Free-standing reduced graphene oxide (rGO) membrane for salt-rejecting solar desalination via size effect
Author:
Zhuang Pengyu12, Fu Hanyu12, Xu Ning12, Li Bo12, Xu Jun3, Zhou Lin12ORCID
Affiliation:
1. National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, Key Laboratory of Intelligent Optical Sensing and Integration , Nanjing University , Nanjing, 210093 , China 2. Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing, 210093 , China 3. School of Electronics Science and Engineering, Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials , Nanjing University , Nanjing, 210093 , China
Abstract
Abstract
Interfacial solar vapor generation has revived the solar-thermal-based desalination due to its high conversion efficiency of solar energy. However, most solar evaporators reported so far suffer from severe salt-clogging problems during solar desalination, leading to performance degradation and structural instability. Here, we demonstrate a free-standing salt-rejecting reduced graphene oxide (rGO) membrane serving as an efficient, stable, and antisalt-fouling solar evaporator. The evaporation rate of the membrane reaches up to 1.27 kg m−2 h−1 (solar–thermal conversion efficiency ∼79%) under one sun, out of 3.5 wt% brine. More strikingly, due to the tailored narrow interlayer spacing, the rGO membrane can effectively reject ions, preventing salt accumulation even for high salinity brine (∼8 wt% concentration). With enabled salt-antifouling capability, flexibility, as well as stability, our rGO membrane serves as a promising solar evaporator for high salinity brine treatment.
Funder
National Natural Science Foundation of China Fundamental Research Funds for the Central Universities National Key Research and Development Program of China
Publisher
Walter de Gruyter GmbH
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology
Reference37 articles.
1. O. Neumann, C. Feronti, A. D. Neumann, et al., “Compact solar autoclave based on steam generation using broadband light-harvesting nanoparticles,” Proc. Natl. Acad. Sci. U. S. A., vol. 110, pp. 11677–11681, 2013. 2. H. Ghasemi, G. Ni, A. M. Marconnet, et al., “Solar steam generation by heat localization,” Nat. Commun., vol. 5, p. 4449, 2014. 3. H. Gong, X. Liu, G. Liu, Z. Lin, X. Yu, and L. Zhou, “Non-noble metal based broadband photothermal absorbers for cost effective interfacial solar thermal conversion,” Nanophotonics, vol. 1, 2020, (ahead-of-print). 4. Y. Guo, X. Zhou, F. Zhao, J. Bae, B. Rosenberger, and G. Yu, “Synergistic energy nanoconfinement and water activation in hydrogels for efficient solar water desalination,” ACS Nano, vol. 13, pp. 7913–7919, 2019. 5. H. Liu, X. Yu, J. Li, N. Xu, L. Zhou, and J. Zhu, “Plasmonic nanostructures for advanced interfacial solarvapor generation,” Sci. Sin. Phys. Mech. Astronom., vol. 49, p. 124203, 2019.
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