Visible light driven water splitting in a molecular device with unprecedentedly high photocurrent density

Autor: Yan Gao, Xin Ding, Licheng Sun, Lei Wang, Jianhui Liu, Zhongkai Lu, Lin Li
Rok vydání: 2013
Předmět:
Zdroj: Journal of the American Chemical Society. 135(11)
ISSN: 1520-5126
Popis: A molecular water oxidation catalyst (2) has been synthesized and immobilized together with a molecular photosensitizer (1) on nanostructured TiO2 particles on FTO conducting glass, forming a photoactive anode (TiO2(1+2)). By using the TiO2(1+2) as working electrode in a three-electrode photoelectrochemical cell (PEC), visible light driven water splitting has been successfully demonstrated in a phosphate buffer solution (pH 6.8), with oxygen and hydrogen bubbles evolved respectively from the working electrode and counter electrode. By applying 0.2 V external bias vs NHE, a high photocurrent density of more than 1.7 mA·cm(-2) has been achieved. This value is higher than any PEC devices with molecular components reported in literature.
Databáze: OpenAIRE