1：Experimental Design and Method Selection:

A one-step P123 soft template-assisted method was used for the synthesis of rhombohedral α-Fe2O

2：The photocatalytic degradation of BPA was conducted under simulated sunlight irradiation. Sample Selection and Data Sources:

BPA solutions of different concentrations (10-70 mg/L) were prepared using ultrapure water. Commercial α-Fe2O3 was used for comparison.

3：List of Experimental Equipment and Materials:

Chemicals included iron nitrate nonahydrate, urea, P123, BPA, and ethanol. Equipment included autoclave, centrifuge, oven, XRD, XPS, SEM, HRTEM, BET analyzer, TOC analyzer, photocatalytic reactor with Xe lamp, UV-vis spectrophotometer, and LC-MS/MS.

4：Experimental Procedures and Operational Workflow:

Synthesis involved dissolving P123 in ethanol, adding Fe(NO3)3·9H2O and urea, hydrothermal treatment at 180°C for 3 h, centrifugation, washing, drying, and grinding. Photocatalytic tests involved adding catalyst to BPA solution, stirring in dark for adsorption equilibrium, irradiation for 360 min, sampling every 30 min, filtering, and analyzing BPA concentration and intermediates.

5：Data Analysis Methods:

XRD for crystal structure, BET for surface area, SEM/HRTEM for morphology, XPS for elemental composition, UV-vis for BPA concentration, LC-MS/MS for intermediates, and TOC for mineralization. Kinetics analyzed using pseudo first-order model.