Exploring the influence of carbonaceous material on the photocatalytic performance of the composites containing Bi–BiOBr and P25 TiO2 for NOx remediation
Author(s)
Type
Journal Article
Abstract
The Bi–BiOBr–P25 TiO2 composite material exhibits high and synergistic improvements in the photocatalytic activity for nitrogen oxides (NOx = NO + NO2) removal. Herein, the influence of adding carbonaceous material to this composite, namely graphene (G), graphene oxide (GO), carbon nanotubes (CNT), and buckminsterfullerene (F) is explored; all at 1 wt%. Samples are synthesised using a one-pot solvothermal method. The structural and morphological properties, composition, and photocatalytic performance of all samples are examined using scanning electron microscopy, carbon–hydrogen–nitrogen elemental analysis, high-resolution transmission electron microscopy, X-ray diffraction, Raman spectroscopy, attenuated total reflectance–Fourier transform infrared spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, X-ray photoelectron spectroscopy, N2 sorption at 77 K, photoluminescence spectroscopy, diffuse reflectance transient absorption spectroscopy), and photocatalytic testing against NOx gas in accordance with ISO protocol (22197-1:2016). Among the studied carbonaceous composites, the composite including GO shows the highest performance toward NOx remediation. For reactions in NO gas, it shows a combined higher NOx removal rate (21.9%) than its parent materials P25 (8.7%), Bi–BiOBr (6.5%), and GO (0%). For reactions in NO2 gas, it shows a higher NOx removal rate (≈15%) than its parent materials P25 (≈10%), Bi–BiOBr (≈5%), and GO (0%).
Date Issued
2025-08-04
Date Acceptance
2025-05-01
Citation
ChemPhysChem, 2025, 26 (15)
ISSN
1439-4235
Publisher
Wiley
Journal / Book Title
ChemPhysChem
Volume
26
Issue
15
Copyright Statement
© 2025 The Authors. ChemPhysChem published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/40367085
Subjects
BAND-GAP
bismuth oxybromides (BiOBr)
carbonaceous composites
Chemistry
Chemistry, Physical
DEGRADATION
FULLERENE
NANOTUBE
nitrogen oxide (NOx) removals
OPTICAL-PROPERTIES
OXYGEN VACANCIES
photocatalyses
Physical Sciences
Physics
Physics, Atomic, Molecular & Chemical
RAMAN-SPECTRA
REDUCED GRAPHENE OXIDE
REMOVAL ACTIVITY
Science & Technology
titanium dioxides (TiO2)
TITANIUM-DIOXIDE
Publication Status
Published
Coverage Spatial
Germany
Article Number
e202500237
Date Publish Online
2025-05-14