ni au

Structure optical and magnetic properties of Ni Au and Au

Ni Au nanoparticles were prepared via an injection-quenching process in which Au precursors decomposed and formed closed shells on pre-formed Ni seeds synthesized in oleylamine whereas Au Ni nanoparticles were obtained in a one-step reaction involving a seed-catalyzed mechanism

Silica-Supported Au–Ni Catalysts for the Dehydrogenation

 · Other Au–Ni/SiO 2 catalysts followed similar trends in activity and selectivity i.e. initial rapid deactivation and increasing propylene selectivity with time on stream. However the propylene selectivity was generally higher on those samples with higher Au loadings. For example the initial selectivity to propylene was 0.3 on the 0.2 wt Au–Ni/SiO 2 and 19 on the 4 wt Au–Ni/SiO 2.

Synthesis of an ordered nanoporous Cu/Ni/Au film for

 · Ordered nanoporous Cu/Ni/Au film was prepared by electrochemical deposition and magnetron sputtering using an anodic aluminium oxide template. The fabricated porous film has a uniform hexagonal pore size structure a long-range ordered arrangement and a pore diameter of approximately 40 nm. Following the dissoluti

Tuning the electronic structure of AuNi homogeneous solid

 · Fitting using both Ni-Ni and Ni-Au paths gave a better result than only using Ni-Ni path. The coordination number was 2.3 and 4.0 for Ni-Ni and Ni-Au respectively . It should be noted that the bonding distance of Ni-Au from fitting is quite same as what previously reported in an AuNi alloy system .

Boron nitride nanosheets decorated with Au Au-Ni Au-Cu

 · The HER overpotential at Au-Ni-BNNS/Au is the smallest and is only 16 mV (at 5 mA cm −2)–30 mV (at 15 mA cm −2) larger than those at Pt electrode. Since the amounts and bonding states of foreign atoms i.e. Ni Cu and Co in NPs are not controlled and are not known it is

Ternary heterogeneous Pt–Ni–Au nanowires with enhanced

 · Heterogeneous ternary Pt–Ni–Au nanowires (NWs) with randomly distributed Pt–Ni and Pt–Au micro phases were successfully synthesized following an oriented attachment mechanism. The as-prepared NWs exhibit enhanced activity and durability in both a rotating disk electrode (RDE) and single-cell originating fro Chemical Communications HOT Articles

Temperature-Dependent Characteristics of Ni/Au and Pt/Au

 · Schottky diodes were formed on bulk or epitaxial β-Ga 2 O 3 using Ni/Au or Pt/Au and the electrical characteristics measured as a function of temperature in the range 25–200°C. The barrier heights were 1.07 eV (Ni/Au) and 1.04 eV (Pt/Au) at 25°C. The barrier heights increased with temperature while the on-state resistances (R ON) decreased over the same range.

"Synthesis and Electrochemical Characterization of PANI/Ni

 · However PANI/Ni composites showed higher current density for methanol oxidation at Ni in comparison to PANI/Au/Ni composites. The purpose of this research is to show that the electrochemically controlled formation of monometallic and bimetallic catalysts in polyaniline (PANI) can directly influence the efficiency and reproducibility of the

Density functional study of the Au-intercalated graphene

 · We have studied the effect of Au intercalation on the atomic and electronic structure of the graphene/Ni(111) surface by using density functional theory calculations. Our calculations demonstrate that (1) Au atoms energetically favor interface intercalation over surface adsorption (2) Au intercalation drastically changes the electronic structure of graphene/Ni(111) so that the graphene

Carbon-supported Ni(OH) 2 nanospheres decorated with Au

 · An electrocatalyst for BH4− electrooxidation is facilely achieved via a two-step method which consists of carbon substrate Ni(OH)2 nanospheres and Au nanoparticles. Results of scanning electron microcopy transmission electron microscopy and X-ray diffraction show that Au nanoparticles dispersedly grow on both surfaces of carbon substrate and carbon-supported Ni(OH)2 nanospheres.

Au/Ni 12 P 5 core/shell nanocrystals from bimetallic

 · Au/Ni12P5 core/shell nanocrystals with single crystalline shells are synthesized via an in situ phosphorization of dumbbell-like Au–Ni nanoparticles (NPs) as precursors. The obtained core/shell

Interdiffusion in Au(120 nm)/Ni(70 nm) thin films at the

 · The Ni/Au bilayer was grown on p-GaN keeping <111> directions parallel to the GaN <0002>. Oxidizing processes were investigated during heating in air at 530 °C for 1 min. Islands of Au were detected with a thickness about 8 nm and a well-defined interface under a NiO layer. The space between the Au islands was filled with NiO.

Magnetic–plasmonic Ni Au core–shell nanoparticle arrays

 · Ni–Au bimetallic NPAs were fabricated by laser annealing of bimetallic thin films. 23 Fe 3 O 4 Au-NP magnetic field induced assembly was used for the fabrication of Fe 3 O 4 Au Ag nanoflower chains. 24 Ultrathin alumina mask technique was used during the deposition of Ni and Au for the synthesis of Ni/Au hybrid NPAs as a SERS substrate. 25 Despite these efforts an appropriate method

Interdiffusion in Au(120 nm)/Ni(70 nm) thin films at the

 · The Ni/Au bilayer was grown on p-GaN keeping <111> directions parallel to the GaN <0002>. Oxidizing processes were investigated during heating in air at 530 °C for 1 min. Islands of Au were detected with a thickness about 8 nm and a well-defined interface under a NiO layer. The space between the Au islands was filled with NiO.

