Jan M. Macák
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View article: Synthesis of PtCu/C Nanostructured Electrocatalysts for the Oxygen Reduction Reaction via One-Step Electrochemical Erosion
Synthesis of PtCu/C Nanostructured Electrocatalysts for the Oxygen Reduction Reaction via One-Step Electrochemical Erosion Open
Reducing the precious metal loading while increasing the oxygen reduction reaction (ORR) mass activity of novel electrocatalysts constitutes one of the remaining key challenges in the widespread application of proton exchange membrane fuel…
View article: Stabilization of Nanoporous Si/Graphite Composite Anodes by Ultrathin Titanicone Coatings
Stabilization of Nanoporous Si/Graphite Composite Anodes by Ultrathin Titanicone Coatings Open
Herein, we report on the stabilization of nanostructured Si/graphite based anodes for Li-ion batteries (LIB) with titanicone against capacity fade and solid electrode interphase (SEI) formation. Nanostructured Si powders were...
View article: Carbon fibers with infiltrated TiO <sub>2</sub> nanocrystalline layers: photocatalytic performance
Carbon fibers with infiltrated TiO <sub>2</sub> nanocrystalline layers: photocatalytic performance Open
Successful TiO 2 infiltration into PAN fibers through Vapor Phase Infiltration (VPI) was shown, and they were converted to CFs@TiO 2 via carbonization. Used for photocatalytic dye degradation, proving VPI-derived CFs@TiO 2 as durable photo…
View article: Wireless electrochemical fabrication of tungsten oxide nanoporous layers in closed bipolar cells
Wireless electrochemical fabrication of tungsten oxide nanoporous layers in closed bipolar cells Open
In this work, the anodization of tungsten (W) foils using closed bipolar electrochemical cells is demonstrated for the first time. The anodization was done using three different electrolytes: (1) 1 M NH4NO3, 1 wt%. H2O in ethylene glycol (…
View article: Steady-State Strategy Synthesis for Swarms of Autonomous Agents
Steady-State Strategy Synthesis for Swarms of Autonomous Agents Open
Steady-state synthesis aims to construct a policy for a given MDP $D$ such that the long-run average frequencies of visits to the vertices of $D$ satisfy given numerical constraints. This problem is solvable in polynomial time, and memoryl…
View article: Revealing Catalytic Properties of Palladium/Gold Systems toward Hydrogen Evolution, Oxidation, and Absorption with Scanning Electrochemical Microscopy
Revealing Catalytic Properties of Palladium/Gold Systems toward Hydrogen Evolution, Oxidation, and Absorption with Scanning Electrochemical Microscopy Open
Palladium (Pd) is an active catalyst for various reactions, such as hydrogen evolution (HER) and hydrogen oxidation (HOR) reactions. However, its activity can be further optimized by introducing strain and ligand effects from Pd deposition…
View article: Palladium Nanocubes with {100} Facets for Hydrogen Evolution Reaction: Synthesis, Experiment and Theory
Palladium Nanocubes with {100} Facets for Hydrogen Evolution Reaction: Synthesis, Experiment and Theory Open
Spatially separated palladium nanocubes (Pd NCs) terminated by {100} facets are synthesized using direct micelles approach. The stepwise seed‐mediated growth of Pd NCs is applied for the first time. The resulting Pd NCs are thoroughly char…
View article: Enhancing Alkaline Hydrogen Evolution Reaction on Ru‐Decorated <scp>TiO<sub>2</sub></scp> Nanotube Layers: Synergistic Role of Ti<sup>3+</sup>, Ru Single Atoms, and Ru Nanoparticles
Enhancing Alkaline Hydrogen Evolution Reaction on Ru‐Decorated <span>TiO<sub>2</sub></span> Nanotube Layers: Synergistic Role of Ti<sup>3+</sup>, Ru Single Atoms, and Ru Nanoparticles Open
Synergistic interplays involving multiple active centers originating from TiO 2 nanotube layers (TNT) and ruthenium (Ru) species comprising of both single atoms (SAs) and nanoparticles (NPs) augment the alkaline hydrogen evolution reaction…
View article: Platinum single atoms on titania aid dye photodegradation whereas platinum nanoparticles do not
