1：Experimental Design and Method Selection:

The study uses a vapor-solid reaction method involving thermal reduction of CS2 vapor by Mg powder at 580°C to synthesize mesoporous carbon nanosheet frameworks. This method is chosen for its scalability, high yield, and low cost.

2：Sample Selection and Data Sources:

Precursors include Mg powder and NaCl powder blended in a 1:5 weight ratio, with CS2 vapor as the carbon source. The synthesized carbon material is purified and characterized.

3：List of Experimental Equipment and Materials:

Equipment includes a tube furnace, alumina boats, glass container for CS2, water bath, Ar flow system, UV-vis spectrometer with integration sphere, SEM (Zeiss Supra55), TEM (FEI Tecnai F30), XPS (Thermo Scientific Escalab 250Xi), BET apparatus (Micromeritics ASAP 2460), IR camera (Fluke TiX640), electronic mass balance (OHRUS CP214), solar simulator (CHF-XM500 Xenon lamp), and ICP-MS (PerkinElmer NexION 300D). Materials include Mg powder, NaCl, CS2, deionized water, HCl, HNO3, spunlace nonwoven fabric, polystyrene foam, and various chemicals for purification and testing.

4：Experimental Procedures and Operational Workflow:

Mg and NaCl powders are blended, loaded into alumina boats, and reacted with CS2 vapor at 580°C for 90 min. The product is washed with DI water and HCl, treated with HNO3, filtered, and freeze-dried. The carbon material is dispersed in water, blade-coated onto fabric, and used in solar steam generation tests under simulated sunlight at various intensities. Weight loss, surface temperature, and other parameters are monitored.

5：Data Analysis Methods:

Data analysis involves calculating solar-to-vapor efficiency, specific surface area via BET, pore size distribution using BJH model, optical absorption, and composition analysis via XPS and ICP-MS.