A three-dimensional arched solar evaporator based on hydrophilic photothermal fibers inspired by hair for eliminating salt accumulation with desalination application

Abstract

Solar desalination has been considered a sustainable method to obtain fresh water. However, its extended application is limited by low solar evaporation efficiency, poor salt rejection and durability. Herein, inspired...

A salt-resistant solar evaporator with organic diradicaloids as photothermal materials for efficient and persistent desalination

“…2a), heat is generated on the surface of the evaporator under sunlight irradiation, and the water is transported through the fabric channel due to the capillary effect, which ensures excellent efficient water evaporation without salt accumulation. 34 The surface wettability of the cotton fabric has been measured, and the result shows that the contact angle of water is zero for the cotton fabric in Fig. 2b, thus conrming the remarkable hydrophilicity of the solar evaporator.…”

Roof tile-inspired 3D arch evaporators based on Ti3C2Tx/MoSe2 photothermal nanocomposites for efficient solar desalination

“…Under the dual action of capillary action and Marangoni convection, the rate of uid transport is accelerated, which ensures the constant replenishment and circulation of water. 52,53 Through the contact angle measurement, the modied carbon cloth shows superhydrophilicity (Fig. S10 †).…”

Quasi-waffle solar distiller for durable desalination of seawater

“…Specifically, the Marangoni flow can be induced by the gradients of concentration (i.e., solute-capillary effect) or temperature (i.e., thermal-capillary effect), because the surface tension depends on both factors. The Marangoni effect-driven convection has been applied to salt-rejective evaporators, e.g., the cone-shaped evaporator (25), the scrip-shaped seawater supply layer (29,30), the bridge-arch-shaped evaporator (31)(32)(33), and the honeycomb-shaped evaporator (34). They are driven by either the concentration gradient (29,30,32,34) or the temperature gradient (25,31,33).…”

“…The Marangoni effect–driven convection has been applied to salt-rejective evaporators, e.g., the cone-shaped evaporator ( 25 ), the scrip-shaped seawater supply layer ( 29 , 30 ), the bridge-arch–shaped evaporator ( 31 – 33 ), and the honeycomb-shaped evaporator ( 34 ). They are driven by either the concentration gradient ( 29 , 30 , 32 , 34 ) or the temperature gradient ( 25 , 31 , 33 ). Despite these progresses, several challenges remain.…”