Synthesis of magnetite nanoparticles stabilized by polyvinylpyrrolidone and analysis of their absorption bands

Pasichnyk, Mariia; Kucher, Elena; Hyrlya, Lyudmila

doi:10.15587/1729-4061.2018.132057

Cited by 3 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By controlling the finishing processes of the textile material, it is easy to create the required porosity, increase filter life, and save material properties. Nanofillers in the polymer composition can provide high durability for fabrics because nanoparticles have a large surface area-to-volume ratio and high surface energy 8 , thus presenting better fabric affinity and increasing durability 9 . Furthermore, the photoactivity of modified textiles was investigated in the decontamination of organic dyes 10 , 11 and degradation of gaseous pollutants 12 .…”

Section: Introductionmentioning

confidence: 99%

Development of polyester filters with polymer nanocomposite active layer for effective dye filtration

Pasichnyk

Gaálová

Minárik

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Organic dyes such as methyl orange (MO) and methylene blue (MB) are widely used in different industries and have become one of the leading emerging water contaminants. The purpose of the current research is to develop new polymer nanocomposite filters for the effective elimination of the dyes, which are non-biodegradable and not efficiently removed by traditional treatment methods. New padded and covered filters were produced applying polystyrene-acrylic/ZnO nanocomposite on the polyester surface by blade coating and one-bath pad methods. Principal results determined by SEM analysis confirm that functionalised layer can create unprecedented function of filter textile material depending on the way of treatment. Due to the modification, the surface area increased from 5.9 for untreated polyester to 85.2 (padded), 44.6 (covered) m2/g. The measured pore size of produced filters is around 3.4 nm, which corresponds to the mesoporous structure. Our study reported effective filters with the rate of MB and MO removal efficiencies up to 60%. Moreover, a colourless reduced form of MB—leuco-methylene blue (LMB) could be created. The functionalised layer of the developed filters through hydrogen bonding between the –OH groups of styrene-acrylic molecules and the –N(CH3)2 groups on LMB can stabilise LMB.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of polyester filters with polymer nanocomposite active layer for effective dye filtration

Pasichnyk

Gaálová

Minárik

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

Perennial fluctuations of river runoff of the Yesil river basin

Makhmudova

Moldakhmetov²,

Mussina

et al. 2021

PEN

View full text Add to dashboard Cite

Methods of professionally-oriented teaching of physics to students of technical universities

Zhanbekova,

Kozybay,

Nurakhmetova

et al. 2024

Scientific Herald of Uzhhorod University Series Physics

View full text Add to dashboard Cite

Relevance. The study of technical, and especially physical, education at the secondary and higher education levels in recent years has focused more on the exploration of concepts or understanding than on the development of skills and values. The least attention was paid to the development of values. Teaching physics in lectures often emphasises concepts and their interrelation, while the laboratory class also focuses on the development of laboratory skills. Purpose. The purpose of the study is to investigate the methods of professionally-oriented teaching of physics to students of technical universities. Methodology. Systematic review can be explained as a research method and process for identifying and critically evaluating relevant studies, and for collecting and analysing data from these studies. When promoting physics among the population and encouraging students to pursue a career in physics, emphasis is usually placed on developing the ability to solve problems in physics. In the review of the value of the physics diploma, graduates of the technical university emphasised the importance of skills in their profession. Results. It is assumed that with the help of an interactive way of teaching physics, it would be possible to eliminate students' misconceptions, reduce the dropout rate of first-year students, and also increase the level of students' knowledge in introductory general physics courses, mainly in the field of mechanics. Conclusions. The concept of "knowledge in motion" combined with theories in the workplace can offer a useful conceptual union for studying the nature of professional knowledge, which is taught to students of technical specialities after vocational education and training courses. This suggests that professional knowledge, rather than as a dichotomy, is perhaps more correctly viewed as distributed and networked.

show abstract

Synthesis of magnetite nanoparticles stabilized by polyvinylpyrrolidone and analysis of their absorption bands

Cited by 3 publications

References 11 publications

Development of polyester filters with polymer nanocomposite active layer for effective dye filtration

Development of polyester filters with polymer nanocomposite active layer for effective dye filtration

Perennial fluctuations of river runoff of the Yesil river basin

Methods of professionally-oriented teaching of physics to students of technical universities

Contact Info

Product

Resources

About