scholarly journals Preparation of inverse opal zirconia

2018 ◽  
Vol 50 (3) ◽  
pp. 387-394
Author(s):  
Xiao-Peng Li ◽  
Li-Li Wang ◽  
Zai-Lei Gong ◽  
Xiu-Feng Wang ◽  
Ye-Ming Zhou
Keyword(s):  
Colloidal Crystal ◽  
Stop Band ◽  
Visible Region ◽  
Holding Time ◽  
Inverse Opal ◽  
Mass Ratio ◽  
Templating Method ◽  
Assembly Method ◽  
Precursor Ratio ◽  
Colloidal Crystal Templating

Inverse opal zirconia is useful in many ways because of their ability to combine several chemical and physical properties. In this research, polystyrene template was fabricated by self-assembly method and inverse opal zirconia was prepared by colloidal crystal-templating method. The process of preparation of inverse opal zirconia as well as effects on morphology and phase of as-prepared inverse opal zirconia were studied. The results showed precursor ratio of zirconium acetate and methanol, mass ratio of polystyrene templates and precursor and dipping times had remarkable influence on morphology of inverse opal zirconia. When the precursor ratio was 1:1; the mass ratio was 1:15 and dipped once, much better morphology of inverse opal zirconia was obtained. The mass ratio, sintering temperature and holding time had significant effect on crystallization of zirconia. Pure phase zirconia could be obtained when sintered at 600 oC, holding time was 2h and the mass ratio was 1:1. A distinguished single stop band in the visible region of the spectrum and unique structural color were observed in inverse opal zirconia, which will make this material promising candidate for novel pigment.

scholarly journals Effects of Crystallinity on the Photocatalytic Polymerization of 3,4-Ethylenedioxythiophene over CsPbBr3 Inverse Opals

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1331
Author(s):  
Siwei Zhao ◽  
Shaohua Jin ◽  
Huanmin Liu ◽  
Shengfu Li ◽  
Kun Chen
Keyword(s):  
Colloidal Crystal ◽  
Three Dimensional ◽  
Inverse Opal ◽  
Porous Structures ◽  
Novel Approach ◽  
Transmission Electron ◽  
Hierarchical Porous ◽  
Antisolvent Crystallization ◽  
Colloidal Crystal Templating ◽  
High Absorption Coefficient

Due to their high absorption coefficient and long carrier lifetime, halide perovskites are promising candidates for photocatalysts. For this study, the antisolvent crystallization protocol and the colloidal crystal templating approach were combined to fabricate the highly crystalline cesium lead bromide perovskite with inverse opal morphology (IO-CsPbBr3). Scanning electron microscopy and transmission electron microscope images demonstrate the three-dimensional well-ordered porous structures of the IO-CsPbBr3 and their single-crystalline features. The presented approach not only provides hierarchical porous structures but also enhances overall crystallinity. When used as catalysts to promote the polymerization of 2,2′,5′,2″-ter-3,4-ethylenedioxythiophene, the highly crystalline IO-CsPbBr3 exhibits a superior photocatalytic performance compared to its polycrystalline counterpart. Furthermore, the morphology and the crystalline structure of the highly crystalline IO-CsPbBr3 are well preserved under photocatalytic conditions. This novel approach enables the preparation of a halide perovskite inverse opal with high crystallinity.

A novel route for the facile synthesis of hierarchically porous TiO2/graphitic carbon microspheres for lithium ion batteries

2014 ◽  
Vol 2 (8) ◽  
pp. 2801-2806 ◽  
Author(s):  
Chengli Zhang ◽  
Qianyu Zhang ◽  
Shifei Kang ◽  
Xi Li
Keyword(s):  
Electrochemical Performance ◽  
Colloidal Crystal ◽  
Lithium Ion ◽  
Graphitic Carbon ◽  
Carbon Microspheres ◽  
Facile Synthesis ◽  
Templating Method ◽  
Hierarchically Porous ◽  
Excellent Electrochemical Performance ◽  
Colloidal Crystal Templating

Hierarchically porous TiO2/graphitic carbon microspheres synthesized by a colloidal crystal templating method, possess a specific structure and excellent electrochemical performance.

Facile synthesis of three-dimensionally ordered macroporous silicon-doped La0.8K0.2CoO3 perovskite catalysts for soot combustion

2016 ◽  
Vol 6 (21) ◽  
pp. 7718-7728 ◽  
Author(s):  
Nengjie Feng ◽  
Chong Chen ◽  
Jie Meng ◽  
Yang Wu ◽  
Geng Liu ◽  
...  
Keyword(s):  
Colloidal Crystal ◽  
Macroporous Silicon ◽  
Macroporous Structure ◽  
Soot Combustion ◽  
Facile Synthesis ◽  
Templating Method ◽  
Perovskite Catalysts ◽  
Colloidal Crystal Templating ◽  
Ordered Macroporous ◽  
Silicon Doped

Three-dimensionally ordered macroporous (3DOM) silicon-doped La0.8K0.2CoO3 perovskite catalysts were successfully prepared by a colloidal crystal templating method. The catalysts showed a well-ordered macroporous structure and exhibited high activity for soot removal.