Reversible loss of core–shell structure for Ni–Au

 · A Ni–Au catalytic system which exhibits a highly selective CO production in CO2 hydrogenation features an intact ultrathin Au shell over the Ni core before and after the reaction.

Phys. Rev. B 57 6427 (1998)Cu-Au Ag-Au Cu-Ag and Ni

 · (i) Our theoretical calculations correctly reproduce the tendencies of Ag-Au and Cu-Au to form compounds and Ni-Au and Cu-Ag to phase separate at T = 0 K. (ii) Of all possible structures Cu 3 Au (L 1 2) and CuAu (L 1 0) are found to be the most stable low-temperature phases of Cu 1 − x Au x with transition temperatures of 530 K and 660 K

Temperature-Dependent Characteristics of Ni/Au and Pt/Au

 · Schottky diodes were formed on bulk or epitaxial β-Ga 2 O 3 using Ni/Au or Pt/Au and the electrical characteristics measured as a function of temperature in the range 25–200°C. The barrier heights were 1.07 eV (Ni/Au) and 1.04 eV (Pt/Au) at 25°C.

Sandwich-type electrochemical immunosensor for CEA

 · An electrochemical aptasensor of CEA based on hollow Ni/ email protected 2 nanomatrix and email protected Au probe was proposed. Ni/ email protected 2 has a large specific surface area and Ni NPs can accelerate the electron transfer at the electrode interface. email protected Au was applied as the signal tag which possess the excellent conductivity to amplify the signals.

Boron nitride nanosheets decorated with Au Au-Ni Au-Cu

 · The HER overpotential at Au-Ni-BNNS/Au is the smallest and is only 16 mV (at 5 mA cm −2)–30 mV (at 15 mA cm −2) larger than those at Pt electrode. Since the amounts and bonding states of foreign atoms i.e. Ni Cu and Co in NPs are not controlled and are not known it is

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Interdiffusion in Au(120 nm)/Ni(70 nm) thin films at the

 · The Ni/Au bilayer was grown on p-GaN keeping <111> directions parallel to the GaN <0002>. Oxidizing processes were investigated during heating in air at 530 °C for 1 min. Islands of Au were detected with a thickness about 8 nm and a well-defined interface under a NiO layer. The space between the Au islands was filled with NiO.

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Au/Ni 12 P 5 core/shell nanocrystals from bimetallic

 · Au/Ni12P5 core/shell nanocrystals with single crystalline shells are synthesized via an in situ phosphorization of dumbbell-like Au–Ni nanoparticles (NPs) as precursors. The obtained core/shell

Silica-Supported Au–Ni Catalysts for the Dehydrogenation

 · Other Au–Ni/SiO 2 catalysts followed similar trends in activity and selectivity i.e. initial rapid deactivation and increasing propylene selectivity with time on stream. However the propylene selectivity was generally higher on those samples with higher Au loadings. For example the initial selectivity to propylene was 0.3 on the 0.2 wt Au–Ni/SiO 2 and 19 on the 4 wt Au–Ni/SiO 2.

Formation of extended covalently bonded Ni porphyrin

 · Formation of extended covalently bonded Ni porphyrin networks on the Au(111) surface. Sergey A. Krasnikov 1 2 Catherine M. Doyle 1 Natalia N. Sergeeva 3 Alexei B. Preobrajenski 4 Nikolay A. Vinogradov 4 Yulia N. Sergeeva 3 Alexei A. Zakharov 4 Mathias O. Senge 3 Attilio A. Cafolla 1 Nano Research volume 4 pages 376–384 (2011)Cite

Ultrahigh Tensile Strength Nanowires with a Ni/Ni–Au

 · Here we report that our microalloying-based electrodeposition method creates a strong and stable Ni/Ni–Au multilayer nanocrystalline structure by incorporating Au atoms that makes nickel nanowires (NWs) strongest ever under tensile loads even with diameters exceeding 200 nm.

Boron nitride nanosheets decorated with Au Au-Ni Au-Cu

 · The HER overpotential at Au-Ni-BNNS/Au is the smallest and is only 16 mV (at 5 mA cm −2)–30 mV (at 15 mA cm −2) larger than those at Pt electrode. Since the amounts and bonding states of foreign atoms i.e. Ni Cu and Co in NPs are not controlled and are not known it is

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Software and Driver DownloadsNI

 · Popular Driver Downloads. NI-DAQmx. Provides support for NI data acquisition and signal conditioning devices. NI-VISA. Provides support for Ethernet GPIB serial USB and other types of instruments. NI-488.2. Provides support for NI GPIB controllers and NI embedded controllers with GPIB ports. All support resources.

Ternary heterogeneous Pt–Ni–Au nanowires with enhanced

 · Heterogeneous ternary Pt–Ni–Au nanowires (NWs) with randomly distributed Pt–Ni and Pt–Au micro phases were successfully synthesized following an oriented attachment mechanism. The as-prepared NWs exhibit enhanced activity and durability in both a rotating disk electrode (RDE) and single-cell originating fro Chemical Communications HOT Articles