Retraction: A Solar Collector-Based Atmospheric Water Harvesting Device Integrated with Silica Gel Adsorbents

In this study, an integrated solar collector–silica gel air-water harvesting de-vice was designed and constructed. The system operates on the adsorption–desorption cycle driven by a solar vacuum tube collector, enabling continuous water extraction from ambient air through alternating adsorption bed opera-tion. The device consists of an adsorption bed unit, a solar thermal unit, and a condensation unit, featuring a compact structure and high energy utilization efficiency. Experiments were conducted using color-indicating silica gel parti-cles (3–5 mm) as the adsorbent, and a prototype device was tested for adsorp-tion–desorption–condensation performance. Results show that under ambi-ent relative humidity conditions of 25%–85%, the silica gel adsorption bed, after 22 h of adsorption, initiated desorption at 90 ℃ and sustained stable op-eration at 110 ℃ for 2 h, yielding 51 g of fresh water. These findings confirm the effective coupling between the silica gel adsorbent and the solar-driven de-sorption strategy, providing an experimental basis and technical support for subsequent modular expansion, integrated operation, and engineering applica-tions.