19November2018

Nano-Micro Letters

Efficient Photoelectrochemical Water Splitting by g-C3N4/TiO2 Nanotube Array Heterostructures

Changhai Liu1, Fang Wang1, Jin Zhang1, Ke Wang1, Yangyang Qiu1, Qian Liang2, Zhidong Chen2, *

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Nano-Micro Lett. (2018) 10: 37

First Online: 15 January 2018 (Article)

DOI:10.1007/s40820-018-0192-6

*Corresponding author. E-mail: zdchen@cczu.edu.cn

 

Abstract

 


Fig. 4 Number of nanotubes with different rin/rout values for TNTAs (black) and g-C3N4/TNTAs (red)

Well-ordered TiO2 nanotube arrays (TNTAs) decorated with graphitic carbon nitride (g-C3N4) were fabricated by anodic oxidization and calcination process. First, TNTAs were prepared via the anodic oxidation of Ti foil in glycerol solution containing fluorinion and 20% deionized water. Subsequently, g-C3N4 film was hydrothermally grown on TNTAs via the hydrogen-bonded cyanuric acid melamine supramolecular complex. The results showed that g-C3N4 was successfully decorated on the TNTAs and the g-C3N4/TNTAs served as an efficient and stable photoanode for photoelectrochemical water splitting. The facile deposition method enables the fabrication of efficient and low-cost photoanodes for renewable energy applications.


 

Keywords

TiO2 nanotube arrays; Graphitic carbon nitride (g-C3N4); Heterojunction; Photoelectrochemical; Water splitting

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