Pretexturing and Anodization of W for Fabricating Ordered Anodic Porous WO<sub>3</sub>
نویسندگان
چکیده
Ordered anodic porous WO 3 was prepared by the anodization of a W substrate with depression pattern under constant voltage 18 V in concentrated phosphoric acid at 120 °C. However, behavior hole formation induced depressions found to be strongly affected depth and diameter depressions. Multiple holes were formed shallow during initial stage anodization, whereas only one deep depression. In addition, when small, growth fine around observed. Since on surface prevented from growing direction, large-diameter allowed grow deeper. The obtained ordered can used for various applications such as photocatalysis electrochromic devices.
منابع مشابه
Self-ordered anodic aluminum oxide formed by H2SO4 hard anodization.
The self-ordering of nanoporous anodic aluminum oxide (AAO) in the course of the hard anodization (HA) of aluminum in sulfuric acid (H2SO4) solutions at anodization voltages ranging from 27 to 80 V was investigated. Direct H2SO4-HA yielded AAOs with hexagonal pore arrays having interpore distances D(int) ranging from 72 to 145 nm. However, the AAOs were mechanically unstable and cracks formed a...
متن کاملAnodic fast-growth of highly ordered hexagonal arrays of TiO2 nanotubes by a single anodization step
Highly-ordered TiO2 nanotubes (NTs) have gained much importance for application in hydrogen production by water splitting (photoelectrochemical cells) and the dye-sensitized solar cells (DSCs) [1,2]. The TiO2 NTs can be synthesized using a titanium foil in fluoride containing electrolytes via electrochemical anodization method. The NTs geometry depends on different anodizing parameters (electro...
متن کاملOrdered three-dimensional interconnected nanoarchitectures in anodic porous alumina
Three-dimensional (3D) nanostructures combine properties of nanoscale materials with the advantages of being macro-sized pieces when the time comes to manipulate, measure their properties or make a device. However, the amount of compounds with the ability to self-organize in ordered 3D nanostructures is limited. Therefore, template-based fabrication strategies become the key approach towards 3D...
متن کاملA Highly Controllable Electrochemical Anodization Process to Fabricate Porous Anodic Aluminum Oxide Membranes.
Due to the broad applications of porous alumina nanostructures, research on fabrication of anodized aluminum oxide (AAO) with nanoporous structure has triggered enormous attention. While fabrication of highly ordered nanoporous AAO with tunable geometric features has been widely reported, it is known that its growth rate can be easily affected by the fluctuation of process conditions such as ac...
متن کاملHighly ordered anodic porous alumina membrane and its surface modification approaches for biomedical application
During recent years, the anodization of aluminum, due to its great commercial significance, represents one of the most important and widespread method used for the synthesis of ordered nanostructures. Whose geometry is controlled by diverse synthesis factors which include the voltage applied, the temperature of the electrochemical environment in which the synthesis is carried out, the reagent u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2022
ISSN: ['0013-4651', '1945-7111']
DOI: https://doi.org/10.1149/1945-7111/ac7ef3