scholarly journals Growth of Less than 20 nm SnO Nanowires Using an Anodic Aluminum Oxide Template for Gas Sensing

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 153 ◽  
Author(s):  
Bo-Chi Zheng ◽  
Jen-Bin Shi ◽  
Hsien-Sheng Lin ◽  
Po-Yao Hsu ◽  
Hsuan-Wei Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Energy Dispersive Spectrometer ◽  
Bottom Surface ◽  
Aao Template ◽  
X Ray ◽  
Anodic Aluminum ◽  
Transparent Alumina ◽  
20 Nm

Stannous oxide (SnO) nanowires were synthesized by a template and catalyst-free thermal oxidation process. After annealing a Sn nanowires-embedded anodic aluminum oxide (AAO) template in air, we obtained a large amount of SnO nanowires. SnO nanowires were first prepared by electrochemical deposition and an oxidization method based on an AAO template. The preparation of SnO nanowires used aluminum sheet (purity 99.999%) and then a two-step anodization procedure to obtain a raw alumina mold. Finally, transparent alumina molds (AAO template) were obtained by reaming, soaking with phosphoric acid for 20 min, and a stripping process. We got a pore size of < 20 nm on the transparent alumina mold. In order to meet electroplating needs, we produced a platinum film on the bottom surface of the AAO template by using a sputtering method as the electrode of electroplating deposition. The structure was characterized by X-ray diffraction (XRD). High resolution transmission electron microscopy (HRTEM) and field emission scanning electron microscopy (FESEM) with X-ray energy dispersive spectrometer (EDS) were used to observe the morphology. The EDS spectrum showed that components of the materials were Sn and O. FE-SEM results showed the synthesized SnO nanowires have an approximate length of ~10–20 μm with a highly aspect ratio of > 500. SnO nanowires with a Sn/O atomic ratio of ~1:1 were observed from EDS. The crystal structure of SnO nanowires showed that all the peaks within the spectrum lead to SnO with a tetragonal structure. This study may lead to the use of the 1D structure nanowires into electronic nanodevices and/or sensors, thus leading to nano-based functional structures.

Growth of less than 20 nm SnO Nanowire Using AAO Template for Gas Sensing

2020 ◽  
Vol 990 ◽  
pp. 325-329
Author(s):  
Bo Ci Cheng ◽  
Jen Bin Shi ◽  
Po Feng Wu ◽  
Po Yao Hsu ◽  
Hsien Sheng Lin ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Large Scale ◽  
Gas Sensing ◽  
Energy Dispersive Spectrometer ◽  
Atomic Ratio ◽  
Bottom Surface ◽  
Aao Template ◽  
X Ray ◽  
Transparent Alumina ◽  
20 Nm

Large-scale stannous oxide (SnO) nanowires were synthesized via a template and catalyst-free thermal oxidation process. After annealing Sn nanowires embedded AAO template in atmosphere, we observed a large scale of SnO nanowires. SnO nanowires were first prepared via the electrochemical deposition and an oxidization method based on an AAO template. The preparation of SnO nanowires use aluminum sheet (purity 99.999%) and then two-step anodization procedure to obtain raw alumina mold. Finally, transparent alumina mold (AAO template) were obtained by the reaming, soaking with phosphoric acid for 20 minutes and a stripping process. We get a pore size of < 20 nm transparent alumina mold. In order to electroplating needs, we produce platinum film on the bottom surface of AAO template by using sputtering method as the electrode of electroplating deposition. The structure was characterized by X-ray diffraction (XRD). High resolution transmission electron microscopy (HRTEM) and field emission scanning electron microscopy (FESEM) with x-ray energy dispersive spectrometer (EDS) was used to observe the morphology. The EDS spectrum showed that components of the materials are Sn and O. FE-SEM results show the synthesized SnO nanowires to have an approximate length of ~ 10 - 20 μm with a highly aspect ratio > 500. SnO nanowires with an Sn/O atomic ratio of ~ 1 : 1 were observed from EDS. The crystal structure of SnO nanowires showed that all the peaks within the spectra can be indexed to SnO with a tetragonal structure. This studies may lead to the use of the 1D structure nanowires into electronic nanodevices and/or sensors, thus leading to nanobased functional structures.

Template Synthesis of Indium Nanowires Using Anodic Aluminum Oxide Membranes

2008 ◽  
Vol 8 (9) ◽  
pp. 4488-4493 ◽  
Author(s):  
Feng Chen ◽  
Adrian H. Kitai
Keyword(s):  
Aluminum Oxide ◽  
Template Synthesis ◽  
Anodic Aluminum Oxide ◽  
Preferred Orientation ◽  
Hydraulic Pressure ◽  
X Ray Diffraction ◽  
Aao Template ◽  
X Ray ◽  
Anodic Aluminum ◽  
Oxide Membranes

Indium nanowires with diameters approximately 300 nm have been synthesized by a hydraulic pressure technique using anodic aluminum oxide (AAO) templates. The indium melt is injected into the AAO template and solidified to form nanostructures. The nanowires are dense, continuous and uniformly run through the entire ∼60 μm thickness of the AAO template. X-ray diffraction (XRD) reveals that the nanowires are polycrystalline with a preferred orientation. SEM is performed to characterize the morphology of the nanowires.

