Synthesis of Chalcogen-Containing Nanocomposites of Selenium and Tellurium with Arabinogalactan and a Study of Their Toxic and Antimicrobial Properties

Соседова, Л. М.; Рукавишников, В. С.; Сухов, Б. Г.; Боровский, Г. Б.; Титов, Е. А.; Новиков, М. А.; Vokina, Vera A.; Yakimova, N. L.; Lesnichaya, M. V.; Конькова, Т. В.; Borovskaya, M. K.; Граскова, И. А.; Perfileva, А. I.; Трофимов, Б. А.

doi:10.1134/s1995078018030175

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…[ 17 ] It also impacts the material's thermal and chemical stability, with selenium and tellurium compounds often displaying greater environmental and health considerations due to increased toxicity. [ 18 ] These changes expand the semiconductor's applicability, particularly in infrared optics, [ 19 ] photovoltaics, [ 20 ] and thermoelectric devices, [ 21 ] tailoring them for specific technological needs.…”

Section: Introductionmentioning

confidence: 99%

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)

Alhussain,

Ferjani,

Ben Smida

2024

Cryst. Res. Technol.

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In this work, the Density Functional Theory (DFT) analysis of the Tl2SnX3 series (X = S, Se, Te) is performed, and the ground states are confirmed by the calculation of the elastic constant Cij. Based on the DFT calculation, the Tl2SnX3 structures are direct‐gap semiconductors with bandgaps of 1.434, 1.181, and 0.907 eV, respectively. Chalcogen substitution significantly impacts their electronic structures, notably increasing the Density of States (DOS) width in the valence band from sulfur to tellurium, and shifting the dielectric function's real part, ε1(ω), toward lower energies. This change means that the optical activity and response to electric fields are better, with Tl2SnTe3 showing the best polarization response and light‐matter interaction abilities. Optical tests show that Tl2SnTe3 has very high optical absorption, peaking at ≈17 × 104 cm−1 along [010], and reflectivity levels above 90%, marking its suitability for high‐reflectivity applications. Moreover, loss energy function analysis also shows that Tl2SnTe3 has a strong electron loss resonance at lower energies, which means it has strong interactions with electrons.

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Section: Introductionmentioning

confidence: 99%

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)

Alhussain,

Ferjani,

Ben Smida

2024

Cryst. Res. Technol.

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“…For instance, Te 0 NPs have demonstrated significant bactericidal effects against methicillin-resistant Staphylococcus aureus [ 15 ], Pseudomonas aeruginosa , Salmonella typhi , Klebsiella pneumonia [ 13 ], E. coli , P. aeruginosa , S. typhi , MRSA , C. albicans , and C. dubliniensis , among other pathogens. In addition, we found a pronounced antimicrobial effect against the bacterial phytopathogen Clavibacter sepedonicus in our preliminary studies on the production of Ar-Gal-based Te 0 NPs using tellurium oxide as a source for nanoparticles [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of Polysaccharide Matrices as a Basis for the Formation of Tellurium Nanoparticles with Different Morphologies

Zvereva

2024

Polymers

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The widening of possible areas of practical uses for zero-valent tellurium nanoparticles (Te0NPs) from biomedicine to optoelectronic and thermoelectric applications determines the actuality of the development of simple and affordable methods for their preparation. Among the existing variety of approaches to the synthesis of Te0NPs, special attention should be paid to chemical methods, and especially to “green” approaches, which are based on the use of precursors of tellurium in their powder bulk form and natural galactose-containing polysaccharides—arabinogalactan (Ar-Gal), galactomannan—(GM-dP) and κ-carrageenan (κ-CG) acting as ligands stabilizing the surface of the Te0NPs. The use of basic-reduction system “N2H4 H2O-NaOH” for preliminary activation of bulk-Te and Ar-Gal, GM-dP and κ-CG allowed us to obtain in aqueous medium a number of stable nanocomposites consisting of Te0NPs stabilized by the polysaccharides’ macromolecules. By varying the precursor ratio, different morphologies of nanoparticles were obtained, ranging from spheres at a polysaccharide/Te ratio of 100:1 to rice-like at a 10:1 ratio. The type (branched, combed, or linear sulfated) of polysaccharide and its molecular weight value determined the size of the nanoparticles. Thus, the galactose-containing polysaccharides that were selected for this study may be promising renewable materials for the production of water-soluble Te0NPs with different morphology on this basis.

