Integrated System for Photocatalytic Overall Water Splitting from Arid Air
H<sub>2</sub> produced through photocatalytic overall water splitting represents a sustainable energy. However, this approach is geographically constrained by freshwater availability, worsening the crisis in arid regions with abundant solar energy. This study introduces a MOF-801-hydrazine-SrTiO<sub>3</sub>:Al (MS) composite for in situ photocatalytic H<sub>2</sub> production using only atmospheric water and sunlight. The MS benefits from the hygroscopic MOF-801-hydrazine for water capture and the photocatalytic SrTiO<sub>3</sub>:Al for H<sub>2</sub> and O<sub>2</sub>. This system demonstrates effective in situ photocatalytic overall atmospheric water splitting in arid conditions, with a moisture adsorption capacity of 1.02 g<sub>H<sub>2</sub>O</sub> g<sub>MS</sub><sup>-1</sup> in 60 min at 30% relative humidity, and H<sub>2</sub> and O<sub>2</sub> production rates of 1033.1 and 494.3 μmol h<sup>-1</sup> g<sup><sub>S</sub>-1</sup>, respectively. This approach offers a novel solution for sustainable H<sub>2</sub> production using natural resources, crucial for water-scarce regions.
Authors
- Feng Liu (ORCID: https://orcid.org/0000-0001-6224-5167)
- Xiangjiu Guan (ORCID: https://orcid.org/0000-0003-1877-3282)
- Xinyuan Zhao (ORCID: https://orcid.org/0000-0002-8479-6581)
- Jinwen Shi (ORCID: https://orcid.org/0000-0001-7291-2840)
- Jie Huang (ORCID: https://orcid.org/0000-0001-5686-2003)
- Wenshuai Chen (ORCID: https://orcid.org/0000-0003-4428-1505)
- Maochang Liu (ORCID: https://orcid.org/0000-0002-2371-4060)
- Tian Li (ORCID: https://orcid.org/0000-0002-1087-0662)
- Xueli Yan
- Rui Zhao (ORCID: https://orcid.org/0000-0002-8138-1567)
Institutions
- Northeast Forestry University (CN)
- Xi’an Jiaotong-Liverpool University (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-12-04
- DOI
- https://doi.org/10.1021/acs.nanolett.4c04185
- Citations
- 11
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.13
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Fundamental Research Funds for the Central Universities
- Key Research and Development Projects of Shaanxi Province
- Science and Technology Program of Suzhou