63. Graphene Oxide Facilitates the Solvent-Free Synthesis of Well-Dispersed and Faceted Zeolite Crystals
作者：H. Li, X. Liu, S. Qi, L. Xu, G. Shi,* Y. Ding, Y. Huang, J. Geng,*
關鍵字：Faceted crystals, Graphene oxide, Oriented growth, Solvent-free synthesis, Zeolites
論文來源：期刊
具體來源：Angew. Chem. Int. Ed. 2017, 56, 14090–14095
發表時間：2017年
Zeolites with molecular dimension pores are widely used in petrochemical and fine-chemical industries. While traditional solvothermal syntheses suffer from environmental, safety, and efficiency issues, the newly developed solvent-free synthesis is limited by zeolite crystal aggregation. Herein, we report well-dispersed and faceted silicalite ZSM-5 zeolite crystals obtained using a solvent-free synthesis facilitated by graphene oxide (GO). The selective interactions between the GO sheets and different facets, which are confirmed by molecular dynamics simulations, result in oriented growth of the ZSM-5 crystals along the c-axis. More importantly, the incorporation of GO sheets into the ZSM-5 crystals leads to the formation of mesopores. Consequently, the faceted ZSM-5 crystals exhibit hierarchical pore structures. This synthetic method is superior to conventional approaches because of the features ofthe ZSM-5 zeolite.