More from less: improving solar steam generation by selectively removing a portion of evaporation surface

Science Bulletin, Journal Year: 2022, Volume and Issue: 67(15), P. 1572 - 1580

Published: July 4, 2022

Using minimal photothermal material to achieve maximum evaporation rate is extremely important for practical applications of interfacial solar technology. In this work, we found that with the increase in size surfaces, decreased. Both experimental and numerical simulation results confirmed when surface increased, middle portion acted as a "dead zone" little contribution water evaporation. Based on this, was selectively removed, counterintuitively, both vapor output were increased due re-configured enhanced convection above entire surface. As such, work developed an strategy higher vapour while using less material.

Language: Английский

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Water Activation in Solar‐Powered Vapor Generation

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(47)

Published: July 3, 2023

Abstract Solar‐powered vapor evaporation (SVG), based on the liquid‐gas phase conversion concept using solar energy, has been given close attention as a promising technology to address global water shortage. At molecular level, molecules escaping from liquid should overcome attraction of surface layer evaporate. For this reason, it is better reduce energy required for by breaking smaller number hydrogen bonds or forming weak ensure efficient and convenient production. Many novel evaporator materials effective activation strategies have proposed stimulate rapid steam production surpass theoretical thermal limit. However, an in‐depth understanding phase/enthalpy change process unclear. In review, summary analyses vaporization enthalpy, general calculations, characterization methods provided. Various mechanisms are also outlined enthalpy in evaporators. Moreover, unsolved issues associated with critically discussed provide direction future research. Meanwhile, significant pioneering developments made SVG highlighted, hoping relatively entire chain more scholars who just stepping into field.

Language: Английский

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Reviewing wood-based solar-driven interfacial evaporators for desalination

Water Research, Journal Year: 2022, Volume and Issue: 223, P. 119011 - 119011

Published: Aug. 22, 2022

Solar‒driven interfacial water evaporation is a convenient and efficient strategy for harvesting solar energy desalinating seawater. However, the design fabrication of evaporators still challenge reliable practical applications. Wood-based solar-driven emerge as promising environmentally friendly approach it provides renewable porous structures. In recent years, surface modifications innovative structural designs to prepare high performance wood-based widely explored. this review, we firstly describe superiority wood evaporators, including pore structure, chemical structure thermal insulation. Secondly, summarize developments in from carbonization, decoration with photothermal materials, bulk modification design, discuss aspects transportation capacity, conductivity efficiency. Finally, based on these previous results analysis, highlight remaining challenges potential future directions, selection high-efficient heat mass transfer mechanism large-scale production at low cost.

Language: Английский

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2D MoN_1.2‐rGO Stacked Heterostructures Enabled Water State Modification for Highly Efficient Interfacial Solar Evaporation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)

Published: March 14, 2023

Abstract Improving interfacial solar evaporation performance is crucial for the practical application of this technology in solar‐driven seawater desalination. Lowering enthalpy one most promising and effective strategies to significantly improve rate. In study, a new pathway lower vaporization by introducing heterogeneous interactions between hydrophilic hybrid materials water molecules developed. 2D MoN 1.2 nanosheets are synthesized integrated with rGO form stacked ‐rGO heterostructures massive junction interfaces evaporation. Molecular dynamics simulation confirms that atomic thick simultaneously interact molecules, while remarkably different. These cause an imbalanced state, which easily breaks hydrogen bonds leading dramatically lowered improved rate (2.6 kg m −2 h −1 ). This study provides strategy designing 2D‐2D regulate evaporate clean production.

