A5003344609- Arsenic contamination and mitigation
- Environmental remediation with nanomaterials
- Pluripotent Stem Cells Research
- Iron oxide chemistry and applications
- Mental Health and Psychiatry
- Graphene and Nanomaterials Applications
- Neurological Disorders and Treatments
- Advanced Photocatalysis Techniques
- Spine and Intervertebral Disc Pathology
- Psychedelics and Drug Studies
- Nanoparticles: synthesis and applications
- Anatomy and Medical Technology
- Catalytic Processes in Materials Science
- Mine drainage and remediation techniques
- Neuroethics, Human Enhancement, Biomedical Innovations
- Organ Donation and Transplantation
- Psychotherapy Techniques and Applications
- Heavy Metal Exposure and Toxicity
- Organ Transplantation Techniques and Outcomes
- Neurological disorders and treatments
- Adsorption and biosorption for pollutant removal
- Copper-based nanomaterials and applications
- Metabolism and Genetic Disorders
- Carbon and Quantum Dots Applications
- EEG and Brain-Computer Interfaces
Regional Centre of Advanced Technologies and Materials
2015-2025
Palacký University Olomouc
2015-2025
Institute of Higher Nervous Activity and Neurophysiology
1988-1989
We report the first example of arsenite and arsenate removal from water by incorporation arsenic into structure nanocrystalline iron(III) oxide. Specifically, we show capability to trap crystal γ-Fe2O3 nanoparticles that are in situ formed during treatment arsenic-bearing with ferrate(VI). In water, decomposition potassium ferrate(VI) yields having core-shell nanoarchitecture a core γ-FeOOH shell. High-resolution X-ray photoelectron spectroscopy in-field (57)Fe Mössbauer give unambiguous...
The removal efficiency of heavy metal ions (cadmium(II), Cd(II); cobalt(II), Co(II); nickel(II), Ni(II); copper(II), Cu(II)) by potassium ferrate(VI) (K2FeO4, Fe(VI)) was studied as a function added amount Fe(VI) (or Fe) and varying pH. At pH = 6.6, the effective Co(II), Ni(II), Cu(II) from water observed at low Fe-to-heavy ion ratio (Fe/M(II) 2:1) while 70% seen for Cd(II) high Fe/Cd(II) weight 15:1. role ionic radius valence state explored conducting similar experiments using Al(III) ions....
Arsenites and arsenates are carcinogenic to humans typically removed from contaminated water using various sorbents. However, these treatment methods result in the secondary release of weakly bound As species require large amounts Here, we introduce a groundbreaking method involving use oxidic-shell-free nanoscale zero-valent iron (OSF-nZVI) treat arsenite/arsenate-polluted underground water. Under anoxic conditions, OSF-nZVI is capable reduce As(III)/As(V) As(0) (up 65% total arsenic...
The ability of bacteria to develop resistance antibiotics is threatening one the pillars modern medicine. It was recently understood that can even silver nanoparticles by starting produce flagellin, a protein which induces their aggregation and deactivation. This study shows covalently bound cyanographene (GCN/Ag) kills silver-nanoparticle-resistant at concentrations 30 times lower than nanoparticles, challenge has been so far unmet. Tested also against multidrug resistant strains,...
Sorption technologies, enabling removal of heavy metals, play a pivotal role in meeting the global demands for unrestricted access to drinking water. Standard sorption technologies suffer from limited efficiency related weak sorbent–metal interaction. Further challenges include development smart metal recovery and sorbent regeneration. To this end, densely functionalized graphene, with 33% by mass content carboxyl groups, linked through direct C–C bonds (graphene acid, GA) represents...
The use of single atoms (SAs) has become a highly investigated topic in heterogeneous catalysis, electrocatalysis, and most recently also photocatalysis. In the field photocatalysis, Pt SAs on TiO 2 have been reported to be efficient co‐catalyst solar H production. Herein, deposition nanoparticles titania nanosheets is investigated. particular, species responsible for high co‐catalytic activity using cyanide leaching process elucidated. It shown that neither 0 nor majority do significantly...
g-C 3 N 4 modified with Pd single atoms – decorated by reactive deposition exhibits remarkable photocatalytic hydrogen production efficiency a low loading of 0.05 wt%, far outperforming nanoparticles.
Abstract Alteration of wet and dry periods affects soil geochemical properties that drive contaminant availability mobility. Consequently, the efficiency remediation may vary, thus management needs to consider these variations. This study reveals effect moisture manipulation on behaviour toxic metalloids antimony (Sb) arsenic (As) immobilisation nanoscale zero‐valent iron (nZVI), biochar (BC) BC modified by or iron/ferrous sulphide (nZVI‐BC Fe/FeS‐BC). Soil samples from an abandoned Sb...
Abstract Pt single atoms (SAs) on TiO 2 have been identified as effective co‐catalysts in solar photocatalytic H production. In this study, SAs is deposited crystal anatase nanosheets (NSs) with minor (101) and major (001) facets expose them to various thermal treatments air, Ar, Ar‐H environments. It found that through annealing Pt‐species can be accumulated exclusively the facets, i.e., they concentrated selectively facet where electron exit occurs. This optimally establishes a high...
Abstract Access to clean water for drinking, sanitation, and irrigation is a major sustainable development goal of the United Nations. Thus, technologies cleaning quality‐monitoring must become widely accessible low‐cost, while being effective, selective, sustainable, eco‐friendly. To meet this challenge, hetero‐bifunctional nanographene fluorescent beacons with high‐affinity pockets heavy metals are developed, offering top‐rated selective adsorption cadmium lead, reaching 870 450 mg g ‐1 ,...
Weathering of ore minerals proceeds through initial transient products to many crystalline secondary minerals. However, the are usually poorly characterized or overlooked because their extremely small particle size, poor crystallinity, and chemical variability. Here, we document strength precession-assisted three-dimensional (3D) electron diffraction in characterization such nanocrystalline phases a case study on uraninite-sulfide weathering Jáchymov (Czech Republic). The glassy,...
Anchoring single metal atoms on suitable substrates is a convenient route towards materials with unique electronic and magnetic properties exploitable in wide range of applications including sensors, data storage, atom catalysis (SAC). Among large portfolio available substrates, carbon-based derived from graphene its derivatives have received growing concern due to their high affinity metals combined biocompatibility, low toxicity, accessibility. Cyanographene (GCN) as highly functionalized...
Silver covalently bound to cyanographene overcomes bacterial-resistance mechanisms silver nanoparticles, eliminating such highly persistent microorganisms at concentrations thirty times lower than free nanoparticles. The strong covalent bonding of clusters the graphenebased 2D matrix imparts very high cytocompatibility compared enhancing real biomedical potential. More details can be found in article number 2003090 by Aristides Bakandritsos, Aleš Panáček, Radek Zbořil, and co-workers.