Jankovský Ondřej, Lojka Michal, Jiříčková Adéla, Aneziris Christos G, Storti Enrico, Sedmidubský David
Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic.
Institute of Ceramic, Glass and Construction Materials, Technische Universität Bergakademie Freiberg, Agricolastraße 17, 09599 Freiberg, Germany.
Materials (Basel). 2020 Apr 24;13(8):2006. doi: 10.3390/ma13082006.
The aim of this paper is to prepare nano-functionalized ceramic foam filters from carbon-bonded alumina. The carbon-bonded filters were produced via the Schwartzwalder process using a two-step approach. The prepared ceramic foam filters were further coated using graphene oxide. Graphene oxide was prepared by the modified Tour method. The C/O of the graphene oxide ratio was evaluated by XPS, EDS and elemental analysis (EA). The amount and type of individual oxygen functionalities were characterized by XPS and Raman spectroscopy. The microstructure was studied by TEM, and XRD was used to evaluate the interlayer distance. In the next step, filters were coated by graphene oxide using dip-coating. After drying, the prepared composite filters were used for the purification of the water containing lead, zinc and cadmium ions. The efficiency of the sorption was very high, suggesting the potential use of these materials for the treatment of wastewater from heavy metals.
本文的目的是由碳结合氧化铝制备纳米功能化泡沫陶瓷过滤器。碳结合过滤器采用施瓦茨瓦尔德工艺通过两步法制备。制备的泡沫陶瓷过滤器进一步用氧化石墨烯进行涂层处理。氧化石墨烯通过改进的Tour法制备。通过X射线光电子能谱（XPS）、能谱仪（EDS）和元素分析（EA）对氧化石墨烯的C/O比进行评估。通过XPS和拉曼光谱对单个氧官能团的数量和类型进行表征。通过透射电子显微镜（TEM）研究微观结构，并用X射线衍射（XRD）评估层间距离。下一步，采用浸涂法用氧化石墨烯对过滤器进行涂层处理。干燥后，将制备的复合过滤器用于含铅、锌和镉离子的水的净化。吸附效率非常高，表明这些材料在处理重金属废水方面具有潜在用途。
