10 research outputs found
Characterization of copper nanoparticles synthesized by a novel microbiological method
Laser ablation in liquids under the conditions of external electric field
ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠΉ Π»Π°Π·Π΅ΡΠ½ΠΎΠΉ Π°Π±Π»ΡΡΠΈΠΈ Π² ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΡ Π·ΠΎΠ»ΠΎΡΠ° Π² ΡΡΠ΅Π΄Π°Ρ
Π΄ΠΈΡΡΠΈΠ»Π»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ Π²ΠΎΠ΄Ρ ΠΈ 96% ΡΡΠΈΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΡΠΏΠΈΡΡΠ°. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΎΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΡ Π²Π½Π΅ΡΠ½Π΅Π³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π² Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ Π½Π°ΠΏΡΡΠΆΠ΅Π½ΠΈΠΉ ΠΎΡ 1 Π΄ΠΎ 7 ΠΊΠ Π½Π° ΠΏΡΠΎΡΠ΅ΡΡΡ Π»Π°Π·Π΅ΡΠ½ΠΎΠΉ Π°Π±Π»ΡΡΠΈΠΈ. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΠΈ. Π ΡΠ»ΡΡΠ°Π΅ ΡΠΈΠ½ΡΠ΅Π·Π° Π·ΠΎΠ»ΠΎΡΡΡ
Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Π² ΡΡΠ΅Π΄Π΅ Π΄ΠΈΡΡΠΈΠ»Π»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ Π²ΠΎΠ΄Ρ Π² ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΏΠ΅ΠΊΡΡΠ°Ρ
ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ ΡΠ°ΡΡΠΈΡ ΠΏΠΎ ΠΌΠ΅ΡΠ΅ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π½Π°ΠΏΡΡΠΆΡΠ½Π½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΎΡΡ ΠΏΠ°Π΄Π΅Π½ΠΈΠ΅ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ. Π‘ΠΏΠ΅ΠΊΡΡΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π΄Π»Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ, ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π² ΡΡΠ΅Π΄Π΅ ΡΡΠ°Π½ΠΎΠ»Π°, Π½Π°ΠΏΡΠΎΡΠΈΠ², Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ ΠΈ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠΈΡΠΈΠ½Ρ ΠΏΠΎΠ»ΠΎΡΡ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ Π½Π°ΠΏΡΡΠΆΡΠ½Π½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ.
Gold nanoparticles in distilled water and 96% ethanol by pulsed laser ablation in a liquid were obtained. The influence of the external electric field in the voltage range from 1 to 7 kV on laser ablation processes was investigated. Obtained nanoparticles were characterized by optical spectrophotometry. In the case of the synthesis of gold nanoparticles in a medium of distilled water in the optical absorption spectra of particles with an increase in the electric field strength, a decrease in the optical density was observed. The spectra obtained for nanoparticles synthesized in ethanol, on the contrary, are characterized by an increase in optical density and a decrease in the width of the absorption band with an increase in the electric field strength
The synthesis of metallic nanoparticles by laser ablation in heavy water method
Π ΡΠ°Π±ΠΎΡΠ΅ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½ ΡΠΈΠ½ΡΠ΅Π· Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Π·ΠΎΠ»ΠΎΡΠ° ΠΈ ΡΠΈΡΠ°Π½Π° ΠΌΠ°ΡΠΊΠΈ ΠΠ’4-0 ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π»Π°Π·Π΅ΡΠ½ΠΎΠΉ Π°Π±Π»ΡΡΠΈΠΈ Π² D2O ΠΈ Π2O, ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΡ ΠΈΠ·Π»ΡΡΠ΅Π½ΠΈΠ΅ Nd:YAG Π»Π°Π·Π΅ΡΠ° Ρ Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ Ξ» = 1064 Π½ΠΌ. ΠΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΈ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠ°ΡΡΠΈΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π² ΡΡΠΆΡΠ»ΠΎΠΉ ΠΈ Π»ΡΠ³ΠΊΠΎΠΉ Π²ΠΎΠ΄Π΅. Π ΡΠ»ΡΡΠ°Π΅ D2O Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΎΡΡ ΠΌΠ΅Π½ΡΡΠ°Ρ Π°Π³ΡΠ΅Π³Π°ΡΠΈΡ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π2O. In this work the synthesis of gold and titanium (OT4-0) nanoparticles by laser ablation in D2O and H2O was considered. The radiation of Nd:YAG laser with a wavelength Ξ» = 1064 was used. The optical properties and morphology of particles, obtained in heavy and light water were compared. It was observed that in the case of using D2O the aggregation of nanoparticles occurred at a lower level in compare with H2O