Journal
APPLIED SURFACE SCIENCE
Volume 607, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2022.154996
Keywords
(002) exposing facets; Photocatalytic degradation; Nitrobenzene; Charge carrier separation
Ask authors/readers for more resources
Photocatalytic degradation of nitrobenzene (NB) using monoclinic WO3 powders and films with different exposing ratios of (002) facets was investigated. The research found that the exposing ratio of (002) facets played a crucial role in improving the degradation efficiency.
Photocatalysis is a potential technology for de-nitro of nitro-aromatic contaminants in wastewater. In this work, monoclinic WO3 powders and films with different exposing ratios of (002) facets were simultaneously synthesized via a hydrothermal method. Their structures and photoelectrochemical properties were investigated, and the WO3 powders were further used for nitrobenzene (NB) degradation. The NB removal efficiency increased with the increase of the exposing ratio of (002) facets of WO3, and a high efficiency of 91.65 % removal of NB was reached in 3 h reaction. Degradation mechanism was clarified with the investigation of the intermediates and final products. The (002) facets of WO3 play a crucial role in facilitating the charge carrier separation, producing more center dot OH radicals, and thus increasing the efficiency for NB degradation. Moreover, the reaction kinetics analysis revealed that the first phenolation step of NB is the slowest step in the tandem photocatalytic degradation of NB.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available