MORPHOLOGICALLY CONTROLLED ELECTRODEPOSITION OF ZnO AND Cu2O BY THE COLLOIDAL CRYSTAL TEMPLATE METHOD

2009 ◽  
Vol 18 (04) ◽  
pp. 611-616 ◽  
Author(s):  
MING FU ◽  
AILUN ZHAO ◽  
JI ZHOU ◽  
DAWEI HE ◽  
YONGSHENG WANG
Keyword(s):  
Electrochemical Method ◽  
Colloidal Crystal ◽  
Colloidal Crystals ◽  
Template Method ◽  
Inverse Opal ◽  
Macroporous Materials ◽  
Colloidal Crystal Template ◽  
Colloidal Crystal Templating

This paper presents a versatile method for fabricating 3D macroporous materials using colloidal crystals as the templates. ZnO and Cu2O were deposited by the electrochemical method via the colloidal crystal template. Not only were 3D inverse opal structures and 2D nanobowls fabricated, but nanoparticles with a controlled shape were also prepared. Morphological controls via colloidal crystal templating are discussed.

In Vitro Culture of Osteoblasts with Three Dimensionally Ordered Macroporous Sol-Gel Bioactive Glass (3DOM-BG) Particles

2005 ◽  
Vol 284-286 ◽  
pp. 655-658 ◽  
Author(s):  
Kai Zhang ◽  
Newell R. Washburn ◽  
Joseph M. Antonucci ◽  
Carl G. Simon
Keyword(s):  
Body Fluid ◽  
Colloidal Crystal ◽  
Sol Gel ◽  
Molar Fraction ◽  
Bioactive Glasses ◽  
Templating Method ◽  
Sol Gel Process ◽  
Colloidal Crystal Templating ◽  
Ordered Macroporous

Three dimensionally ordered macroporous sol-gel bioactive glasses (3DOM-BGs)are a type of biomaterial that is both bioactive and resorbable. In this study, 80 % SiO2 – 20 % CaO (molar fraction) 3DOM-BG particles were prepared using a colloidal crystal templating method via a sol-gel process. The as-prepared 3DOM-BG particles can quickly convert to a calcium-deficient, bone-like apatite after soaking in a simulated body fluid (SBF). MC3T3-E1 osteoblastic cells were cultured in the presence of 3DOM-BG particles. Preliminary results from cell studies showed that 3DOM-BG particles are not cytotoxic and are compatible with MC3T3-E1 osteoblast-like cells in vitro.

scholarly journals Poly(styrene/α-tertbutoxy-ω-vinylbenzyl-polyglycidol) micro spheres for the preparation of novel photonic crystals

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Teresa Basinska ◽  
Loïg Kergoat ◽  
Claire Mangeney ◽  
Mohamed M. Chehimi ◽  
Stanislaw Slomkowski
Keyword(s):  
Photonic Crystal ◽  
Colloidal Crystal ◽  
Stop Band ◽  
Particle Surface ◽  
Visible Region ◽  
Diffraction Peak ◽  
Bragg Diffraction ◽  
Surface Chemical ◽  
Surface Chemical Composition ◽  
Bragg Diffraction Peak

AbstractWe report on the preparation of a novel photonic crystal assembled from poly(styrene/α-tertbutoxy-ω-vinylbenzyl-polyglycidol) microspheres. The latex particles were fully characterized in terms of size (271 nm, Dw/Dn=1.004), electrophoretic mobility (-3.79x10-8 m2V-1s-1) and surface chemical composition (evidence for a PGL-rich particle surface). They were then assembled into 3D colloidal crystal showing an optical stop band in the visible region. The λmax for the Bragg diffraction peak is 570 nm. As the particles under study are highly hydrophilic and biocompatible, this work opens up new opportunities for the design of photonic crystal-based biosensing devices.

Self-templating construction of mesopores on three-dimensionally ordered macroporous La0.5Sr0.5MnO3 perovskite with enhanced performance for soot combustion

2019 ◽  
Vol 9 (8) ◽  
pp. 1835-1846 ◽  
Author(s):  
Peng Zhao ◽  
Fan Fang ◽  
Nengjie Feng ◽  
Chong Chen ◽  
Geng Liu ◽  
...  
Keyword(s):  
Colloidal Crystal ◽  
Selective Dissolution ◽  
Soot Combustion ◽  
Templating Method ◽  
Dissolution Method ◽  
Colloidal Crystal Templating ◽  
Ordered Macroporous

A three-dimensionally ordered macroporous (3DOM) La0.5Sr0.5MnO3 perovskite was prepared by a colloidal crystal templating method, with extra mesopores created by selective dissolution method performed successively.

Sign in / Sign up

Export Citation Format

Share Document