A5079920716- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Advanced Nanomaterials in Catalysis
- Electrospun Nanofibers in Biomedical Applications
- Advanced battery technologies research
- Muscle Physiology and Disorders
- Gold and Silver Nanoparticles Synthesis and Applications
- Additive Manufacturing and 3D Printing Technologies
Polish Academy of Sciences
2013-2023
Institute of Physical Chemistry
2014-2022
University of Warsaw
2016
Numerous properties from metal nanostructures can be tuned by controlling both their size and shape. In particular, the latter is extremely important because type of crystalline surface affects electronic density. This paper describes a simple approach to synthesis highly-structured, anisotropic palladium nanostructured dendrites. They were obtained using an eco-friendly biomolecule 5-hydroxytryptophan, which acts as reducing stabilizing agent. The growth mechanism proposed for evolution...
Abstract In this work, we present an innovative, high-throughput rotary wet-spinning biofabrication method for manufacturing cellularized constructs composed of highly-aligned hydrogel fibers. The platform is supported by innovative microfluidic printing head (MPH) bearing a crosslinking bath microtank with co-axial nozzle placed at the bottom it immediate gelation extruded core/shell After thorough characterization and optimization new MPH fiber deposition parameters, demonstrate...
Porous carbon nanohybrids are promising materials as high-performance electrodes for both sensing and energy conversion applications. This is mainly due to their high specific surface area physicochemical properties. Here, new porous nanohybrid developed based on exfoliated MoS2 nanopetals either negatively charged phenylsulfonated nanoparticles or positively sulfonamide functionalized nanoparticles. not only act a scaffold form 3D hierarchical architectures but also result in well-separated...
Stable polymeric materials with embedded nano-objects, retaining their specific properties, are indispensable for the development of nanotechnology. Here, a method to obtain Pt, Pd, Au, and Ag nanoparticles (ca. 10 nm, independent metal) by reduction ions in pectin, absence additional reducing agents, is described. Specific interactions between pectin functional groups were detected, they depend on metal. Bundles protruding present surface nanoparticles/pectin films. These films, deposited...
Abstract Glucose electrooxidation at a glassy carbon rotating disk electrode in an alkaline bimetallic suspension of Au and Pt nanoparticles is studied. The voltammetric current density approximately fourfold larger than measured for three orders magnitude observed nanoparticles. features these voltammograms are classically different from obtained suspensions or under the same conditions. most significant signal arises mainly electrocatalytic oxidation glucose adsorbed on electrode.
Although the electrochemical behaviour of an aqueous dispersion nanometer-sized redox active nanoparticles has recently received some attention, there are very few such studies larger objects. Here, we present a study (2,2′-azino-bis-(3-ethylbenzothiazoline)-6-sulfonate)-tagged multiwalled carbon nanotubes at rotating disc electrode. The signal related to adsorbed redox-tagged was recorded by cyclic voltammetry, while collisions their agglomerates or aggregates detected using...
Abstract Electrodes modified with oppositely charged platinum and gold nanoparticles exhibit electrocatalytic synergy of glucose oxidation. Such a simple method preparation bimetallic nanoparticulate films produces an electrode significant shift the onset potential as compared to electrodes prepared only from (ca. 0.45 V) or 0.6 nanoparticles. The observed effect results close proximity Au Pt surfaces within film. was also characterized by scanning electron microscopy, X‐ray photoelectron...
Electrocatalysis at nanoparticles modified electrode has recently received huge attention because of the development new sensors and energy conversion systems. The employment two metals, with different catalytic properties are sometimes superior from point view reaction efficiency overpotential decrease. Here, we demonstrate how electrocatalytic behavior bimetallic noble metal nanostructures prepared types as compared single type on example glucose oxidation. nanoparticulate films were...
Abstract The electrochemical behaviour of suspended nanoparticles received some attention recently. Very few studies are performed in the flow system. Here, we have demonstrated that injection positively charged (with ammonium functionalities) carbon suspension to flowing ascorbic acid solution significantly enhances its chronoamperometric response and can be used for these detection. This is because electrocatalytic properties towards electrooxidation. magnitude signal depends on type...
The electrochemical studies of suspended nanoparticles became an important method their characterisation. In reported research, Prussian Blue served as a model redox active nanoobjects for in forced convection conditions. Recently, (M. Holdynski et al. Electrochem. Commmun. 86 (2018) 130–134), we have demonstrated that injection these suspension into cell results sharp decrease or increase the current at glassy carbon rotating disc electrode set potential corresponding to electroreduction...