Superhydrophilic carbon nanofiber membrane with a hierarchically macro/meso porous structure for high performance solar steam generators

SiO2/MXene/Poly(tetrafluoroethylene)-Based Janus Membranes as Solar Absorbers for Solar Steam Generation

“…After 20 cycles, the solar thermal efficiency remained stable above 82.7% (Figure h), which indicates that the Janus structure evaporation device has good mechanical stability. It is worth noting that this evaporation performance (water evaporation rate) of the SiO 2 /MXene/HPTFE Janus membrane is comparable and superior to many recently reported two-dimensional and three-dimensional materials (Figure i). ,,,,,,,− At the same time, the photothermal membrane prepared using the commercial membrane-making machine has the characteristics of low cost, convenient transport, and high stability, and has a certain guiding effect on the actual production and use.…”

Bifunctional in situ polymerized nanocomposites for convective solar desalination and enhanced photo-thermoelectric power generation

“…4b. It is worth noting that ρ denotes the hot brine density, which contiguously varies in the chemical convection eqn (8). All the parameters during the numerical simulations were based on the experimentally measured values, e.g., surface temperature (42.8 °C) and salt concentrations of MnO 2 @PPy surface (10 g NaCl, 26 wt%) and stimulated seawater (3.5 wt%), as mentioned in earlier sections.…”

“…Carbon nanofiber-inspired membranes (CNF) have emerged as excellent solar absorbing materials with efficient solitary heat accumulation, super hydrophilicity, and enhanced solar to thermal conversion efficiencies. Gao et al 8 reported the preparation of a super hydrophilic CNF membrane with excellent corrosive resistance and excellent thermal management through its sideways water channel. The second significant solution involves chemical convection phenomena, which dissolves salt ions in a hot brine solution that flows through localized wick channels without any pressurization to conserve high temperatures under real seawater conditions.…”

“…The variables that appeared in eqn(8) are specified and it is worth noting that ρ presents the density of the liquid (salty water), which varies spatially…”

Electrospun Nanofiber-Based Membranes for Water Treatment

“…CNTs and its modified versions are considered ideal nanofillers because of their high thermal and mechanical stability and their light weight. Yan et al [ 94 ] prepared a hierarchical carbon nanofiber membrane by electrospinning PAN/TPA solution, followed by pre-oxidation and carbonization, to achieve high-performance desalination under sunlight, even in acid/alkali conditions. The ENMs performed well in interfacial solar desalination of 1.36 kgm −2 h −1 evaporation rate and >99.9% rejection of main ions in seawater with markedly improved surface roughness and surface wettability.…”