1：Experimental Design and Method Selection

The study involves the synthesis of BiOCl-Ag-E with Ag loaded on the edge side of BiOCl to utilize the plasmonic effect and the highly active (001) facet of BiOCl. The methodology includes hydrothermal synthesis, characterization techniques, and photocatalytic performance evaluation.

2：Sample Selection and Data Sources

Bismuth (III) nitrate pentahydrate, sodium chloride, silver nitrate, polyvinylpyrrolidone, and hydrazine hydrate were used as precursors. The samples were characterized using XRD, SEM, TEM, EELS, Raman spectroscopy, UV-vis diffuse reflectance spectroscopy, and XPS.

3：List of Experimental Equipment and Materials

Teflon-lined stainless autoclave, X-ray powder diffractometer (GBC MMA), scanning electron microscope (JEOL JSM-7500), transmission electron microscope (JEOL JEM-2010), electron energy loss spectroscopy (JEOL ARM-200F), Raman spectroscopy (Nanofinder system), UV-vis diffuse reflectance spectrometer (Shimadzu UV-3600), X-ray photoelectron spectroscopy (Beamline 4W9B), ESR Spectrometer (JES-FA200), electrochemical analyser (VSP-300).

4：Experimental Procedures and Operational Workflow

The synthesis involved hydrothermal reactions, centrifugation, washing, and drying. Characterization was performed using various spectroscopic and microscopic techniques. Photocatalytic performance was evaluated through photocurrent response, active species detection, and CO2 photoreduction.

5：Data Analysis Methods

Data analysis included XRD pattern analysis, SEM and TEM image analysis, EELS and Raman spectroscopy data interpretation, UV-vis absorption spectra analysis, and electrochemical data evaluation.