Cited by 217Metal-Organic Frameworks: Synthesis and ApplicationsAdvanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar Cells

Ti-based MOFs: New insights on the impact of ligand composition and hole scavengers on stability, charge separation and photocatalytic hydrogen evolution

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Wang, Jia, Cherevan, Alexey S., Hannecart, Celine, Naghdi, Shaghayegh, Nandan, Sreejith P., Gupta, Tushar, Eder, Dominik·2021·Applied Catalysis B: Environmental

Abstract

We synthesized a series of isostructural MIL-125-Ti with various terephthalic: amino-terephthalic acid ratios and evaluated their photostability and performance for photocatalytic hydrogen evolution in aqueous solutions with different hole scavengers. We demonstrate that the commonly used triethanolamine corroded the MOFs under photocatalytic conditions, in contrast to methanol. The combination of MIL-125-Ti and methanol outperformed the photocatalytic activity of NH2-MIL-125-Ti by 45 times under broad UV irradiation. Photoluminescence spectroscopy under simulated photocatalytic conditions and in solid-state as well as time-resolved emission studies reveal that the holes residing in the metal-oxo cluster can be effectively scavenged by methanol, leading to high HER activity, while the holes residing in the NH2-groups in the ligand favour charge recombination and are thus detrimental to the photocatalytic performance. The mixed-ligand MOFs follow a dual-excitation pathway, introducing new states and transitions. These results are expected to advance our understanding of MOF-based photocatalysis.

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  • Graphene-based nanomaterials are competitive advanced carriers because of efficient electron transfer, high surface area, and excellent conductivity.

    “Among the various carbon nanomaterials, graphene-based nanomaterials are competitive advanced carriers because of their efficient electron transfer, high surface area, and excellent conductivity [23-25].”

    From Nitrogen-doped graphene aerogel-supported ruthenium nanocrystals for pH-universal hydrogen evolution reaction (2022) · cites this paper as [23]

    The Introduction discusses the large surface area and charge-transfer properties of metal-organic frameworks, not graphene-based carriers. Searches for graphene, electron transfer, and conductivity found graphene-related titles in the References but no passage in this paper stating the claimed combination of properties. (LLM, conf=0.75)

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Authors
Wang, J., Cherevan, A. S., Hannecart, C., Naghdi, S., Nandan, S. P., Gupta, T., & Eder, D.
Affiliations
TU Wien (AT)
Corresponding author
Eder, Dominik
Venue
Applied Catalysis B: Environmental
Publisher
Elsevier BV
Published
2021-04
Volume
283
Pages
119626
ISSN
0926-3373 (ISSN-L)
OpenAlex
W3092763106
Cited by
217
References
70
Citations by year
2026: 27 · 2025: 29 · 2024: 46 · 2023: 44 · 2022: 47 · 2021: 24
FWCI
18.12
Type
journal article
Language
en
Open access
Locations
Applied Catalysis B: Environmental (publishedVersion, cc-by-nc-nd)
Funders
China Scholarship Council
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 › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
Keywords
MIL-125(Ti), metal-organic frameworks, photocatalytic hydrogen evolution, hole scavengers, methanol, triethanolamine, photostability, charge separation, charge recombination, metal-oxo clusters, photoluminescence, time-resolved emission, UV irradiation

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