High Rate Production of Clean Water Based on the Combined Photo‐Electro‐Thermal Effect of Graphene Architecture

Cui, Linfan; Zhang, Panpan; Xiao, Yukun; Yuan, Liang; Liang, Hanxue; Cheng, Zhihua; Qu, Liangti

doi:10.1002/adma.201706805

Cited by 232 publications

(137 citation statements)

References 40 publications

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“…As a consequence, extra energy can be harvested from the environment via the radiative heat originated from temperature difference, instead of heat losses to the surrounding. Due to the introduction of photo-electro-thermal effect of graphene-based materials, water evaporation rate was around 2.01-2.61 kg m −2 h −1 upon solar illumination of 1 kW m −2 even without configuration optimization, [128] which was much higher than that of previously reported graphene-based evaporators. Similarly, Gan and co-workers proposed a new architecture of solar steam generator (carbon-coated paper-air-foam structure floating on top of water) to harvest extra energy from the warmer environment, so as to realize near perfect efficiency (100%).…”

Section: Strategies For Enhancing Water Evaporation Efficiencymentioning

confidence: 71%

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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Section: Strategies For Enhancing Water Evaporation Efficiencymentioning

confidence: 71%

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

et al. 2019

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“…The solar evaporation rate is calculated to be 2.28 kg m −2 h −1 (Figure S9, Supporting Information). The performance of the 3D CMF was compared to the recently reported evaporators (Figure c) . Obviously, the 3D CMF shows excellent evaporation rates both in dark and under illumination.…”

Section: Resultsmentioning

confidence: 96%

Carbonized Tree‐Like Furry Magnolia Fruit‐Based Evaporator Replicating the Feat of Plant Transpiration

et al. 2019

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It has long been an aspirational goal to create artificial evaporators that allow omnidirectional energy absorptance, adequate water supply, and fast vapor transportation, replicating the feat of plant transpiration, to solve the global water crisis. This work reveals that magnolia fruits, as a kind of tree‐like living organism, can be outstanding 3D tree‐like evaporators through a simple carbonization process. The arterial pumping, branched diffusion, and confined evaporation are achieved by the “trunk,” “branches,” and “leaves,” respectively, of the mini tree. The mini tree possesses omnidirectional high light absorptance with minimized heat loss and gains energy from the environment. Water confined in the fruit possesses reduced vaporization enthalpy and transports quickly following the Murray's law. A record‐high vapor generation rate of 1.22 kg m−2 h−1 in dark and 3.15 kg m−2 h−1 under 1 sun illumination is achieved under the assistance of the gully‐like furry surface. The “absorption of nutrients” enables the fruit to recover valuable heavy metals as well as to produce clean water from wastewater efficiently. These findings not only reveal the hidden talent of magnolia fruits as cheap materials for vapor generation but also inspire future development of high‐performance, full‐time, and all‐weather vapor generation and water treatment devices.

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Section: The Progress Of Issg System In Different Aspectsmentioning

confidence: 99%

“…Besides, the introduction of conventional photovoltaic cells into the seawater desalination process also plays an active role in increasing seawater desalination efficiency. Based on this concept, Qu's group adopted the photo‐electro‐thermal effect into the evaporation system and designed a unique ISSG device with a record high water production rate of 2.01–2.61 kg · m −2 · h −1 . This device consists of a porous graphene sponge as the optical‐thermal conversion layer, a graphene foil as the electrothermal conversion layer (Figure d), the polystyrene foam‐glass fiber as the thermal insulation layer, and a cotton swab as the path of water supply.…”

Section: The Progress Of Issg System In Different Aspectsmentioning

confidence: 99%

Fast‐Growing Field of Interfacial Solar Steam Generation: Evolutional Materials, Engineered Architectures, and Synergistic Applications

Wang

et al. 2019

Solar RRL

143

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The lack of fresh water resources is attracting concern worldwide. Recently, to address this global issue, researchers proposed the heat localization concept for interfacial solar seawater desalination in 2014. Since then, interfacial solar steam generation (ISSG) devices have attracted much attention, due to their potential for achieving highly enhanced optical‐thermal conversion through a single interface as compared with traditional solar seawater desalination. To date, the promising prospect of ISSG systems in seawater desalination has stimulated the rapid development of solar desalination technology based on heat localization. To comprehensively recognize ISSG devices and acquire more insights into their design associated with biological relevance, efficiency improvement, and applications, this review summarizes the progresses and prospects of ISSG devices in relation to the evolution of advanced materials, the engineering architecture, the collaborative application, and the current challenges.

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High Rate Production of Clean Water Based on the Combined Photo‐Electro‐Thermal Effect of Graphene Architecture

Cited by 232 publications

References 40 publications

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

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

Carbonized Tree‐Like Furry Magnolia Fruit‐Based Evaporator Replicating the Feat of Plant Transpiration

Fast‐Growing Field of Interfacial Solar Steam Generation: Evolutional Materials, Engineered Architectures, and Synergistic Applications

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