نتایج جستجو برای: pulsed electrodeposition

تعداد نتایج: 39579  

Fatemeh Marashi-Najafi Jafar khalil-Allafi, Leila Fathyunes,

In this study, calcium-phosphate (Ca-P) and graphene oxide (GO)/ calcium-phosphate (Ca-P) coatings were electrodeposited with different pulsed current densities on TiO2 nanotubes. Results showed that the co-electrodeposition rate in the presence of GO, especially at low current densities of 2 and 5 mA/cm2, significantly decreased. This might be due to the large size of GO sheets as compared to ...

Journal: :Chemical communications 2011
Jung-Ho Yun Yun Hau Ng Shujuan Huang Gavin Conibeer Rose Amal

The CuInS(2) (CIS) nanoparticles were wrapped uniformly throughout the inner and outer walls of TNTs (TNT) by using square wave pulsed-electrodeposition. This structure enables the CuInS(2)-TiO(2) (CIS-TNT) to exhibit p-n junction diode behavior and enhanced photoelectrochemical properties.

Journal: :Dalton transactions 2015
Yiming Tang Jung-Ho Yun Lianzhou Wang Rose Amal Yun Hau Ng

Well-aligned ZnO nanorods were uniformly coated with a layer of CuInS2 nanoparticle photosensitizers using a tailored sequential pulsed electrodeposition. The formation of CuInS2-ZnO heterojunction with well-matched band energy alignment and the superior electron mobility in ZnO nanorods led to a remarkable 3.75 times improved photoelectrochemical performance of the electrode under visible ligh...

2009
S. Lucatero W. H. Fowle E. J. Podlaha

Multilayer nanowires tailored with alternating AuFe porous layers and Au nonporous segments were fabricated by galvanic square-wave pulsed electrodeposition from a AuFe cyanide-free electrolyte. Control of porosity and composition was achieved via modulation in pulsed time and applied current density. Nanowires with decreased porosity were observed upon increasing time of the AuFe alloy layer o...

A. Ramazani E. J. Khamse M. Almasi Kashi, N. Akhshi Z. Fallah

CoNi nanowires were deposited by pulsed electrodeposition technique into porous alumina templates. The effect of off time between pulses (toff) and reductive/oxidative time (treduc/oxid) on the microstructure and magnetic properties of the CoNi nanowires were investigated. Maximum coercivity and squareness were obtained for samples fabricated at treduc/oxid= 0.5 ms and toff =400 ms. The coerciv...

Journal: :Journal of Materials Chemistry C 2021

The thermal conductivity of CuNi alloys grown by pulsed electrodeposition is reduced the nanostructuration to a value 9.0 ± 0.9 W m?1 K?1 due incorporation saccharine in electrolyte which allowed reduction crystallite size.

2016
Cristina V. Manzano Begoña Abad Miguel Muñoz Rojo Yee Rui Koh Stephen L. Hodson Antonio M. Lopez Martinez Xianfan Xu Ali Shakouri Timothy D. Sands Theodorian Borca-Tasciuc Marisol Martin-Gonzalez

Highly oriented [1 1 0] Bi2Te3 films were obtained by pulsed electrodeposition. The structure, composition, and morphology of these films were characterized. The thermoelectric figure of merit (zT), both parallel and perpendicular to the substrate surface, were determined by measuring the Seebeck coefficient, electrical conductivity, and thermal conductivity in each direction. At 300 K, the in-...

Journal: :Chemical communications 2013
Ana Sol Peinetti Santiago Herrera Graciela A González Fernando Battaglini

The synthesis of atomic metal (gold and nickel) clusters by pulsed galvanostatic electrodeposition on nanoporous alumina is presented. The method allows the production of clusters with an average diameter of 0.7 nm for gold and 1.1 nm for nickel, while the size can be controlled through the current density applied. This strategy represents a simple and efficient method for the construction of h...

Journal: :Advanced materials 2013
Jim Benson Igor Kovalenko Sofiane Boukhalfa David Lashmore Mohan Sanghadasa Gleb Yushin

Pulsed electrodeposition of polyaniline (PANI) allows the fabrication of flexible, electrically conductive, nonwoven PANI-carbon nanotube (PANI-CNT) composite fabrics. They possess specific tensile strength and a modulus of toughness higher than that of aluminum matrix composites, titanium and aluminum alloys, steels, and many other structural materials. Electrochemical tests show that these na...

Journal: :Journal of the Surface Finishing Society of Japan 1996

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