摘要
In this communication,we demonstrate the use of N-doped carbon dots(N-CDs)as a co-catalyst for hematite(α-Fe_(2)O_(3))nanorod arrays on a Ti sheet for photoelectrochemical water oxidation.Under simulated light irradiation,the photocurrent density of the resulting N-CDs@α-Fe_(2)O_(3)/Ti as a photoanode exhibits a 3.4 times increase with a 280 mV cathode shift of the onset potential relative to that of pristineα-Fe_(2)O_(3)/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 exciteα-Fe_(2)O_(3),leading to the generation of more electron-hole pairs.
基金
National Nature Science Foundation of China(21407109,51401174,21575137)
Natural Science Foundation of Chongqing(cstcjjA00026)。