Platinum single atoms on titania aid dye photodegradation whereas platinum nanoparticles do not Open
The study revealed that Pt single atoms on TiO 2 enhance AO7 photodegradation through ˙O 2 − production but have no impact on RhB degradation. The distinct behavior is due to different reaction pathways, with Pt nanoparticles exhibiting mi…
View article: Synthesis of titanium phosphide by thermal ALD based on a novel phosphorus precursor
Synthesis of titanium phosphide by thermal ALD based on a novel phosphorus precursor Open
Herein, we present for the first time the synthesis of titanium phosphide (Ti x P y ) by thermal ALD based on in-house synthesized Tris(trimethyltin)phosphide (TMT 3 P) combined with titanium tetrachloride (TiCl 4 ) as the P- and Ti-precur…
View article: Ultrathin ALD Coatings of Zr and V Oxides on Anodic TiO<sub>2</sub> Nanotube Layers: Comparison of the Osteoblast Cell Growth
Ultrathin ALD Coatings of Zr and V Oxides on Anodic TiO<sub>2</sub> Nanotube Layers: Comparison of the Osteoblast Cell Growth Open
The current study investigates and compares the biological effects of ultrathin conformal coatings of zirconium dioxide (ZrO2) and vanadium pentoxide (V2O5) on osteoblastic MG-63 cells grown on TiO2 nanotube layers (TNTs). Coatings were ac…
View article: TiO2 nanotubes grown on Ti and Ti6Al4V alloy spheres by bipolar anodization
TiO2 nanotubes grown on Ti and Ti6Al4V alloy spheres by bipolar anodization Open
In this work, the anodization of spheres of Ti and Ti6Al4V alloy (TiAlV) in glycerol-based electrolytes using bipolar electrochemistry is shown for the first time. TiO2 nanotube (TNT) layers were found over the entire surface area of the T…
View article: Enhancement of biocompatibility of anodic nanotube structures on biomedical Ti–6Al–4V alloy via ultrathin TiO2 coatings
Enhancement of biocompatibility of anodic nanotube structures on biomedical Ti–6Al–4V alloy via ultrathin TiO2 coatings Open
This work aims to describe the effect of the surface modification of TiO 2 nanotube (TNT) layers on Ti-6Al-4V (TiAlV) alloy by ultrathin TiO 2 coatings prepared via Atomic Layer Deposition (ALD) on the growth of MG-63 osteoblastic cells. T…
View article: The Role of Self‐Organized TiO<sub>2</sub> Nanotube Thickness on the Electrochemical Performance of Anodes for Li‐Ion Microbatteriess
The Role of Self‐Organized TiO<sub>2</sub> Nanotube Thickness on the Electrochemical Performance of Anodes for Li‐Ion Microbatteriess Open
Self‐organized TiO 2 nanotube (TNT) layers with different thicknesses are prepared by anodization of Ti foils and then characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy (XPS), an…
View article: Low‐Temperature Atomic Layer Deposition Synthesis of Vanadium Sulfide (Ultra)Thin Films for Nanotubular Supercapacitors
Low‐Temperature Atomic Layer Deposition Synthesis of Vanadium Sulfide (Ultra)Thin Films for Nanotubular Supercapacitors Open
Nanotubular Supercapacitors In article number 2300512, Raul Zazpe and co-workers present the novel synthesis of VxSy by ALD based on the use of TDMAV and H2S in a wide range of temperatures (100-225 °C), and explore the VxSy thin films as …
View article: Biopolymeric fibers prepared by centrifugal spinning blended with ZnO nanoparticles for the treatment of Acne vulgaris
Biopolymeric fibers prepared by centrifugal spinning blended with ZnO nanoparticles for the treatment of Acne vulgaris Open
Acne vulgaris is a serious dermatological disease affecting a significant part of the population. Currently, available therapeutics are effective only at high concentrations, which has a negative environmental and economic impact. In parti…
View article: Photocatalytic degradation of naproxen using TiO2 single nanotubes
Photocatalytic degradation of naproxen using TiO2 single nanotubes Open
Herein, TiO 2 single-tube (TiO 2 ST-NT) powders with and without magnetite Fe 3 O 4 nanoparticles (TiO 2 ST-NT@Fe 3 O 4 NPs) are presented for the first time as excellent photocatalysts for the degradation of one of the most popular non-st…
