Najdoski, Metodija
Preferred name
Najdoski, Metodija
Official Name
Najdoski, Metodija
Main Affiliation
Email
metonajd@pmf.ukim.mk
21 results
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Item type:Publication, Chemical bath deposition and characterization of electrochromic thin films of sodium vanadium bronzes(Elsevier BV, 2012-03); ;Koleva, VioletaDemiri, Sani - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Preparation, Structural, Thermogravimetric and Spectroscopic Study of Magnesium Potassium Arsenate Hexahydrate(Wiley, 2014-10-23) ;Abdija, Zuldjevat; ;Koleva, Violeta ;Runčevski, TomčeDinnebier, Robert E. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Chemical bath deposition and characterization of electrochromic thin films of sodium vanadium bronzes(Elsevier BV, 2012-03); ;Koleva, VioletaDemiri, Sani - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Thermal, spectral and microscopic studies of water-rich hydrate of the type Mg2KH(PO4)2·15H2O. Thermal transformations(Elsevier BV, 2015-11) ;Koleva, Violeta; ; Cahil, Adnan - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple chemical method for visualization of sebaceous fingerprints on unfired cartridge cases by Prussian blue deposition(Pleiades Publishing Ltd, 2015-11); ;Oklevski, SlobodanStojković, Goran - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Facile Synthesis of Cu<sub>x</sub>S Electrocatalysts for CO<sub>2</sub> Conversion into Formate and Study of Relations Between Cu and S with the Selectivity(Wiley, 2024-10-25) ;Stojkovikj, Sasho ;El‐Nagar, Gumaa A. ;Gupta, Siddharth; Koleva, Violeta<jats:title>Abstract</jats:title><jats:p>The conversion of CO<jats:sub>2</jats:sub> into formate (HCOO<jats:sup>−</jats:sup>), a techno‐economically feasible product, can be achieved using earth‐abundant Cu<jats:sub>x</jats:sub>S electrocatalysts, but questions remain regarding how catalyst structure, composition, and reaction environment influence product selectivity. A novel synthesis method based on electrodeposition of Cu foam and its subsequent sulfidation via immersion in sulfur saturated toluene solution resulted in Cu<jats:sub>x</jats:sub>S foams. Catalytic activity studies found that HCOO<jats:sup>−</jats:sup> selectivity is dependent on electrochemical activation at higher overpotentials. To understand the effects of activation, determine the active forms of the catalysts, and identify the role of sulfur, the electrodes are carefully characterized as well as gaseous and sulfur dissolved in electrolyte. This included study of the effects of intentional addition of solution sulfur species, identification of the sulfur loss, determination of the electrode composition and relating sulfur speciation to observed product selectivity. It is found that residual sulfur stabilizes Cu<jats:sup>+</jats:sup> during electrolysis at potentials favoring HCOO<jats:sup>−</jats:sup> production, in contrast to pristine Cu that undergoes complete reduction and shows poor HCOO<jats:sup>−</jats:sup> selectivity. Sulfur in both the catalyst and dissolved in electrolyte are of dynamic nature, and surface residues of SO<jats:sub>4</jats:sub><jats:sup>2−</jats:sup> species are identified in all activated catalysts which correspond with enhanced HCOO<jats:sup>−</jats:sup> production.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple chemical method for deposition of electrochromic potassium manganese oxide hydrate thin films(Elsevier BV, 2012-09); ;Koleva, Violeta ;Demiri, SaniStojkovikj, Sasho - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Thermal analysis of multi-walled carbon nanotubes material obtained by catalytic pyrolysis of polyethylene(Society of Chemists and Technologists of Macedonia, 2015-11-12) ;Buzarovska, Aleksandra; ; Bogoeva-Gaceva, Gordana<jats:p><h2>Abstract</h2><p>Chemical recycling of nonbiodegradable postconsumer polymers represents a promising route for conversion of waste plastics into feedstock for fuel, chemicals and materials production. Recently, waste plastics have been used as low cost feedstock for carbon nanotubes growth. In this work thermal behavior of multiwalled carbon nanotubes material (MWCNTs), obtained by catalytic pyrolysis of waste low-density polyethylene, has been analyzed. Following the improved protocol, developed few years ago for thermal analysis of CNTs, thermogravimetric analysis of the MWCNTs material has been performed using heating rates of 2-20 <sup>o</sup>C<sup>.</sup>min<sup>-1</sup> and curve fitting method in an attempt to quantify the complex oxidation behavior of the material. It has been shown that competitive oxidation/combustion processes greatly influence the DTG curves and the number of fitted peaks.</p></jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Influence of vanadium concentration and temperature on the preparation of electrochromic thin films of ammonium intercalated vanadium(v) oxide xerogel nanoribbons(Royal Society of Chemistry (RSC), 2014); ;Koleva, VioletaSamet, Aksu<p>A new and simple chemical method for deposition of thin films of ammonium intercalated V<sub>2</sub>O<sub>5</sub>·<italic>n</italic>H<sub>2</sub>O xerogels has been designed.</p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Preparation of electrochromic thin films by transformation of manganese(II) carbonate(Elsevier BV, 2013-10) ;Stojkovikj, Sasho; ;Koleva, VioletaDemiri, Sani
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