N-Doped carbon dots: a metal-free co-catalyst on hematite nanorod arrays toward efficient photoelectrochemical water oxidation. Issue 3 (23rd January 2017)

• Record Type: Journal Article
• Authors: Huang, Xueni; Yang, Libin; Hao, Shuai; Zheng, Baozhan; Yan, Lei; Qu, Fengli; Asiri, Abdullah M.; Sun, Xuping
• Is Part Of: Inorganic chemistry frontiers. Volume 4:Issue 3(2017)
• Page Start: 537
• Page End: 540
• Publication Date: 2017-01-23
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6qi00517a
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : N-Doped carbon dots (N-CDs) have been demonstrated as an effective co-catalyst for α-Fe2 O3 nanorod arrays on a Ti sheet for photoelectrochemical water oxidation. Abstract : In this communication, we demonstrate the use of N-doped carbon dots (N-CDs) as a co-catalyst for hematite (α-Fe2 O3 ) nanorod arrays on a Ti sheet for photoelectrochemical water oxidation. Under simulated light irradiation, the photocurrent density of the resulting N-CDs@α-Fe2 O3 /Ti as a photoanode exhibits a 3.4 times increase with a 280 mV cathode shift of the onset potential relative to that of pristine α-Fe2 O3 /Ti, with excellent photostability. The up-conversion fluorescent properties of N-CDs enable the absorption of longer wavelength irradiation with emission of short wavelength light to excite α-Fe2 O3, leading to the generation of more electron–hole pairs.