UV-visible diffuse reflection spectrum, PL spectroscopy, FTIR spectrum, Photoelectrochemical testing，XRD images, Thermogravimetric images，SEM and TEM images of the prepared catalyst, structure file of Ru-B-C3N4

The instrument model used in this thesis is Fluoro Max4. ElectronScanning Electron Microscopy (SEM) is used to analyze the surface morphology, particle size, and other features of the material. The equipment used in this study was the Ultra Plus. Transmission electron microscopy (TEM) was used to characterize the surface morphology of the samples.In this study, a Thermo Fisher Scientific, Talos F200S microscope was used for imaging and data such as lattice fringes of the samples were analyzed using Gatan Digital Micrograph software. Thermal Gravimetric Analyzer (TGA) is an instrument that detects the temperature-mass change relationship of a substance using the thermogravimetric method.

The model of Thermal Gravimetric Analyzer equipment used in this experiment: TGA 4000. Photoelectrochemical testing: Photoelectrochemical testing of the series of samples was carried out on an electrochemical workstation (CHI650E, Shanghai Chenhua Instrument Co., Ltd., China) using a standard three-electrode system. The tests were performed under a 300 W xenon lamp (CEL-HXF300) light source using 0.5 M Na2SO4 as the electrolyte and a conductive glass coated with the sample (FTO) as the working electrode.