Highly textured boron/nitrogen co-doped TiO2 with honeycomb structure showing enhanced visible-light photoelectrocatalytic activity

6533b824fe1ef96bd1280af7

RESEARCH PRODUCT

Highly textured boron/nitrogen co-doped TiO2 with honeycomb structure showing enhanced visible-light photoelectrocatalytic activity

Maged F. Bekheet Pierre Millet Mikhael Bechelany Manuel Antuch Roman Viter Roman Viter Stéphanie Roualdes Waleed M.a. El Rouby Waleed M.a. El Rouby Philippe Miele Matthieu Weber Amr A. Nada Amr A. Nada

subject

Rutile [110]Materials science General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy symbols.namesake X-ray photoelectron spectroscopy TiO2 honeycomb structure [CHIM]Chemical Sciences Photocatalysis Boron Rietveld refinement Doping Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Chemical engineering chemistry Rutile Hydrogen production Photocatalysis symbols B/N co-doped 0210 nano-technology Raman spectroscopy Visible spectrum

description

International audience; In this work, we report a novel photocatalyst based on boron and nitrogen co-doped TiO2 rutile (1 1 0) honeycomb structures. The photocatalyst has been prepared by simultaneously oxidizing and doping a Ti-foil substrate at 750 degrees C. The unit cell volume and the crystallite size of grown TiO2 films were measured by Rietveld refinement analysis. The co-doping by boron and nitrogen was achieved simultaneously with the oxidation of the titanium, resulting in a rutile (1 1 0) textured TiO2 film. X-ray photoelectron spectroscopy analysis revealed the presence of Ti-O-N and Ti-O-B-N bonds, and the presence of crystal defects in the lattice was detected and displayed by Raman spectroscopy. The water photo-oxidation properties have been measured as well, and the photocurrent of the B/N co-doped rutile sample prepared reached 270 mu A/cm(2) at 1 V under visible light and was stable in time. The efficient visible light absorption properties of the fabricated nanomaterial were attributed to the presence of oxygen vacancies and the introduction of impurity levels, as well as to synergistic effects between the introduced boron and nitrogen elements. The results presented demonstrate a new route for the preparation of TiO2 based catalysts, and open prospects for the photocatalysis community.

year	journal	country	edition	language
2020-03-01	Applied Surface Science

https://doi.org/10.1016/j.apsusc.2019.144419