مقاله PVP-assisted assembly of lanthanum carbonate hydroxide with hierarchical architectures and their luminescence properties : تی پی بین

خلاصه مقاله

In the presence of polyvinylpyrrolidone (PVP), three-dimensional (3D) hierarchical nest-like architecture of lanthanum carbonate hydroxide (LaOHCO₃) with uniform size is successfully synthesized by a facile hydrothermal process using La(NO₃)₃ as the starting material. The result indicates that LaOHCO₃ microspheres are constructed layer-by-layer from a large number of two-dimensional plates, which are composed of numerous nanorods with a length of ∼50 nm. The formation mechanism is discussed on the basis of the result of a time-dependent experiment. It is demonstrated that PVP played an important role in the formation of the hierarchical structure. The room temperature photoluminescence properties of the LaOHCO₃ with different morphologies and size are investigated, showing that the nest-like LaOHCO₃ exhibits a relative stronger luminescence intensity at 420 nm than the synthesized rod- and apple-like LaOHCO₃samples.

نویسندگان

Gang Wang [ National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), National Photoelectric Technology and Functional Materials & Application International Cooperation Base, Institute of Photonics & Photon-Technology, Northwes ]

Hui Wang [ Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry & Materials Science, Northwest University, Xi’an 710069, PR China ]

Jintao Bai [ National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), National Photoelectric Technology and Functional Materials & Application International Cooperation Base, Institute of Photonics & Photon-Technology, Northwes ]

Zhaoyu Ren [ National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), National Photoelectric Technology and Functional Materials & Application International Cooperation Base, Institute of Photonics & Photon-Technology, Northwes ]

Jinbo Bai [ Laboratory MSS/MAT, CNRS UMR 8579, Ecole Centrale Paris, 92295 Chatenay Malabry, France ]

کلمات کلیدی

LaOHCO3 microspheres Polyvinylpyrrolidone Hierarchical structure Luminescence property

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Chemical Engineering Journal

The Chemical Engineering Journal focuses upon three aspects of chemical engineering: chemical reaction engineering, environmental chemical engineering, and materials synthesis and processing.

حوزه های تحت پوشش : Chemical Engineering