Asefi N, Hasheminiasari M, Masoudpanah S M
School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran.
Sci Rep. 2023 Jul 31;13(1):12338. doi: 10.1038/s41598-023-39622-4.
Highly pure BiFeO (BFO) powders were prepared by the solution combustion synthesis method using cetyltrimethylammonium bromide (CTAB) and glycine as fuels at various fuel-to-oxidant (φ) ratios. Microstructural characteristics, morphology, optical properties, and thermal analysis were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and differential thermal/thermogravimetry (DTA/TGA), respectively. The combusted powders prepared at different fuel content contained a small amount of impurity phases such as BiFeO and BiFeO. During the calcination of BFO powders at 600 °C for 1 h, a nearly pure BFO phase was produced. Combusted powders photodegraded about 80% of methylene blue dye at φ = 2 through 90 min of visible light irradiation.
采用十六烷基三甲基溴化铵（CTAB）和甘氨酸作为燃料，通过溶液燃烧合成法，在不同的燃料与氧化剂（φ）比下制备了高纯度的铋铁氧体（BFO）粉末。分别通过X射线衍射（XRD）、扫描电子显微镜（SEM）、漫反射光谱（DRS）和差示热分析/热重分析（DTA/TGA）研究了微观结构特征、形态、光学性质和热分析。在不同燃料含量下制备的燃烧粉末含有少量杂质相，如BiFeO和BiFeO。在600℃下对BFO粉末进行1小时煅烧后，生成了近乎纯的BFO相。在φ = 2时，通过90分钟的可见光照射，燃烧粉末对亚甲基蓝染料的光降解率约为80%。
