Issue 31, 2017

Paper-based membranes on silicone floaters for efficient and fast solar-driven interfacial evaporation under one sun

Abstract

Solar-driven water evaporation has emerged as a highly efficient solar-thermal process to harness abundant clean solar energy for a variety of important applications. Herein, we rationally designed and developed a high-efficiency and fast-response solar-driven interfacial evaporation system by integrating a paper-based reduced graphene oxide (PrGO) composite membrane on top of a silicone-based porous insulation layer (PIL). The PrGO membrane that was prepared by using a cost-effective, scalable, simple fabrication process could effectively absorb and convert broadband solar light into heat to drive the evaporation process. Simultaneously, the hydrophilic PrGO membrane could provide continuous water supply through its strong capillary wicking effect. The floating PIL not only physically suspends the PrGO membrane but also thermally localizes solar heating at the air–water interface by suppressing downward heat conduction loss. Under one-sun illumination for 30 min, the resultant PrGO-PIL solar-driven interfacial evaporation system achieved steady-state and time-averaged evaporation efficiency of 89.7% and 80.6%, respectively. Theoretical analysis indicates that advantageous thermophysical properties of the evaporating materials together with rational design of the evaporation structure contribute to the superior evaporation performance. Such a high-efficiency solar-driven interfacial evaporation system has enabled consistent high-performance solar desalination of seawater under ambient one-sun illumination.

Graphical abstract: Paper-based membranes on silicone floaters for efficient and fast solar-driven interfacial evaporation under one sun

Supplementary files

Article information

Article type
Paper
Submitted
14 апр. 2017
Accepted
11 мај 2017
First published
15 мај 2017

J. Mater. Chem. A, 2017,5, 16359-16368

Paper-based membranes on silicone floaters for efficient and fast solar-driven interfacial evaporation under one sun

Z. Wang, Q. Ye, X. Liang, J. Xu, C. Chang, C. Song, W. Shang, J. Wu, P. Tao and T. Deng, J. Mater. Chem. A, 2017, 5, 16359 DOI: 10.1039/C7TA03262E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements