The promising solar‐powered water purification based on graphene functional architectures

Hu, Yajie; Yao, Houze; Liao, Qihua; Lin, Tengyu; Cheng, Huhu; Qu, Liangti

doi:10.1002/eom2.12205

Cited by 24 publications

(18 citation statements)

References 155 publications

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“…Several strategies have been proposed to improve the efficiency of SSG by engineering photothermal materials to have strong light absorption over a wide-frequency band (0.2–3 μm) and high photothermal conversion efficiency, as well as designing a substrate to have good thermal insulation to avoid excessive heat loss and capability to supply water to hot regions. They include chemical regulation ,,− and structural engineering ,− of the photothermal materials as well as solar evaporator design. ,− Chemical regulation of photothermal materials is carried out by introducing different elements or functional groups into the primary photothermal material or compositing two or more photothermal materials. Structural engineering includes assembling photothermal materials to specific architecture for the efficient use of the materials in the solar steam generation system.…”

Section: Solar Thermal Conversion Materialsmentioning

confidence: 99%

“…Most of the review papers published recently discussed the designs of an SSG system and identified that the photothermal effect, water supply, and thermal management are the three key factors for an efficient SSG system for future development. Ibrahim et al, Hu et al, and Guo et al reviewed the advancement of the three main aspects of biomass-based, graphene-based, and hydrogel-based, respectively, photothermal materials for an SSG system. This review aims to provide a comprehensive and critical overview of an SSG system with a focus on designs and engineering of materials for enhanced light-to-heat conversion in the application of solar water purification.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is nearly impossible to find a single material that matches all the requirements for an efficient SSG system. Despite the large number of reviews on solar steam generation, ,− there has been limited work done summarizing works on an integrated method to engineering the materials for use in the design of solar evaporator for solar water evaporation. Most of the review papers published recently discussed the designs of an SSG system and identified that the photothermal effect, water supply, and thermal management are the three key factors for an efficient SSG system for future development.…”

Section: Introductionmentioning

confidence: 99%

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Engineering Materials to Enhance Light-to-Heat Conversion for Efficient Solar Water Purification

Setyawan

Juliananda

Widiyastuti

2022

Ind. Eng. Chem. Res.

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Water scarcity has become one of the most prevalent problems afflicting people throughout the world and is expected to grow worse in the future due limited resources and increasing demand. This problem calls out for an urgent need to develop inexpensive, stand-alone desalination and water purification technologies that can adopt water resource distribution, water quality conditions, economic status, and developing levels of communities. Solar energy is abundantly available and has become one of the most promising emerging strategies in sustainable water treatment technologies. In this review paper, we highlight the recent progress of solar-driven desalination and water purification technologies for clean water production. We begin by introducing the fundamental concepts of solar radiation, solar thermal conversion, and heat localization. Then, we review the key components of solar steam generation including solar-thermal conversion materials, water pathways, and heat insulators and the strategies to promote efficient solar-to-vapor conversion in terms of chemical regulation, structural engineering, and heat management to maximize solar absorption and to minimize heat loss. Next, we discuss an efficient design of a solar steam generation device using an integrated approach that accounts for the performance of photothermal materials, heat losses, and water supply with respect to the hot evaporation region. Last, existing challenges and future opportunities in both fundamental studies and practical implementations of solar steam generation for water purification are discussed.

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Section: Solar Thermal Conversion Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Engineering Materials to Enhance Light-to-Heat Conversion for Efficient Solar Water Purification

Setyawan

Juliananda

Widiyastuti

2022

Ind. Eng. Chem. Res.

