Cited by 25Solar-Powered Water Purification MethodsAdvanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar Cells

A photothermal-photocatalytic layered aerogel for harvesting water and hydrogen from seawater

Ma, Ningning, Dong, Liang, Zhang, Tuo, Xie, Ning’er, Tian, Li, Zhang, Zheng, Guan, Xiangjiu, Guo, Liejin·2025·Journal of Colloid and Interface Science

Abstract

Photocatalytic hydrogen production from seawater holds potential to decrease the use of fresh or pre-treated water. However, direct photocatalytic splitting of seawater currently encounters challenges such as corrosion of catalyst and unsatisfied stability. To address these issues, we have integrated seawater desalination with photocatalytic water vapor splitting for in-situ hydrogen production, while also obtaining freshwater. This approach avoids direct contact between photocatalytic materials and seawater solution, effectively mitigating corrosion and enhancing hydrogen production performance. Based on this design, we constructed a layered structure of photothermal-photocatalytic aerogel material via in-situ synthesis method and designed corresponding device for freshwater-hydrogen coproduction, demonstrating notable hydrogen production rate of 17.94 mmol m-2 h-1 with solar-to-hydrogen efficiency of 0.12 ± 0.02 % and freshwater production rate of 0.92 kg m-2 h-1. This work demonstrates significant practical value in photothermal-photocatalysis field, potentially addressing the problem of energy and water scarcity in off-grid region.

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Crossref · 10.1016/j.jcis.2025.02.102

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  • The performance surpasses previously reported aerogel-based platforms, including directional pore-structured carbonized wood (39.98 mmol m−2 h−1) and photothermal-photocatalytic layered aerogels (17.94 mmol m−2 h−1).

    “Additionally, the performance surpasses that of previously reported aerogel-based platforms, including the photocatalytic system consisting of directional pore-structured carbonized wood (39.98 mmol m 2 h 1 ) 64 and photothermalphotocatalytic layered aerogels (17.94 mmol m 2 h 1 ), 65 although it remains slightly lower than the most recent advanced designs (163 mmol m 2 h 1 ). 63”

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Authors
Ma, N., Dong, L., Zhang, T., Xie, N., Tian, L., Zhang, Z., Guan, X., & Guo, L.
Affiliations
State Key Laboratory of Multiphase Flow in Power Engineering (CN)
Corresponding author
  • Guan, Xiangjiu
  • Guo, Liejin
Venue
Journal of Colloid and Interface Science
Publisher
Elsevier BV
Published
2025-06
Volume
687
Pages
573-581
ISSN
0021-9797 (ISSN-L)
OpenAlex
W4407625401
Cited by
25
References
61
Citations by year
2026: 15 · 2025: 10
FWCI
3.44
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Colloid and Interface Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (52376209, 52488201)
  • Fundamental Research Funds for the Central Universities
  • China Postdoctoral Science Foundation (2020M673386, 2020T130503)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Solar-Powered Water Purification Methods
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
Keywords
seawater desalination, photocatalytic hydrogen evolution, solar hydrogen production, in situ synthesis, solar-to-hydrogen efficiency

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