نتایج جستجو برای: tio2 nanotubes

تعداد نتایج: 50702  

2013
Dongsheng Guan Ying Wang

Bamboo-type TiO2 nanotube arrays prepared via anodic oxidation are modified with Ag nanoparticles by pulsed electrochemical deposition, for improved lithium-ion intercalation property as the anode material in lithium-ion batteries. Heat treatment converts as-formed nanotubes into anatase for Ag deposition. Bare and Ag-modified nanotubes are cycled at a current density of 800 μAcm between 1.0 an...

2017
Abdallah F. Zedan Nageh K. Allam Siham Y. AlQaradawi Xiaoguang Duan

Supported copper oxide nanoparticles have attracted considerable attention as active and non-precious catalysts for many catalytic oxidation reactions. Herein, mesoporous xCuO-TiO2 nanotube catalysts were fabricated, and their activity and kinetics toward CO oxidation were studied. The morphology and structure of the prepared catalysts were systematically studied using SEM, TEM, EDS, EDX, XRD, ...

One of the most important applications of carbon nanotubes (CNTs) is as reinforcement of metal matrix composites, because of their excellent mechanical properties. In this study, Al-TiO2-multi walled carbon nanotubes (MWCNTs) nanocomposite is fabricated using isostatic pressing followed by hot extrusion. Mechanical alloying is used to mix powders of aluminium, TiO2 and MWCNTs. TiO2 with the amo...

2007
Yaodong Yang Liangti Qu Liming Dai Tae-Sik Kang Michael Durstock

Owing to its excellent semiconducting and photoelectronic properties, TiO2 has recently attracted a great deal of interest for a large variety of applications. Examples include the use of TiO2 nanoparticles/films as photocatalysts for environment protection, photoelectron mediators for sensors, photosensitizers in light-emitting devices, and solar cells. With the recent development in nanoscien...

2014
Azhang Hamlekhan Arman Butt Sweetu Patel Dmitry Royhman Christos Takoudis Cortino Sukotjo Judy Yuan Gregory Jursich Mathew T. Mathew William Hendrickson Amarjit Virdi Tolou Shokuhfar

The primary objective of this study was to fabricate a TiO2 nanotubular surface, which could maintain hydrophilicity over time (resist aging). In order to achieve non-aging hydrophilic surfaces, anodization and annealing conditions were optimized. This is the first study to show that anodization and annealing condition affect the stability of surface hydrophilicity. Our results indicate that ma...

2016
Patricia María Perillo Daniel Fabián Rodríguez

This paper presents the fabrication and characterization of a flexible gas sensor based on TiO2 nanotubes membrane, onto which array interdigitated gold electrodes in one side and a common heater in the backside were obtained using conventional microfabrication techniques. This was used to detect hydrogen sulphide within a concentration range of 6–38 ppm. The response to low concentrations of H...

In the current research project, sol-gel electrophoresis technique was utilized to grow titanium dioxide (TiO2) nanotubes. A titanium sol was prepared using organometallic precursors of titanium to fill the template channels. The prepared solwas driven into nanopores of porous anodic aluminum oxide templates under the influence of a DC electric field to form nanotubes on the pore walls. Tube fo...

2015
C. Wehrenfennig C. M. Palumbiny H. J. Snaith M. B. Johnston L. Schmidt-Mende L. M. Herz

One-dimensional semiconductors such as nanowires and nanotubes are attractive materials for incorporation in photovoltaic devices as they potentially offer short percolation pathways to charge-collecting contacts. We report the observation of freeelectron lifetimes in TiO2 nanotubes of the order of tens of picoseconds. These lifetimes are surprisingly short compared to those determined in films...

A homogenous TiO2 / multi-walled carbon nanotubes(MWCNTs) composite film were prepared by electrophoretic co-deposition from organic suspension on a stainless steel substrate.  In this study, MWCNTs was incorporated to the coating because of their long structure and their capability to be functionalized by different inorganic groups on the surface. FTIR spectroscopy showed the existence of...

Journal: :journal of nanostructures 2015
f. mohammadpour m. moradi

in order to fabricate transparent tio2 nanotube dye-sensitized solar cells, anodically growth nanotube membranes are detached from ti substrate by a re-anodization method. the membranes are transferred on fto glass by two different methods. at the first one, 100mm ti-isopropoxide is used to make tio2 nanoparticles for adhering tio2 nanotube membranes to fto and in the second one a commercial ti...

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