Direct solar steam generation system for clean water production

Zhang, Panpan; Liao, Qihua; Yao, Houze; Huang, Yaxin; Cheng, Huhu; Qu, Liangti

doi:10.1016/j.ensm.2018.10.006

Cited by 266 publications

(147 citation statements)

References 157 publications

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“…[39] Copyright 2019, Royal Society of Chemistry. c) Absorbance spectra of few years, an interfacial solar steam generation has been developed, [55] in which solar power absorbed by photothermal materials at the air/water interfaces is converted into thermal energy at localized area to promote the evaporation of seawater, leading to high-performance generation of water vapor to be collected for freshwater (Figure 6a). The photothermal materials that rest on the top of the water surface serve as the solar absorber and vapor evaporator.…”

Section: Solar Water Desalinationmentioning

confidence: 99%

Insights into the Photothermal Conversion of 2D MXene Nanomaterials: Synthesis, Mechanism, and Applications

Liu

et al. 2020

Adv Funct Materials

446

268

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Since their discovery in 2011, 2D transition metal carbide/nitride (MXene) materials have received extensive interest due to their unique planar structure, chemical diversity, and superior physiochemical features. Very recently, MXenes have demonstrated outstanding photothermal conversion by virtue of excellent electromagnetic wave absorption capacity and a localized surface plasmon resonance effect. Photothermal conversion is an efficient way to utilize solar energy that allows the transformation of solar illumination into thermal energy, thus enabling MXenes to be applied in various fields, such as solar steam generation and biomedicals. However, the light-to-heat capability of MXenes has been paid much less attention until now. Recent progress in photothermal MXenes is reviewed to provide a comprehensive understanding of their photothermal conversion mechanism and applications. First, synthetic strategies of MXenes and their nanocomposites will be briefly summarized, and the discussion of the photothermal conversion mechanism and, most importantly, current advances in their photothermal applications will follow. It is highly anticipated that 2D MXenes, through elaborate material design and interdisciplinary approach, will become one of the mainstream photothermal materials and their application fields will also be expanded in the near future.

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Section: Solar Water Desalinationmentioning

confidence: 99%

Insights into the Photothermal Conversion of 2D MXene Nanomaterials: Synthesis, Mechanism, and Applications

Liu

et al. 2020

Adv Funct Materials

446

268

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“…H v is determined by the vaporization temperature of the water/air interface (2453 kJ kg −1 at 20 °C and 2265 kJ kg −1 at 100 °C), and H s is dependent on the specific heat of water (c water = 4.186 kJ kg −1 °C −1 ) and its temperature change. Several previous reviews have briefly summarized the diverse solar absorber materials and device designs of steam generators, [13,23,[26][27][28][29]111] whereas we will mainly focus on the latest representative strategies for enhancing water evaporation efficiency in the following part. In aim to minimize heat losses and boost conversion efficiency, an insulating and hydrophilic porous supporter has been integrated into the floating system to avoid the direct contact between photothermal materials and bulk water, as shown in Figure 3a, which has been regarded as the next generation solar-driven water evaporation device.…”

Section: Development Trend Of Solar-driven Water Evaporatormentioning

confidence: 99%

“…Over the past five years, great progress has been made in the interfacial heating system for water evaporation from the selection of photothermal materials to the configuration optimization of evaporator devices. Several previous reviews have briefly summarized the diverse solar absorber materials and device designs of steam generators, whereas we will mainly focus on the latest representative strategies for enhancing water evaporation efficiency in the following part. To date, there are four strategies to improve water evaporation productivity, which are first proposed as crucial criteria of NextGen photothermal water evaporator: 1) superior light utilization ability and light‐to‐heat efficiency, 2) effective thermal management, 3) appreciable water channels and 4) excellent salt‐resistant ability (shown in Figure b).…”

Section: Emerging Photothermal‐assisted Water Purification/harvestingmentioning

confidence: 99%

Harnessing Solar‐Driven Photothermal Effect toward the Water–Energy Nexus

et al. 2019

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Producing affordable freshwater has been considered as a great societal challenge, and most conventional desalination technologies are usually accompanied with large energy consumption and thus struggle with the trade‐off between water and energy, i.e., the water–energy nexus. In recent decades, the fast development of state‐of‐the‐art photothermal materials has injected new vitality into the field of freshwater production, which can effectively harness abundant and clean solar energy via the photothermal effect to fulfill the blue dream of low‐energy water purification/harvesting, so as to reconcile the water–energy nexus. Driven by the opportunities offered by photothermal materials, tremendous effort has been made to exploit diverse photothermal‐assisted water purification/harvesting technologies. At this stage, it is imperative and important to review the recent progress and shed light on the future trend in this multidisciplinary field. Here, a brief introduction of the fundamental mechanism and design principle of photothermal materials is presented, and the emerging photothermal applications such as photothermal‐assisted water evaporation, photothermal‐assisted membrane distillation, photothermal‐assisted crude oil cleanup, photothermal‐enhanced photocatalysis, and photothermal‐assisted water harvesting from air are summarized. Finally, the unsolved challenges and future perspectives in this field are emphasized. It is envisioned that this work will help arouse future research efforts to boost the development of solar‐driven low‐energy water purification/harvesting.

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“…[ 10 ] Combining a traditional distillation system with an energy‐saving process, such as solar steam generation is promising owing to its excellent scalability, high efficiency, and environmental friendliness. [ 11–15 ] Therefore, the development of an efficient solar steam generator has gained ever‐increasing attention.…”

Section: Introductionmentioning

confidence: 99%

Functionalized MXene Enabled Sustainable Water Harvesting and Desalination

Fei

Koh

et al. 2020

Advanced Sustainable Systems

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Solar irradiation is a promising resource for sustainable energy conversion and storage in many technological fields. Interfacial solar steam generator is emerging as a sustainable system for water harvesting under natural solar irradiance. However, natural sunlight is usually insufficient for conventional interfacial (2D absorber) solar steam generators to achieve high solar steam efficiency (>85%). Herein, a functionalized MXene‐polymeric membrane‐based solar steam generator in a heat localization structure is reported as an efficient water harvesting and desalination system. The functionalized MXene flakes are homogeneously dispersed and encapsulated in polymeric networks of cellulose acetate in the crosslinking process, where water is automatically pumped through the absorber in the embedded nano/micro channels. As such, the fabricated solar steam generator shows a net evaporation rate (with respect to that in the dark condition) of 1.47 kg m−2 h−1 with 92.1% efficiency under 1 sun illumination. Moreover, the salt rejection rate for high salinity seawater (original Na+ concentration is 18 000 mg L−1) reaches up to 97.5%, generating drinkable water that meets the WHO standard. The new photothermal membrane absorber is cost‐effective, scalable, washable, and stable under harsh conditions; holding great promise for practical solar desalination applications.

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Direct solar steam generation system for clean water production

Cited by 266 publications

References 157 publications

Insights into the Photothermal Conversion of 2D MXene Nanomaterials: Synthesis, Mechanism, and Applications

Insights into the Photothermal Conversion of 2D MXene Nanomaterials: Synthesis, Mechanism, and Applications

Harnessing Solar‐Driven Photothermal Effect toward the Water–Energy Nexus

Functionalized MXene Enabled Sustainable Water Harvesting and Desalination

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