4.6 Article

A one-pot strategy for nanocrystalline coating of micro- and nanoparticles

Journal

MATERIALS CHEMISTRY AND PHYSICS
Volume 257, Issue -, Pages -

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2020.123829

Keywords

Nanocoating; Nanoparticles; Solution combustion synthesis; Core-porous shell particles

Funding

  1. Consejo Nacional de Investigaciones Cientificas y Tecnica de Argentina (CONICET)
  2. Comision Nacional de Energia Atomica (CNEA)
  3. Instituto Balseiro (IB)
  4. Universidad Nacional del Cuyo (UnCuyo)

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A one-pot strategy was developed to coat micro- and nanomaterials with crystalline nanoparticles. Three Li-based materials were successfully coated with nanocrystals using solution combustion synthesis. Morphological and structural characterization confirmed the success of the coating process. This method has advantages in simplicity, cost-effectiveness, and scalability.
A one-pot strategy was developed to coat micro- and nanomaterials with crystalline nanoparticles. Three Li-based materials were coated by a solution combustion synthesis method. By this procedure, we obtained LiCoO2 nanoparticles covered with nanocrystals of NiO and Ag; LiMn2O4 nanoparticles covered with Ag, and LiNi0.5Mn1.5O4 microparticles covered with ZnO. The results confirm that the coating of the nano- and microparticles was successful. The materials obtained were characterized morphologically and structurally. Using X-ray diffraction, Transmission Electron Microscopy (TEM), Scanning Electron Microscope (SEM), and Energy-dispersive X-ray Spectroscopy Mapping, the morphological uniformity and high crystallinity of the nano coatings were confirmed. Therefore, this method makes it possible to obtain different coatings by varying the weight percentage of the coating material, yielding homogeneously coated materials, even at percentages as low as 0.5 wt%. The developed method has great advantages as it is simple, inexpensive, and easily scalable.

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