Ding Ying, Zhu Jianzhong, Ji Dongliang, Cao Yang, Ling Xiaojia, Chen Wei
Key Laboratory for Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
Key Laboratory for Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
J Colloid Interface Sci. 2015 Aug 15;452:134-140. doi: 10.1016/j.jcis.2015.04.040. Epub 2015 Apr 25.
Highly ordered mesoporous carbon may be directly synthesized via supramolecular self-assembly with in situ evaporation-induced crystallization process by controlling thermal reaction temperatures and carbon mass loading. In the present study, the effects of thermal reaction temperatures on the structural characterization and adsorption capacity of mesoporous carbon have been investigated and analyzed with orthogonal test experiments. The results show the carbonization temperature (R=32.1) plays a more important role than the self-assembly temperature (R=8.5) and thermal polymerization temperature (R=10.1) in manipulating the pore texture structures. The optimization grouping temperature was 40-110-500 °C. The optimum mesoporous carbon sample had the highest BET specific surface area (474 m(2)/g), the largest pore volume (0.46 cm(3)/g), and with reasonable uniform pore size distribution. The adsorption evaluation also shows the adsorption capacity is strongly correlated with the pore structure of mesoporous carbon, the optimized mesoporous carbon sample displayed the largest adsorption capacity (350 mg/g) at an initial concentration of 20.0 mg/L of dichloroacetic acid. The study results indicate optimization of thermal reaction parameters is an effective approach for synthesis of ordered mesoporous carbons.
通过控制热反应温度和碳负载量，利用超分子自组装和原位蒸发诱导结晶过程可直接合成高度有序的介孔碳。在本研究中，通过正交试验研究并分析了热反应温度对介孔碳结构表征和吸附容量的影响。结果表明，在控制孔结构方面，碳化温度（R = 32.1）比自组装温度（R = 8.5）和热聚合温度（R = 10.1）起着更重要的作用。优化分组温度为40 - 110 - 500℃。最佳介孔碳样品具有最高的BET比表面积（474 m²/g）、最大的孔体积（0.46 cm³/g）以及合理均匀的孔径分布。吸附评估还表明，吸附容量与介孔碳的孔结构密切相关，优化后的介孔碳样品在二氯乙酸初始浓度为20.0 mg/L时表现出最大吸附容量（350 mg/g）。研究结果表明，优化热反应参数是合成有序介孔碳的有效方法。
