1：Experimental Design and Method Selection:

The study employed a carbon-templating method to create mesoporous ZSM-5 zeolites, followed by wet impregnation with iron oxide for catalyst preparation. The photo-Fenton reaction was used for catalytic evaluation under visible light irradiation.

2：Sample Selection and Data Sources:

ZSM-5 zeolites were synthesized with varying amounts of nucleating gel and carbon particles (Black Pearls?2000). A model organic pollutant, Reactive Red 141 dye, was used for degradation tests.

3：0). A model organic pollutant, Reactive Red 141 dye, was used for degradation tests. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Reagents included sodium silicate, tetrapropylammonium hydroxide, aluminum sulfate, sulfuric acid, fumed silica, deionized water, carbon black (Black Pearls?2000), iron salt for impregnation, hydrogen peroxide, and acetone. Equipment included PTFE-lined stainless autoclaves, ultrasound equipment (Bransonic Ultrasonic Cleaner 2510R-MT), calcination furnace, X-ray diffractometer (Rigaku Miniflex model 300), surface area analyzer (Micromeritics ASAP 2020), scanning electron microscopes (FEI Inspect S 50 and Philips XL 30 FEG), UV-Vis spectrophotometer (Bel Photonics SP1105), atomic absorption spectrometer (Agilent Technologies 200 series AA), and a fluorescent lamp (EMPALUX, 85 W).

4：Experimental Procedures and Operational Workflow:

Synthesis involved preparing nucleating and precursor gels, adding carbon particles, hydrothermal treatment at 170°C for 12 h, washing, drying, calcination at 600°C, impregnation with iron salt using ultrasound and heat treatment at 250°C. Catalytic evaluation involved adding catalyst to dye solution, adjusting pH to

5：0, stirring for adsorption equilibrium, irradiating with lamp, adding hydrogen peroxide, sampling with syringe filter, and measuring dye concentration. Data Analysis Methods:

XRD for crystallinity, BET for textural properties, SEM for morphology, EDS for chemical analysis, UV-Vis for dye concentration, atomic absorption for iron leaching, and statistical calculation of decolorization efficiency.