Evaluation of CO2 Absorbent/De-Absorbent by AAO/CaO Membrane

2013 ◽  
Vol 690-693 ◽  
pp. 1856-1859
Author(s):  
Chien Chon Chen ◽  
Yen Po Wang
Keyword(s):  
Anodic Aluminum Oxide ◽  
Sol Gel ◽  
Core Shell ◽  
Anodic Aluminum ◽  
Temperature Ranges ◽  
Higher Temperature ◽  
Co2 Absorbent ◽  
Lower Temperature ◽  
The Relationship ◽  
Fuel Material

This paper discussed the fabrication of anodic aluminum oxide (AAO)/CaO core-shell membrane by anodization and sol-gel processes and evaluated the relationship between the Al2O3/CaO and CO2 by thermodynamic calculation. According to thermodynamic property that CaO can reacts with CO2 forming calcium carbonate (CaCO3) in a lower temperature ranges, CaCO3 can also be decomposed to CaO in a higher temperature ranges. Because the reversible reaction property that CaO can be a CO2 absorbent/ de-absorbent. We address that AAO based on core-shell nanotubes structure to achieve such a demand. The captured CO2 can further convert to fuel material of hydrocarbons.

Patterning of Nanoporous Anodic Aluminum Oxide Arrays by Using Sol−Gel Processing, Photolithography, and Plasma Etching

2004 ◽  
Vol 16 (4) ◽  
pp. 682-687 ◽  
Author(s):  
Dmitri A. Brevnov ◽  
Marcos Barela ◽  
Menake E. Piyasena ◽  
Gabriel P. López ◽  
Plamen B. Atanassov
Keyword(s):  
Aluminum Oxide ◽  
Plasma Etching ◽  
Anodic Aluminum Oxide ◽  
Sol Gel ◽  
Anodic Aluminum ◽  
Nanoporous Anodic Aluminum Oxide ◽  
Gel Processing ◽  
Nanoporous Anodic Aluminum

New Double-Infiltration Methodology to Prepare PCL–PS Core–Shell Nanocylinders Inside Anodic Aluminum Oxide Templates

Langmuir ◽  
2016 ◽  
Vol 32 (31) ◽  
pp. 7860-7865 ◽  
Author(s):  
Belén Sanz ◽  
Iwona Blaszczyk-Lezak ◽  
Carmen Mijangos ◽  
Jordana K. Palacios ◽  
Alejandro J. Müller
Keyword(s):  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Core Shell ◽  
Anodic Aluminum ◽  
Anodic Aluminum Oxide Templates

Template Assisted Fabrication of TiO2 and BaTiO3 Nanotubes

2012 ◽  
Vol 271-272 ◽  
pp. 107-111 ◽  
Author(s):  
Chien Chon Chen ◽  
Chin Hua Cheng ◽  
Guo Yi Tang ◽  
Tai Nan Lin ◽  
Chung Kwei Lin
Keyword(s):  
Mechanical Properties ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Electronic Devices ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Anodic Aluminum ◽  
Working Electrode ◽  
Peeling Off

This paper discussed fabrication of TiO2 and BaTiO3 nanotubes by sol-gel method and used anodic aluminum oxide (AAO) as template. The mechanical properties of TiO2 or BaTiO3 NTs are not great, so a longer tube can crack easily, leading to the peeling off of the NTs film from the Ti substrate. Therefore, we propose to use AAO as a template, followed by deposition of TiO2 and BaTiO3 NT inside AAO to make a working electrode for further electronic devices.

Effect of Aging Treatment on Damping Capacity in Mncunife Alloy

2012 ◽  
Vol 246-247 ◽  
pp. 1158-1162
Author(s):  
Xu Fu ◽  
Ning Li ◽  
Yu Hua Wen ◽  
Jing Teng ◽  
Ying Zhang
Keyword(s):  
Electron Microscope ◽  
Aging Treatment ◽  
Damping Capacity ◽  
Torsion Pendulum ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Higher Temperature ◽  
Lower Temperature ◽  
The Relationship

M2052 alloys with various aging treatments are obtained in order to investigate the relationship between aging treatment and damping capacity by the torsion pendulum, X-Ray Diffraction (XRD) and Transmission Electron Microscope (TEM) methods. The results show that M2052 can obtain high damping capacity (δ>0.2) when aged at a range from 400°C to 450°C, and the damping capacity after aged at a lower temperature is higher than that aged at a higher temperature for the maximum values. TEM and XRD results show that fcc-fct transformation occurs after aging treatment. The volumes of fct structures are one of reason to affect the damping capacity in M2052 alloy. The better understanding aging treatment could promote the applications of M2052 alloy.

scholarly journals Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia

2020 ◽  
Vol 100 (4) ◽  
pp. 645-650
Author(s):  
Sarahaizad Mohd Salleh ◽  
Hideaki Nishizawa ◽  
Shahrul Anuar Mohd Sah ◽  
Ahmed Jalal Khan Chowdhury
Keyword(s):  
Green Turtle ◽  
Annual Variation ◽  
Temporal Distribution ◽  
Chelonia Mydas ◽  
Monthly Basis ◽  
Fundamental Information ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Response To Environmental Change ◽  
The Relationship

