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Fe(III) doped and grafted PbTiO3 film photocathode

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标题:Fe(III) doped and grafted PbTiO3 film photocathode with enhanced photoactivity for hydrogen production

 

作者:Yuxiang Hu, Wen Dong, Fengang Zheng, Liang Fang, and Mingrong Shen

 

论文摘要:The photoelectrochemical activity of the PbTiO3 film photocathode deposited on indium tin oxidecoated quartz substrate was significantly improved through modifying the film surface by both the
Fe(III) doping and grafting. Doping the PbTiO
3 with Fe(III) ions narrows its band gap thus
increases the visible light utilization, while the surface-grafted Fe(III) ions on the doped PbTiO
3
surface are helpful to improve the charge transfer on the photocathode/electrolyte interface.
Consequently, the photocurrent was increased from 38
lA/cm2 to 220 lA/cm2 under the irradiation
of 100 mW/cm
2 Xe lamp by using 0.1M Na2SO4 as an electrolyte and zero-potential versus saturated calomel as a reference electrode. The corresponding increase in open circuit voltage was 0.95–1.11 V.

 

原文链接:http://dx.doi.org/10.1063/1.4894097

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