Al-Areqi Niyazi A S, Umair Muhamad, Senan Ahmed M, Al-Alas Ahlam, Alfaatesh Afraah M A, Beg Saba, Khan Kashif-Ur-Rehman, Korma Sameh A, El-Saadony Mohamed T, Alshehri Mohammed A, Ahmed Ahmed Ezzat, Abbas Ahmed M, Alokab Riyad A, Cacciotti Ilaria
Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz 6803, Yemen.
Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
Nanomaterials (Basel). 2022 Apr 18;12(8):1383. doi: 10.3390/nano12081383.
With an increasing demand for industrial dyes in our daily lives, water conditions have become worse. Recently, the removal of such environmentally hazardous pollutants from wastewaters through photocatalytic degradation has been drawing increased attention. Three mesoporous nanophases of BiFeVOx.y as (BiFeVO) visible light photocatalysts were synthesized in this study using ethylene glycol-citrate sol-gel synthesis combined with microwave- assisted calcination. X-ray diffraction (XRD), differential thermal analysis (DTA), FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDS), nitrogen adsorption-desorption isotherms, and UV-Vis diffuse reflectance spectrophotometry (UV-Vis/DRS) were used to characterize the BiFeVOx.y photocatalysts. The visible light-induced photocatalytic activities of the BiFeVOx.y phases were evaluated by the degradation of methylene blue (MB) dye in aqueous solution at pH ~10.0. The results of this study show that the combination of doping strategy with the utilization of advanced synthesis methods plays an important role in improving the structure and surface properties of BiFeVOx.y phases, and thereby enhancing their adsorption and photocatalytic efficiencies. The synthesized mesoporous tetragonal γ-BiFeVOx.y nanophase has been proven to be a potential visible-light photocatalyst for the degradation of organic dyes.
随着我们日常生活中对工业染料的需求不断增加，水质状况变得更糟。最近，通过光催化降解从废水中去除此类对环境有害的污染物受到了越来越多的关注。本研究采用乙二醇 - 柠檬酸盐溶胶 - 凝胶合成法结合微波辅助煅烧，合成了三种介孔纳米相的BiFeVOx.y作为（BiFeVO）可见光光催化剂。利用X射线衍射（XRD）、差热分析（DTA）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、扫描电子显微镜结合能量色散X射线光谱仪（SEM - EDS）、氮吸附 - 脱附等温线以及紫外 - 可见漫反射分光光度法（UV - Vis/DRS）对BiFeVOx.y光催化剂进行了表征。通过在pH约为10.0的水溶液中降解亚甲基蓝（MB）染料来评估BiFeVOx.y相的可见光诱导光催化活性。本研究结果表明，掺杂策略与先进合成方法的结合在改善BiFeVOx.y相的结构和表面性质方面起着重要作用，从而提高其吸附和光催化效率。已证明合成的介孔四方γ - BiFeVOx.y纳米相是一种用于降解有机染料的潜在可见光光催化剂。
