8 research outputs found

    ΠŸΠ΅Ρ€ΡΠΏΠ΅ΠΊΡ‚ΠΈΠ²Π° примСнСния Π±ΠΈΠΎΠ³Π΅Π½Π½Ρ‹Ρ… ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹Ρ… Ρ‚ΠΎΡ‡Π΅ΠΊ наночастиц ΡΡƒΠ»ΡŒΡ„ΠΈΠ΄ΠΎΠ² сСрСбра, кадмия ΠΈ Ρ†ΠΈΠ½ΠΊΠ° для создания ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… Π±ΠΈΠΎΠ½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚Π½Ρ‹Ρ… ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠ²

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    The possibility of applying silver, cadmium and zinc sulfide nanoparticles (npAg2S, npCdS and npZnS) obtained using Shewanella oneidensis MR-1 and Bacillus subtilis 168 bacterial cultures for the creation of a new class of polymeric bionanocomposite materials was investigated. Biogenic nanoparticles obtained in aqueous solutions of the corresponding salts in the presence of various types of microorganisms are characterized by the presence of protein molecules on their surface. The molecules composition is determined by the bacterial culture. Proteins stabilize them and allow the nanoparticles to covalently join the active groups of polymeric carriers. Aminated chloromethylated polystyrene microspheres, as well as ion-exchange resins of various types, were used as polymeric matrices. Analysis of interaction with them can be used as a method for studying the properties of biogenic nanoparticles of metal sulfides for subsequent successful selection of a polymeric carrier. The immobilization of biogenic nanoparticles of metal sulfides onto the surface of aminated chloromethylated polystyrene microspheres was found to depend on the level of stability of aqueous nanoparticle suspensions and is determined by the negative charge of biogenic npAg2S, npCdS and npZnS, which suggests covalent binding and the electrostatic interaction of the components in the composition of the polymer bionanocomposite. A comparative analysis of the parameters of nanoparticles depending on the strain used in the biosynthesis was carried out. Analysis of the main physicochemical characteristics of npCdS and npZnS showed that the small size of nanoparticles (npCdS - 5 nm, npZnS - up to 2 nm) and the presence of luminescence peaks at wavelengths less than 400 nm classify them in the blue region of the fluorescence spectrum and identify them as quantum dots. Thus, the possibility of introducing fluorescent quantum dots of nanoparticles of metal sulfides of biogenic origin into various polymeric matrices has been demonstrated, which contributes to the expansion of the horizons for using a new class of nanoparticles to create polymeric bionanocomposites.ИсслСдована Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ примСнСния наночастиц ΡΡƒΠ»ΡŒΡ„ΠΈΠ΄Π° сСрСбра, кадмия ΠΈ Ρ†ΠΈΠ½ΠΊΠ° (npAg2S, npCdS ΠΈ npZnS), ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… с использованиСм Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€ Shewanella oneidensis MR-1 ΠΈ Bacillus subtilis 168, для создания Π½ΠΎΠ²ΠΎΠ³ΠΎ класса ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… Π±ΠΈΠΎΠ½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚Π½Ρ‹Ρ… ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠ². Π‘ΠΈΠΎΠ³Π΅Π½Π½Ρ‹Π΅ наночастицы, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Π² Π²ΠΎΠ΄Π½Ρ‹Ρ… растворах ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… солСй Π² присутствии Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ‚ΠΈΠΏΠΎΠ² ΠΌΠΈΠΊΡ€ΠΎΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠΎΠ², Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΡŽΡ‚ΡΡ Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ΠΌ Π½Π° ΠΈΡ… повСрхности Π±Π΅Π»ΠΊΠΎΠ²Ρ‹Ρ… ΠΌΠΎΠ»Π΅ΠΊΡƒΠ», состав ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… опрСдСляСтся Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€ΠΎΠΉ. Π‘Π΅Π»ΠΊΠΈ ΡΡ‚Π°Π±ΠΈΠ»ΠΈΠ·ΠΈΡ€ΡƒΡŽΡ‚ наночастицы ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‚ ΠΈΠΌ ΠΊΠΎΠ²Π°Π»Π΅Π½Ρ‚Π½ΠΎ ΠΏΡ€ΠΈΡΠΎΠ΅Π΄ΠΈΠ½ΡΡ‚ΡŒΡΡ ΠΊ Π°ΠΊΡ‚ΠΈΠ²Π½Ρ‹ΠΌ Π³Ρ€ΡƒΠΏΠΏΠ°ΠΌ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… носитСлСй. Π’ качСствС ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… ΠΌΠ°Ρ‚Ρ€ΠΈΡ† использовали Π°ΠΌΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ Ρ…Π»ΠΎΡ€ΠΌ,Π΅Ρ‚ΠΈΠ»ΠΈΡ€ΠΎΠ²Π°Π½-Π½Ρ‹Π΅ ΠΏΠΎΠ»ΠΈΡΡ‚ΠΈΡ€ΠΎΠ»ΡŒΠ½Ρ‹Π΅ микросфСры, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΈΠΎΠ½ΠΎΠΎΠ±ΠΌΠ΅Π½Π½Ρ‹Π΅ смолы Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ‚ΠΈΠΏΠΎΠ². Анализ Π²Π·Π°ΠΈΠ»ΡŽΠ΄Π΅ΠΉΡΡ‚Π²ΠΈΡ с Π½ΠΈΠΌΠΈ Π»ΡŽΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использован Π² качСствС Π»ΡŠΠ΅Ρ‚ΠΎΠ΄Π° изучСния свойств Π±ΠΈΠΎΠ³Π΅Π½Π½Ρ‹Ρ… наночастиц ΡΡƒΠ»ΡŒΡ„ΠΈΠ΄ΠΎΠ² ΠΌΠ΅Ρ‚Π°Π»Π»ΠΎΠ² для ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅Π³ΠΎ ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎΠ³ΠΎ Π²Ρ‹Π±ΠΎΡ€Π° ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½ΠΎΠ³ΠΎ носитСля. УстановлСно, Ρ‡Ρ‚ΠΎ иммобилизация Π±ΠΈΠΎΠ³Π΅Π½Π½Ρ‹Ρ… наночастиц ΡΡƒΠ»ΡŒΡ„ΠΈΠ΄ΠΎΠ² ΠΌΠ΅Ρ‚Π°Π»Π»ΠΎΠ² Π½Π° повСрхности Π°ΠΌΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… Ρ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚ΠΈΠ»ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… ΠΏΠΎΠ»ΠΈΡΡ‚ΠΈΡ€ΠΎΠ»ΡŒΠ½Ρ‹Ρ… микросфСр зависит ΠΎΡ‚ уровня ΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ Π²ΠΎΠ΄Π½Ρ‹Ρ… суспСнзий наночастиц ΠΈ опрСдСляСтся ΠΎΡ‚Ρ€ΠΈΡ†Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌ зарядом Π±ΠΈΠΎΠ³Π΅Π½Π½Ρ‹Ρ… npAg2S, npCdS ΠΈ npZnS, Ρ‡Ρ‚ΠΎ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅Ρ‚ ΠΊΠΎΠ²Π°Π»Π΅Π½Ρ‚Π½ΠΎΠ΅ связываниС ΠΈ элСктростатичСскоС взаимодСйствиС ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² Π² составС ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½ΠΎΠ³ΠΎ Π±ΠΈΠΎΠ½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚Π°. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² наночастиц Π² зависимости ΠΎΡ‚ ΡˆΡ‚Π°ΠΌΠΌΠ°, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΠΎΠ³ΠΎ Π² биосинтСзС. Анализ основных Ρ„ΠΈΠ·ΠΈΠΊΠΎ-химичСских характСристик npCdS ΠΈ npZnS ΠΏΠΎΠΊΠ°Π·Π°Π», Ρ‡Ρ‚ΠΎ нСбольшиС Ρ€Π°Π·ΠΌΠ΅Ρ€Ρ‹ наночастиц (npCdS - 5 Π½ΠΌ, npZnS - Π΄ΠΎ 2 Π½ΠΌ) ΠΈ Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ‚Π½Ρ‹Ρ… ΠΏΠΈΠΊΠΎΠ² Π½Π° Π΄Π»ΠΈΠ½Π°Ρ… Π²ΠΎΠ»Π½ ΠΌΠ΅Π½Π΅Π΅ 400 Π½ΠΌ, Ρ‡Ρ‚ΠΎ относит ΠΈΡ… ΠΊ синСй области спСктра флуорСсцСнции, позволяСт ΠΊΠ»Π°ΡΡΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΈΡ… ΠΊΠ°ΠΊ ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹Π΅ Ρ‚ΠΎΡ‡ΠΊΠΈ. Π’Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ, Π±Ρ‹Π»Π° продСмонстрирована Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ ввСдСния флуорСсцСнтных ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹Ρ… Ρ‚ΠΎΡ‡Π΅ΠΊ наночастиц ΡΡƒΠ»ΡŒΡ„ΠΈΠ΄ΠΎΠ² ΠΌΠ΅Ρ‚Π°Π»Π»ΠΎΠ² Π±ΠΈΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ происхоТдСния Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Π΅ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Π΅ ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Ρ‹, Ρ‡Ρ‚ΠΎ способствуСт Ρ€Π°ΡΡˆΠΈΡ€Π΅Π½ΠΈΡŽ Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚ΠΎΠ² использования Π½ΠΎΠ²ΠΎΠ³ΠΎ класса наночастиц для создания ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… Π±ΠΈΠΎΠ½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚ΠΎΠ²

    Prospects of Applying Biogenic Quantum Dots of Silver, Cadmium and Zinc Sulfides Nanoparticles to Create Polymeric Bionanocomposite Materials

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    The possibility of applying silver, cadmium and zinc sulfide nanoparticles (npAg2S, npCdS and npZnS) obtained using Shewanella oneidensis MR-1 and Bacillus subtilis 168 bacterial cultures for the creation of a new class of polymeric bionanocomposite materials was investigated. Biogenic nanoparticles obtained in aqueous solutions of the corresponding salts in the presence of various types of microorganisms are characterized by the presence of protein molecules on their surface. The molecules composition is determined by the bacterial culture. Proteins stabilize them and allow the nanoparticles to covalently join the active groups of polymeric carriers. Aminated chloromethylated polystyrene microspheres, as well as ion-exchange resins of various types, were used as polymeric matrices. Analysis of interaction with them can be used as a method for studying the properties of biogenic nanoparticles of metal sulfides for subsequent successful selection of a polymeric carrier. The immobilization of biogenic nanoparticles of metal sulfides onto the surface of aminated chloromethylated polystyrene microspheres was found to depend on the level of stability of aqueous nanoparticle suspensions and is determined by the negative charge of biogenic npAg2S, npCdS and npZnS, which suggests covalent binding and the electrostatic interaction of the components in the composition of the polymer bionanocomposite. A comparative analysis of the parameters of nanoparticles depending on the strain used in the biosynthesis was carried out. Analysis of the main physicochemical characteristics of npCdS and npZnS showed that the small size of nanoparticles (npCdS - 5 nm, npZnS - up to 2 nm) and the presence of luminescence peaks at wavelengths less than 400 nm classify them in the blue region of the fluorescence spectrum and identify them as quantum dots. Thus, the possibility of introducing fluorescent quantum dots of nanoparticles of metal sulfides of biogenic origin into various polymeric matrices has been demonstrated, which contributes to the expansion of the horizons for using a new class of nanoparticles to create polymeric bionanocomposites
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