TITLE:
Preparation of Corncob-Like WO3 Nanomaterials and Their Photocatalytic Treatment of Toluene
AUTHORS:
Jianhai Wang, Lu Lu, Bing Xu, Hongfeng Xu, Hongwen Liu
KEYWORDS:
WO3 Nanomaterials, Visiblelight, Photocatalytic Degradation, Toluene, In Situ FTIR
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.12 No.2,
February
29,
2024
ABSTRACT: Corn rod-like WO3 nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characterized by SEM, XRD, FTIR and UV-Vis-DRS. The WO3 materials were corn rod-like morphology with about 800 nm for length and 150 nm for diameter, especially there were plenty of corn particles (about 20 nm) on the surface of corn rods. The X-ray diffraction peaks of the products corresponded with WO3 standard card, and the characteristic peak of W-O bond was found in the infrared spectrum. The absorption band edge of the products was about 480 nm, indicating their potential visible-light-induced photocatalytic activity. In situ FTIR technology research showed that the prepared WO3 nanomaterials had visible photocatalytic activity to gas-phase toluene. After a photocatalytic reaction for 8 hours toluene was effectively degraded, and carboxylic acid and aldehyde could be regarded as the intermediate products, and CO2 was produced as the final product during the reaction process.