以间苯二酚和甲醛为原料,通过溶胶-凝胶反应、超临界干燥、炭化等工艺合成制备出炭气凝胶,对炭气凝胶的微观结构进行了表征,并研究了炭气凝胶电极在不同电压和在不同浓度NaCl溶液中的电吸附性能。实验结果表明炭气凝胶电极具有很高的吸附效率,在20min内基本达到吸附平衡。随着外加电压的加大,处理溶液浓度的升高,炭气凝胶电极吸附平衡时间减小,单位吸附量增加,吸附单元内电流增加。
In this paper,carbon aerogel was synthesized by sol-gel reaction through supercritical evaporation and carbonization and so on,using resorcinol and formaldehyde as raw materials.The microscopic structure was characterized by SEM and N2 sorption and desorption.The effect of applied voltage and NaCl solution concentration on performance of electrosorption was studied.The results showed that carbon aerogel electrode has high electrosorption efficiency,and sorption balance was achieved within 20min.With applied voltage and NaCl solution concentration increasing,electrosorption time decreased,moreover electrosorption capacity and current increased.
参考文献
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