1. Photoelectrochemical Properties of Pb3Nb4O13 as a New Photoanode Material.
- Author
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Li Tian, Lingru Kong, Jingjing Ma, Jing Liu, Jiwei Wang, Hongliang Wang, Dongyuan Han, Yu Han, and Xiaoxing Fan
- Subjects
PHOTOELECTROCHEMISTRY ,METALLIC oxides ,ENERGY bands - Abstract
Pb
3 Nb4 O13 semiconductor films were prepared on fluorine-doped tin oxide (FTO) substrates by an electrophoretic deposition method. Their phase and morphology were revealed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively. Their photoelectrochemical (PEC) properties were carefully studied on the obtained multiple metal oxide Pb3 Nb4 O13 electrodes. The energy band structure of Pb3 Nb4 O13 was analyzed from the Mott-Schottky experimental plot. The results indicate that the energy band structure satisfies the requirements for photoelectrochemical water splitting. The designed material produced a photocurrent density of ~46.5 µA/cm² under the illumination of a full arc Xe light. Electrochemical impedance spectroscopy was performed to investigate the kinetics of the electrolyte-electrode interface. The monochromatic incident photon-to-electron current conversion efficiency (IPCE) was measured. Interfacing with the water-oxidation electrocatalyst Co-Pi enhanced the IPCE. [ABSTRACT FROM AUTHOR]- Published
- 2017
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