Microbubble-based elastic graphene aerogel for efficient solar-driven interfacial evaporation

Graphene aerogel; Interfacial evaporation; Seawater desalination; Fresh water resources; Electronic, Optical and Magnetic Materials; Renewable Energy, Sustainability and the Environment

Abstract :

[en] Solar-driven interfacial evaporation has emerged as one of the most promising solutions to address the shortage of freshwater resources. Graphene aerogels (GAs) exhibit immense potential in solar-driven interfacial evaporation due to their excellent photothermal conversion efficiency. However, the complex fabrication and inherent fragility of conventional GAs limit their application in desalination. To address these challenges, this study incorporates natural latex (NL) into GA to prepare a novel elastic GA/NL. It uses a gas bubbles and ice crystals templating method followed by atmospheric-pressure drying. The prepared GA/NL achieves a compressive strength of 66.9 kPa at 90 % strain. Its three-dimensional interconnected porous network structure contributes to high porosity (∼ 97 %) and an average light absorbance of 93.3 %. Experimental determination exhibits an outstanding evaporation rate of about 2.68 kg m−2 h−1 and a solar-vapor conversion efficiency of 94.54 % under 1 sun irradiation (1 kW m−2). Critically, GA/NL exhibits excellent stability of structure, salt resistance, and high desalination performance after ten evaporation cycles. These results indicate excellent mechanical properties for long-term desalination application, highlighting its exceptional potential as an efficient, durable interfacial solar steam generator.

Disciplines :

Materials science & engineering
Energy

Author, co-author :

Zhou, Wenfang; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China

Li, Xiaohan ; Université de Liège - ULiège > Urban and Environmental Engineering ; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China

Zhang, Nan; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China ; Tangshan Institute of Southwest Jiaotong University, Tangshan, China

Zhang, Zhaoli; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China

Yuan, Yangping; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China

Language :

English

Title :

Microbubble-based elastic graphene aerogel for efficient solar-driven interfacial evaporation

Publication date :

January 2026

Journal title :

Solar Energy Materials and Solar Cells

ISSN :

0927-0248

Publisher :

Elsevier B.V.

Volume :

294

Pages :

113933

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://api.elsevier.com/content/article/PII:S0927024825005343?httpAccept=text/xml

Funders :

NSCF - National Natural Science Foundation of China
Hebei Provincial Natural Science Foundation

Funding text :

This work was supported by the National Natural Science Foundation of China (No. 52378111 ), and the Hebei Natural Science Foundation, China (No. E2024105026 ).

Available on ORBi :

since 08 July 2026

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