Novel strategy of highly efficient solar-driven water evaporation using MWCNTs-ZrO2-Ni@CQDs composites as photothermal materials

Extremely high-efficiency solar steam generation, robust and scalable photothermal evaporator based on ZIF-67@MXene/rGO decorated rock wool

“…[5][6][7] In general, the working principle of a solar steam generation system consists of: water adsorption for a continuous water supply; and photothermal absorber for converting sunlight into thermal energy, generating vapor, where the condensed water is collected as freshwater. [8][9][10] There are ve main key factors for an ideal photothermal evaporator: (i) full spectral range of light absorption, (ii) heat localization, (iii) good wettability of porous structure, (iv) excellent chemical and mechanical stability, (iv) salt-resistant property to avoid accumulation of salt. 11,12 Although extensive progress has been made using several device structures, the low evaporation rate (<2 kg m −2 h −1 ) and salt accumulation cause severe degradation of the evaporation rate, thus limiting the photothermal evaporator performance.…”

Tuning surface wettability of MoS2 to enhance solar‐driven evaporation rates

“…The water evaporation rate ( υ ) and efficiency ( η ) were calculated using the following equations 29,30 where (kg) is the water mass change, (h) is the irradiation time, (3.142 × 10 −4 m 2 ) is the surface area of the solar absorber material, and and (kg m −2 h −1 ) are the water evaporation rates through MoS 2 /ALP under illumination and under dark conditions, respectively.…”

“…The water evaporation rate (υ) and efficiency (η) were calculated using the following equations. 29,30…”

Review of the progress of solar-driven interfacial water evaporation (SIWE) toward a practical approach

“…67 Recently, Zhang et al presented a highly effective solar-absorber composite material based on tetrapyridylporphyrin, which produced thermoelectric power at a rate of about 60 mV and water evaporation at a rate of ∼0.69 kg m −2 h −1 under 1 kW m −2 of solar radiation. 68 Similar to this, integrated cellulose-based composites, 69 novel photothermal materials based on the combination of ZrO 2 nanoparticles (NPs) with Ni-doped carbon quantum dots (Ni@CQDs) and multi-walled carbon nanotubes (MWCNTs) coated on a melamine foam (MF) surface, 70 composite hydrogel (GO/SA PAM-PVA hydrogel), 71 and porous reduced graphene-agarose spherical composite 72 -based solar absorbers were reported with excellent evaporation efficiency and advanced functionalities. However, due to the complex nature and circuitous synthesis, the stability and scalability of these photothermal materials remain challenging in their successful functioning in future investigations.…”