Construction Hierarchically porous Materials Based on Block Copolymer and Covalent Organic Framework

What is it about?

Hierarchically ordered mesoporous materials have gained significant scientific attention due to their high surface areas, uniform porosity over various lengths scales, high-volume storage capability, shape selectivity, enhanced mass transport and diffusion. These materials have been widely applied in the fields of photocatalysis, separation, adsorption, photovoltaic solar cells, energy storage and conversion, chemical sensing, and drug delivery. In general, hierarchically porous materials can be generated in two ways: through sol-gel template approaches and a combination of surfactant-assisted procedures. In this review, we discuss recent progress in the preparation, properties, and potential applications of four hierarchically ordered porous materials: hierarchical mesoporous silica, mesoporous phenolic/carbon, nitrogen-doped mesoporous carbon, and mesoporous/microporous covalent organic frameworks.

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Why is it important?

In this Review, we discuss recent progress made in the preparation, properties, and possible applications of four types of hierarchically ordered meso/microporous materials: mesoporous silica, mesoporous phenolic/carbon, N-doped mesoporous carbon, and mesoporous COFs. The construction of these hierarchically meso/microporous materials has received much attention from both academia and industry because, when compared with ordered mesoporous materials, they can exhibit interfacial transport, provide large surface areas for reactions, minimize diffusion barriers, possess tunable pore structures, improve mass transport and provide ready accessibility for guests. As a result, the materials discussed in this review have many diverse potential applications in many fields like energy storage and conversion, photocatalysis, drug delivery, and CO2 uptake.

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