1：Experimental Design and Method Selection:

Hydrothermal synthesis was used to prepare Bi2MoO6 and I-doped Bi2MoO6 samples. The structure, morphology, composition, and optical properties were characterized by various techniques including XRD, FTIR, TEM, BET surface area analysis, XPS, UV–visible absorption, and PL spectroscopy.

2：Sample Selection and Data Sources:

Bi(NO3)3·5H2O, Na2MoO4·2H2O, and 0–3% NaI by weight were used as precursors. The pH of the solutions was adjusted to 10 by NH4OH.

3：List of Experimental Equipment and Materials:

X-ray diffractometer (XRD, Philips X’Pert MPD), Fourier transform infrared spectrometer (FTIR, Bruker Tensor 27), transmission electron microscope (TEM, JEOL JEM-2010), Nova surface area and pore size analyzer–Quantachrome, X-ray photoelectron spectrometer (S/N:10001, Prevac, Poland), luminescence spectrometer (LS 50B, Perkin Elmer), UV–visible spectrometer (Perkin Elmer, Lambda 25 UV–vis spectrometer).

4：Experimental Procedures and Operational Workflow:

The solutions were transferred into a 200-ml Teflon-lined stainless steel autoclave, sealed, and heated at 180°C for 24 h. The photocatalytic activities were evaluated through the degradation of rhodamine B under visible light irradiation.

5：Data Analysis Methods:

The photocatalytic degradation was calculated using a pseudo-first-order kinetic model.