Elias Md, Alam Rowshon, Sarker Sebak, Hossain Mohammad Awlad
Department of Chemistry, Jagannath University, Dhaka-1100, Dhaka, Bangladesh.
Heliyon. 2024 Jul 25;10(15):e34921. doi: 10.1016/j.heliyon.2024.e34921. eCollection 2024 Aug 15.
Bismuth oxyfluoride (BiOF) is an emerging class of material with notable chemical stability, unique layered structure and striking energy band structure. Bi-based semiconductor materials and reduced graphene oxides (rGOs) have attracted considerable attention due to their broad spectrum of potential applications. Herein, we successfully synthesised an efficient photocatalyst comprising BiOF-rGO nanocomposites with embedded Ag nanoparticles using a simple hydrothermal method. The synthesised nanocomposites were characterised through Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy and ultraviolet (UV)-visible spectroscopy. The XRD results indicated the crystalline structures of the BiOF, Ag-doped BiOF and Ag-doped BiOF-rGO composites. Photocatalytic activity assessments focused on the degradation of methylene blue (MB) and methyl orange (MO) dyes under UV-light and sunlight irradiation. The Ag-doped BiOF-rGO composite exhibited significantly enhanced degradation efficiency, achieving 61.81 % and 74.25 % degradation of MB and MO, respectively, after 300 min under UV-light irradiation. On the contrary, pure BiOF demonstrated only 17.63 % and 48.29 % degradation for MB and MO, respectively, under similar conditions. Furthermore, under sunlight irradiation, the Ag-doped BiOF-rGO composite exhibited an MB removal efficiency of 43.87 % after 300 min, whereas pure BiOF showed only 27.47 % under identical conditions. These results underscore the potential of Ag-doped BiOF-rGO composites as highly efficient and adaptable photocatalysts for the photodegradation of organic dyes in industrial wastewater.
氟氧化铋（BiOF）是一类新兴材料，具有显著的化学稳定性、独特的层状结构和引人注目的能带结构。铋基半导体材料和还原氧化石墨烯（rGO）因其广泛的潜在应用而备受关注。在此，我们使用简单的水热法成功合成了一种包含嵌入银纳米颗粒的BiOF-rGO纳米复合材料的高效光催化剂。通过傅里叶变换红外光谱、X射线衍射（XRD）、场发射扫描电子显微镜和紫外可见光谱对合成的纳米复合材料进行了表征。XRD结果表明了BiOF、银掺杂BiOF和银掺杂BiOF-rGO复合材料的晶体结构。光催化活性评估集中在紫外光和太阳光照射下亚甲基蓝（MB）和甲基橙（MO）染料的降解。银掺杂BiOF-rGO复合材料表现出显著提高的降解效率，在紫外光照射300分钟后，MB和MO的降解率分别达到61.81%和74.25%。相反，在类似条件下，纯BiOF对MB和MO的降解率分别仅为17.63%和48.29%。此外，在太阳光照射下，银掺杂BiOF-rGO复合材料在300分钟后表现出43.87%的MB去除效率，而纯BiOF在相同条件下仅表现出27.47%的去除效率。这些结果强调了银掺杂BiOF-rGO复合材料作为工业废水中有机染料光降解的高效且适应性强的光催化剂的潜力。
