Cited by 122Metal-Organic Frameworks: Synthesis and ApplicationsAdvanced Photocatalysis TechniquesHydrogen Storage and Materials

Dual Modification of Metal–Organic Frameworks for Exceptional High Piezo‐Photocatalytic Hydrogen Production

Open access
Hu, Haijun, Li, Xiaoning, Zhang, Kailai, Yan, Ge, Kong, Weixiang, Qin, Anqi, Ma, Yali, Li, Aisen +4 more·2025·Advanced Materials

Abstract

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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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
Venue
Advanced Materials
Publisher
Wiley
Published
2025-03-30
Volume
37
Issue
20
Pages
e2419023-e2419023
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W4409023411
Cited by
122
References
42
Citations by year
2026: 85 · 2025: 37
FWCI
26.67
Type
journal article
Language
en
Open access
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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