Tailoring surface charge distribution of carbon dots through heteroatoms for enhanced visible-light photocatalytic activity

We have developed a facile and effective method to prepare chlorine and phosphorus-functionalized carbon dots (CDs) and investigated what the roles of these heteroatoms are played in carbon dot properties. Our researches suggested that Cl and P elements incorporated in superficial carbon atoms could...

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Bibliographic Details
Published in:Carbon (New York) 2016-08, Vol.105, p.484-489
Main Authors: Hu, Shengliang, Chang, Qing, Lin, Kui, Yang, Jinlong
Format: Article
Language:English
Subjects:
Carbon dots
Chlorine
Phosphorus
Photocatalysis
Surface groups
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Summary:We have developed a facile and effective method to prepare chlorine and phosphorus-functionalized carbon dots (CDs) and investigated what the roles of these heteroatoms are played in carbon dot properties. Our researches suggested that Cl and P elements incorporated in superficial carbon atoms could tailor charge distribution on the surface of CDs, facilitating more effective photogenerated charge separation. Therefore, Cl and P-functionalized CDs show much higher photocatalytic activities than Cl and P-free CDs and commercial TiO2. This work gains an insight into how to effectively tune the photogenerated charge behaviors of CDs to achieve excellent properties.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2016.04.078