▎ 摘　　要

The tunable electronic properties of graphene oxide (GO) nanomaterials make them interesting candidates for photoenergy conversion applications, including photoluminescence, photovoltaics, and photocatalysis for water splitting. GO nanomaterials can be categorized as GO sheets or GO quantum dots. Various techniques have been developed for tuning the electronic structures of GO nanomaterials to promote the quantum efficiency of photoenergy conversion. This review highlights the mechanisms governing the photoenergy conversion of GO nanomaterials and provides design strategies for the enhancement of quantum efficiency through the tuning of surface chemistry in accordance with the requirements of specific applications.