scholarly journals Improved Photochemistry of TiO2 Inverse Opals and Some Examples

10.5772/38768 ◽  
2012 ◽  
Author(s):  
Fabrizio Sordello ◽  
Valter Maurino ◽  
Claudio Minero
Keyword(s):  
Inverse Opals

scholarly journals From Macro to Mesoporous ZnO Inverse Opals: Synthesis, Characterization and Tracer Diffusion Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 196
Author(s):  
Shravan Kousik ◽  
Diane Sipp ◽  
Karina Abitaev ◽  
Yawen Li ◽  
Thomas Sottmann ◽  
...  
Keyword(s):  
Open Porosity ◽  
Laser Scanning ◽  
High Surface ◽  
Stop Band ◽  
Correlation Spectroscopy ◽  
Laser Scanning Microscopy ◽  
Added Value ◽  
Confocal Laser ◽  
Inverse Opals ◽  
Mesoporous Zno

Oxide inverse opals (IOs) with their high surface area and open porosity are promising candidates for catalyst support applications. Supports with confined mesoporous domains are of added value to heterogeneous catalysis. However, the fabrication of IOs with mesoporous or sub-macroporous voids (<100 nm) continues to be a challenge, and the diffusion of tracers in quasi-mesoporous IOs is yet to be adequately studied. In order to address these two problems, we synthesized ZnO IOs films with tunable pore sizes using chemical bath deposition and template-based approach. By decreasing the size of polystyrene (PS) template particles towards the mesoporous range, ZnO IOs with 50 nm-sized pores and open porosity were synthesized. The effect of the template-removal method on the pore geometry (spherical vs. gyroidal) was studied. The infiltration depth in the template was determined, and the factors influencing infiltration were assessed. The crystallinity and photonic stop-band of the IOs were studied using X-Ray diffraction and UV-Vis, respectively. The infiltration of tracer molecules (Alexa Fluor 488) in multilayered quasi-mesoporous ZnO IOs was confirmed via confocal laser scanning microscopy, while fluorescence correlation spectroscopy analysis revealed two distinct diffusion times in IOs assigned to diffusion through the pores (fast) and adsorption on the pore walls (slow).

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

Au-modified three-dimensional In2O3 inverse opals: synthesis and improved performance for acetone sensing toward diagnosis of diabetes

Nanoscale ◽  
2015 ◽  
Vol 7 (30) ◽  
pp. 13051-13060 ◽  
Author(s):  
Ruiqing Xing ◽  
Qingling Li ◽  
Lei Xia ◽  
Jian Song ◽  
Lin Xu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Exhaled Breath ◽  
Au Nps ◽  
Inverse Opals ◽  
Improved Performance

3DIO macroporous In2O3 films with additional via-hole architectures were fabricated and Au NPs were loaded, which were applied for detecting of acetone gas in exhaled breath.

Controlled Insertion of Planar Defect in Inverse Opals for Anticounterfeiting Applications

2017 ◽  
Vol 9 (49) ◽  
pp. 43098-43104 ◽  
Author(s):  
Yongjoon Heo ◽  
Su Yeon Lee ◽  
Ji-Won Kim ◽  
Tae Yoon Jeon ◽  
Shin-Hyun Kim
Keyword(s):  
Planar Defect ◽  
Inverse Opals

Modified Spontaneous Emission of Organic Molecules In-Filled in Inverse Opals

2011 ◽  
Vol 11 (11) ◽  
pp. 9749-9751 ◽  
Author(s):  
Lier Deng ◽  
Yongsheng Wang ◽  
Dawei He
Keyword(s):  
Spontaneous Emission ◽  
Organic Molecules ◽  
Inverse Opals

Bandgap Engineering for Photocatalytic Polymerization of 3, 4‐Ethylenedioxythiophene (EDOT) over Cs3BixSb(2‐x)Br9 Inverse Opals

ChemCatChem ◽  
2021 ◽  
Author(s):  
Kun Chen ◽  
Siwei Zhao ◽  
Shaohua Jin ◽  
Huanmin Liu ◽  
Youxin Su ◽  
...  
Keyword(s):  
Bandgap Engineering ◽  
Inverse Opals

Preparation of conducting polymer inverse opals and its application as ammonia sensor

2013 ◽  
Vol 433 ◽  
pp. 59-63 ◽  
Author(s):  
Qifeng Zhong ◽  
Hua Xu ◽  
Haibo Ding ◽  
Ling Bai ◽  
Zhongde Mu ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Ammonia Sensor ◽  
Inverse Opals

scholarly journals Al2O3/TiO2 inverse opals from electrosprayed self-assembled templates

2018 ◽  
Vol 9 ◽  
pp. 216-223 ◽  
Author(s):  
Arnau Coll ◽  
Sandra Bermejo ◽  
David Hernández ◽  
Luís Castañer
Keyword(s):  
Three Dimensional ◽  
Optical Quality ◽  
High Optical Quality ◽  
Inverse Opals ◽  
Large Size ◽  
Fabrication Errors ◽  
Supporting Layer ◽  
Higher Temperature ◽  
Self Assembled ◽  
High Dielectric

The fabrication of high optical quality inverse opals is challenging, requiring large size, three-dimensional ordered layers of high dielectric constant ratio. In this article, alumina/TiO2–air inverse opals with a 98.2% reflectivity peak at 798 nm having an area of 2 cm2 and a thickness of 17 µm are achieved using a sacrificial self-assembled structure of large thickness, which was produced with minimum fabrication errors by means of an electrospray technique. Using alumina as the first supporting layer enables the deposition of TiO2 at a higher temperature, therefore providing better optical quality.

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