School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China.
Faculty of Printing, Packaging Engineering and Digital Media, Xi'an University of Technology, Xi'an 710048, PR China.
Bioresour Technol. 2022 Mar;347:126424. doi: 10.1016/j.biortech.2021.126424. Epub 2021 Nov 25.
Monolithic carbon foams are promising materials for adsorption due to the easy recyclability and without secondary-pollution. However, poor adsorption efficiency for organic pollutants limits its practical application. Hence, this work proposed a novel monolithic porous carbon foam by a facile carbonization approach as freestanding electrodes to remove the organic dyes. The prepared carbon foam derived from waste cigarette filters and zeolitic-imidazolate frameworks-8 with well-developed pores, and the calculated surface area is 1457 m·g, and exhibited an outstanding removal efficiency for methylene blue in aqueous. The maximum adsorption capacity for methylene blue can reach up to 1846.7 mg·g under the applied voltage of -1.2 V. Importantly, as-prepared carbon foams possessed excellent stability, and the removal efficiency can remain above 85% after 5 cycles. Thus, obtained porous carbon foams in this paper as a free standing electrode is expected to be promising materials of adsorbent besides supercapacitors.
整体式碳泡沫由于易于回收且不会造成二次污染，是一种很有前途的吸附材料。然而，其对有机污染物的吸附效率较差，限制了其实际应用。因此，本工作提出了一种通过简便的碳化方法制备的新型整体式多孔碳泡沫，作为独立的电极来去除有机染料。所制备的碳泡沫由废香烟过滤器和沸石咪唑酯骨架-8 衍生而来，具有发达的孔道，计算的比表面积为 1457 m·g，对水溶液中的亚甲基蓝表现出优异的去除效率。在施加的-1.2 V 电压下，亚甲基蓝的最大吸附容量可达 1846.7 mg·g。重要的是，所制备的碳泡沫具有优异的稳定性，经过 5 次循环后，去除效率仍保持在 85%以上。因此，本文中获得的多孔碳泡沫作为一种独立的电极，有望成为除超级电容器之外的另一种有前途的吸附材料。
