3D network structure and hydrophobic Ni-G-WO3-x solar-driven interfacial evaporator for highly efficient steam generation

Li, Zhenkui; Xu, Ruiqi; Song, Xiaojie; Yang, Enquan; Liu, Qiao; Sui, Yiling; Cui, Hongzhi

doi:10.1016/j.solmat.2020.110593

Cited by 24 publications

(10 citation statements)

References 55 publications

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“…The evaporation efficiency of a traditional solar desalination system is very low because the heat converted by the traditional solar absorber directly heats the bulk water, which reduces the evaporation rate and energy efficiency, due to the fact that the evaporation of water only takes place at the air–liquid interface. In recent years, solar desalination systems based on interfacial evaporation have gained more attention, as they can intensively supply heat to the air–liquid interface where vapor is generated and reduce the heat dissipation to the bulk water, thereby increasing the evaporation rate as well as the energy efficiency. − Generally, the interfacial evaporation system consists of three parts: a light absorption layer that is used for efficient solar light absorption and photothermal conversion, a supporting component that is used to support and isolate the heat transfer channel from the bulk water to reduce heat loss, and water supply channels that continuously transport water to the air–liquid evaporation interface (the hydrophilic light absorption layer is also an evaporation layer). − …”

Section: Introductionmentioning

confidence: 99%

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Chen

Luo

2021

ACS Appl. Mater. Interfaces

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Desalination of seawater through solar-driven interfacial evaporation is an efficient approach to solve the freshwater resource shortage problem. However, the salt formation and crystallization during interfacial evaporation limit the long-term stability of the solar evaporator. To further improve the salt-rejecting capability of the solar evaporator, we developed a porous framework photothermal microgroove-structured aerogel (PDA/PEI/ PPy@PI-MS MGA, pppMGA) through a combined freeze drying, laser engraving, and chemical polymerization technique. A multilevel water transport network consisting of a three-dimensional (3D) skeleton, a microgroove-structured water channel, and a cotton core is constructed, which can effectively improve the salt-rejecting capability of the aerogel. At the same time, the combination of the 3D porous microgroove structure of the pppMGA evaporative interface and the efficient light absorption capacity of PPy effectively increases the vapor−liquid evaporation area and the light absorption rate (98%). A high evaporation rate (∼1.38 kg m −2 h −1 ) and high photothermal conversion efficiency (∼93.04%) can be achieved on the pppMGA evaporator under 1 sun illumination, which can operate stably in high salt concentration (20%) water for 8 h. Even under 3 sun illumination and a 20 wt % NaCl solution, the pppMGA evaporator can operate stably without salt crystallization. Such a photothermal aerogel with high saltrejecting performance provides a new avenue for designing an interfacial evaporation system that can operate stably under high salt concentration conditions.

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Section: Introductionmentioning

confidence: 99%

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Chen

Luo

2021

ACS Appl. Mater. Interfaces

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“…[ 8 ] In addition to its application in seawater desalination, DSSG can also be used in various sewage treatment. [ 9 ] With the development of DSSG, many 3D solar steam generators have been extensively studied. Xu et al introduced various photothermal conversion materials coated on the surface of 3D melamine sponge with interfacial gelation method.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Hydrothermal‐Carbonized Sugarcane for Highly Efficient Direct Solar Steam Generation

et al. 2021

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Solar steam generation is an environmentally friendly water treatment method that produces clean water using solar energy. However, it is still a challenge to effectively prevent the performance deterioration when most photothermal conversion materials are used to evaporate high‐concentration salt‐containing wastewater or strong acid/alkali solution. Herein, a stable and effective solar evaporator is designed using natural sugarcane, where sucrose is simply dehydrated into carbon particles by hydrothermal reaction in sulfuric acid. With a honeycomb structure, it not only enables water transport capacity but also promotes sunlight absorption. Sulfuric acid hydrothermal carbonized sugarcane (SHCSC) can reach up to 95.36% solar absorption in a wide wavelength range (200–2500 nm) and a high evaporation rate of 2.32 kg m−2 h−1 under 1 sun illumination. More importantly, SHCSC has an excellent adsorption capacity with ion removal rate of 99.9% even under artificial wastewater containing 1000 mg L−1 of mixed metal ions. SHCSC also can perform efficiently and stably at a high evaporation rate above 2.2 kg m−2 h−1 in strong acidic or alkaline wastewater. These findings suggest that SHCSC can be potentially applied to the efficient harvest of clean water from the high‐concentration wastewater containing acid, alkali, and mixed metal ions.

