Huang, XN
; Yang, LB
; Hao, S
; Zheng, BZ
; Yan, L
; Qu, FL
; Asiri, AM
; Sun, XP
摘要:
In this communication, we demonstrate the use of N-doped carbon dots (N-CDs) as a co-catalyst for hematite (alpha-Fe2O3) nanorod arrays on a Ti sheet for photoelectrochemical water oxidation. Under simulated light irradiation, the photocurrent density of the resulting N-CDs@alpha-Fe2O3/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 alpha-Fe2O3/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 alpha-Fe2O3, leading to the generation of more electron-hole pairs.
Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China;Southwest Univ Polit Sci & Law, Sch Criminal Invest, Chongqing 401120, Peoples R China;Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China;King Abdulaziz Univ, Dept Chem, Jeddah 21589, Saudi Arabia
dc.publisher
INORGANIC CHEMISTRY FRONTIERS
dc.identifier.year
2017
dc.identifier.issue
3
dc.identifier.volume
4
dc.date.issued
2017-03
dc.language.iso
英文
dc.description.abstract
In this communication, we demonstrate the use of N-doped carbon dots (N-CDs) as a co-catalyst for hematite (alpha-Fe2O3) nanorod arrays on a Ti sheet for photoelectrochemical water oxidation. Under simulated light irradiation, the photocurrent density of the resulting N-CDs@alpha-Fe2O3/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 alpha-Fe2O3/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 alpha-Fe2O3, leading to the generation of more electron-hole pairs.
dc.description.sponsorship
National Nature Science Foundation of China [21407109, 51401174, 21575137]; Natural Science Foundation of Chongqing [cstcjjA00026]