▎ 摘　　要

Developing a method to convert biomass sources into valuable products has always been a matter of great in-terest to many researchers. In this work, a cellulose-derived magnetic iron oxide/sulfonated graphene oxide-like (Cel-MSGO) material was synthesized from corncob by sulfonation and hydrothermal processing, in order to catalyze the conversion of hemicellulose to furfural. Characteristics of the as-synthesized Cel-MSGO were investigated using modern analytical methods. Scanning electron microscopy revealed that Fe3O4 particles were attached to the surface of sheets structurally similar to sulfonated graphene oxide. The sheet-like structure of the obtained Cel-MSGO was also observed from high-resolution transmission electron microscopy as similar to that of graphene oxide. The Cel-MSGO material was investigated for its ability to convert hemicellulose of corncob into furfural through the following factors: reaction temperature, reaction time, amount of catalyst, and solvent ratio H2O:gamma-valerolactone (H2O:GVL). The Cel-MSGO material showed excellent catalysis with a furfural yield of 55.05%, xylose conversion of 97.80%, and furfural selectivity of 57.20% under reaction conditions of 190 degrees C, a reaction time of 150 min, and a catalyst amount of 10 wt% in a solvent system consisting 80:20 H2O:GVL (v/v). Furthermore, the catalyst showed good reusability after 6 cycles. This study opens a new application direction in utilizing biomass to synthesize high-value products, contributing to reducing environmental pollution and solving the situation of exhausted renewable raw materials.