A facile mechanochemical synthesis was used for the preparation of mesoporous carbons with large uniform mesopores. The one-pot synthesis relied on the fast ball milling of only two reagents, tannins, and silica colloids, within 10 min, followed by direct thermal treatment at 750 °C leading to carbons with uniform mesopores of about 25 nm, high specific surface areas up to ∼1000 m2/g, and total pore volumes up to 2.80 cm3/g. This seems to be the first attempt to employ mechanochemistry for the synthesis of colloid-imprinted carbons. Moreover, the procedure can be easily extended for the synthesis of carbons with bimodal mesoporosity by adding a Pluronic-type soft template to the milling system. The latter synthesis afforded carbons with bimodal mesoporosity, having predominantly pore sizes of 13.8 and 24.8 nm, a high specific surface area of 1218 m2/g, and an exceptionally high pore volume of 4.75 cm3/g, without using an activating agent. To the best of our knowledge, this sample adsorbed a record amount of benzene at 20 °C, namely 48.0 mmol/g (375 wt%). It is shown that the total pore volume is a determining factor for benzene adsorption on diverse porous solids. High mesoporosity in carbons might be essential in adsorption and catalysis-related applications.

中文翻译：

---

通过球磨法从生物质合成的胶体印迹介孔碳的苯吸附能力创下历史新高


采用简单的机械化学合成法制备具有大而均匀的介孔碳的介孔碳。一锅法合成依赖于在 10 分钟内仅使用两种试剂（单宁和二氧化硅胶体）进行快速球磨，然后在 750 °C 下进行直接热处理，得到的碳具有约 25 nm 的均匀介孔、高达 ∼1000 m2/g 的高比表面积和高达 2.80 cm3/g 的总孔体积。这似乎是第一次尝试使用机械化学合成胶体印迹碳。此外，通过在研磨系统中添加 Pluronic 型软模板，可以很容易地扩展该程序以合成具有双峰介孔性的碳。后一种合成提供了具有双峰介孔性的碳，主要具有 13.8 和 24.8 nm 的孔径、1218 m2/g 的高比表面积和 4.75 cm3/g 的极高孔体积，无需使用活化剂。据我们所知，该样品在 20 °C 时吸附的苯量创下了纪录，即 48.0 mmol/g （375 wt%）。结果表明，总孔隙体积是苯在各种多孔固体上吸附的决定因素。碳中的高介孔性在吸附和催化相关应用中可能是必不可少的。