scholarly journals Synthesis of Metal Oxide Inverse Opals from Metal Nitrates by PMMA Colloidal Crystal Templating

2020 ◽  
Author(s):  
Xuyang Zhang ◽  
Christian Weinberger ◽  
Sabrina Amrehn ◽  
Xia Wu ◽  
Michael Tiemann ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Colloidal Crystal ◽  
Inverse Opals ◽  
Metal Nitrates ◽  
Colloidal Crystal Templating

Gold–Silica Inverse Opals by Colloidal Crystal Templating

2002 ◽  
Vol 14 (12) ◽  
pp. 908 ◽  
Author(s):  
D. Wang ◽  
V. Salgueiriño-Maceira ◽  
L.M. Liz-Marzán ◽  
F. Caruso
Keyword(s):  
Colloidal Crystal ◽  
Inverse Opals ◽  
Colloidal Crystal Templating

ChemInform Abstract: Design and Functionality of Colloidal-Crystal-Templated Materials-Chemical Applications of Inverse Opals

ChemInform ◽  
2013 ◽  
Vol 44 (24) ◽  
pp. no-no ◽  
Author(s):  
Andreas Stein ◽  
Benjamin E. Wilson ◽  
Stephen G. Rudisill
Keyword(s):  
Colloidal Crystal ◽  
Inverse Opals ◽  
Templated Materials

SEM and TEM of Metallic Inverse Opals

2000 ◽  
Vol 6 (S2) ◽  
pp. 70-71
Author(s):  
C.F. Blanford ◽  
H.W. Yan ◽  
A. Stein ◽  
C.B. Carter
Keyword(s):  
Hydrofluoric Acid ◽  
Colloidal Crystal ◽  
Porous Solids ◽  
Wall Structure ◽  
Silica Spheres ◽  
Inverse Opal ◽  
Inverse Opals ◽  
Synthetic Opals ◽  
Monodisperse Spheres ◽  
Polymer Spheres

Drawing on nature, synthetic opals (e.g., gilsonite) consist of uniformly sized ceramic spheres ordered into large close-packed domains. In order to improve the toughness or appearance of these chemically bonded ceramics, a polymer is often infiltrated into the interconnected space between the packed spheres. In a similar fashion, colloidal crystal arrays of submicrometer silica or polymer spheres have been employed as templates for periodic porous solids. All the methods for preparing periodic macroporous materials share a common synthetic thread: first, the colloidal crystals are formed from monodisperse spheres; next, the void spaces are filled and solidified; finally, the template is removed by heat, by refluxing in a solvent such as THF (in the case of polymer spheres), or by soaking in hydrofluoric acid (in the case of silica spheres). The product, which can be thought of as an “inverse opal,” often exhibits the same iridescence as a natural opal due to the similarity between the periodicity of the wall structure and the wavelength of light.

Preparation of Three Dimensionally Ordered Macroporous Li4Ti5O12 Electrode

2006 ◽  
Vol 320 ◽  
pp. 263-266 ◽  
Author(s):  
Sang Wook Woo ◽  
Kaoru Dokko ◽  
Kiyoshi Kanamura
Keyword(s):  
Discharge Capacity ◽  
Colloidal Crystal ◽  
Titanium Isopropoxide ◽  
Crystallographic Structure ◽  
Uniform Size ◽  
Inverse Opal Structure ◽  
Prepared Material ◽  
Monodisperse Polystyrene ◽  
Colloidal Crystal Templating ◽  
Ordered Macroporous

Three dimensionally ordered macroporous (3DOM) Li4Ti5O12 was successfully prepared by a colloidal crystal templating process. Colloidal crystal consisting of monodisperse polystyrene particles (1 9m diameter) was used as a template for the synthesis of macroporous Li4Ti5O12. A precursor sol consisting of titanium isopropoxide and lithium acetate was injected into the template, and it was calcined at high temperatures. A macroporous membrane of Li4Ti5O12 with inverse-opal structure was obtained. The prepared material had a spinel-related crystallographic structure. The interconnected pores with uniform size (0.8 9m) were clearly observed on entire part of the membrane. The electrochemical properties of the 3DOM Li4Ti5O12were characterized with cyclic voltammetry and glavanostatic charge-discharge in an organic electrolyte containing a lithium salt. 3DOM Li4Ti5O12 exhibited a discharge capacity of 160 mA h g-1 at the electrode potential of 1.55 V vs. Li/Li+ due to the solid state redox of Ti3+/4+ accompanying with Li+ ion insertion and extraction. The discharge capacity was close to the theoretical capacity (167 mA h g-1). This means that the Li+ insertion and extraction took place at all part of the 3DOM Li4Ti5O12 membrane.

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