Data · dataset · 2026
Mechanically Bending Centrosymmetric Nano-CeO<sub>2</sub> for Flexoelectric N<sub>2</sub> Fixation from Air
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Nitrogen fixation is vital for ecological balance and agricultural production, whereas the classic Haber–Bosch synthetic ammonia route is energy-intensive and environmentally detrimental.
Description
Mechanical energy is ubiquitous in nature, making its utilization for nitrogen fixation highly attractive. Flexoelectric materials can convert mechanical energy to electric energy under the excitation of mechanical strain gradients, yielding the novel catalysis technology flexocatalysis.
Flexocatalysis can occur almost in all catalysts. In this work, nano-CeO<sub>2</sub> with abundant oxygen vacancies are used as a flexocatalyst realized direct nitrogen fixation from air under vibration. The maximum NH<sub>4</sub><sup>+</sup> production rate reaches 181.24 μmol g<sup>–1</sup> h<sup>–1</sup>, which is 17.9 times that of the catalyst-free control.
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Density functional theory (DFT) analysis confirms that in-plane anisotropy-induced lattice distortion provides direct evidence for the flexoelectricity of CeO<sub>2</sub>. This work holds potential value for future applications of ambient mechanical vibration energy in flexocatalysis for direct nitrogen fixation from air.
Links
Where it is published
- DOI doi.org/10.1021/acs.jpclett.6c02532.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Density functional theory · Earth & Environmental Science · Ecology · Energy · Engineering · Evolutionary biology · Life Sciences
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34021728 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:group:3103 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3104 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:energy | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:engineering | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[method].local:method:dft | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['density functional theory'] |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |