1：Experimental Design and Method Selection:

The study involved synthesizing CdS via a hydrothermal method and Ag/CdS via photodeposition. Photocatalytic removal experiments were conducted under visible light to assess debromination efficiency.

2：Sample Selection and Data Sources:

BDE47 (purity >98%) was used as the target pollutant, dissolved in methanol/water mixtures.

3：List of Experimental Equipment and Materials:

Equipment included a 300 W Xe lamp with a 420 nm cutoff filter, autoclave, SEM, XRD, XPS, UV-vis spectrophotometer, PL spectrophotometer, HPLC, ion-chromatography system, and GC-MS. Materials included cadmium acetate dihydrate, thiourea, silver nitrate, methanol, acetonitrile, tetrahydrofuran, and deionized water.

4：Experimental Procedures and Operational Workflow:

CdS synthesis at 120°C for 12 h, Ag deposition via photochemical reduction under N2 atmosphere with irradiation, photocatalytic reactions in a photocell with magnetic stirring, sampling at intervals, filtration, and analysis using HPLC, ion-chromatography, and GC-MS.

5：Data Analysis Methods:

Data were analyzed using XRD for crystal structure, XPS for valence states, UV-vis for absorbance, PL for charge carrier recombination, and chromatographic techniques for concentration and intermediate identification.