Fabrication of Graphene Oxide Supported Acid–Base Bifunctional Metal–Organic Frameworks as Efficient Catalyst for Glucose to 5-Hydroxymethylfurfural Conversion

Developing a supported-type metal–organic frameworks (MOFs) catalyst with multifunctional active sites is essential to broaden its application as a heterogeneous catalyst. Herein, polydopamine (PDA)-modified graphene oxide (PDA@GO) is used as a support to prepare an acid–base bifunctional UiO-66-type MOFs catalyst in green solution (aqueous solution) through a one-pot method. By adjusting the amount between GO, PDA, UiO-66-NH₂, and UiO-66-SO₃H, the heterogeneous solid catalyst UiO-66-SO₃H-NH₂/PDA@GO with uniform distribution of MOFs can be obtained. The morphology and various properties of the catalyst are characterized and the catalytic performance of the catalyst for the conversion of glucose to 5-hydroxymethylfurfural (5-HMF) is demonstrated and discussed. Herein, the supported-type MOFs catalyst offers an alternative way to promote current acid–base catalytic systems for achieving efficient production of 5-HMF from sustainable biomass.