1：Experimental Design and Method Selection:

The study involved synthesizing large-sized porous skeleton structure AlON powder by carbothermal reduction and nitridation (CRN), then loading nanocrystalline TiO2 onto it using hydrothermal method. The composite was filtered to remove small particles for easy recovery. Photocatalytic performance was evaluated under UV-light irradiation.

2：Sample Selection and Data Sources:

AlON powder was synthesized from α-Al2O3, and P25 TiO2 was purchased. Pollutants used were Methylene blue (MB) and Methyl orange (MO) in aqueous solutions.

3：List of Experimental Equipment and Materials:

Equipment included XRD (D/Max-ULtima+, Rigaku, Japan), FE-SEM (supra 55, Zeiss, Germany), fluorescence spectrophotometer (FLSP920, Edinburgh Instruments, UK), UV-vis spectrophotometer (UV-3600, Shimadzu, Japan), high-pressure mercury lamp, and filtration setup with nylon filter (10 μm pore size). Materials included Al2O3, TiO2 (P25, Degussa, Germany), MB, MO, and deionized water.

4：Experimental Procedures and Operational Workflow:

AlON synthesis via CRN, hydrothermal treatment of TiO2 and AlON mixture at 180°C for 24 hours, filtration to retain particles >10 μm, photocatalytic degradation tests under UV-light with stirring, sampling, and concentration measurement using UV-vis spectrophotometry after centrifugation.

5：Data Analysis Methods:

XRD for phase composition, SEM for morphology, PL spectra for electron-hole recombination rate, and degradation rates calculated from UV-vis absorbance measurements.