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“…Compared with traditional solar distillation, ISSG cuts down the heat loss via localizing the solar heat near the surface of the evaporator. Up to now, numerous materials including metal nanoparticles 3 – 5 , carbonaceous materials 6 – 8 , two-dimensional (2D) materials 7 , 9 – 11 , hydrogels 12 – 14 were explored as evaporators. Meanwhile, many effective methods have also been proposed to enhance the evaporation rate, concerning three-dimensional (3D) ISSG 15 – 20 , multistage evaporation 21 – 24 , water supply control 25 , 26 , synergy with chemical phase change 27 – 29 and electrothermal effect 30 , 31 , reduction of evaporation enthalpy 12 , 13 , 32 and so on.…”

Section: Introductionmentioning

confidence: 99%

A reconfigurable and magnetically responsive assembly for dynamic solar steam generation

et al. 2022

Nat Commun

Self Cite

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Interfacial solar vapor generation is a promising technique to efficiently get fresh water from seawater or effluent. However, for the traditional static evaporation models, further performance improvement has encountered bottlenecks due to the lack of dynamic management and self-regulation on the evolving water movement and phase change in the evaporation process. Here, a reconfigurable and magnetically responsive evaporator with conic arrays is developed through the controllable and reversible assembly of graphene wrapped Fe3O4 nanoparticles. Different from the traditional structure-rigid evaporation architecture, the deformable and dynamic assemblies could reconfigure themselves both at macroscopic and microscopic scales in response to the variable magnetic field. Thus, the internal water transportation and external vapor diffusion are greatly promoted simultaneously, leading to a 23% higher evaporation rate than that of static counterparts. Further, well-designed hierarchical assembly and dynamic evaporation system can boost the evaporation rate to a record high level of 5.9 kg m−2 h−1. This proof-of-concept work demonstrates a new direction for development of high performance water evaporation system with the ability of dynamic reconfiguration and reassembly.

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“…Large amounts of oily wastewater discharged from our daily life, industries, or spill accidents has caused great harm to the environment, ecology, and even human health. [1][2][3][4][5] Such pollution has come up an urgent need to treat oily wastewater properly. In general, oily wastewater can be divided into immiscible oil/water mixtures and emulsions.…”

mentioning

confidence: 99%

Durable, flexible, and super‐hydrophobic wood membrane with nanopore by molecular cross‐linking for efficient separation of stabilized water/oil emulsions

Cai

et al. 2022

EcoMat

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Large amount of oily wastewater discharged from domestic sources and industrial has caused lots of pollution to our surrounding. Thus, searching effective and eco-friendly ways for separation of stabilized oil/water emulsions is urgent and highly desirable. Among various methods, membrane with special wettability is an ideal choice for the efficient treatment of oil/water emulsions owing to its low energy consumption and cost. However, it remains a great challenge to develop super-wettable membranes using green and inexpensive materials to realize durability, easy fabrication and scale-up. To address this issue, a highly flexible, durable, robust, and super-hydrophobic polydivinylbenzene (PDVB)-wood membrane with hydrophobic-nanopores is developed by the surface coating of cross-linked PDVB on the porous wood. The as-produced PDVB-wood membrane shows excellent flexibility, durability, chemical resistance and possesses above 99.98% separation efficiency for surfactant-stabilized water-in-oil emulsions. Furthermore, the PDVB-wood membrane also performs excellent recyclability with separation efficiency up to 99.98% after 20 separation cycles. The synergistic effect of the super-hydrophobicity and nanopores contributes to the high separation performance. With its excellent durability, easy scale up, easy fabrication, inexpensive, and green regeneration, we envision that this functional biomass-derived membrane could be used as a substitute for filter membrane in environmental restoration.

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The promising solar‐powered water purification based on graphene functional architectures

Cited by 24 publications

References 155 publications

Engineering Materials to Enhance Light-to-Heat Conversion for Efficient Solar Water Purification

Engineering Materials to Enhance Light-to-Heat Conversion for Efficient Solar Water Purification

A reconfigurable and magnetically responsive assembly for dynamic solar steam generation

Durable, flexible, and super‐hydrophobic wood membrane with nanopore by molecular cross‐linking for efficient separation of stabilized water/oil emulsions

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