Electrically heatable carbon scaffold accommodated monolithic metal–organic frameworks for energy-efficient atmospheric water harvesting

An overview of atmospheric water harvesting methods, the inevitable path of the future in water supply

“…Almost 100% of the adsorbed water condensed on the inner wall of the system within 15 minutes, which indicates the fast adsorption kinetics. Tao et al 150 focused on the possibility of complete water removal and increasing the kinetics of removal in MOFs, was able to produce more water with less energy consumption (1.57 kW h L H 2 O −1 ). They were able to produce 1.95 L H 2 O kg CAS −1 day −1 of water at a relative humidity of 28 to 38%.…”

Advances in harvesting water and energy from ubiquitous atmospheric moisture

“…Consequently, the device can deliver water of 1.3 L kg −1 day −1 in an arid environment (32% RH), and at extremely low RH (10% RH), the produced water can be 0.7 L kg −1 day −1 . Besides the heating strips, other electrical heating materials can also be employed, for example, carbon scaffolds, 186 carbon fibers, 187 and metal foam. 188 Commonly, these electrical heating materials also work as a backbone to support sorbents, imparting an intimate contact and hence localized electrical heating at the heater/sorbent interface.…”

“…At 28–32% RH, a water productivity of 1.95 L kg −1 day −1 can be reached. 186 At 60–88% RH, the water harvesting cycles can be performed eight times over 24 hours and generate water of 2.2 L kg −1 day −1 . 188…”

Synergistically Enabling Fast‐Cycling and High‐Yield Atmospheric Water Harvesting with Plasma‐Treated Magnetic Flower‐Like Porous Carbons

“…[ 5 , 6 ] In contrast, sorption‐based AWH with microporous sorbents has attracted particular interest due to their excellent atmospheric water uptake capacities at low relative humidity (RH), wide range of geographic applicability, and low energy consumption for sorbent regenerations. [ 7 , 8 , 9 ]…”

“…[5,6] In contrast, sorption-based AWH with DOI: 10.1002/advs.202204840 microporous sorbents has attracted particular interest due to their excellent atmospheric water uptake capacities at low relative humidity (RH), wide range of geographic applicability, and low energy consumption for sorbent regenerations. [7][8][9] A sorption-based AWH mainly involves the use of sorbents to extract water from ambient air and a subsequent heat-driven water desorption process. To achieve a highyield AWH, one of the foremost requirements is to enable a fast water adsorptiondesorption cycling of the sorbents, which usually requires the sorbents to have rapid atmospheric water adsorption and desorption kinetics.…”