Preparation of Corncob-Like WO₃ Nanomaterials and Their Photocatalytic Treatment of Toluene  

作　　者：Jianhai Wang Lu Lu Bing Xu Hongfeng Xu Hongwen Liu Jianhai Wang;Lu Lu;Bing Xu;Hongfeng Xu;Hongwen Liu(Liaoning Provincial Key Laboratory of Metal Air New Energy Battery, Dalian Jiaotong University, Dalian, China;Dalian Ecological Environment Monitoring Center of Liaoning Province, Dalian, China)

机构地区：[1]Liaoning Provincial Key Laboratory of Metal Air New Energy Battery, Dalian Jiaotong University, Dalian, China [2]Dalian Ecological Environment Monitoring Center of Liaoning Province, Dalian, China

出　　处：《Journal of Materials Science and Chemical Engineering》2024年第2期84-93,共10页材料科学与化学工程（英文）

摘　　要：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.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.

关 键 词：WO₃ Nanomaterials Visiblelight Photocatalytic Degradation TOLUENE In Situ FTIR 

分 类 号：O62[理学—有机化学]