Preparation and Characterization of Electrodes Modified with Metalloporphyrins. Application to Reduction of Nitrite

2003 ◽  
Vol 68 (9) ◽  
pp. 1723-1735 ◽  
Author(s):  
Francisco Armijo ◽  
Ejnar Trollund ◽  
Matías Reina ◽  
M. Carmen Arévalo ◽  
M. Jesús Aguirre
Keyword(s):  
Atomic Force Microscopy ◽  
Cyclic Voltammetry ◽  
Modified Electrodes ◽  
Amino Groups ◽  
Catalytic Behavior ◽  
Force Microscopy ◽  
Atomic Force ◽  
Vis Spectroscopy ◽  
Hcl Solution

Six type-modified electrodes by electropolymerization of tetrakis(x-aminophenyl)porphyrins, where x = 2, 3 or 4, and their Cu(II) and Ni(II) complexes in HCl solution were prepared and characterized by cyclic voltammetry, atomic force microscopy and UV-VIS spectroscopy. The morphology of the polymers depends on the position of the amino groups. The modified electrodes show interesting electrocatalytic activity toward reduction of nitrites. The catalytic behavior strongly depends on the nature of the metal and the position of the amino groups.

Stereometric characterization of Dinizia excelsa Ducke wood from Amazon rainforest using atomic force microscopy

2021 ◽  
Author(s):  
Willian Silva Conceição ◽  
Ştefan Ţălu ◽  
Robert Saraiva Matos ◽  
Glenda Quaresma Ramos ◽  
Fidel Guereiro Zayas ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Amazon Rainforest ◽  
Force Microscopy ◽  
Atomic Force ◽  
Dinizia Excelsa

Nanocrystalline Solutions as Precursors to The Spray Deposition of Cdte Thin Films

1995 ◽  
Vol 382 ◽  
Author(s):  
Martin Pehnt ◽  
Douglas L. Schulz ◽  
Calvin J. Curtis ◽  
Helio R. Moutinho ◽  
Amy Swartzlander ◽  
...  
Keyword(s):  
Thin Films ◽  
Atomic Force Microscopy ◽  
Grain Size ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Cdte Nanoparticles ◽  
Atomic Force ◽  
Vis Spectroscopy ◽  
Cdte Thin Films

ABSTRACTIn this article we report the first nanoparticle-derived route to smooth, dense, phase-pure CdTe thin films. Capped CdTe nanoparticles were prepared by injection of a mixture of Cd(CH3)2, (n-C8H17)3 PTe and (n-C8H17)3P into (n-C8H17)3PO at elevated temperatures. The resultant nanoparticles 32-45 Å in diameter were characterized by x-ray diffraction, UV-Vis spectroscopy, transmission electron microscopy, thermogravimetric analysis and energy dispersive x-ray spectroscopy. CdTe thin film deposition was accomplished by dissolving CdTe nanoparticles in butanol and then spraying the solution onto SnO2-coated glass substrates at variable susceptor temperatures. Smooth and dense CdTe thin films were obtained using growth temperatures approximately 200 °C less than conventional spray pyrolysis approaches. CdTe films were characterized by x-ray diffraction, UV-Vis spectroscopy, atomic force microscopy, and Auger electron spectroscopy. An increase in crystallinity and average grain size as determined by x-ray diffraction was noted as growth temperature was increased from 240 to 300 °C. This temperature dependence of film grain size was further confirmed by atomic force microscopy with no remnant nanocrystalline morphological features detected. UV-Vis characterization of the CdTe thin films revealed a gradual decrease of the band gap (i.e., elimination of nanocrystalline CdTe phase) as the growth temperature was increased with bulk CdTe optical properties observed for films grown at 300 °C.

Characterization of mitochondria isolated from normal and ischemic hearts in rats utilizing atomic force microscopy

Micron ◽  
2011 ◽  
Vol 42 (3) ◽  
pp. 299-304 ◽  
Author(s):  
Gi-Ja Lee ◽  
Su-Jin Chae ◽  
Jae Hoon Jeong ◽  
So-Ra Lee ◽  
Sang-Jin Ha ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force

Characterization of carbon films microstructure by atomic force microscopy and Raman spectroscopy

1994 ◽  
Vol 76 (6) ◽  
pp. 3443-3447 ◽  
Author(s):  
J. M. Yáñez‐Limón ◽  
F. Ruiz ◽  
J. González‐Hernández ◽  
C. Vázquez‐López ◽  
E. López‐Cruz
Keyword(s):  
Raman Spectroscopy ◽  
Atomic Force Microscopy ◽  
Carbon Films ◽  
Force Microscopy ◽  
Atomic Force

Characterization of Batch-Microfabricated Scanning Electrochemical-Atomic Force Microscopy Probes

2005 ◽  
Vol 77 (2) ◽  
pp. 424-434 ◽  
Author(s):  
Phillip S. Dobson ◽  
John M. R. Weaver ◽  
Mark N. Holder ◽  
Patrick R. Unwin ◽  
Julie V. Macpherson
Keyword(s):  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force
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