Structure development of carbon-based solar-driven water evaporation systems

Wen, He; Zhou, Lei; Wang, Miao; Cao, Yang; Chen, Xuemei; Hou, Xu

doi:10.1016/j.scib.2021.02.014

Cited by 171 publications

(72 citation statements)

References 77 publications

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“…Micro/nanostructured materials include black carbon-based materials, black silicon, black GaAs, and other black materials. [21,31,34,52,53,[94][95][96][97][98][99] Generally, bulk materials tend to have a limited emissivity. For example, a graphite sheet without micro/nanostructures has an emissivity of ≈0.85, which is not beneficial for solar energy harvesting.…”

Section: Multiple Interactions Of Micro/nanostructured Materialsmentioning

confidence: 99%

A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Cheng

Wang

Schaaf

2022

Advanced Sustainable Systems

134

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of monolithic silicon/perovskite solar cell has achieved over 29%. [13,14] Alternatively, photothermal conversion is another way to utilize solar energy and has drawn dramatically increasing attention due to the easily achievable large conversion efficiency (usually larger than 50%) for the applications in thermal catalysis, [15][16][17][18] water evaporation and desalination, [19][20][21][22][23][24][25][26][27] bacterial killing, [28] as well as thermal-responsive sensors. [29][30][31] Photothermal conversion of solar energy refer that solar energy is first converted into heat and then heat energy is utilized to achieve the desired destinations, [15,16,28,[31][32][33][34] such as water purification, desalination, electric power generation, catalysis conversion, bacterial killing, and actuators. Thus, photothermal conversions of solar energy can be supplementary to PV-based technology in solar energy conversion and are deemed to be extremely important to clean energy production. [19,35,36] Very recently, photothermal-derived applications have attracted many researchers' interests and great efforts have been taken to expand the application fields and increase the conversion efficiency based on solar energy conversion. [29,[37][38][39][40][41][42][43][44] Among all the applications, photothermal water evaporation for desalination and water purification has attracted the most attention, owning that freshwater can be directly produced by only using solar energy and it can address the freshwater shortage challenge for many countries. [27,32,33,[45][46][47][48][49][50][51][52][53] However, the research focusing on other applications has attracted less attention than photothermal water evaporation, which should also be taken equally important attention for making the most of solar energy. For example, photothermal catalysis for H 2 generation and CO 2 reduction can be applied to convert solar energy into chemical energy under high concentrated solar intensity, but the efforts are still far from enough. Although photothermal electric power generation can show a solar-to-electricity conversion efficiency exceeding 7% under 38 Sun, [54] its conversion efficiency remains very low under low concentration solar intensity, such as 1 Sun or ambient conditions. Thus, the tradeoff between efficiency, costs, and practicality should be considered in future works. In addition, photothermal bacterial killing technology has proved that it can be efficiently used for killing bacteria under solar light illumination, [28] but whether it can be applied for human or animal wound treatment still needs to be discussed. Furthermore, solar energy can also cause thermally sensitive objects to reversibly change the physical properties for Solar energy is a green, sustainable, and de facto inexhaustible energy source for mankind. The conversion of solar energy into other forms of energy has attracted extensive research interest due to climate change and the energy crisis. Among all the solar energy conversion technologies, photothermal conversio...

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Section: Multiple Interactions Of Micro/nanostructured Materialsmentioning

confidence: 99%

A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Cheng

Wang

Schaaf

2022

Advanced Sustainable Systems

134

View full text Add to dashboard Cite

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“…Moreover, the excellent heat transfer properties of carbon nanotubes along the axial direction have received a lot of attention, and vertically aligned carbon nanotube arrays have the advantages of good thermal conductivity in the axial direction. In addition, the micro–nanostructure in the surface of vertically aligned carbon nanotube arrays increases its surface area, which makes the vertically aligned carbon nanotube arrays ideal materials for phase‐change heat transfer [36–40] . Lauany et al.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the micro-nanostructure in the surface of vertically aligned carbon nanotube arrays increases its surface area, which makes the vertically aligned carbon nanotube arrays ideal materials for phase-change heat transfer. [36][37][38][39][40] Lauany et al used chemical vapor deposition to prepare carbon nanotubes as nanostructures on silicon (Si) wafer surface and found that the BHF coefficient was enhanced by 100 % at low heat flow densities and limited enhanced BHF coefficient at high heat flow densities. [41] Ujereh et al synthesized multiwalled carbon nanotubes on the Si wafer surface using FC-72 as the workpiece, and the experimental results showed that the critical heat flow (CHF) of the carbon nanotube surface increased by 45 % and onset of nucleation boiling (ONB) superheat decreased by 67 % compared with the flat surface.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Phase‐Change Heat Transfer by Surface Wettability Control

et al. 2022

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The phase-change heat-transfer coefficient can be improved by several orders of magnitude through the design of micronanostructures on typical surfaces. However, with the rapid development of intelligent and integrated devices, there is an increasing desire to regulate the heat exchange form of the surface to adapt to various environmental requirements. This study concerns the design of a carbon nanotube array-based phase-change heat-transfer surface, which can switch its wettability between superhydrophobicity and superhydrophilicity. By installing this surface on a device that integrates boiling heat transfer and condensation heat transfer, the device can independently adjust the surface wettability for different heattransfer requirements. As a result, this surface can enhance condensation heat-transfer coefficient over 90 % in the superhydrophobic state and enhance the boiling heat-transfer coefficient over 41 % in the superhydrophilic state. Surfaces with controllable wettability can aid development of a new generation of smart control technologies to actively regulate system and device temperatures.

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“…Carbon-based materials are an excellent photothermal conversion material for solar desalination as they have a broad light absorption capability, great stability and thermal conductivity [5][6][7]. Furthermore, low-cost carbon materials can be produced from agricultural waste such as rice husk.…”

Section: Introductionmentioning

confidence: 99%

Desalination of seawater using carbon-coated solar absorber in solar still

Karen

Wong

Melvin

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Desalination is a process of eliminating salt and other minerals from seawater which turns it to a safe usable water. This study showed the generation of clean water from seawater using carbon-coated solar absorber in two different solar still body colours which are transparent and black solar still, under direct solar exposure at approximately 1.2 kW/m2. The efficiency of carbon-coated solar absorber in the transparent and black solar still was computed, while the clean water collected was examined for its pH and salinity. Carbon-coated solar absorber in black solar still exhibit the highest efficiency at around 35.71%, where the pH and salinity of the collected clean water was substantially reduced to usable water at 6.55 and 62 ppm, respectively.

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Structure development of carbon-based solar-driven water evaporation systems

Cited by 171 publications

References 77 publications

A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Enhanced Phase‐Change Heat Transfer by Surface Wettability Control

Desalination of seawater using carbon-coated solar absorber in solar still

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