthesized via surfactant‐directed sol–gel process has been used for drug delivery because of their uniform and large mesopore size, high surface area, organic groups incorporated frameworks, and excellent biodegradation and biocompatibility 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43. Based on the unique features, we presumed that an imaging‐guided combination therapy strategy can be developed by intergating the advantages of PMO and PB.…”

Textural Characterization of Micro- and Mesoporous Carbons Using Combined Gas Adsorption and n-Nonane Preadsorption

“…One well-known example for mesoporous carbon materials is called CMK (Carbon Mesostructured by Kaist). 18,19 This type of carbon exhibits an ordered arrangement of uniform sized pores and it is synthesized by a hard-templating approach (also referred to as Nanocasting) 20,21 of sucrose into ordered mesoporous silica templates (OMS).…”

Macroporous materials by self-assembly of linear oligo(phenylsilsesquioxanes).

“…Minor transitions occur at 763 K (only for samples of low M w ) and 953 K. Residue left in N 2 at 1173 K (71%) is larger than the calculated one (41%), which suggests entrapment of carbon in the structure during the process [55]. TGA traces in N 2 show also a small increase of sample weight above 1073 K that can be related to the formation of silicon nitride in the process of carbothermal reduction of Si-O structures in the residue [56,57]. Two step (833 and 923 K) thermooxidative decomposition of Ph-LPSQ in air by release of benzene and combustion of the organic part results in the formation of silica (residue of 46%, calculated 46.5%).…”