Application of porous alumina formed in selenic acid solution for nanostructures investigation via Raman spectroscopy

2016 ◽  
Author(s):  
Y. V. Nazarkina ◽  
S. A. Gavrilov ◽  
A. A. Polohin ◽  
D. Gromov ◽  
Y. P. Shaman
Keyword(s):  
Raman Spectroscopy ◽  
Acid Solution ◽  
Porous Alumina ◽  
Selenic Acid

scholarly journals Growth behavior of anodic porous alumina formed in malic acid solution

2013 ◽  
Vol 284 ◽  
pp. 907-913 ◽  
Author(s):  
Tatsuya Kikuchi ◽  
Tsuyoshi Yamamoto ◽  
Ryosuke O. Suzuki
Keyword(s):  
Acid Solution ◽  
Malic Acid ◽  
Porous Alumina ◽  
Growth Behavior ◽  
Anodic Porous Alumina

scholarly journals Nanostructural characterization of large-scale porous alumina fabricated via anodizing in arsenic acid solution

2017 ◽  
Vol 403 ◽  
pp. 652-661 ◽  
Author(s):  
Shunta Akiya ◽  
Tatsuya Kikuchi ◽  
Shungo Natsui ◽  
Ryosuke O. Suzuki
Keyword(s):  
Acid Solution ◽  
Large Scale ◽  
Porous Alumina ◽  
Arsenic Acid

Preparation of Porous Alumina by Anodization

2005 ◽  
Vol 23 ◽  
pp. 75-78 ◽  
Author(s):  
C.X. Xu ◽  
X.S. Zhang ◽  
X.W. Sun
Keyword(s):  
Sulfuric Acid ◽  
Oxalic Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Porous Alumina ◽  
Fabrication Process ◽  
Alumina Films ◽  
Anodization Process

The characteristics of porous alumina produced by anodization in both oxalic acid and sulfuric acid solution have been studied. The diameter of the pores for oxalic acid as electrolyte is about 60 nm and for sulfuric acid as electrolyte is about 30 nm. The morphologies of the pores have been improved by two-step anodization process. It has been observed that the temperature and operation voltage are two of the most important factors in the fabrication process of porous alumina films.

scholarly journals Small-Diameter Magnetic and Metallic Nanowire Arrays Grown in Anodic Porous Alumina Templates Anodized in Selenic Acid

2021 ◽  
Author(s):  
Mahdieh Ahmadzadeh ◽  
Mohammad Almasi Kashi ◽  
Mohammad Noormohammadi ◽  
Abdolali Ramazani
Keyword(s):  
Oxalic Acid ◽  
Porous Alumina ◽  
Small Diameter ◽  
Nanowire Arrays ◽  
Pore Filling ◽  
Selenic Acid ◽  
Anodic Porous Alumina ◽  
Formation Pattern ◽  
20 Nm ◽  
Optimized Conditions

Abstract Despite the introduction of selenic acid for anodic porous alumina (APA) preparation with small nanopore diameters (< 20 nm), no attempt has been made to use it in the fabrication of small-diameter magnetic and metallic nanowire arrays. In this paper, considering the high cost of selenic acid, it has been attempted to initially use oxalic acid in preparation of an ordered pattern in the first anodization step, and then employ selenic acid for the second anodization step by matching the appropriate voltage. By investigating the nanopore formation pattern in both acids, it was shown that the nanopores formed in the selenic acid had considerably smaller diameter (13 nm) than that of oxalic acid (35 nm). Under optimized conditions of electrodeposition, various metals were then grown in the selenic APA templates in order to fabricate nanowires with small diameters. The pore filling percentage and crystalline properties were also investigated.

scholarly journals The growth mechanism of ordered nanoporous alumina

2020 ◽  
Vol 315 ◽  
pp. 06002
Author(s):  
Marat Makhmud-Akhunov ◽  
Artem Adamovich ◽  
Igor Yavtushenko
Keyword(s):  
Atomic Force Microscopy ◽  
Acid Solution ◽  
Orthophosphoric Acid ◽  
Porous Alumina ◽  
Force Microscopy ◽  
Atomic Force ◽  
Constant Potential ◽  
Microscopy Data ◽  
Electrochemical Anodic Oxidation ◽  
Orthophosphoric Acid Solution

The paper scrutinizes the peculiarities of porous alumina growth during electrochemical anodic oxidation in the orthophosphoric acid solution at constant potential of 100 Volt. On the basis of atomic-force microscopy data the paper presents consecutive stages of ordering pores in the oxide with the formation of hexagonal dense package after two-stage anodic treatment.

Reduction of selenic acid by potassium bromide in acid solution

1895 ◽  
Vol s3-50 (299) ◽  
pp. 402-404
Author(s):  
F. A. Gooch ◽  
W. S. Scoville
Keyword(s):  
Acid Solution ◽  
Potassium Bromide ◽  
Selenic Acid

scholarly journals Study on Self-Ordering Mechanism of Anodic Porous Alumina Formed in Malonic Acid Solution

2004 ◽  
Vol 55 (12) ◽  
pp. 937-942 ◽  
Author(s):  
Makiko SAITO ◽  
Hiromitsu MUTO ◽  
Hidetaka ASOH ◽  
Sachiko ONO
Keyword(s):  
Acid Solution ◽  
Malonic Acid ◽  
Porous Alumina ◽  
Anodic Porous Alumina

scholarly journals Self-Ordering Behavior of Anodic Porous Alumina via Selenic Acid Anodizing

2014 ◽  
Vol 137 ◽  
pp. 728-735 ◽  
Author(s):  
Tatsuya Kikuchi ◽  
Osamu Nishinaga ◽  
Shungo Natsui ◽  
Ryosuke O. Suzuki
Keyword(s):  
Porous Alumina ◽  
Selenic Acid ◽  
Anodic Porous Alumina

Preparation of Alumina Nanowires by Etched Method in Acid Solution

2014 ◽  
Vol 609-610 ◽  
pp. 370-374
Author(s):  
Rui Yang ◽  
Gui Quan Jiang ◽  
Jun Ma ◽  
Shi Yan Han ◽  
Jiu Yin Pang
Keyword(s):  
Titanium Dioxide ◽  
Activated Carbon ◽  
Acid Solution ◽  
Electrochemical Method ◽  
Catalytic Effect ◽  
Porous Alumina ◽  
Alumina Films ◽  
Better Than

Porous alumina films are obtained on aluminum piece by electrochemical method. In this work, we ues a kind of method for alumina nanowires by the alumina films. The result is showed with SEM. We study the effects of etching action in the dilute HF solution, and deduce the reason. We study catalyzed formaldehyde by the alumina nanowire supported titanium dioxide, results show that, the catalytic effect is better than activated carbon supported.

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