三维石墨烯的制备及其对罗丹明B的吸附性能

摘要

This paper describes a study building on a deeper understanding that improving the per-formance of adsorption and cyclicity of absorbing material is one of the topics in the field of water pollu-tion control. The study involves preparing three-dimensional graphene (3DG) using graphene oxide as a precursor and applying self-assembled solvent-thermal synthesis route; simulating wastewater using ad-sorption of rhodamine B to investigate the adsorption and recycling performance of 3DG, and identifying the adsorption mechanism. The results suggest that:3DG has the dye adsorption rate equivalent to that of activated carbon powder, but after 5 cycles, 3DG shows little change in the adsorption rate, and has a re-cycling adsorption utilization rate five times higher than that of activated carbon. It follows that 3DG dem-onstrates a better adsorption behaviour and cycle performance when applied to rhodamine B solution.%提高材料的吸附及循环性能，是污染物治理的课题之一。以氧化石墨烯为前驱体，采用溶剂热还原自组装技术，成功制备了三维石墨烯块材。研究三维石墨烯对罗丹明B溶液的吸附效果和循环使用性能。以活性炭作为参比，探讨了三维石墨烯的吸附机理。结果表明：三维石墨烯对染料的吸附率与活性炭粉吸附率相当，经五次循环后，三维石墨烯的吸附率基本不变，其循环吸附利用率是活性炭的五倍。三维石墨烯对罗丹明B溶液具有良好的吸附性能和循环使用性能。