Language: Английский

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Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

Deleted Journal, Journal Year: 2022, Volume and Issue: 1, P. e9120014 - e9120014

Published: June 9, 2022

With the development of industry, water pollution and shortage have become serious global problems. Owing to abundance seawater storage on earth, efficient solar-driven evaporation is a promising approach relieve freshwater shortage. The has attracted tremendous attention due its potential application in desalination wastewater treatment fields. Also, efficiency can be enhanced by designing both solar absorbers structures. Up now, many strategies been explored achieve high efficiency, mainly including selection photothermal conversion materials structure optimization. In this review, absorbers, structural designs, energy management are proposed as keys for performance systems. We report four kinds based different mechanisms, substrate methods purpose efficiency. And we also systematically investigate available salt-rejections desalination. This review aims summarize current systems provide insights into materials, management. Finally, propose perspectives salt-rejection technologies

Language: Английский

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Advances in photothermal regulation strategies: from efficient solar heating to daytime passive cooling

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(21), P. 7389 - 7460

Published: Jan. 1, 2023

This review provides a comprehensive overview of photothermal regulation strategies from fundamentals, criteria, and advanced materials to emerging applications.

Language: Английский

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A Multiscale Porous 3D‐Fabric Evaporator with Vertically Aligned Yarns Enables Ultra‐Efficient and Continuous Water Desalination

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(40)

Published: Aug. 3, 2022

Abstract Solar steam generation has emerged as an environment‐friendly and promising strategy to overcome the freshwater energy crisis. However, simultaneously attaining satisfied evaporation rate, durability utilization in a single system is challengeable, but crucial practical application. Herein, inspired by carpet weaving technique benefiting from “fiber–yarn–fabric” hierarchical structures, 3D fabric evaporator with vertical hemp‐yarn arrays innovatively constructed, featuring combined structure of multiscale pores tunable spacing between adjacent fibers or yarns, vertically aligned architecture coated superhydrophilic MXene‐sandwiched layer adjustable side height/areas. These structures work cooperatively, surprisingly achieving integrated functions excellent light capture, balanced area vapor escape space, additional adsorption environment salt exchange along micro/macro pores. Consequently, exhibits outstanding rate (3.95 kg m −2 h −1 under one‐sun illumination) extremely high outdoor (47.04 for 8 h), accompanied salt‐resistance (continuous 120 14% brine without accumulation), anti‐oilfouling anti‐bacterial (efficiency over 99.9%) performances. Finally, through rationally assembling multi‐function modules condenser, all‐in‐one “desalination–thermoelectricity–irrigation” platform built, realizing maximum condensation enthalpy.

Language: Английский

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Solar-driven interfacial water evaporation for wastewater purification: Recent advances and challenges

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 477, P. 147158 - 147158

Published: Nov. 4, 2023

Language: Английский

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Advances of 2D‐Enabled Photothermal Materials in Hybrid Solar‐Driven Interfacial Evaporation Systems toward Water‐Fuel‐Energy Crisis

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Sept. 4, 2023

Abstract The development of a multi‐functional solar‐driven interfacial evaporation (SDIE) system remains significant challenge for its large‐scale applications. By taking advantage high surface area, excellent young's moduli, anchoring/coupling capability, large absorption surface, strong in the broadband solar spectrum, and efficient photothermal conversion efficiencies 2D emerging materials (Xenes, Mxenes, etc.), hybrid SDIEs are developed to increase use energy beyond water production. This work aims offer systematic review recent advancement except graphene their role stimulate both fundamental applied research on utilizing underutilized auxiliary sources future integrated water, energy, environmental systems. For this purpose, first, most progress is discussed, mainly including Xenes, MXenes, TMDs‐inspired SDIEs. Second, structural optimization strategies modulation intrinsic performances highlighted. Third, cutting‐edge conceptual designs many applications such as thermoelectricity, salt recovery, hydrogen production broadly presented. Lastly, current challenges perspectives structures also mentioned.

Language: Английский

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Salt isolation from waste brine enabled by interfacial solar evaporation with zero liquid discharge

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(27), P. 14470 - 14478

Published: Jan. 1, 2022

An affordable and easy-to-fabricate solar evaporation-based crystallizer (SEC) was developed to implement interfacial brine evaporation towards zero liquid discharge (ZLD).

Language: Английский

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