sebe mulumbwa - Academia.edu (original) (raw)
I am an automation engineering work in a in a power utility company under SAS/SCADA.I am.pasionate about automation, control and cyber-physical systems.Above all, am passionate about Jesus and humanity.
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The shape, size, optical properties and electrochemical activity of silver nanoparticles (AgNPs) ... more The shape, size, optical properties and electrochemical activity of silver nanoparticles (AgNPs) obtained by chemical reduction methods depending on the preparation conditions were investigated. Silver sols consist of AgNPs of different shapes. They are as follows spherical-30 nm, polyhedral-35 nm, 50 nm nanorods. It was shown that the position of the absorption spectrum peak in AgNPs depend on the molar ratio of mixture AgNO 3 :Na 3 C 6 H 5 O 7. The maximum of the absorption spectrum peak of AgNPs is shifted by 10 nm to longer wavelengths area in presence excess of a reducing agent or the increasing of boiling time. After storage for one week the spectrum intensity of AgNPs obtained in the mixture AgNO 3 :Na 3 C 6 H 5 O 7 = 1:1 is increased in comparison with freshly prepared AgNPs, which is caused by the increase of AgNPs quantity of a given size. The AgNPS obtained in the mixture AgNO 3 :Na 3 C 6 H 5 O 7 = 1:3 have the most electrochemical activity. The conditions that the AgNPs have the most electrochemical activity were found.
The world is slowly moving into increased human-robot interaction where both humans and robots ca... more The world is slowly moving into increased human-robot interaction where both humans and robots can co-exist in the same domain. For the robot to be able to operate effectively in a man’s designed e ...
The shape, size, optical properties and electrochemical activity of silver nanoparticles (AgNPs) ... more The shape, size, optical properties and electrochemical activity of silver nanoparticles (AgNPs) obtained by chemical reduction methods depending on the preparation conditions were investigated. Silver sols consist of AgNPs of different shapes. They are as follows spherical-30 nm, polyhedral-35 nm, 50 nm nanorods. It was shown that the position of the absorption spectrum peak in AgNPs depend on the molar ratio of mixture AgNO 3 :Na 3 C 6 H 5 O 7. The maximum of the absorption spectrum peak of AgNPs is shifted by 10 nm to longer wavelengths area in presence excess of a reducing agent or the increasing of boiling time. After storage for one week the spectrum intensity of AgNPs obtained in the mixture AgNO 3 :Na 3 C 6 H 5 O 7 = 1:1 is increased in comparison with freshly prepared AgNPs, which is caused by the increase of AgNPs quantity of a given size. The AgNPS obtained in the mixture AgNO 3 :Na 3 C 6 H 5 O 7 = 1:3 have the most electrochemical activity. The conditions that the AgNPs have the most electrochemical activity were found.
The world is slowly moving into increased human-robot interaction where both humans and robots ca... more The world is slowly moving into increased human-robot interaction where both humans and robots can co-exist in the same domain. For the robot to be able to operate effectively in a man’s designed e ...