1：Experimental Design and Method Selection:

The study involved preparing PANIs with different oxidation states (ES, EB, LB, PB) via oxidative polymerization and redox reactions. Photocatalytic performance was evaluated for benzylamine oxidation under visible light, with a focus on PANI-ES due to its high activity. Theoretical calculations and various characterization techniques were used to understand the mechanism.

2：Sample Selection and Data Sources:

PANI samples were synthesized using aniline, HCl, ammonium peroxydisulfate, and other chemicals from Aladdin. Benzylamine and its derivatives were used as substrates for photocatalytic reactions.

3：List of Experimental Equipment and Materials:

Instruments included SEM (JSM-7001F), BET surface area analyzer (TriStar II 3020), XRD (MiniFlex II), FTIR (Nicolet Magna-IR 550-II), XPS (Thermo ESCALAB 250), conductivity measurement system (RTS-9 4-point probe), EPR spectrometer (Bruker EMXPLUS10/12), UV-vis spectrometer (Shimadzu UV-3600), cyclic voltammetry (Chenhua CHI600E), GC (Shimadzu GC-2014C), NMR (Bruker AV-III 400 MHz), and GC-MS (Bruker SCION SQ 456). Chemicals were from Aladdin.

4：6). Chemicals were from Aladdin. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: PANIs were prepared through specific polymerization and treatment steps. Photocatalytic reactions were conducted in acetonitrile with catalysts under oxygen atmosphere and LED light irradiation. Products were analyzed by GC, NMR, and MS. Characterization involved SEM, BET, XRD, FTIR, XPS, EPR, UV-vis, and cyclic voltammetry.

5：Data Analysis Methods:

Data were analyzed using Gaussian 09 for theoretical calculations, with statistical methods for kinetic analysis and band gap calculations. Conversion and selectivity were determined from GC-FID.