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Su J, Geng P, Li X, et al. Novel phosphorus doped carbon nitride modified TiO₂ nanotube arrays with improved photoelectrochemical performance. Nanoscale. 2015;7(39):16282-9doi: 10.1039/c5nr04562b.
Su, J., Geng, P., Li, X., Zhao, Q., Quan, X., & Chen, G. (2015). Novel phosphorus doped carbon nitride modified TiO₂ nanotube arrays with improved photoelectrochemical performance. Nanoscale, 7(39), 16282-9. https://doi.org/10.1039/c5nr04562b
Su, Jingyang, et al. "Novel phosphorus doped carbon nitride modified TiO₂ nanotube arrays with improved photoelectrochemical performance." Nanoscale vol. 7,39 (2015): 16282-9. doi: https://doi.org/10.1039/c5nr04562b
Su J, Geng P, Li X, Zhao Q, Quan X, Chen G. Novel phosphorus doped carbon nitride modified TiO₂ nanotube arrays with improved photoelectrochemical performance. Nanoscale. 2015 Oct 21;7(39):16282-9. doi: 10.1039/c5nr04562b. PMID: 26376767.
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Nanoscale. 2015 Oct 21;7(39):16282-9. doi: 10.1039/c5nr04562b.

Novel phosphorus doped carbon nitride modified TiO₂ nanotube arrays with improved photoelectrochemical performance.

Nanoscale

Jingyang Su, Ping Geng, Xinyong Li, Qidong Zhao, Xie Quan, Guohua Chen

Affiliations

  1. Environmental Engineering Program, School of Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. [email protected].

PMID: 26376767 DOI: 10.1039/c5nr04562b

Abstract

Novel phosphorus-doped graphitic-carbon nitride (P-C3N4) modified vertically aligned TiO2 nanotube arrays (NTs) were designed and synthesized. They can significantly enhance the conduction and utilization of photogenerated charge carriers of TiO2 NTs. The heterostructure was successfully fabricated through a three-step process: electrochemical anodization and wet-dipping followed by thermal polymerization. The prepared P-C3N4/TiO2 NTs exhibit enhanced light-absorption characteristics and improved charge separation and transfer ability, thus resulting in a 3-fold photocurrent (1.98 mA cm(-2) at 0 V vs. Ag/AgCl) compared with that of pure TiO2 NTs (0.66 mA cm(-2) at 0 V vs. Ag/AgCl) in 1 M NaOH solution. The prepared P-C3N4/TiO2 NT photoelectrodes also present excellent photocatalytic and photoelectrocatalytic capabilities in the degradation of methylene blue (MB). The kinetic rate of P-C3N4/TiO2 NTs in the photoelectrocatalytic process for MB is 2.7 times that of pristine TiO2 NTs. Furthermore, the prepared sample was used as a photoanode for solar-driven water splitting, giving a H2 evolution rate of 36.6 μmol h(-1) cm(-2) at 1.0 V vs. RHE under simulated solar light illumination. This novel structure with a rational design for a visible light response shows potential for metal free materials in photoelectrochemical applications.

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