dc.contributor.author |
Shi, Run |
en |
dc.contributor.author |
Li, Zi |
en |
dc.contributor.author |
Yu, Huijun |
en |
dc.contributor.author |
Shang, Lu |
en |
dc.contributor.author |
Zhou, Chao |
en |
dc.contributor.author |
Waterhouse, Geoffrey |
en |
dc.contributor.author |
Wu, Li-Zhu |
en |
dc.contributor.author |
Zhang, Tierui |
en |
dc.date.accessioned |
2018-11-19T20:22:29Z |
en |
dc.date.issued |
2017-11 |
en |
dc.identifier.issn |
1864-5631 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/44480 |
en |
dc.description.abstract |
Carbon quantum dots (CQDs) have attracted widespread interest for photocatalytic applications, owing to their low cost and excellent electron donor/acceptor properties. However, their advancement as visible-light photosensitizers in CQDs/semiconductor nanocomposites is currently impaired by their poor quantum yields (QYs). Herein, we describe the successful fabrication of a series of nitrogen-doped CQDs (NCDs) with N/C atomic ratios ranging from 0.14-0.30. NCDs with the highest N-doping level afforded a remarkable external QY of 66.8 % at 360 nm, and outstanding electron transfer properties and photosensitization efficiencies when physically adsorbed on P25 TiO2 . A NCDs/P25-TiO2 hybrid demonstrated excellent performance for hydrogen evolution in aqueous methanol under both UV and visible-light illumination relative to pristine P25 TiO2 . Controlled nitrogen doping of CQDs therefore represents a very effective strategy for optimizing the performance of CQDs/semiconductor hybrid photocatalysts. |
en |
dc.format.medium |
Print-Electronic |
en |
dc.language |
eng |
en |
dc.relation.ispartofseries |
ChemSusChem |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.subject |
Photosensitivity Disorders |
en |
dc.subject |
Carbon |
en |
dc.subject |
Hydrogen |
en |
dc.subject |
Titanium |
en |
dc.subject |
Nitrogen |
en |
dc.subject |
Quantum Dots |
en |
dc.subject |
Ultraviolet Rays |
en |
dc.subject |
Catalysis |
en |
dc.subject |
Light |
en |
dc.subject |
Nanocomposites |
en |
dc.title |
Effect of Nitrogen Doping Level on the Performance of N-Doped Carbon Quantum Dot/TiO2 Composites for Photocatalytic Hydrogen Evolution. |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1002/cssc.201700943 |
en |
pubs.issue |
22 |
en |
pubs.begin-page |
4650 |
en |
pubs.volume |
10 |
en |
dc.rights.holder |
Copyright: The author |
en |
dc.identifier.pmid |
28671326 |
en |
pubs.end-page |
4656 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Research Support, Non-U.S. Gov't |
en |
pubs.subtype |
Journal Article |
en |
pubs.elements-id |
644682 |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Chemistry |
en |
dc.identifier.eissn |
1864-564X |
en |
pubs.record-created-at-source-date |
2017-07-04 |
en |
pubs.dimensions-id |
28671326 |
en |