title: Ð¡Ð¸Ð½ÑÐµÐ· Ð¸ ÑÑÐ°Ð±Ð¸Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð±Ð¸Ð¼ÐµÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ñ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ Ð²Ð¸ÑÐ¼ÑÑ-ÑÐµÑÐµÐ±ÑÐ¾
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Synthesis and stabilization of bimetallic nanoparticles bizmuth-silver
Creators: name: ÐÑÐ¾ÑÐ²Ð¸ÑÐ½Ð¸Ð½Ð°, ÐÐ½Ð³ÐµÐ»Ð¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð±Ð¸Ð¼ÐµÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸ÑÑ
Ð¿Ð¾Ð»Ð¸Ð¼ÐµÑÑ
ÑÑÐ°Ð±Ð¸Ð»Ð¸Ð·Ð°ÑÐ¸Ñ
ÑÐ¿ÐµÐºÑÑÐ¾ÑÐ¾ÑÐ¾Ð¼ÐµÑÑÐ¸Ñ
Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ ÑÐ²ÐµÑÐ¾ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
ÑÐµÑÐµÐ±ÑÐ¾
Ð²Ð¸ÑÐ¼ÑÑ
bimetallic nanoparticles
polymers
stabilization
spectroscopy
dynamic light scattering
silver
bismuth

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description: The subject of the graduate qualification work is âSynthesis and stabilization of bimetallic nanoparticles bismuth-silverâ In this work, silver and bismuth nanoparticles and their bimetallic nanoparticles (BNPs) were synthesized and stabilized by chemical reduction from precursors using sodium borohydride as a reducing agent. Polymers of various nature were used as stabilizers: sodium citrate, polyethylene glycol, polyvinylpyrrolidone and a mixture of polyvinylpyrrolidone with cyclodextrin. It was shown that bismuth nanoparticles are not stabilized by sodium citrate and polyethylene glycol, the use of polyvinylpyrrolidone and a mixture of polyvinylpyrrolidone with Î²-cyclodextrin showed an improvement in stability with an increase in the molecular weight of the stabilizer and a decrease in the metal concentration.The use of stabilizers in the case of silver nanoparticles gave a good result. Solutions are stable for a long time. It was established that the nature of the stabilizer influenced the spectral and dimensional characteristics of silver nanoparticles. It was shown that sodium citrate and polyethylene glycol do not stabilize the BNPs, regardless of the synthesis method. It has been found that polyvinylpyrrolidone stabilizes BNPs, and administration of Î²-cyclodextrin changes the principle of stabilization. The spectral and dimensional characteristics of stabilized BNPs were studied. It has been shown that the choice of a stabilizer, a synthesis method, and a concentration ratio of silver and bismuth nanoparticles allows one to obtain low-frequency nanoparticles with different spectral and dimensional characteristics. Also was shown the effect of the molecular weight of polyvinylpyrrolidone on the spectral and dimensional characteristics of the BNPs. It was established that the application of various stabilizers leads to stabilization of BNPs synthesized in different ways, which may indirectly indicate their different structure.