About department

Field of Scientific Interest

The main focus in the research of the Department of Hydrosilicates has been on the composition and properties of the fine fractions of bentonites, the clay raw materials containing dominantly montmorillonite or other minerals of the smectite group. Mineralogical and chemical composition and chemical modifications, including replacement of exchangeable cations by various inorganic and organic cations of selected properties and cationic dyes, partial dissolution in acids have been recently studied using mainly spectroscopic methods. Original interpretation of the first overtones and combination vibrations showed that near-infrared spectroscopy provides valuable information on the structure of analysed materials. Hybrid materials based on clay minerals and cationic dyes exhibit interesting properties, such as changes of the energy of absorbed and emitted light, excitation energy transfer, photosensitization, optical anisotropy, etc. These changes are related to the formation of specific supramolecular assemblies of dye cations on the surface of clay mineral particles.

 

  • Head of department: Ing. Helena Pálková, PhD.

 

Selected publications

BOHÁČ, Peter**CZÍMEROVÁ, Adriana – SASAI, Ryo – BUJDÁK, Juraj. Luminescence and resonance energy transfer in the colloids of cyanine dyes and saponite modified with cationic surfactants. In Applied Clay Science, 2020, vol. 189, p. 105536-1-105536-9.

BUJDÁK, Juraj**. Adsorption kinetics models in clay systems. The critical analysis of pseudo-second order mechanism. In Applied Clay Science, 2020, vol. 191, p. 105630-1-105630-7.

DU, Weichao** – SLANÝ, Michal* – WANG, Xiangyun – CHEN, Gang – ZHANG, Jie. The inhibition property and mechanism of a novel low molecular weight zwitterionic copolymer for improving wellbore stability. In Polymers: Open Access Polymer Science Journal, 2020, vol. 12, no. 3, p. 708-1-708-13.

DU, Weichao** – WANG, Xiangyun – CHEN, Gang – ZHANG, Jie – SLANÝ, Michal**. Synthesis, property and mechanism analysis of a novel polyhydroxy organic amine shale hydration inhibitor. In MINERALS-BASEL, 2020, vol. 10, no. 2, p. 128-1-128-14.

MADEJOVÁ, Jana – JANKOVIČ, Ľuboš – SLANÝ, Michal – HRONSKÝ, Viktor. Conformation heterogeneity of alkylammonium surfactants self-assembled on montmorillonite: Effect of head-group structure and temperature. In Applied Surface Science, 2020, vol. 503, no., p. 144125-1-144125-11.

OPÁLKOVÁ ŠIŠKOVÁ, Alena** – DVORÁK, Tomáš – ŠIMONOVÁ BARANYAIOVÁ, Tímea – ŠIMON, Erik – ECKSTEIN ANDICSOVÁ, Anita – ŠVAJDLENKOVÁ, Helena – OPÁLEK, Andrej – KRÍŽIK, Peter – NOSKO, Martin. Simple and eco-friendly route from agro-food waste to water pollutants removal. In Materials, 2020, vol. 13, art. no. 5424, [21] p.

OSACKÝ, Marek** – PÁLKOVÁ, Helena – HUDEC, Pavol – CZÍMEROVÁ, Adriana – GALUSKOVÁ, Dagmar – VÍTKOVÁ, Martina. Effect of alkaline synthesis conditions on mineralogy, chemistry and surface properties of phillipsite, P and X zeolitic materials prepared from fine powdered perlite by-product. In Microporous and Mesoporous Materials, 2020, vol. 294, p. 109852-1-109852-11.

PÁLKOVÁ, Helena**KUREKOVÁ, ValériaMADEJOVÁ, JanaNETRIOVÁ, Zuzana – UHLÍK, Peter – VARGA, Peter – HRONSKÝ, Viktor – LEXA, Jaroslav. Determination of water content in raw perlites: Combination of NIR spectroscopy and thermoanalytical methods. In Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2020, vol. 240, art. no. 118517.

VALÁŠKOVÁ, Marta** – MADEJOVÁ, Jana – INAYAT, Amer – MATĚJOVÁ, Lenka – RITZ, Michal – MARTAUS, Alexandr – LEŠTINSKÝ, Pavel. Vermiculites from Brazil and Palabora: Structural changes upon heat treatment and influence on the depolymerization of polystyrene. In Applied Clay Science, 2020, vol. 192, p. 105639-1-105639-11.

 

 

International and National Projects

Polymer surfaces modified with layered nanoparticles and photoactive dyes
(Povrchy polymérov modifikované vrstevnatými nanočasticami a fotoaktívnymi farbivami)
Programme: APVV-18-0075
Project coordinator IIC: Ing. Pálková Helena PhD.
Duration: 07/2019-06/2023
Functionalization of clay minerals using unconventional organic surfactants
(Funkcionalizácia ílových minerálov netradičnými organickými surfaktantmi)
Programme: VEGA 2/0141/17
Project coordinator IIC: RNDr. Madejová Jana DrSc.
Duration: 01/2017-12/2020
Nanomat – Nanocomposite materials based on organo-phosphonium smectites and polymers
(Nanokompozitné materiály na báze organo-fosfóniových smektitov a polymérov)
Programme: APVV-15-0741
Project coordinator IIC: Mgr. Ľuboš Jankovič, PhD.
Partner: Institute of Polymers SAS
Duration: 07/2016-06/2020
BiofNano – Prevention and eradication of microbial biofilms in relationship to nanomaterials
(Prevencia a eradikácia mikrobiálnych biofilmov vo vzťahu k nanomateriálom)
Programme: APVV-15-0347
Project coordinator: Faculty of Natural Sciences Comenius University, Bratislava
Principal investigator IIC: doc. RNDr. J. Bujdák, DrSc.
Duration: 07/2016-06/2020

 

Foreign cooperating institutions

  • Heyrovsky Institute of Physical Chemistry of the ASCR, Prague, Czech Republic
  • Institute of Chemistry, Academy of Sciences of the Czech Republic, Czech Republic
  • Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Krakow, Poland
  • Institute of Polymers, Bulgarian Academy of Sciences, Sofia, Bulgaria
  • University of Poitiers, CNRS, HydrASA, Poitiers, France
  • University of Aveiro, Aveiro, Portugal
  • University of Ioannina, Ioannina, Greece
  • Sheffield Hallam University, Sheffield, UK
  • National Institute for Materials Science, Tsukuba, Japan
  • Nagoya University, Graduate School of Engineering, Nagoya, Japan
  • Tokyo Metropolitan University Faculty of Urban Environmental Sciences, Tokyo, Japan
  • Yamaguchi University, Graduate School of Medicine, Yamaguchi, Japan
  • University of Illinois, Champaign-Urbana, USA
  • Monash University, Melbourne, Australia