Record-high benzene adsorption capacity of colloid-imprinted mesoporous carbons synthesized from biomass by ball milling

IF 8.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2024-12-15 DOI:10.1016/j.seppur.2024.131097
Barbara Szczęśniak, Łukasz Osuchowski, Jerzy Choma, Mietek Jaroniec
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Abstract

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 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. 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.

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Separation and Purification Technology
Separation and Purification Technology 工程技术-工程:化工
CiteScore
14.00
自引率
12.80%
发文量
2347
审稿时长
43 days
期刊介绍: Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.
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