A waterbomb origami tower for convertible photothermal evaporation

Abstract

Configured with a rapid evaporation rate and a high photothermal conversion efficiency, solar-driven interfacial evaporation displays considerable promise in seawater desalination. Inspired by the versatility and deployability of origami-based structures,...

Hydrothermally Modified 3D Porous Loofah Sponges with MoS2 Sheets and Carbon Particles for Efficient Solar Steam Generation and Seawater Desalination

“…To explore the relationship between the surface temperature and the evaporator height, the top-surface and sidewall temperatures of the HLMC- x evaporators during the solar-driven evaporation process were recorded by an infrared camera (Figure c,d). Due to the cooling effect resulting from water evaporation, the top surfaces and sidewalls of HLMC- x can possess lower temperatures than the surrounding temperature, leading to thermal energy gain from the environment in the forms of thermal radiation and convection. ,, The net environmental energy gained by HLMC- x can be calculated using eq () E normale = prefix− A 1 ε σ ( T 1 4 − T e 4 ) − A 2 ε σ ( T 2 4 − T e 4 ) − A 1 h ( T 1 − T e ) − A 2 h ( T 2 − T e ) − E normalW where E e is the net energy gained from the environment and A 1 and A 2 are the top-surface area and sidewall surface area of the solar-driven evaporator, respectively. T 1 and T 2 are the top-surface temperature and sidewall temperature, respectively.…”

“…Compared with two-dimensional (2D) solar-driven water evaporators, the sidewalls of 3D evaporators usually exhibit a cold evaporation behavior so that the sidewalls present lower temperatures than the surroundings and hence can gain additional energy from the environment during the solar-driven water evaporation . In addition, the water evaporation efficiency can be improved by designing 3D evaporators with increased light refraction and enlarged evaporation surfaces …”

A narrow-bandgap photothermal material based on a donor–acceptor structure for the solar–thermal conversion application

“…In recent years, solar interfacial evaporation technology has become one of the emerging research hotspots for sustainable desalination technologies due to its green, energy-saving and low-cost advantages. [2][3][4][5][6] The solar interfacial evaporator is the core of solar interfacial evaporation technology, and mainly consists of a photothermal layer for photothermal conversion and a support carrier for water transmission. By oating an evaporator with a porous structure on the water surface, a local thermal zone is formed at the water-air interface for photothermal conversion, while the porous structure inside the evaporator continuously supplies water to the top thermal zone through capillarity, thus causing evaporation.…”

Co-Assembled WS2 Nanosheets/Chitosan Aerogels with Oriented Micro-Channels for Efficient and Sustainable Solar Steam Generation

“…5 Recently, the solar steam generation strategy, which converts light energy directly into heat energy and evaporates water at the evaporation interfaces with the help of photothermal materials, has been considered as one of the most eco-friendly and sustainable methods for freshwater harvesting ascribing to the abundant and renewable source of clean solar energy, as well as the concentrated and tunable heat management and efficient evaporation performance. 6,7 Photothermal materials like carbon-based materials (e.g., graphene and carbon nanotubes), 8,9 inorganic semiconductor materials (e.g., Ti 2 O 3 and Cu 7 S 4 ), 10 organic polymers (e.g., polydopamine and polypyrrole), 11,12 and metallic-based plasmonic nanoparticles (e.g., gold and aluminum nanoparticles) 13 have been successfully used in solar steam generation, nevertheless, which are hindered in practical applications due to their complex preparation procedures and high costs. Transition metal disulfides (TMDs; e.g., WS 2 and MoS 2 ) are emerging photothermal materials that possess strong light absorption in the near-infrared region.…”

“…Photothermal materials like carbon-based materials (e.g., graphene and carbon nanotubes), , inorganic semiconductor materials (e.g., Ti 2 O 3 and Cu 7 S 4 ), organic polymers (e.g., polydopamine and polypyrrole), , and metallic-based plasmonic nanoparticles (e.g., gold and aluminum nanoparticles) have been successfully used in solar steam generation, nevertheless, which are hindered in practical applications due to their complex preparation procedures and high costs. Transition metal disulfides (TMDs; e.g., WS 2 and MoS 2 ) are emerging photothermal materials that possess strong light absorption in the near-infrared region .…”