以φ3 mm Al2O3作为主载体,采用浸渍与焙烧工艺,制备水煤气低温变换催化剂:CuO+ZnO/CeO2/Al2O3.利用X射线衍射(XRD)、扫描电子显微镜(SEM)、Raman散射光谱分别对催化剂的化学组成、表面形貌以及表面元素键合状态进行表征;对催化剂的水...以φ3 mm Al2O3作为主载体,采用浸渍与焙烧工艺,制备水煤气低温变换催化剂:CuO+ZnO/CeO2/Al2O3.利用X射线衍射(XRD)、扫描电子显微镜(SEM)、Raman散射光谱分别对催化剂的化学组成、表面形貌以及表面元素键合状态进行表征;对催化剂的水煤气变换反应(WGSR)活性进行测试.在对催化剂表面形貌进行数据挖掘的基础上,利用复杂网络方法对催化剂的表面形貌进行网络建模,并对其网络拓扑参数和同步性进行了计算.计算结果表明,CuO+ZnO/CeO2/Al2O3表面形貌网络度分布具有幂律分布特征;在催化WGSR以后,催化剂表面形貌网络同步性有所增强.展开更多
Gallium phosphide （GAP） nanoparticulate thin films were easily fabricated by colloidal suspension deposition via GaP nanoparticles dispersed in N,N-dimethylformamide. The microstructure of the film was performed by ...Gallium phosphide （GAP） nanoparticulate thin films were easily fabricated by colloidal suspension deposition via GaP nanoparticles dispersed in N,N-dimethylformamide. The microstructure of the film was performed by x-ray diffraction, high resolution transmission electron microscopy and field emission scanning electron microscopy. The film was further investigated by spectroscopic ellipsometry. After the model GaP＋void[SiO2 was built and an effective medium approximation was adopted, the values of the refractive index n and the extinction coefficient k were calculated for the energy range of 0.75 eV-4.0 eV using the dispersion formula in DeltaPsi2 software. The absorption coefficient of the film was calculated from its k and its energy gaps were further estimated according to the Tauc equation, which were further verified by its fluorescence spectrum measurement. The structure and optical absorption properties of the nanoparticulate films are promising for their potential applications in hybrid solar cells.展开更多
文摘以φ3 mm Al2O3作为主载体,采用浸渍与焙烧工艺,制备水煤气低温变换催化剂:CuO+ZnO/CeO2/Al2O3.利用X射线衍射(XRD)、扫描电子显微镜(SEM)、Raman散射光谱分别对催化剂的化学组成、表面形貌以及表面元素键合状态进行表征;对催化剂的水煤气变换反应(WGSR)活性进行测试.在对催化剂表面形貌进行数据挖掘的基础上,利用复杂网络方法对催化剂的表面形貌进行网络建模,并对其网络拓扑参数和同步性进行了计算.计算结果表明,CuO+ZnO/CeO2/Al2O3表面形貌网络度分布具有幂律分布特征;在催化WGSR以后,催化剂表面形貌网络同步性有所增强.
文摘Gallium phosphide （GAP） nanoparticulate thin films were easily fabricated by colloidal suspension deposition via GaP nanoparticles dispersed in N,N-dimethylformamide. The microstructure of the film was performed by x-ray diffraction, high resolution transmission electron microscopy and field emission scanning electron microscopy. The film was further investigated by spectroscopic ellipsometry. After the model GaP＋void[SiO2 was built and an effective medium approximation was adopted, the values of the refractive index n and the extinction coefficient k were calculated for the energy range of 0.75 eV-4.0 eV using the dispersion formula in DeltaPsi2 software. The absorption coefficient of the film was calculated from its k and its energy gaps were further estimated according to the Tauc equation, which were further verified by its fluorescence spectrum measurement. The structure and optical absorption properties of the nanoparticulate films are promising for their potential applications in hybrid solar cells.
