1：Experimental Design and Method Selection:

The study involves synthesizing 2D composites via a hydrothermal method to form Schottky junctions between graphene oxide (GO) and transition-metal dichalcogenides (TMDs), followed by characterization and testing of photoelectric and electrocatalytic properties.

2：Sample Selection and Data Sources:

Samples include 2D-WS2/2D-GO, 2D-MoS2/2D-GO, and control samples like 0D-WS2/2D-GO and 3D-MoS2/2D-GO, synthesized using specific concentrations of precursors in deionized water.

3：List of Experimental Equipment and Materials:

Equipment includes scanning electron microscope (SEM), transmission electron microscope (TEM), high-resolution TEM (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM), cyclic voltammetry (CV) setup, Tafel polarization setup, and devices for I-V and photoelectric response measurements. Materials include WCl6, GO dispersion, C2H5NS, MoCl5, deionized water, ethanol, TiO2, FTO glass, N719 dye, electrolytes (LiI, 1-butyl-3-methylimidazolium iodide, I2, 4-tert-butylpyridine, guanidinium thiocyanate in acetonitrile), and conductive carbon ink.

4：Experimental Procedures and Operational Workflow:

Synthesis involves mixing precursor solutions, hydrothermal treatment at 200°C for 24 hours, centrifugation, washing, and drying. Characterization includes SEM, TEM, HRTEM, XRD, XPS, AFM for structural and chemical analysis. Electrochemical tests involve CV and Tafel polarization. Device fabrication includes preparing photoanodes, counter electrodes, and assembling DSCs. Photoelectric response is measured under standard solar illumination.

5：Data Analysis Methods:

Data analysis uses software for XPS peak fitting, DigitalMicrograph for lattice spacing measurement, and standard techniques for interpreting CV, Tafel, and I-V curves to determine catalytic activity and efficiency.