Nanoengineering of Particle Surfaces

Abstract

The creation of core–shell particles is attracting a great deal of interest because of the diverse applicability of these colloidal particles; e.g., as building blocks for photonic crystals, in multi‐enzyme biocatalysis, and in drug delivery. This review presents the state‐of‐the‐art in strategies for engineering particle surfaces, such as the layer‐by‐layer deposition process (see Figure), which allows fine control over shell thickness and composition.

Simple non-basic solution route for the preparation of zinc oxide hollow spheres

“…Because of these excellent properties, hollow structured microspheres are widely used as artificial cells, catalysts, fillers, and for controlled release of drugs, dyes, cosmetics and inks [2][3][4][5][6][7]. A significant number of inorganic hollow structured materials such as CuO/Cu 2 [8][9][10][11][12][13][14][15][16][17][18][19] and ZnO [20][21][22] have been reported. ZnO hollow structured microspheres were usually synthesized through thermal evaporation process [23][24][25][26][27] and hydrothermal method [20,[28][29][30].…”

Synthesis of monodisperse spherical core-shell SiO2-SrAl2Si2O8: Eu2+phosphors by hydrothermal homogeneous precipitation method

“…Among them, core-shell particles have attracted much interest because of their unique properties and outstanding performance. Different from single-component materials, the synthesis of core-shell particles has opened new directions for material research [1][2][3]. Core-shell composites can be monodisperse spherical particles with good optical performance for applications.…”

“…Core-shell composites can be monodisperse spherical particles with good optical performance for applications. There are numerous methods of preparing core-shell-structured materials including layer-by-layer self-assembly [1,4], coprecipitation [5], sol-gel process [6,7], surface reaction [8] and metalorganic vapor phase epitaxy (MOCVD) [9]. These wet chemical techniques can offer the possibilities of controlling homogeneity, phase purity, size distribution, surface area and microstructure uniformity of the powder.…”

Biocompatible polypeptide microcapsules via templating mesoporous silica spheres

“…The geometry of the substrates is not necessarily planar but can be curved or spherical. The extension of the LbL method to colloidal particles and the subsequent removal of the template core has led to a viable alternative for preparing hollow capsules with controlled composition, wall thickness and size [3][4][5], which are of great usefulness in the encapsulation of functional materials [5,6]. More recently, the method has also been extended to the coating of multilayer films onto porous particles [7][8][9][10].…”