TEMPLATE SYNTHESIS OF ALIGNED SiO2 SUBMICRO-WIRES

2006 ◽  
Vol 05 (02n03) ◽  
pp. 273-278
Author(s):  
LIFANG CHENG ◽  
XINGTANG ZHANG ◽  
YUNCAI LI ◽  
YABIN HUANG ◽  
ZULIANG DU
Keyword(s):  
Electron Microscopy ◽  
Silicon Dioxide ◽  
Photoelectron Spectroscopy ◽  
Anodic Aluminum Oxide ◽  
Tetraethyl Orthosilicate ◽  
X Ray Diffraction ◽  
Aao Template ◽  
X Ray ◽  
Anodic Aluminum ◽  
Transmission Electron

Aligned silicon dioxide ( SiO 2) submicro-wires have been synthesized from tetraethyl orthosilicate (TEOS) by anodic aluminum oxide (AAO) template method. The products were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and X-ray diffraction (XRD).

Preparation of good mechanical property polystyrene nanotubes with array structure in anodic aluminum oxide template using simple physical techniques

2004 ◽  
Vol 19 (11) ◽  
pp. 3324-3328 ◽  
Author(s):  
Guojun Song ◽  
Xilin She ◽  
Zhifeng Fu ◽  
Jianjiang Li
Keyword(s):  
Electron Microscopy ◽  
Mechanical Property ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Porous Wall ◽  
Thin Polymer Film ◽  
Good Mechanical Property ◽  
Aao Template ◽  
Anodic Aluminum ◽  
Array Structure

The stable mechanical property polystyrene (PS) nanotubes with array structure were first prepared by filtrating a solution or melt of normal molecular weight PS (Mn ≈ 180,000) into anodic aluminum oxide (AAO) template with only 200-nm pores. The results of transmission electron microscopy and scanning electron microscopy illuminated that PS tubules were successfully obtained and the wall thickness of PS tubules prepared by the 2.5 wt%, 5.0 wt%, and 10.0 wt% PS solution were respectively 50 nm, 70 nm, and 80 nm. The structure of polymer nanotubes depends strongly on the concentration of PS solution. It was found that the wall of the nanotubes derived from melt is thicker than that of the nanotubes from solution. When the polymer solution wets AAO template, a thin polymer film will be formed on the inner porous wall. The thin film/AAO composite membrane acts as a “second-order” template and is soaked repeatedly. So PS solution wets the template and forms nanotubes according to the multi-time wetting mechanism.

Embedding Cs 3 Cu 2 I 5 Scintillators into Anodic Aluminum Oxide Matrix for High‐Resolution X‐Ray Imaging

2021 ◽  
pp. 2101194
Author(s):  
Xue Zhao ◽  
Tong Jin ◽  
Wanru Gao ◽  
Guangda Niu ◽  
Jinsong Zhu ◽  
...  
Keyword(s):  
High Resolution ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
X Ray ◽  
Anodic Aluminum ◽  
X Ray Imaging ◽  
Oxide Matrix

Controlled Growth of Carbon Spheres by Chemical Vapor Deposition Based on Anodic Aluminum Oxide Nano-Template

2012 ◽  
Vol 184-185 ◽  
pp. 924-927
Author(s):  
Lei Shan Chen ◽  
Cun Jing Wang ◽  
Gai Rong Chen
Keyword(s):  
Electron Microscopy ◽  
Vapor Deposition ◽  
Anodic Aluminum Oxide ◽  
Chemical Vapor ◽  
Average Diameter ◽  
Carbon Spheres ◽  
Aao Template ◽  
Graphene Layers ◽  
Anodic Aluminum ◽  
Transmission Electron

The reactions were carried out by decomposing acetylene at 1000 °C in a two-stage furnace system for 10 min. In the first furnace no catalyst was placed and an AAO template with the average diameter about 50 nm was placed in the second furnace whose temperature was designed to be 500 °C, 600 °C and 700 °C. The samples were characterized by scanning electron microscopy and high resolution transmission electron microscopy. The results show that carbon spheres with average diameter about 50 nm on the AAO template surface were obtained when the temperature of the second furnace was designed to be 700 °C. These carbon spheres are composed of unclosed graphene layers with an interlayer distance of 0.33–0.35 nm between the layers.

Controllable Synthesis of Carbon Spheres Based on Anodic Aluminum Oxide Nano-Template

2011 ◽  
Vol 393-395 ◽  
pp. 32-35
Author(s):  
Cun Jing Wang ◽  
Peng Yao ◽  
Gai Rong Chen
Keyword(s):  
Electron Microscopy ◽  
Anodic Aluminum Oxide ◽  
Average Diameter ◽  
Carbon Spheres ◽  
Aao Template ◽  
Controllable Synthesis ◽  
Graphene Layers ◽  
Anodic Aluminum ◽  
Transmission Electron ◽  
Scanning Electron

The reactions were carried out by decomposing acetylene at 1000 °C in a two-stage furnace system for 10 min. In the first furnace no catalyst was placed and an AAO template with average diameter about 50 nm was placed in the second furnace whose temperature was designed to be 700 °C. The samples were characterized by scanning electron microscopy and high resolution transmission electron microscopy. The results show that carbon spheres with average diameter about 50 nm on the AAO template surface were obtained and these carbon spheres are composed of unclosed graphene layers with an interlayer distance of 0.33–0.35 nm between the layers.

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