Order Mesoporous Carbon Spheres with Precise Tunable Large Pore Size by Encapsulated Self‐Activation Strategy,Advanced Functional Materials

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Order Mesoporous Carbon Spheres with Precise Tunable Large Pore Size by Encapsulated Self‐Activation Strategy
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-06-22 , DOI: 10.1002/adfm.201802332
Juan Du ₁ , Lei Liu ₁ , Zepeng Hu ₁ , Yifeng Yu ₁ , Yuming Qin ₁ , Aibing Chen ₁

Affiliation

Order mesoporous carbon spheres (O‐MCS) have wide applications in catalysis, absorption, and energy storage/conversion due to their ordered mesoporous channels, large surface areas, and quantum effects in the nanoscale. However, realizing a precise control of large mesoporous size still remains a big challenge. Herein, an encapsulated self‐activation strategy to prepare highly ordered mesoporous carbon spheres with precise tunable large pore sizes is first reported. The large mesopore size is achieved by encapsulating mesoporous polymer sphere in compact silica shell for pyrolysis process. Moreover, the self‐activation mechanism endows the O‐MCS high surface area, large mesoporous size, and pore volume. In addition, simply increasing the amount of silica precursor will enlarge the pore sizes of O‐MCS from 3.1 to 10.0 nm with increased specific surface area from 696 to 1186 m² g⁻¹. The large order mesoporous structure of O‐MCS, which can facilitate diffusion of guest molecules in the channels exhibit great advantage in the adsorption and electrochemical applications.

中文翻译：

通过封装自激活策略订购具有精确可调大孔径的介孔碳球

有序介孔碳球（O-MCS）由于其有序的介孔通道，较大的表面积和纳米级的量子效应而在催化，吸收和能量存储/转化中具有广泛的应用。然而，实现大中孔尺寸的精确控制仍然是一个巨大的挑战。本文首次报道了一种封装的自活化策略，以制备具有精确可调大孔径的高度有序的介孔碳球。大的中孔尺寸是通过将中孔聚合物球囊封装在致密的二氧化硅壳中进行热解过程来实现的。此外，自激活机制赋予O-MCS高表面积，大中孔尺寸和孔体积。此外，简单地增加二氧化硅前体的量会使O-MCS的孔径从3.1扩大到10。² g ^-1。O-MCS的大孔介孔结构可促进客体分子在通道中的扩散，在吸附和电化学应用中显示出极大的优势。

更新日期：2018-06-22

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