Nano-Micro Letters

BiVO4/TiO2 (N2) Nanotubes Heterojunction Photoanode for Highly Efficient Photoelectrocatalytic Applications

Rui Wang1, Jing Bai1,*, Yunpo Li1, Qingyi Zeng1, Jinhua Li1, Baoxue Zhou1,2,*

Abstract
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Nano-Micro Lett. (2017) 9: 14

First Online: 09 November 2016 (Article)

DOI: 10.1007/s40820-016-0115-3

 

Abstract

 


Schematic diagram of the main processes for the fabrication of the BiVO4/TiO2 NTs photoanodes.

We report the development of a novel visible response BiVO4/TiO2(N2) nanotubes photoanode for photoelectrocataltyic (PEC) applications. The nitrogen treated TiO2 nanotube shows a high carrier concentration rate thus resulting in a high efficient charge transportation and low electron-hole recombination in the TiO2-BiVO4. Therefore, the BiVO4/TiO2(N2) NTs photoanode enabled with a significantly enhanced photocurrent of 2.73 mA cm-2 (at 1 V vs. Ag/AgCl) and a degradation efficiency in the oxidation of dyes under visible light. FESEM, XRD, EDX, and UV-Vis absorption spectrum were conducted to characterize the photoanode and demonstrated the presence of both metal oxides as a junction composite.


 

Keywords

BiVO4; TiO2(N2) nanotube; Heterojunction; Photoelectrocataltyic; Degradation of dyes

 

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