1：Experimental Design and Method Selection:

The study used cyclic voltammetry (CV) to investigate the photo-electrochemical properties of silver nanoparticles in mesoporous titania films under different light wavelengths. The self-assembly block copolymer method was employed for synthesis, and CV was performed with a three-electrode cell.

2：Sample Selection and Data Sources:

Mesoporous titania films were synthesized on FTO substrates, and silver nanoparticles were grown inside the films. Reference samples included silver NPs in silica, silver ions in solution, and bimetallic silver-gold nanoparticles for comparison.

3：List of Experimental Equipment and Materials:

Equipment included a Zeiss Merlin Compact SEM for imaging, a TOPCON TEM, a Safas UVmc spectrometer for UV-visible absorption, a BelsorpMini for nitrogen adsorption/desorption, and a Volta lab PST006 Potentiostat for electrochemical measurements. Materials included Pluronic P-123, Pluronic F-127, tetrabutylorthotitanate, tetraethoxysilane, silver nitrate, HAuCl4, HCl, formaldehyde, and FTO substrates.

4：Experimental Procedures and Operational Workflow:

Films were deposited by dip-coating, aged, calcined, and silver NPs were formed by immersion in silver nitrate and reduction with formaldehyde. CV experiments were conducted with potential sweeps between -0.5 and +0.5 V at 100 mV/s, with light irradiation from LEDs at 455, 530, and 660 nm.

5：5 and +5 V at 100 mV/s, with light irradiation from LEDs at 455, 530, and 660 nm. Data Analysis Methods:

5. Data Analysis Methods: Data were analyzed using SEM, TEM, UV-visible spectroscopy, nitrogen adsorption isotherms (BJH and BET methods), and CV peak potential measurements.