AbstractFor species with environmental sex determination, understanding the relationship between reproduction and environmental factors is important for predicting their reproductive output. Here, we study intra-annual variation in green turtle nesting during the 2010–2016 seasons at Penang Island (5°16′28″–5°28′15″N 100°10′52″–100°11′55″E), Malaysia. The additive modelling on a monthly-basis number of nests shows that fluctuation in the number of nests relates to temperature in addition to month of year, rather than precipitation. The number of nests tended to be higher in response to higher temperature during March–July, whereas the lower temperature during August–February also tended to result in a relatively higher number of nests. Concentration of nests during March–July resulted from a shorter inter-nesting interval during warm temperatures, whereas relatively low temperatures may homogenize the temporal distribution of the number of nests. This study provides fundamental information for green turtle nesting seasonality in response to environmental change.

Syntheses of Nd2O3 nanowires through sol–gel process assisted with porous anodic aluminum oxide (AAO) template

2009 ◽  
Vol 469 (1-2) ◽  
pp. 332-335 ◽  
Author(s):  
Xiaofei Qu ◽  
Jinhui Dai ◽  
Jintao Tian ◽  
Xiang Huang ◽  
Zhongfang Liu ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Sol Gel ◽  
Aao Template ◽  
Porous Anodic Aluminum Oxide ◽  
Anodic Aluminum ◽  
Sol Gel Process

Tetragonal-orthorhombic phase transformation and sintering behavior of KSbOSiO4 (isomorphous derivative of KTP)

1994 ◽  
Vol 9 (9) ◽  
pp. 2323-2329 ◽  
Author(s):  
Yoshinori Kanno
Keyword(s):  
Mechanochemical Activation ◽  
Sol Gel ◽  
Orthorhombic Phase ◽  
Tetragonal Symmetry ◽  
Sintering Behavior ◽  
Intermediate Step ◽  
Stoichiometric Mixture ◽  
Mixing Method ◽  
Higher Temperature ◽  
Lower Temperature

Fine KSbOSiO4 (KSS) powders have been prepared by a sol-gel method starting from the system of TEOS, KSb(OH)6, H2O, C2H5OH, or mechanochemical mixing method with a stoichiometric mixture of amorphous silica and KSb(OH)6. The KSS crystallized sluggishly into a tetragonal symmetry in low temperature and transformed into an orthorhombic one in higher temperature, indicating the amorphous-like powder patterns in the intermediate step. This amorphization process could be related to some redistribution of the polysilicate network structures. The mechanochemical activation energy stored in the powder surface, as well as the coexisting matrix (KSbO3), retards the transformation. It was concluded that the KSS powders composed of high molecular weight siloxane polymers, which were formed by hydrolysis in the presence of a small amount of NH3 aqueous solution, showed higher sinterability. The sintering, where the calcining process was omitted, enabled the dense tetragonal-type ceramics stabilized at lower temperature, rather than higher temperature, to fabricate.

Polypyrrole/ZnS Core/Shell Coaxial Nanowires Prepared by Anodic Aluminum Oxide Template Methods

2010 ◽  
Vol 115 (5) ◽  
pp. 2360-2365 ◽  
Author(s):  
Dezhong Zhang ◽  
Liang Luo ◽  
Qing Liao ◽  
Hao Wang ◽  
Hongbing Fu ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Anodic Aluminum Oxide Template ◽  
Core Shell ◽  
Anodic Aluminum ◽  
Template Methods

scholarly journals Enhancement of Luminescence Efficiency of Y2O3 Nanophosphor via Core/Shell Structure

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1563
Author(s):  
Jae-Young Hyun ◽  
Ki-Hyun Kim ◽  
Jae-Pil Kim ◽  
Won-Bin Im ◽  
Kadathala Linganna ◽  
...  
Keyword(s):  
Annealing Temperature ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Core Shell ◽  
Molten Salt Method ◽  
Shell Nanoparticles ◽  
Morphological Studies ◽  
Luminescence Efficiency ◽  
Higher Temperature ◽  
Core Shell Nanoparticles

We successfully fabricated Y2O3:RE3+ (RE = Eu, Tb, and Dy) core and core–shell nanophosphors by the molten salt method and sol–gel processes with Y2O3 core size of the order of 100~150 nm. The structural and morphological studies of the RE3+-doped Y2O3 nanophosphors are analyzed by using XRD, SEM and TEM techniques, respectively. The concentration and annealing temperature dependent structural and luminescence characteristics were studied for Y2O3:RE3+ core and core–shell nanophosphors. It is observed that the XRD peaks became narrower as annealing temperature increased in the core–shell nanophosphor. This indicates that annealing at higher temperature improves the crystallinity which in turn enhances the average crystallite size. The emission intensity and quantum yield of the Eu3+-doped Y2O3 core and core–shell nanoparticles increased significantly when annealing temperature is varied from 450 to 550 °C. No considerable variation was noticed in the case of Y2O3:Tb3+ and Y2O3:Dy3+ core and core–shell nanophosphors.

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