期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 227, 期 -, 页码 57-64出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2016.02.015
关键词
Ordered mesoporous carbon; FDU-15; Soft templating; Evaporation-induced self assembly
类别
资金
- National Science Foundation (NSF) [CBET-1159295]
- Wright Center of Innovation award from The Third Frontier Program of the state of Ohio
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1159295] Funding Source: National Science Foundation
Large-scale (multigram-to-kilogram) fabrication of soft-templated ordered mesoporous carbon (OMC) is enabled by roll-to-roll (R2R) processing via evaporation induced self assembly of Pluronic F127, oligomeric phenolic resin (resol), and tetraorthosilicate (TEOS) from ethanolic solution. The solution concentration, TEOS loading (etchable for microporous framework), and crosslinking temperature impact the pore structure. Here we demonstrate that mesoporous carbons with surface areas up to 2455 m(2)/g can be obtained under the proper processing conditions. Transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS) and nitrogen adsorption-desorption isotherms reveal (i) suppressed framework shrinkage with increasing solution concentration during casting, (ii) improved long range order and higher surface area with increasing TEOS content up to 3:1 TEOS:resol, and (iii) enhanced porosity with crosslinking at 100 degrees C. These differences can be explained on the basis of block copolymer thermodynamics and mechanical reinforcement by silica. This family of OMCs are effective adsorbents for bulky aqueous organic dyes, such as methylene green (MG) and methyl blue (MB), with high adsorption capacities of 0.436 g MG/g OMC and 0.378 g MB/g OMC obtained. This R2R method provides a facile method to generate significant quantities of OMCs with tunable pore textures. (C) 2016 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据