A5030335789- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Corrosion Behavior and Inhibition
- Catalysis and Oxidation Reactions
- Graphene research and applications
- Extraction and Separation Processes
- Nanomaterials for catalytic reactions
- TiO2 Photocatalysis and Solar Cells
- Metal Extraction and Bioleaching
- Gas Sensing Nanomaterials and Sensors
- Recycling and Waste Management Techniques
- Electrodeposition and Electroless Coatings
- Materials Engineering and Processing
- Advancements in Battery Materials
- Water Quality Monitoring and Analysis
- Magnesium Oxide Properties and Applications
- Advanced Memory and Neural Computing
- Analytical Chemistry and Sensors
- Food Drying and Modeling
- Electrospun Nanofibers in Biomedical Applications
University of Belgrade
2016-2024
Institute of Chemistry
2017
Institute of Chemistry, Technology and Metallurgy
2016-2017
Pt/TiO2 composites were synthesized by single-step ultrasonic spray pyrolysis (USP) at different temperatures. In an in-situ method, Pt and TiO2 particles generated from tetra-n-butyl orthotitanate chloroplatinic acid, hydrothermally-prepared colloidal dispersion served as support in ex-situ USP approach. USP-synthesized the form of a solid mixture, morphologically organized nesting huge hollow small spheres, or core/Pt shell regular spheroids respectively. This paper exclusively reports on...
Polygonal Pt nanoparticles were synthesized using ultrasonic spray pyrolysis (USP) at different precursor concentrations. Physicochemical analysis of the particles involved thermogravimetric, microscopic, electron diffractive, and light absorptive/refractive characteristics. Electrochemical properties activity in oxygen reduction reaction (ORR) prepared material compared to commercial black. Registered electrochemical behavior is correlated structural powders by impedance characteristics...
Abstract This work reports the galvanostatical electrodeposition of Pd and Sb‒Pd catalysts on rotating glassy carbon (GC) electrode using surfactant-free electrolytes prepared were tested is electro-oxidation reactions in alkaline solutions. Characterization was performed with scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS) photoelectron (XPS) technique. Cyclic voltammetry (CV) chronoamperometry applied order to study electrocatalytic behavior ethanol oxidation...
Abstract A simple one‐step microwave‐assisted and temperature‐controlled hydrothermal synthesis was applied to prepare a nanocrystalline RuO 2 dispersion from an aqueous solution of RuCl 3 for supercapacitive applications. The obtained dispersions were subjected dynamic light scattering in order analyze the particle size distribution, whereas morphology structural properties solid phase investigated by using AFM, SEM, EDX, TEM, XRD techniques. Ellipsoidally shaped 100–500 nm‐sized compact...
The applicability of Peleg?s model was investigated for predicting mass transfer kinetics during osmotic dehydration (OD) process pears, at different concentrations (40%, 60% and 70% w/w) temperatures (20?C, 35?C 50?C) sucrose solution. Increase in solution concentration resulted higher water loss (WL) solid gain (SG) values through the treatment period. After 360 minutes WL ranges from 23.71 % to 31.68 20?C, 24.80 40.38 33.30 52.07 50 ?C initial weight pears. increase dry samples, SG, after...
Composites of graphene and SnO2 were successfully prepared by a single step simultaneous synthesis reduction oxide (GO). Three different compositions precursor solution resulted in composite materials containing SnO2. The reaction was realized microwave-assisted hydrothermal synthesis. Scanning electron microscopy (SEM) energy-dispersive X-ray spectroscopy (EDX) gave insight into the morphology composition obtained materials. Good capacitive/pseudocapacitive properties material suitable for...
TiO2 powder was synthesized by a forced hydrolysis process and used for the synthesis of Pt/TiO2 composite that is to be foreseen as an advanced electrode material.Pt incorporated into from Pt colloidal dispersion precursor prepared microwave-assisted polyol process.Physicochemical properties TiO2-supported were investigated scanning electron microscopy, dynamic light scattering X-ray spectroscopy diffraction techniques.The are correlated basic voltammetric response its thin-layer form.It...
Leaching solutions of complex ore concentrates are reach in different elements, some hindering the extraction others. Chemically similar elements difficult to extract using conventional separation methods. Electrochemical techniques employed for Co and Ni selective out so-called pregnant leaching solution (PLS). Selective electrodeposition chronoamperometry (CA) as a tool was used cobalt /or nickel from solution. Besides ions depositing at applied cathodic potential, hydrogen evolution...
<p><span lang="EN-US">Cyclic voltammetry (CV) measurements were conducted and analyzed for a preliminary estimation of the stability composite electrocatalysts based on Pt. The changes in CV currents platinum nanoparticles supported TiO<sub>2</sub> compared to those commercial carbon. was synthesized by sol-gel method Pt deposited from colloidal dispersion microwave-assisted polyol process. It found that component both Pt/TiO<sub>2</sub> Pt/C behaves...
Determination of the extractive behavior ionic species from lateritic ore leachates is complex, since are pregnant with tens different ions in, as a rule, multiple oxide states. To examine possible pathways intrinsic electrochemical extraction crucial elements Ni and Co, it was necessary to make model solutions these subject them examination techniques in order obtain benchmark. Beside system for Fe had be evaluated. Iron, dominant component by far, main interfering factor processes Co...
The influence of different hydroxides, applied to activate carbon black, on the electrochemical properties activated was investigated. material prepared by hydrothermal treatment sucrose and afterwards thermally using KOH, NaOH LiOH. obtained samples were examined cyclic voltammetry impedance spectroscopy correlated their physicochemical properties. All showed characteristic capacitor-like behaviour. highest specific capacitance for KOH-treated sample, while increase in follows sequence...
Electrochemical impedance characteristics of bare Al and with CeO2 coating prepared sol-gel procedure from the ceria sol are investigated. The corrosion behavior is monitored during exposure to 3 wt. % NaCl aqueous solution. Experimental data fitted various equivalent electrical circuits special attention inductive features. Equivalent involving inductivity represent response equally well as ones without inductivity, although parameter values gained former correspond better proposed model...
Spherical TiO2/RuO2 particles were synthesized by ultrasonic spray pyrolysis (USP) at 200 and 800°C. The activity for the oxygen chlorine evolution reactions (OER CER, respectively) dynamic responses from electrochemical impedance spectroscopy (EIS) of USP powders, as well corresponding coatings on Ti, analyzed are discussed. loss coating is discussed with respect to differences in EIS cyclic voltammetry their active inactive states. 800°C-USP sample was found be more than 200°C-USP both CER...