Abstract

Currently, photocatalyst materials have gained considerable attraction because of very rich economic performance of decomposition of highly toxic organic compound to lower toxic composition. The effort of this work was paid to study the effect of sonochemical ultrasonic irradiation time on the relevant properties of visible-light-driven bismuth vanadate (BiVO₄) photocatalyst without any further thermal treatment process. The chemical bonding of BiVO₄ nanopowder was investigated by Fourier transform infrared (FTIR) and Raman spectrometer technique. Meanwhile their structure was characterized by X-ray diffraction technique (XRD). Field emission scanning electron microscope (FE-SEM) was used to observe particle morphology and chemical compositions was investigated by Energy-dispersive X-ray spectroscopy (EDX). Photocatalytic performance of BiVO₄ nanopowder was studied by decomposition of organic dye as organic pollutant model using visible light to excite photocatalyst materials. It was found that sonochemical irradiation time supplied during chemical process can effectively expedite the formation of BiVO₄ nanoparticle. The optimized condition to obtain the product with enhanced photocatalytic performance of 60% decomposition is achieved as the sample was prepared at 40 min ultrasonic irradiation.

摘要

当前，由于高毒性有机化合物分解成较低毒性组成的非常丰富的经济性能，光催化剂材料已经获得了相当大的吸引力。这项工作的努力是为了研究声化学超声辐照时间对可见光驱动的钒酸铋（BiVO ₄）光催化剂的相关性能的影响，而无需任何进一步的热处理过程。BiVO ₄的化学键通过傅里叶变换红外（FTIR）和拉曼光谱仪技术研究了纳米粉末。同时用X射线衍射技术（XRD）对它们的结构进行了表征。使用场发射扫描电子显微镜（FE-SEM）观察颗粒形态，并通过能量色散X射线光谱（EDX）研究化学成分。通过利用可见光激发光催化剂材料分解有机染料作为有机污染物模型，研究了BiVO ₄纳米粉体的光催化性能。发现在化学过程中提供的声化学辐照时间可以有效地加速BiVO ₄的形成。纳米颗粒。当在40分钟的超声辐射下制备样品时，获得了获得具有60％分解的增强的光催化性能的产品的最佳条件。