新型炭材料Issue(1)：30-40,11.DOI:10.1016/S1872_5805(15)60173_1
原位自组装石墨烯块体材料:性质、结构及pH依赖自组装行为
Self_assembled graphene monoliths：properties, structures and their pH_dependent self_assembly behavior
摘要
Abstract
Fabricating self_supporting, three dimensional graphene macroscopic structures from two dimensional graphene sheets by self_assembly has been an intriguing subject in exploring the performance of graphene structures for practical advanced applica_tions. Monolithic graphene hydrogels ( GHs) with quite good mechanical properties and excellent resilience were self_assembled from graphene oxide ( GO) dispersions under hydrothermal conditions by changing the pH value. The structure_property relation_ships and the self_assembly behavior of GHs were investigated. It was found that the formation of GHs was pH_dependent. The charge state of carboxyl groups on the graphene was the key factor that influenced the balance of attraction and repulsion interactions of the GO and consequently determined the self_assembly behavior. Both the graphene molecular structure and colloidal interactions were correlated with the unique self_assembly behavior, which can be used to design graphene arrangements with various structures, functions and mechanical properties. This method is superior to the conventional method that adjusts the concentration and reduction time of the GO dispersion.关键词
石墨烯结构/石墨烯水凝胶/石墨烯骨架/三维/自组装/构效关系Key words
Graphene architectures/Graphene hydrogels/Graphene framework/Three_dimension/Self_assembly/Structure_activi_ty分类
化学化工引用本文复制引用
王刚,贾丽涛,侯博,李德宝,王俊刚,孙予罕..原位自组装石墨烯块体材料:性质、结构及pH依赖自组装行为[J].新型炭材料,2015,(1):30-40,11.基金项目
国家自然科学基金(21003149,21076218).@@@@National Natural Science Foundation of China (21003149,21076218) （21003149,21076218）
