Enhanced Visible Light Photoelectrochemical Performances with Nitrogen Doped TiO_2 Nanowire Arrays

Authors

Xiao-jun LV, Department ofChemistry,Tsinghua University,Beijing100084,China;
Yue-ming LI, Department ofChemistry,Tsinghua University,Beijing100084,China;
Hao ZHANG, Department ofChemistry,Tsinghua University,Beijing100084,China;
Da CHEN, Department ofChemistry,Tsinghua University,Beijing100084,China;
Hensel Jennifer, Department ofChemistry and Biochemistry,University ofCalifornia,Santa Cruz,California95064,USA;
Z Zhang Jin, Department ofChemistry and Biochemistry,University ofCalifornia,Santa Cruz,California95064,USA;
Jing-hong LI, Department ofChemistry,Tsinghua University,Beijing100084,China;

Corresponding Author

Z Zhang Jin;
Jing-hong LI

Abstract

Self-organized anodic anatase TiO2nanowire arrays doped with nitrogen have been successfully fabri-cated and their photoelectrochemical(PEC) properties have been characterized and found to be substantially im-proved compared to undoped nanowires or commercial P25 nanoparticles.Photocurrent measured with monochro-matic incident light showed that the incident photon-to-current efficiency(IPCE,%) values of nanowire arrayelectrodes with or without N-doping were obviously higher than that of commercial P25 nanoparticle electrodes,and nitrogen-doped TiO2nanowire arrays(NTNA) had noticeable absorption in the visible region.The NTNAelectrodes showed the highest photocurrent density and power conversion efficiency under 100 mW/cm2visiblelight illumination.A maximumolphotoconversion efficiency of 0.52% was achieved for the NTNA sample at anapplied potential of 0.09 V versus Ag/AgCl(saturated KCl) electrode under visible illumination,much higherthan that of the undoped nanowire and commercial P25 nanoparticle electrodes.These results demonstrate thatNTNA thin films are promising for enhancing the photoresponse and effectively improving PEC performances ofnanostructured TiO2in the visible region for different applications including solar hydrogen generation.

Keywords

nitrogen doped, TiO2nanowire arrays, visible light, photoelectrochemical performances, photoca-talysis

DOI Link

https://doi.org/10.61558/2993-074X.2020

Publication Date

2009-11-28

Online Available Date

2009-11-28

Revised Date

2009-11-28

Received Date

2009-11-28

Recommended Citation

Xiao-jun LV, Yue-ming LI, Hao ZHANG, Da CHEN, Hensel Jennifer, Z Zhang Jin, Jing-hong LI. Enhanced Visible Light Photoelectrochemical Performances with Nitrogen Doped TiO_2 Nanowire Arrays[J]. Journal of Electrochemistry, 2009 , 15(4): 432-440.
DOI: 10.61558/2993-074X.2020
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss4/12