Conversion and storage of solar energy for cooling

Wang, Wenbin; Shi, Yusuf; Zhang, Chenlin; Li, Renyuan; Wu, Mengchun; Zhuo, Sifei; Aleid, Sara; Wang, Peng

doi:10.1039/d1ee01688a

Cited by 16 publications

(11 citation statements)

References 36 publications

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“…In contrast, the evaporation rate significantly increased to 1.2 kg m −2 h −1 by using the silicone sponge/CNTs for solar interfacial evaporation, for the heat energy converted from solar energy was localized on the surface of the solar evaporator. 43,44 Once the LRD nanosheets were introduced into the silicone sponge, the evaporation rate was significantly enhanced. The evaporation rate was ∼1.58 kg m −2 h −1 for the LS/CNTs solar evaporator with 0.30% LRD and reached 1.77 kg m −2 h −1 for that with 0.60% LRD.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Superelastic Clay/Silicone Composite Sponges and Their Applications for Oil/Water Separation and Solar Interfacial Evaporation

Chen

Zhang

2022

Langmuir

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3D porous materials are of great interest in many areas of study, but it is still difficult to prepare those with high elasticity and low thermal conductivity via facile methods. Here, superelastic laponite/silicone (LS) composite sponges with low thermal conductivity are prepared via a simple approach. The LS sponges were analyzed by various characterization methods. The content of laponite nanosheets in LS sponges has a great influence on the microstructure, comprehensive mechanical properties, and thermal conductivity. LS sponges feature (i) high mechanical strength, compressibility, and elasticity, (ii) excellent superhydrophobicity/superoleophilicity, and (iii) low thermal conductivity. Consequently, LS sponges could be used for water purification, for example, oil/water separation and solar-driven interfacial evaporation in combination with carbon nanotubes (CNTs). The LS/CNTs solar evaporator has a remarkable evaporation rate of 1.77 kg m −2 h −1 for the 3.5 wt % NaCl aqueous solution under 1 kW m −2 irradiation and high salt resistance. We foresee that this study will promote the development of new 3D porous materials and their applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Superelastic Clay/Silicone Composite Sponges and Their Applications for Oil/Water Separation and Solar Interfacial Evaporation

Chen

Zhang

2022

Langmuir

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“…As shown in Figure a, a typical interfacial evaporator is functionally composed of a floating thermal insulator, a water transport layer, and a light absorption layer, where the absorber captures solar energy efficiently and evaporates water molecules on its surface through thermal conduction to achieve efficient evaporation. Such a thermal conduction-enabled evaporation system (TCEES) leads to a fixed evaporation surface (solar absorber), which is inevitably affected by salt accumulation. − Strategies such as Janus design, − hydrophobic design, reflow design, − Donnan effect design, , fluidic design, − tumbling design, − and localized crystallization, − therefore, have emerged to achieve salt rejection on the evaporation front. Recently, Chen and co-workers have creatively proposed a non-contact radiative configuration that shifts sunlight to the infrared band, where water strongly absorbs to generate steam (>133 °C) under 1 sun .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Contactless Salt-Collecting Solar Desalination

Bian

Zhao

et al. 2022

ACS Appl. Mater. Interfaces

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Solar desalination is expected to solve the problem of global water shortage. Yet its stability is plagued by salt accumulation. Here, a paper-based thermal radiation-enabled evaporation system (TREES) is demonstrated to achieve sustainable and highly efficient salt-collecting desalination, featuring a dynamic evaporation front based on the accumulated salt layer where water serves as its own absorber via energy down-conversion. When processing 7 wt % brine, it continuously evaporates water at a high rate2.25 L m–2 h–1 under 1 sun illuminationwhich is well beyond the input solar energy limit for over 366 h. It is revealed that such enhanced evaporation arises from the unique vertical evaporation wall of the paper-TREES, which captures the thermal energy from the heated bottom efficiently and gains extra energy from the warmer environment. These findings provide novel insights into the design of next-generation salt-harvesting solar evaporators and take a step further to advance their applications in green desalination.

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“…The direct utilization of solar energy as an alternative to fossil fuels is propitious to carbon-neutral target realization. [1][2][3] It can be harvested using a range of ever-evolving technologies, such as photovoltaics, [4][5][6][7] water distillation, [8][9][10][11][12][13][14] molten salt technology, 15 and artificial photosynthesis. 16,17 Of the several solar energy converting methods, solar chemical conversion, including photocatalysis [18][19][20][21][22][23][24] and photothermal catalysis, are regarded as very promising technologies to produce chemical products.…”

Section: Introductionmentioning

confidence: 99%

An efficient and universal solar interfacial photothermal reactor toward liquid phase oxidation

Wang

Zhu

et al. 2022

AIChE Journal

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Photothermal catalysis has attracted great attention owing to high solar energy utilization efficiency, and great progress has been achieved in gas‐phase catalysis. However, photothermal catalysis in liquid‐phase shows a limited performance, due to high specific heat capacity of liquid. Herein, an interfacial photothermal catalytic (IPC) strategy applying an IPC leaf was designed for liquid‐phase catalysis using benzyl alcohol oxidation as the model reaction. On even ground, the benzaldehyde generation rate (8.7 mmol gcat−1 h−1) of the IPC system with Ce‐doped MnO2 as photothermal catalyst was almost 4.8 times and 3 times of bulk photothermal catalysis and the relative bulk thermal catalysis. Experimental results proved that this excellent catalytic performance could be attributed to both the high temperature achieved and the enhanced lattice oxygen activity by solar irradiation. This IPC system also exhibited good universality and long‐term durability. Our work innovatively created a green strategy to obtain fine chemicals with only solar irradiation.

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Conversion and storage of solar energy for cooling

Abstract: A passive no electricity and sustainable cooling on-demand (NESCOD) system can convert and store solar energy for cooling.

Cited by 16 publications

References 36 publications

Superelastic Clay/Silicone Composite Sponges and Their Applications for Oil/Water Separation and Solar Interfacial Evaporation

Superelastic Clay/Silicone Composite Sponges and Their Applications for Oil/Water Separation and Solar Interfacial Evaporation

Enhanced Contactless Salt-Collecting Solar Desalination

An efficient and universal solar interfacial photothermal reactor toward liquid phase oxidation

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