In this work, synthesis of agglomerated TiO2, which is ready to be used after synthesis via a simple hydrolysis process, is described. The as-synthesized TiO2 powders were characterized by X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Field Emission Scanning Electron Microscope (FE...
采用荷兰X’pert-Powder型X射线衍射仪对试样的物相组成进行分析(CuKɑ1辐射，管压：40kV，管流：40mA，步长0.02°，扫描范围10°～90°)，并利用X射线衍射仪配套软件X’pertHighscorePlus对试样中主晶相镁铝尖晶石的晶格常数进行计算；采用德国Zeiss-åIGMAHD型场发射扫描电子显微镜分析试样断口的微观形貌。2、材...
随着HPW含量的增加,催化剂的平均晶粒尺寸范围从18.4 nm降低到7.4 nm,这也进一步验证了杂多酸的掺入限制了锐钛矿TiO2纳米颗粒的持续生长。 Fig. 3 Powder XRD patterns of a M/m TiO2, b M/m-HPW/TiO2-10, c M/m-HPW/TiO2-20 and d M/m-HPW/TiO2-30. 所制备的大孔/介孔HPW/TiO2具有优异的氧化脱...
FT-IR),热分析(thermogravimetry-differential thermal analysis,TG-DTA),X射线粉末衍射(X-ray powder diffraction,XRD)和N2吸附等温线技术对介孔TiO2的结构,形貌,晶相和比表面积进行了表征.结果表明:未经任何热处理的TiO2粉体 即为无定形态,结构完整性较差,样品颗粒呈类球形...
Powder XRD experiments were carried out on a Rigaku XRD-6000 diffractometer with Cu Kα radiation (Condition: λ = 0.15418 nm, 40 kV, and 30 mA; Scan rate: 5° min−1) and a 2θ angle ranging from 3° to 90°. The crystal structures of components could be identified ...
change by XRD, there are clearly indications that oxygen-vacancy formation is facilitated by nitrogen-doping at low nitrogen content. In order to detect changes in the sub-surface or bulk over this powder, we then studied the change in lattice parameters with respect to temperature by VT-SXPD....
change by XRD, there are clearly indications that oxygen-vacancy formation is facilitated by nitrogen-doping at low nitrogen content. In order to detect changes in the sub-surface or bulk over this powder, we then studied the change in lattice parameters with respect to temperature by VT-SXPD....
Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), an...
The XRD technique was performed to examine phase formation behavior of the mixed powder. The SnO, anatase TiO2 and unknown phases, and small amount of SnO2 were present in all the heated powders. Finally, the XAS results showed that the formation of SnTiO3 phase from the reaction between ...
h 后所得粒子。采用 XRD 对上述粒子作物相分析, 图样见图6。 图6 表明,未煅烧的水合Tio 2 粒子呈无定型结 图5 煅烧温度对催化性能的影响 Fig. 5 Effect f ca cinati n temperature n the ph t cata ytic activity (b)未煅烧粒子 (c)300 C (d)500 C (e)900 C ...