View article: Low‐Temperature Atomic Layer Deposition Synthesis of Vanadium Sulfide (Ultra)Thin Films for Nanotubular Supercapacitors
Low‐Temperature Atomic Layer Deposition Synthesis of Vanadium Sulfide (Ultra)Thin Films for Nanotubular Supercapacitors Open
Herein, the synthesis of vanadium sulfide (V x S y ) by atomic layer deposition (ALD) based on the use of tetrakis(dimethylamino) vanadium (IV) and hydrogen sulfide is presented for the first time. The (ultra)thin films V x S y are synthes…
View article: Ultrathin TiO<sub>2</sub> Coatings via Atomic Layer Deposition Strongly Improve Cellular Interactions on Planar and Nanotubular Biomedical Ti Substrates
Ultrathin TiO<sub>2</sub> Coatings via Atomic Layer Deposition Strongly Improve Cellular Interactions on Planar and Nanotubular Biomedical Ti Substrates Open
This work aims to investigate the chemical and/or structural modification of Ti and Ti-6Al-4V (TiAlV) alloy surfaces to possess even more favorable properties toward cell growth. These modifications were achieved by (i) growing TiO2 nanotu…
View article: Design of collectors in centrifugal spinning: Effect on the fiber yield and morphology
Design of collectors in centrifugal spinning: Effect on the fiber yield and morphology Open
Centrifugal spinning is an increasingly popular and viable method to produce fibers of different compositions. However, there are still aspects to investigate and improve in the centrifugal spinning process, such as optimizing the fiber yi…
View article: A road for macroporous silicon stabilization by ultrathin ALD TiO <sub>2</sub> coating
A road for macroporous silicon stabilization by ultrathin ALD TiO <sub>2</sub> coating Open
Ultrathin TiO 2 layers deposited by ALD can successfully passivate macroporous silicon while keeping photocatalytic activity.
View article: Top-down surfactant-free electrosynthesis of magnéli phase Ti<sub>9</sub>O<sub>17</sub> nanowires
Top-down surfactant-free electrosynthesis of magnéli phase Ti<sub>9</sub>O<sub>17</sub> nanowires Open
A simple electrochemical surfactant-free top-down methodology for the synthesis of nanowires with non-stoichiometric Magnéli phase Ti 9 O 17 is presented.
View article: Recent advances in TiO<sub>2</sub> nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing
Recent advances in TiO<sub>2</sub> nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing Open
Self‐organized anodic TiO 2 nanotube (TNT) layers prepared by anodization of Ti substrates have attracted great interest within the last 20 years, due to their unique properties and low‐cost synthesis. This mini review article aims to shor…
View article: Non-thermal regimes of laser annealing of semiconductor nanostructures: crystallization without melting
Non-thermal regimes of laser annealing of semiconductor nanostructures: crystallization without melting Open
As-prepared nanostructured semiconductor materials are usually found in an amorphous form, which needs to be converted into a crystalline one for improving electronic properties and achieving enhanced application functionalities. The most …
View article: Bio-AFM exploits enhanced response of human gingival fibroblasts on TiO2 nanotubular substrates with thin TiO2 coatings
Bio-AFM exploits enhanced response of human gingival fibroblasts on TiO2 nanotubular substrates with thin TiO2 coatings Open
The present work studies anodic TiO2 nanotube (TNT) layers and their surface modifications for enhancing the cell behavior of human gingival fibroblast cells (hGFs) with the contribution of bio-AFM (Atomic Force Microscopy) method. TNT lay…
View article: Gas Phase Photocatalysis on Large-Scale TiO<sub>2</sub> Nanotube Layers for Pollutant Degradation: Influence of the Nanotube Crystallinity
Gas Phase Photocatalysis on Large-Scale TiO<sub>2</sub> Nanotube Layers for Pollutant Degradation: Influence of the Nanotube Crystallinity Open
In this work, for the first time, the influence of the crystallinity of TiO2 nanotube (TNT) layers on their gas phase photocatalytic performance was investigated under ISO standards using two distinct model pollutants, namely, hexane and a…