1：Experimental Design and Method Selection:

The study employed a sol-gel method for catalyst preparation, with characterization techniques including XRD, TEM, EXAFS, CV, DRIFTS, and XPS to analyze structural properties, electron behavior, and photocatalytic oxidation processes.

2：Sample Selection and Data Sources:

TiO2 and Ce/TiO2 thin films with 2% and 8% cerium doping were prepared on ITO glass substrates. Data were sourced from laboratory experiments using synthesized catalysts.

3：List of Experimental Equipment and Materials:

Equipment included Philips X'Pert-MPD diffractometer, LaB6 Hitachi H-8100 TEM, VG Scientific 110 energy analyzer, IM6 Electrochemical Workstation, Bruker Tensor 27 spectrometer, and various lamps for irradiation. Materials included Titanium(IV) bis(ethylacetoacetato)diisopropoxide, cerium(III) nitrate hexahydrate, ITO glass, sodium sulfate, and thiophene.

4：Experimental Procedures and Operational Workflow:

Catalysts were prepared via sol-gel, coated on ITO, calcined, and characterized. Photocatalytic oxidation was monitored in situ using DRIFTS under UV irradiation in an oxygen atmosphere at 288 K.

5：Data Analysis Methods:

Data were analyzed using EXAFSPAK software for EXAFS, Advantage software for XPS deconvolution, and standard techniques for XRD, TEM, CV, and IR spectroscopy.