一种制备二维单层有序介孔材料的通用盐颗粒上实验室方法。
A Universal Lab-on-Salt-Particle Approach to 2D Single-Layer Ordered Mesoporous Materials.
作者信息
Liu Liangliang, Yang Xuanyu, Xie Yujie, Liu Huan, Zhou Xinran, Xiao Xingyu, Ren Yuan, Ma Zhen, Cheng Xiaowei, Deng Yonghui, Zhao Dongyuan
机构信息
Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China.
Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
出版信息
Adv Mater. 2020 Mar;32(10):e1906653. doi: 10.1002/adma.201906653. Epub 2020 Jan 29.
The advantages of existing ordered mesoporous materials have not yet been fully realized, due to their limited accessibility of in-pore surface and long mass-diffusion length. A general, controllable, and scalable synthesis of a family of two-dimensional (2D) single-layer ordered mesoporous materials (SOMMs) with completely exposed mesopore channels, significantly improved mass diffusion, and diverse framework composition is reported here. The SOMMs are synthesized via a surface-limited cooperative assembly (SLCA) on water-removable substrates of inorganic salts (e.g., NaCl), combined with vacuum filtration. As a proof of concept, the obtained CeO -based SOMMs show superior catalytic performance in CO oxidation with high conversion efficiency, ≈33 times higher than that of conventional bulk mesoporous CeO . This SLCA is a promising approach for developing next-generation porous materials for various applications.
由于现有有序介孔材料的孔内表面可及性有限且质量扩散长度较长，其优势尚未得到充分发挥。本文报道了一类二维（2D）单层有序介孔材料（SOMMs）的通用、可控且可扩展的合成方法，该材料具有完全暴露的介孔通道、显著改善的质量扩散以及多样的骨架组成。通过在无机盐（如NaCl）的可脱水底物上进行表面受限协同组装（SLCA）并结合真空过滤来合成SOMMs。作为概念验证，所制备的基于CeO的SOMMs在CO氧化反应中表现出优异的催化性能，转化效率高，比传统的块状介孔CeO高约33倍。这种SLCA是开发用于各种应用的下一代多孔材料的一种有前景的方法。
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