Isolating solar harvesting and water evaporation of salt-free Janus steam generator for concentration-independent seawater desalination

Recent Advances and Challenges of Metal‐Based Materials for Solar Steam Generation

“…Some people adopted belt‐shaped water conveyance paths. [ 92,110,170,198b,273 ] Yang et al. [ 198b ] deposited photothermal materials on a filter fiber paper and then placed them on a piece of cotton cloth with two strips inserted into the water through an insulating foam, where the cotton cloth could provide a continuous supply of water.…”

Salt-tolerant, scalable Janus fabric evaporators for desalination and multi-species wastewater purification

“…This indicates that the prepared SA/ PPy/C@CF evaporators exhibit good stability and salt resistance for desalination, based on the principle that the top hydrophobic layer of the Janus fabric inhibits the transport of salt-laden seawater to the upper surface, and the resulting vapor diffuses rapidly directly from between the pores of the fabric. 49,50 Changes in the Na + , Mg 2+ , K + , and Ca 2+ concentrations before and after desalination were measured by ICP-MS. The result shows that the concentrations of the four ions decreased from 10672.05, 1854.00, 681.45 and 461.55 mg L −1 to 0.34, 0.04, 0.17 and 0.05 mg L −1 , respectively (Fig.…”

Guar Gum-Based Macroporous Hygroscopic Polymer for Efficient Atmospheric Water Harvesting

“…Solar-driven atmospheric water harvesting technology (SAWH) provides a sustainable and environmentally friendly method to generate fresh water, regardless of geographical location . In recent years, the technology has received increasing attention from researchers aiming to address the increasingly severe global water scarcity crisis. − SAWH has been inspired by solar interface evaporation − and passive radiative cooling, − which has been rapidly developed. Its basic principle is to use hygroscopic materials to spontaneously collect atmosphere moisture and store it inside the materials, effectively use sunlight to generate heat and as a driving force to promote the release of water vapor in the hygroscopic material, and finally convert the water vapor into droplets through direct condensation or other technical means to complete the collection of atmosphere moisture. , With the rapid development of SAWH, it has been gradually applied to agricultural irrigation − and human life. , …”