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1Preparation and characterization of hollow carambola-shaped silver sulfide microspheres using a microwave-assisted template-free method显示文摘A simple and convenient method, free of template, has been proposed to synthesize hollow carambolashaped Ag_2 S microspheres with Ag NO3, thiourea(TU), Na Cl and diethanolamine as reagents using a microwave-assisted method, at low temperatures of below 100 8C. Powder X-ray diffraction(XRD),scanning electron microscopy(FESEM) and high resolution transmission electron microscopy(HRTEM)were employed to characterize the morphology and composition of those microspheres. The results indicated that the hollow carambola-shaped silver sulfide microspheres(with high purity and homogeneous morphology) were prepared by an Ostwald ripening process. A possible formation mechanism of hollow carambola-shaped Ag2 S microspheres was proposed.Wei Su Rong Li Yan-Jun Xing 2016Chinese Chemical Letters2016,27,3:6
2Facile synthesis of coordination polymer nanocubes and their conversion into mesoporous single crystal-like Y_2O_3 nanocubes显示文摘Mesoporous single crystal-like Y_2O_3 nanocubes have been prepared through a coordination-based selfassembly process.Firstly,a uniform nanocube-Iike Y-lysine precursor was simply prepared with hydrothermal treatment.After the simple thermal treatment process,nanocube-shaped yttrium oxides with the morphology inherited from the Y-lysine precursor were successfully prepared.The phase,morphology,size and crystalline structure were well characterized by XRD,SEM and TEM.N_2adsorption-desorption demonstrates the mesoporous characteristics of the Y_2O_3 nanocubes,showing a relatively high surface area of 60 m^2/g.Rui Chen Tie-Hong Chen 2014Chinese Chemical Letters2014,25,6:1
3乳液法结合溶胶-凝胶法制备多孔TiO2微球显示文摘为了进一步提高二氧化钛(TiO2)的反射率,采用乳液法结合溶胶-凝胶法,以聚乙二醇(PEG)为相分离诱导剂,制备了内部具有不连续多孔结构的TiO2微球。考察了PEG的添加量对TiO2微球内部孔径大小的影响。研究结果表明:TiO2微球内部的孔径随PEG的用量增加而增大。基于溶胶-凝胶转变和相分离过程,详细介绍了多孔TiO2微球的形成机理。当PEG的添加量为9.0%时,所制备的多孔TiO2微球在近红外区的积分平均反射率为84.9%,比常见钛白粉提高了5.4%。肖芝 朱帅帅 周晓东 2019涂料工业2019,49,10:1
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