1：Experimental Design and Method Selection:

The synthesis involved a microwave-assisted hydrothermal method for fast heating and high yield. Characterization techniques included XRD, Raman spectroscopy, XPS, FE-SEM, and PL spectroscopy to analyze phase, morphology, and optical properties. Photocatalytic activity was assessed by degrading rhodamine B and salicylic acid under visible light.

2：Sample Selection and Data Sources:

Analytical grade chemical reagents were used without further treatment. Samples included pure BiOCl, pure Bi2WO6, and BiOCl/Bi2WO6 nanocomposites with varying weight percentages (30%, 50%, 70%, 80%).

3：List of Experimental Equipment and Materials:

Equipment included an X-ray diffractometer (Rigaku SmartLab), Raman spectrometer (HORIBA JOBIN-YVON T64000), FE-SEM (JEOL JSM 6335F), XPS (Kratos Axis Ultra DLD), luminescence spectrometer (Perkin Elmer LS 50B), UV-visible spectrophotometer (Perkin Elmer Lambda 25), and a microwave oven (270 W, 2.45 GHz). Materials included Bi(NO3)3·5H2O, Na2WO4·2H2O, KCl, ethylene glycol, HNO3, NH4OH, DI water, ethanol, rhodamine B, and salicylic acid.

4：45 GHz). Materials included Bi(NO3)3·5H2O, Na2WO4·2H2O, KCl, ethylene glycol, HNO3, NH4OH, DI water, ethanol, rhodamine B, and salicylic acid. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Solutions A and B were prepared, mixed, pH adjusted to 7, stirred, and heated in a microwave oven for 50 min (10 cycles of 5 min irradiation and 5 min non-irradiation). Products were filtered, washed, dried, and characterized. Photocatalytic tests involved stirring catalyst in organic solutions in the dark for 30 min, then irradiating with a Xe lamp, sampling every 10 min, and measuring concentration with a spectrophotometer.

5：Data Analysis Methods:

Photocatalytic degradation efficiency was calculated using a formula based on concentration changes. Kinetics followed a pseudo-first-order model with rate constants determined from linear plots. PL intensity was used to assess recombination rates of electron-hole pairs.