Constructing Atomic Heterometallic Sites in Ultrathin Nickel-Incorporated Cobalt Phosphide Nanosheets via a Boron-Assisted Strategy for Highly Efficient Water Splitting.
Zhao, Y
Zhang, J
Xie, Y
Sun, B
Jiang, J
Jiang, W-J
Xi, S
Yang, HY
Yan, K
Wang, S
Guo, X
Li, P
Han, Z
Lu, X
Liu, H
Wang, G
- Publisher:
- American Chemical Society (ACS)
- Publication Type:
- Journal Article
- Citation:
- Nano letters, 2021, 21, (1), pp. 823-832
- Issue Date:
- 2021-01-05
Closed Access
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Zhao-2021-Constructing-atomic-heterometallic-.pdf | Published version | 8.67 MB | Adobe PDF |
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author | Zhao, Y | |
dc.contributor.author |
Zhang, J https://orcid.org/0000-0001-5476-0134 |
|
dc.contributor.author | Xie, Y | |
dc.contributor.author |
Sun, B https://orcid.org/0000-0002-4365-486X |
|
dc.contributor.author | Jiang, J | |
dc.contributor.author | Jiang, W-J | |
dc.contributor.author | Xi, S | |
dc.contributor.author | Yang, HY | |
dc.contributor.author | Yan, K | |
dc.contributor.author | Wang, S | |
dc.contributor.author |
Guo, X https://orcid.org/0000-0001-7771-0463 |
|
dc.contributor.author | Li, P | |
dc.contributor.author | Han, Z | |
dc.contributor.author | Lu, X | |
dc.contributor.author |
Liu, H https://orcid.org/0000-0003-0266-9472 |
|
dc.contributor.author |
Wang, G https://orcid.org/0000-0003-4295-8578 |
|
dc.date.accessioned | 2021-02-05T09:34:34Z | |
dc.date.available | 2021-02-05T09:34:34Z | |
dc.date.issued | 2021-01-05 | |
dc.identifier.citation | Nano letters, 2021, 21, (1), pp. 823-832 | |
dc.identifier.issn | 1530-6984 | |
dc.identifier.issn | 1530-6992 | |
dc.identifier.uri | http://hdl.handle.net/10453/145865 | |
dc.description.abstract | Identification of active sites for highly efficient catalysts at the atomic scale for water splitting is still a great challenge. Herein, we fabricate ultrathin nickel-incorporated cobalt phosphide porous nanosheets (Ni-CoP) featuring an atomic heterometallic site (NiCo<sub>16-<i>x</i></sub>P<sub>6</sub>) via a boron-assisted method. The presence of boron induces a release-and-oxidation mechanism, resulting in the gradual exfoliation of hydroxide nanosheets. After a subsequent phosphorization process, the resultant Ni-CoP nanosheets are implanted with unsaturated atomic heterometallic NiCo<sub>16-<i>x</i></sub>P<sub>6</sub> sites (with Co vacancies) for alkaline hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The optimized Ni-CoP exhibits a low overpotential of 88 and 290 mV at 10 mA cm<sup>-2</sup> for alkaline HER and OER, respectively. This can be attributed to reduced free energy barriers, owing to the direct influence of center Ni atoms to the adjacent Co/P atoms in NiCo<sub>16-<i>x</i></sub>P<sub>6</sub> sites. These provide fundamental insights on the correlation between atomic structures and catalytic activity. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | American Chemical Society (ACS) | |
dc.relation | http://purl.org/au-research/grants/arc/DP170100436 | |
dc.relation | http://purl.org/au-research/grants/arc/DP180102297 | |
dc.relation | http://purl.org/au-research/grants/arc/DP200101249 | |
dc.relation.ispartof | Nano letters | |
dc.relation.isbasedon | 10.1021/acs.nanolett.0c04569 | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject.classification | Nanoscience & Nanotechnology | |
dc.title | Constructing Atomic Heterometallic Sites in Ultrathin Nickel-Incorporated Cobalt Phosphide Nanosheets via a Boron-Assisted Strategy for Highly Efficient Water Splitting. | |
dc.type | Journal Article | |
utslib.citation.volume | 21 | |
utslib.location.activity | United States | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Science | |
pubs.organisational-group | /University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences | |
pubs.organisational-group | /University of Technology Sydney | |
utslib.copyright.status | closed_access | * |
dc.date.updated | 2021-02-05T09:34:15Z | |
pubs.issue | 1 | |
pubs.publication-status | Published | |
pubs.volume | 21 | |
utslib.citation.issue | 1 |
Abstract:
Identification of active sites for highly efficient catalysts at the atomic scale for water splitting is still a great challenge. Herein, we fabricate ultrathin nickel-incorporated cobalt phosphide porous nanosheets (Ni-CoP) featuring an atomic heterometallic site (NiCo16-xP6) via a boron-assisted method. The presence of boron induces a release-and-oxidation mechanism, resulting in the gradual exfoliation of hydroxide nanosheets. After a subsequent phosphorization process, the resultant Ni-CoP nanosheets are implanted with unsaturated atomic heterometallic NiCo16-xP6 sites (with Co vacancies) for alkaline hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The optimized Ni-CoP exhibits a low overpotential of 88 and 290 mV at 10 mA cm-2 for alkaline HER and OER, respectively. This can be attributed to reduced free energy barriers, owing to the direct influence of center Ni atoms to the adjacent Co/P atoms in NiCo16-xP6 sites. These provide fundamental insights on the correlation between atomic structures and catalytic activity.
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