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Dual Modification of Metal–Organic Frameworks for Exceptional High Piezo‐Photocatalytic Hydrogen Production
Open accessAbstract
Metal–organic frameworks (MOFs) face significant challenges in photocatalysis due to severe carrier recombination. Here, a novel approach is presented that incorporates ─NH 2 groups and Cu ions onto MOFs with a MIL‐125 skeleton, forming NH 2‐MIL‐125 and Cu‐NH 2‐MIL‐125. This modification effectively enhances the polarity of MOFs, evidenced by significantly increased d 33 values (from 1.69 to 26.21 pm/V) and notable higher dipole moments (from 6.60 to 25.99 D). Notably, it's the first demonstration of boosting MOFs piezoelectricity via a dual modulation strategy. Moreover, the polarity can be further amplified by ultrasonic vibration based on the positive piezoelectric effect, which is justified by in situ Raman spectra, COMSOL simulations, and DFT calculations, by taking into account the applied pressure. The positive impact of introduced piezoelectric effect in facilitating charge separation and transfer of Cu‐NH 2‐MIL‐125, proved by enhanced current response. Consequently, through coupling piezocatalysis and photocatalysis, the H 2 production rate of Cu‐NH 2‐MIL‐125 can be significantly enhanced to ≈2884.2 µmol·g−1·h−1, 2.76 and 9.92 times higher than that of NH 2‐MIL‐125 and MIL‐125, respectively, ranking first in all reported MOF‐based piezo‐photocatalysts. This research demonstrates the prospective opportunity for alleviating the severe carriers recombination problem for MOFs through the implantation of piezoelectric field driving force.
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Metadata
- Authors
- Hu, H., Li, X., Zhang, K., Yan, G., Kong, W., Qin, A., Ma, Y., Li, A., Wang, K., Huang, H., Sun, X., & Ma, T.
- Affiliations
- Liaoning University (CN)
- Australian Research Council (AU)
- Shenyang University of Chemical Technology (CN)
- Liaocheng University (CN)
- China University of Geosciences (Beijing) (CN)
- Corresponding author
- Sun, Xiaodong
- Ma, Tianyi
- ORCID
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2025-03-30
- Volume
- 37
- Issue
- 20
- Pages
- e2419023-e2419023
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- PMC
- PMC12087703
- OpenAlex
- W4409023411
- Cited by
- 122
- References
- 42
- Citations by year
- 2026: 85 · 2025: 37
- FWCI
- 26.67
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Advanced Materials (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (22101105, 52071171, 52202248, 22401198)
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Organic Frameworks: Synthesis and Applications
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
- Keywords
- metal-organic frameworks, piezo-photocatalysis, hydrogen production, MIL-125(Ti), amine functionalization, copper doping, piezoelectric properties, charge recombination, charge separation, ultrasonic vibration, piezoelectric field, dipole moment, piezoelectric coefficient
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