A novel composite material with wood-based carbon quantum dots modified Bi2MoO6 hollow microspheres

Composite materials made from renewable resources are challenging, requiring innovative research. In this study, carbon quantum dots (CQDs) were obtained via a simple hydrothermal method using waste larch wood as the raw material without the use of toxic reagents. The CQDs have a delocalized conjugated structure and can cause rapid photogenerated electron-hole pair separation and a relatively slow recombination. They also emit blue-green light upon independent excitation and are potential candidates for use as novel activators. 3D Bi 2 MoO 6 hollow microspheres are expected to become competitive structures, since they can be synthesized via a mixed solvothermal method without the need for added surfactants or other hard-template conditions. The formation mechanism of Bi 2 MoO 6 hollow microspheres was systematically examined. Bi 2 MoO 6 hollow microspheres were selected in this research as the matrix and were doped with CQDs to synthesize a new composite material, CQDs/Bi 2 MoO 6 . It was observed that methylene blue could be degraded by Bi 2 MoO 6 hollow microspheres using visible light irradiation, and the photocatalytic performance was increased when modified with CQDs. Additionally, the separation of photogenerated electron-hole pairs was enhanced via the addition of CQDs to Bi 2 MoO 6 . Thus, the CQDs/Bi 2 MoO 6 system was more effective for the degradation of methylene blue when irradiated using visible light.