Data · dataset · 2026
Effect and Mechanism of Surface Functional Group Modification on Photocatalytic Hydrogen Production Performance of Ti-MOF
Listed in ScienceDB
Surface conjugation engineering is an efficient strategy to enhance the photocatalytic performance of MOFs.
Description
In this work, MIL-125(Ti) was chosen as the parent framework, and three Ti-MOF nanocatalysts with distinct surface functional groups (amino, imine, amide) were synthesized through a post-synthetic modification method. All of the above conjugated surface structures were tested to see how they changed the photophysical properties and hydrogen-evolution activity.
Spectroscopic characterization revealed that the amide-functionalized (CONH2-MIL-125(Ti)) exhibited the highest light-harvesting capacity and the longest fluorescence lifetime (89.65 ns). The p-π conjugation effect effectively enhances the electronic properties of the material and promotes the separation of photogenerated charge carriers. Photocatalytic hydrogen evolution performance displayed that CONH2-MIL-125(Ti) exhibited the best performance, and the hydrogen evolution rates increased by 25.5% and 73.4% over those of CN-MIL-125(Ti) and NH2-MIL-125(Ti), respectively.
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Under the mild alkaline conditions (pH 8), abundant protons on the reaction interface accelerate the hydrogen evolution kinetics. Benefiting from the extended p-π conjugated system, amide grafting simultaneously strengthens light absorption and suppresses charge recombination. Therefore, the amide modification strategy provides a reliable approach to regulate and improve the photocatalytic hydrogen evolution performance of Ti-based MOFs.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.011gw ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.011gw | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |