1：Experimental Design and Method Selection:

The study used an impregnation method to fabricate [Mo3S13]2?/TiO2 composites with varying [Mo3S13]2? loadings (0.6 wt%, 1.1 wt%, 1.7 wt%, 3.4 wt%) and compared them with Pt/TiO2 (1.5 wt%). Photocatalytic activity was evaluated under UV-vis light irradiation using acetone degradation as a model reaction. Electrochemical impedance spectroscopy (EIS) and reactive oxygen species scavenging tests were employed to understand charge transfer and reaction mechanisms.

2：6 wt%, 1 wt%, 7 wt%, 4 wt%) and compared them with Pt/TiO2 (5 wt%). Photocatalytic activity was evaluated under UV-vis light irradiation using acetone degradation as a model reaction. Electrochemical impedance spectroscopy (EIS) and reactive oxygen species scavenging tests were employed to understand charge transfer and reaction mechanisms. Sample Selection and Data Sources:

2. Sample Selection and Data Sources: Commercial TiO2 (Degussa P25) was used as the base material. Acetone was chosen as the model VOC. Non-woven polypropylene fabric served as the substrate for catalyst deposition. Samples were synthesized and characterized using various analytical techniques.

3：List of Experimental Equipment and Materials:

TiO2 powders (Degussa P25), non-woven fabric, ammonium heptamolybdate tetrahydrate, carbon disulfide, silicon dioxide, chloroplatinic acid hexahydrate, ethanol, acetone, p-benzoquinone, toluene, ammonium polysulfide solution, barium sulfate, potassium iodide, coumarin. Equipment included X-ray diffractometer (Shimadzu XRD-6100), UV-vis spectrophotometer (Shimadzu UV-2450), ICP-AES (iCAP6300, Thermo), FESEM (FEI & Oxford Sirion 200), TEM (JEOL-JEM-2010), XPS (AXIS Ultra DLD Kratos), FTIR spectrometer (Tensor 27, Nicolet 6700), contact angle meter (KRUSS GmbH), electrochemical workstation (ZAHNER PP211), gas chromatograph (GC-7900 with FID), and a 300 W Xe arc lamp.

4：Experimental Procedures and Operational Workflow:

[Mo3S13]2? was prepared and immobilized on TiO2 via impregnation. The mixture was sonicated, stirred, centrifuged, washed, and dried. For fabric coating, suspensions were sprayed using an airbrush (U-STAR S-130) and dried. Photocatalytic tests involved milling catalysts with SiO2, placing them in a vessel with acetone under O2 atmosphere, irradiating with light, and sampling gas for GC analysis every 30 min. EIS and scavenger tests were conducted as per standard protocols.

5：Data Analysis Methods:

Data were analyzed using instruments' built-in software. CO2 production was quantified via GC. EIS data were interpreted to assess charge transfer resistance. Statistical analysis involved averaging measurements (e.g., contact angle from five measurements).