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“…In our opinion, these disadvantages can be avoided by applying the previously developed simple environmentally friendly method of producing elemental tellurium nanoparticles Te 0 or Bi 2 Te 3 using commercially available powder bulk tellurium as a tellurizing agent at the stage of nanoparticle synthesis. Previously, we have successfully demonstrated the possibility of using commercial chalcogenide powders for the synthesis of elemental chalcogenide nanoparticles S 0 , Se 0 , Te 0 , as well as the nanoparticles of some chalcogenides (Ag 2 Se, Bi 2 Te 3 , ZnTe, SeS 2 ) stabilized by natural polymer matrices [20][21][22]. At the same time, the most available and environmentally friendly method for the synthesis of thermoelectric hybrid organic-inorganic nanocomposites PANI/nanophase (Te 0 or Bi 2 Te 3 ) themselves is mechanochemical activation of pre-produced and purified PANI and Te 0 and Bi 2 Te 3 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Mechanochemical Synthesis and DC Electrical Conductivity of PANI-Based MWCNT Containing Nanocomposites with Te0 and Bi2Te3 Thermoelectric Nanophase

Zhmurova

Прозорова

Zvereva

2023

Powders

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Nowadays, the search for the coupled polymer nanocomposite thermoelectrics that exhibit a high value of thermoelectric figure of merit (ZT) and similar behaviour of physical properties for the use as legs of thermoelectric cells is a current challenge. The direct current (DC) conductivity is one of the three important components of thermoelectric figure of merit. The aim of this study was to obtain PANI-based nanothermoelectrics with Te0 and Bi2Te3 nanoparticles and MWCNT by mechanochemical methodology and to investigate the dependency of their DC electrical conductivity on temperature in the 298–353 K range using the Arrhenius and Mott’s variable range hopping (VRH) models. Inorganic Te0 and Bi2Te3 nanoparticles were pre-synthesized by the available and environmentally friendly method using a commercial tellurium powder. The samples obtained were characterized by X-ray diffractometry (XRD), IR and UV-Vis spectroscopy. The XRD study of ES-PANI/Te0 (4.4 wt% Te0) and ES-PANI/Bi2Te3 (2.9 wt% Bi2Te3) nanocomposites found that the nanoparticle average size was 32 nm and 17 nm, respectively. The DC conductivity study of the samples with different nanophase content (2.1, 4.4, 10.2 wt% Te0, 1.5, 2.9, 7.3 wt% Bi2Te3, 1.5 wt% MWCNT) by the two points measurement method reveals the following: (a) the presence of inorganic nanophase reduces the conductivity compared to the matrix, (b) the addition of MWCNT in ES-PANI increases its electrical conductivity, (c) the conductivity of ES-PANI/Te0 as well as ES-PANI/Bi2Te3 nanocomposite rises with the increasing inorganic nanophase content, (d) the observed increase in the electrical conductivity of MWCNT-based nanocomposites with increasing inorganic nanophase content is interrupted by a characteristic area of decrease in its value at average values of inorganic nanoparticles content (at Te0 content of 4.4 wt%, at Bi2Te3 content of 2.9 wt%), (e) a similar DC conductivity behaviour in ES-PANI/Te0—ES-PANI/Bi2Te3 and ES-PANI/Te0-MWCNT—ES-PANI/Bi2Te3-MWCNT nanocomposite pairs is observed.

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Synthesis of Chalcogen-Containing Nanocomposites of Selenium and Tellurium with Arabinogalactan and a Study of Their Toxic and Antimicrobial Properties

Cited by 10 publications

References 13 publications

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)

The Use of Polysaccharide Matrices as a Basis for the Formation of Tellurium Nanoparticles with Different Morphologies

Mechanochemical Synthesis and DC Electrical Conductivity of PANI-Based MWCNT Containing Nanocomposites with Te0 and Bi2Te3 Thermoelectric Nanophase

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Synthesis of Chalcogen-Containing Nanocomposites of Selenium and Tellurium with Arabinogalactan and a Study of Their Toxic and Antimicrobial Properties

Cited by 10 publications

References 13 publications

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl2SnX3 (X = S, Se, Te)

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl2SnX3 (X = S, Se, Te)

The Use of Polysaccharide Matrices as a Basis for the Formation of Tellurium Nanoparticles with Different Morphologies

Mechanochemical Synthesis and DC Electrical Conductivity of PANI-Based MWCNT Containing Nanocomposites with Te0 and Bi2Te3 Thermoelectric Nanophase

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First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)

First‐Principles Calculations to Investigate the Ground State, Mechanical Stability, Electronic Structure, and Optical Properties of Tl₂SnX₃ (X = S, Se, Te)