Preparation and direct photothermal property of reduced graphene oxide @copper foam cured MIL-101 for solar adsorption cooling process

Shen, Qiqi; Zhang, Weidong; Shao, Junpeng; Yin, Yu; Lin, Zhongqin; Wang, Haiyan

doi:10.1016/j.enconman.2021.115011

Cited by 9 publications

(1 citation statement)

References 24 publications

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“…The non-contact system reduced heat transfer from the evaporator to the bulk water, improving energy utilization for evaporation. With the advantages of high thermal conductivity, three-dimensional microporous structure, and large specific surface area, copper foam as a substrate can not only play the role of water-absorbing evaporation layer but also achieve superior photothermal conversion. − First, the super-hydrophilic copper foam was produced by simple alkali etching and calcination to generate CuO nanoarrays on copper foam (OCF). Since CuO, an important narrow bandgap (1.3–2.1 eV) p-type semiconductor material, has good thermal and photochemical stability, it is widely used as a photoconductor and photothermal agent .…”

Section: Introductionmentioning

confidence: 99%

Multi-Functional Janus Hollow Solar Evaporator Based on Copper Foam for Non-Contact High-Efficiency Solar Interfacial Distillation

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

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As a sustainable, clean, and friendly technology with a minimal carbon footprint when treating seawater or wastewater, interfacial solar vapor generation (ISVG) technology is a great alternative to traditional desalination and water purification methods (e.g., reverse osmosis and ultrafiltration). So far, it presents tremendous potential for applications in realizing desalination of seawater or brine, wastewater treatment, and so forth. However, the precipitated salt particles during conventional ISVG inevitably block the evaporator surface, resulting in the degradation of photothermal conversion and decrease of evaporation rate. Herein, a multi-functional non-contact Janus hollow evaporator based on copper foam was prepared, which was assembled by a hydrophobic lightto-heat conversion layer and a hydrophilic interfacial water evaporation layer as two separate parts. Accordingly, the precipitated salt in the ISVG system does not block the photothermal interface, increasing the stability of solar capture and reusability of the evaporator. Notably, the hollow structure of the evaporator has a local interfacial heating effect, endowing the evaporation system with a high seawater evaporation rate of 2.249 kg m −2 h −1 . The evaporator is capable of stable operation for 10 h under 1 sun illumination even when evaporating concentrated brine (15 wt %). Moreover, the evaporation rate of water under one sun irradiation reached 2.284 kg m −2 h −1 and the solar-to-vapor efficiency reached 96.6%. Not only that, the evaporator was able to successfully purify wastewater containing dyes and heavy metal ions. The multi-functional Janus hollow interfacial solar evaporator will provide inspiration for upcoming research on the production of safety water.

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