Green synthesis of two-dimensional copper nanomaterials using biomass for the reduction of carbon dioxide

The problem of greenhouse gas emissions has become increasingly severe, so energy conservation and emissions reduction have become a critical challenge for our society. In response to the challenge of lowering carbon dioxide (CO2) emissions and transforming them into valuable energy molecules, this work explores the eco-friendly preparation of two-dimensional (2D) nanocopper-based catalysts. In this study, biomass was utilized as both the reductant and the capping reagent to prepare these catalysts. The structure and morphology of the resulting products were analyzed using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). Their crystal structures were characterized by X-ray diffraction (XRD). The synthesis process of this type of nanomaterials was also studied. These copper-based catalysts were then evaluated for their efficiency in reducing CO2 into small energy molecules of HCOOH. A significant innovation of this study is using biomass as the reductant and capping agent, which guarantees the green synthesis process and exhibits great potential in converting CO2 into valuable energy molecules. This research is significant for creating new energy sources and protecting the environment.