A5101430944- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Advancements in Battery Materials
- Electrochemical Analysis and Applications
- Graphene research and applications
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Conducting polymers and applications
- Electrochemical sensors and biosensors
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Electrodeposition and Electroless Coatings
- Advanced Chemical Sensor Technologies
- Neural Networks and Applications
- nanoparticles nucleation surface interactions
- Acoustic Wave Resonator Technologies
- Hydrogen Storage and Materials
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Corrosion Behavior and Inhibition
- Graphene and Nanomaterials Applications
- Catalytic Processes in Materials Science
- Cardiac Valve Diseases and Treatments
- Nanotechnology research and applications
- Molten salt chemistry and electrochemical processes
Saints Cyril and Methodius University of Skopje
2012-2023
Guy's and St Thomas' NHS Foundation Trust
2022-2023
Harefield Hospital
2022-2023
University of Cambridge
2002-2011
Over the last few decades, a large number of pH sensitive materials with new compositions and structures have been proposed. Solid state sensors based on organic, inorganic composite are actively investigated, an increasing interest in performance offered by nano-scale materials. Our review provides thorough, up-to-date knowledge wide range measurement methods related sensing materials, firstly introducing well established for then, covering recent developments inorganic, organic...
A model consisting of an equation that includes graphene thickness distribution is used to calculate theoretical 002 X-ray diffraction (XRD) peak intensities. An analysis was performed upon samples produced by two different electrochemical procedures: electrolysis in aqueous electrolyte and molten salts, both using a nonstationary current regime. Herein, the enhanced partitioning corresponding 2θ interval, resulting significantly improved accuracy results. The curves obtained exhibit...
The subject of this study is chemical functionalization as means structural modification multiwalled carbon nanotubes.The main goal the experiments was to create highest density carboxyl groups on nanotubes surface, necessary for further nanocomposite application.Two different types (I: outer diameter d = 50 ÷ 100 nm, purity ≈84%, synthesized by pyrolysis and II: 10 40 ≈94%, vapor deposition) were treated concentrated nitric acid (HNO3) alkaline mixture (NH4OH+H2O2).The medium "milder" less...
There are several accepted methods used for X‐ray diffraction analysis on graphene layers and sample's stacking height L C . The Scherrer equation is avoided since the in samples non‐uniformly distributed therefore have non‐uniform thickness. Instead, a model that includes thickness distribution to calculate average number of then height. was performed 12 produced by high‐temperature electrolysis molten salts. Another method hence samples’ height, Raman spectra ‐peak position method. It...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTContact angle of air bubbles attached to an air-water surface in foam applicationsL. A. Lobo, Nikolov, Dimitrov, P. Kralchevski, and D. T. WasanCite this: Langmuir 1990, 6, 5, 995–1001Publication Date (Print):May 1, 1990Publication History Published online1 May 2002Published inissue 1 1990https://pubs.acs.org/doi/10.1021/la00095a019https://doi.org/10.1021/la00095a019research-articleACS PublicationsRequest reuse permissionsArticle...
The effect of using multiwalled carbon nanotubes (MWCNTs) vs. traditional materials (as e.g., Vulcan XC-72) as supports for mixed non-platinum catalysts hydrogen evolution was studied. Intrinsic changes in catalyst’s structure, surface and activity were registered. It found that MWCNTs significantly improve the a result (i) increase real area catalyst, (ii) improving electrical conductivity electrode, (iii) better dispersion active catalytic centers over electrode (iv) geometric nature...
Abstract This paper describes the development of a simple method for mixed non‐covalent and covalent bonding partially purified inulinase on functionalized multiwall carbon nanotubes ( f‐ MWCNTs) with polypyrrole (PPy). The pyrrole (Py) was electrochemically polymerized MWCNTs in order to fabricate MWCNTs/PPy nanocomposite. Two multiple forms enzyme were bound N‐H functional groups from PPy ‐COO − activated yield stable MWCNTs/PPy/PEG immobilized preparation increased thermal stability....
The structural and electrocatalytic characteristics of composite materials based on non-precious metals were studied. Precursors metallic phase (Ni, Co or CoNi) oxide (TiO2) grafted a carbon substrate (Vulcan XC-72) by the sol-gel procedure thermally treated at 250 ?C. Ni CoNi crystals 10-20 nm produced, in contrast TiO2 amorphous. dissimilar electronic character components gives rise to significant activity for hydrogen evolution reaction (HER), even basic series prepared materials. Further...
The production of carbon nanotubes (CNTs) by electrolysis in molten Li2CO3 was investigated studying the effect electrolyte, temperature electrolyte and cathodic overpotential. Cyclic voltametry clearly shows that instead expected Li discharge cathode as a first reaction, some early electrochemical reaction starts at potential –0.1 V, result which, process intercalation into graphite lattice CNTs formation, deposition occurs with acting substrate. deposit obtained during together solidified...
This study presents the results of design and characterization a gas sensor with PMMA/CNTs chemiresistor as sensing element for detection organic vapors.Multi wall carbon nanotubes (MWCNTs) produced at our lab (by method pyrolysis, outer diameter d = 10 ÷ 40 nm, purity ≈ 94%) were incorporated into biocompatible polymer matrix.Poly(methyl methacrylate) -PMMA -and nanocomposite films obtained using casting solution technique.Produced investigated thermogravimetric analysis, differential...