Recent progress in solar photothermal steam technology for water purification and energy utilization

Chen, Chuanliang; Wang, Min; Chen, Xin; Chen, Xianchun; Fu, Qiang; Deng, Hua

doi:10.1016/j.cej.2022.137603

Cited by 75 publications

(41 citation statements)

References 142 publications

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“…In designing SSG devices for seawater desalination, additional problems should be considered such as salt blocking channel, heavy metal ion pollution, and low recyclability. 26 As discussed above, chemical regulation and structural engineering have become the common strategies to improve the performance of photothermal materials in the solar-thermal conversion to generate heat for water evaporation. Appropriate chemical regulation on photothermal materials and proper design of their assemblies can increasingly absorb light up to 98%, which is higher than most of the nanoparticle-based and semiconductor photothermal materials.…”

Section: Key Factors For Designing Solar Steam Generation Devicementioning

confidence: 99%

“…The solar evaporation efficiency η, which is also known as the light-to-heat conversion efficiency, shown in Table S1 (Supporting Information) is calculated using η = ṁ h LV P i n where ṁ (kg m –2 s –1 ) is the mass flux, h LV (J kg –1 ) is the total enthalpy of liquid–vapor phase change (sensible heat and latent heat), and P in (W m –2 ) is the incident solar intensity. The mass flux can be calculated using ṁ = 1 A e v a p d m d t where m (kg) is the mass change of water and t (s) is the illumination time. For a two-dimensional system, A evap (m 2 ) is simply equal to its projection area.…”

Section: Solar Thermal Conversion Materialsmentioning

confidence: 99%

“…Water supply to the hot evaporation region needs to be considered also to improve the overall performance of solar evaporation. In designing SSG devices for seawater desalination, additional problems should be considered such as salt blocking channel, heavy metal ion pollution, and low recyclability …”

Section: Design Strategies For Solar Steam Generation Systemmentioning

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: Key Factors For Designing Solar Steam Generation Devicementioning

confidence: 99%

Section: Solar Thermal Conversion Materialsmentioning

confidence: 99%

Section: Design Strategies For Solar Steam Generation Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…However, conventional strategies (i.e., atmospheric water harvest, wastewater reuse, and desalination) are generally limited by large energy consumption and carbon footprint. Common centralized water infrastructure fails to be deployed in remote and off-grid areas far away from water sources, all of which require future development of eco-friendly and energywise technologies. − …”

Section: Introductionmentioning

confidence: 99%

Photothermal Aerogel Beads Based on Polysaccharides: Controlled Fabrication and Hybrid Applications in Solar-Powered Interfacial Evaporation, Water Remediation, and Soil Enrichment

et al. 2022

ACS Appl. Mater. Interfaces

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Solar-powered interfacial evaporation has emerged as an innovative and sustainable technology for clean water production. However, the rapid, mass and shape-controlled fabrication of three-dimensional (3D) steam generators (SGs) for versatile hybrid applications remains challenging. Herein, composite aerogel beads with self-contained properties (i.e., hydrophilic, porous, photothermal, and durable) are developed and demonstrated for threefold hybrid applications including efficient solar-powered interfacial evaporation, water remediation, and controlled soil enrichment. The rational incorporation of selected polysaccharides enables us to fabricate bead-like aerogels with rapid gelation, continuous processing, and enhanced ion adsorption. The composite beads can attain a high water evaporation rate of 1.62 kg m–2 h–1 under 1 sun. Meanwhile, high phosphate adsorption capacity of over 120 mg g–1 is achieved in broad pH (2.5–12.4) and concentration (200–1000 mg L–1) ranges of phosphate solutions. Gratifyingly, we demonstrate the first example of recycling biomaterials from interfacial SGs for controlled nutrient release, soil enrichment, and sustainable agriculture. The phosphate-saturated beads can be gradually broken down in the soil. Macronutrients (N, P, and K) can be slowly released in 50 days, sustaining the plant germination and growth in a whole growth stage. This work shines light on the mass and controlled fabrication of aerogel beads based on double-network biopolymers, not merely scaling up solar-powered interfacial evaporation but also considering water remediation, waste material disposal, and value-added conversion.

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Manipulation of the Self‐Assembly Morphology by Side‐Chain Engineering of Quinoxaline‐Substituted Organic Photothermal Molecules for Highly Efficient Solar‐Thermal Conversion and Applications

Li,

Wang,

Zhang

et al. 2024

Angewandte Chemie

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Organic photothermal materials have attracted more and more attention due to the structural diversity, flexibility, and compatibility. However, the energy conversion efficiency is limited due to the narrow absorption spectrum, strong reflection/transmittance and insufficient non‐radiative decay. Herein, we synthesized two quinoxaline‐based D‐A‐D‐A‐D type molecules with ethyl (BQE) or carboxylate (BQC) substitutes. The strong intramolecular charge transfer endow both molecules broad absorption ranging from 350–1000 nm. Besides, the high reorganization energy and weak molecular packing of BQE yield efficient non‐radiative decay. More importantly, the self‐assembly of BQE leads to textured surface and enhances the light‐trapping efficiency with dramatically reduced light reflection/transmittance. Consequently, BQE achieved impressive solar‐thermal conversion efficiency of 18.16% under 1.0 kW m−2 irradiation with good photobleaching resistance. Inspired by this, the water evaporation rate attained to 1.2 kg m−2 h−1 with efficiency of 83% for BQE based interfacial evaporation device under 1.0 kW m−2 simulated sunlight. Eventually, synergetic integration of solar‐steam and thermoelectric co‐generation device based on BQE is realized without sacrificing solar‐steam efficiency significantly, highlighting the practical application toward impactful photothermal exploitation. This work provides new insights of molecular design for enhancing light‐trapping management by molecular self‐assembly, which paves the way of photothermal‐driven application of organic photothermal materials.

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Recent progress in solar photothermal steam technology for water purification and energy utilization

Cited by 75 publications

References 142 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

Photothermal Aerogel Beads Based on Polysaccharides: Controlled Fabrication and Hybrid Applications in Solar-Powered Interfacial Evaporation, Water Remediation, and Soil Enrichment

Manipulation of the Self‐Assembly Morphology by Side‐Chain Engineering of Quinoxaline‐Substituted Organic Photothermal Molecules for Highly Efficient Solar‐Thermal Conversion and Applications

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