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“…Also, the produced NH 4 + together with ammonium molybdate tetrahydrate can be used as an insertion guest ion for stabilizing 1T-MoS 2. − In Figure c, the nanosheets of MoS 2 are vertically aligned on the A-CFC surface and interconnected by a large number of nanovoids, which also facilitates the escape of water vapor. Additionally, the structure can reduce the light reflection and thus achieve high light absorption.…”

Section: Resultsmentioning

confidence: 99%

“…Actually, nature has provided an effective solution for evaporation . Water transports from the roots to the leaves through a limited path; then, the water vapor releases into the environment during the transpiration processes of plants. − Furthermore, the natural three-dimensional (3D) structure of the plant leads to the light absorption maximization at a wide range of incidence angles for one day and plays a vital part in heat loss, efficient water supply, steam passage, and solar desalination capacity. ,− …”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Artificial Transpiration Structure Based on 1T/2H-MoS₂/Activated Carbon Fiber Cloth for Solar Steam Generation

Yang

et al. 2022

ACS Appl. Mater. Interfaces

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The rise of solar steam generation is an effective strategy to mitigate clean water shortages. However, achieving further improvements in conversion efficiency and stability remains a challenge. Here, 1T/2H-MoS2 nanosheets were uniformly assembled on activated carbon fiber cloth (A-CFC) through a facial hydrothermal method, and a three-dimensional (3D)-artificial transpiration device (ATD) was prepared using the plant transpiration process. The combination of activated carbon fiber cloth and 1T/2H phase MoS2 exhibits high light absorption (∼97.5%), excellent mechanical stability, large evaporation area, and easy escape of vapor. Additionally, the 3D hollow cone of the MoS2/carbon fiber cloth can effectively reduce radiative and convective energy loss and then achieve the enhancement of energy collection from the environment. An outstanding evaporation rate of 1.61 kg·m–2·h–1 with an optimum conversion efficiency of 97% under one sun is reached. Based on the facile fabrication, excellent stability, and high solar conversion efficiency, this nature-inspired design of 3D 1T/2H-MoS2/A-CFC is expected to facilitate large-scale applications for seawater purification and desalination.

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3D network structure and hydrophobic Ni-G-WO3-x solar-driven interfacial evaporator for highly efficient steam generation

Cited by 24 publications

References 55 publications

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Multifunctional Hydrothermal‐Carbonized Sugarcane for Highly Efficient Direct Solar Steam Generation

Three-Dimensional Artificial Transpiration Structure Based on 1T/2H-MoS₂/Activated Carbon Fiber Cloth for Solar Steam Generation

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3D network structure and hydrophobic Ni-G-WO3-x solar-driven interfacial evaporator for highly efficient steam generation

Cited by 24 publications

References 55 publications

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Microgroove-Structured PDA/PEI/PPy@PI-MS Photothermal Aerogel with a Multilevel Water Transport Network for Highly Salt-Rejecting Solar-Driven Interfacial Evaporation

Multifunctional Hydrothermal‐Carbonized Sugarcane for Highly Efficient Direct Solar Steam Generation

Three-Dimensional Artificial Transpiration Structure Based on 1T/2H-MoS2/Activated Carbon Fiber Cloth for Solar Steam Generation

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Product

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Three-Dimensional Artificial Transpiration Structure Based on 1T/2H-MoS₂/Activated Carbon Fiber Cloth for Solar Steam Generation