The phase was confirmed by X-ray diffractometry (XRD) and a crystallite size of 51nm was determined from the Williamson-Hall plot. The analysis by UV–Vis diffuse reflectance provided an indirect optical transition of 1.75eV, assigned to the crystal field splitting of3dorbital of Fe3+in six-...
CaFe2O4光催化材料可利用太阳能作为光源,驱动进行氧化还原反应将废水降解。本文采用溶胶-凝胶法,以九水硝酸铁和无水氯化钙作为原料,制备CaFe2O4光催化材料。利用X射线衍射仪(XRD)和紫外-可见吸收光谱(UV-vis)对CaFe2O4的结构和光催化性能进行了表征。实验结果表明,制备的CaFe2O4为面心立方尖晶石结构,没有出现...
本文制备了pn复合半导体光催化剂CaFe2 O4/TiO2,采用X线衍射仪( XRD),扫描电子显微镜( SEM),紫外可见漫反射光谱仪( UVVis DRS)及电化学工作站对光催化剂的结构和性能进行表征.以模拟太阳光催化产氢速率评价p n复合半导体光催化剂CaFe2 O4/TiO2的光催化活性.探讨光催化剂中CaFe2 O4添加量,甲醛浓度,反应体系pH对...
FT-IR, SEM, EDX, VSM, ICP-OES, TGA, TEM and XRD techniques were employed to characterize the newly synthesized nanostructure. In addition, durability of the catalyst was considered for several sequential reaction cycles without the notable loss of catalytic activity. The absence of hazardous ...
TetracyclineIn this paper, a two-step method was used to successfully construct a CaFe2O4/ZnCo2O4 composite photocatalyst. XRD, TEM, XPS, PL, EIS, etc., were used to characterize the morphological structure, element state, photoelectric response and other characteristics of the material. ...
The structural, optical, and morphological characteristics of the photo-active filters were investigated using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM-EDS), X-ray diffraction (XRD), UV-visible diffusion spectra (UV-vis DRS), X-Ray fluorescence (XRF), and...
Novel CaFe 2 O 4 /Bi 2 O 3 composite photocatalysts were prepared via a facile grinding and calcination method and characterized by XRD, TEM, UV鈥搗is and... D Luo,Y Kang - 《Materials Letters》 被引量: 0发表: 2018年 Synthesis and characterization of novel CaFe2O4/Bi2O3 composite ...
采用自蔓延燃烧溶胶.凝胶法制备纳米复合粉体CaFe2O4/α-Fe2O3,利用热分析(TG—DTA)和X射线衍射(XRD)方法对其晶体结构进行分析.研究结果表明:在800℃焙烧温度下可形成纳米复合粉体CaFe2O3/α-Fe2O3,微粒粒径达60～70nm;随着温度的升高,微粒的结晶度增大.苏天江车如心包跃宇大连交通大学学报纳米复合粉体CaFe...
采用第一性原理为基础的微动力学速率方程理论(MK-RET),研究CaFe2O4的还原动力学及还原态CaFe2O4的氧化动力学.(1)首先根据还原态CaFe2O4的XRD,HR-TEM,EDS等表征结果,建立了 CaO(111)/Fe(110)的复合界面,模拟还原态CaFe2O4表面结构,并开展DFT计算.结果表明,H2O和CO2在CaO(111)/Fe(110)表面通过化学吸附...
XRD shows the crystallinity of the prepared composites is anatase and SEM confirms that the TiO2 spheres are intact at 400掳C calcination temperature. However, deformation of spheres is seen at higher temperatures. Photocatalytic activity of the composites is studied using methanol water mixtures and ...