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Abstract: Heterogeneous ion solution is an important method to improve the wanted property of polycrystalline materials. In this paper, for the purpose of infrared radiation property modification, different contents Fe2O3 were doped in MgO–Al2O3–SiO2 system glasses. The effects of Fe2O3 doping on nucleation mechanism, crystallization behaviors and especially infrared radiation properties of this cordierite-crystalline based glass-ceramics were systematically investigated by means of differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results show that, the doping of iron ion can promote the phase separation of this magnesium aluminosilicate glass, and therefore change the crystallization mechanism of this glass from surface crystallization to bulk crystallization. The iron ion incorporates into the crystal structure of cordierite by mean of substituting Mg2+ in M site. The substitution of Fe3+ to Mg2+ can form the vacant site of Mg2+ cations. For the effects of lattice distortion, impurity and vacancy defects which caused by the incorporation of iron ion, the infrared radiation performance of cordierite based glass-ceramics can be improved effectively. [ABSTRACT FROM AUTHOR]

Abstract: InN thin films were fabricated by reactive direct current magnetron sputtering. Different Ar and N2 flow rates were tried in order to tune the properties of the obtained films. Scanning electron microscopy (SEM) shows that growth of InN on Si (100) follows island growth mode. Energy dispersive X-ray spectroscopy (EDX) shows that the film contains In, N and O. When Ar flow rate is 75sccm and N2 changes from 25sccm to 150sccm, the atomic ratio of N increases while that of In and O decreases. X-ray diffraction (XRD) and Raman scattering reveal that the film contains hexagonal InN and cubic In2O3. The XRD peak intensity related to cubic In2O3 decreases with the increase of N2 flow rate. The four probe measurement shows that all the samples have very low sheet resistances. The transmission of InN deposited on K9 glass is very low. [Copyright &y& Elsevier]

A novel hierarchical BiOI/Bi 2 MoO 6 composites are prepared by a facile precipitation–deposition method. The prepared photocatalyst was characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and X-ray photoelectron spectrometer (XPS). The resulting BiOI/Bi 2 MoO 6 composites exhibit excellent photocatalytic activity and stability towards the degradation of methylene blue (MB) and bisphenol A (BPA) in aqueous solution under visible light irradiation. The optimal composite with 25% BiOI content shows the highest photocatalytic activity for MB degradation. The enhanced photocatalytic activity is mainly attributed to the formation of BiOI/Bi 2 MoO 6 heterojunction that can facilitate the separation and transfer of the photo-generated charge carriers. The roles of active species in the photocatalytic process are discussed by using different types of active species scavengers. Meanwhile, combined with the photoluminescence (PL) and electrochemical impedance spectroscopy (EIS), the degradation mechanism of the photocatalysts is proposed. It is hoped that the work could provide valuable information on the design of specific structure materials with more excellent properties and set the foundation for the further industrial application. [ABSTRACT FROM AUTHOR]