scholarly journals Cyclic Voltammetric Studies of Biologically Active Azomethine 2’-Hydroxyacetophenone Sulfamethoxazole

2019 ◽  
Vol 35 (3) ◽  
pp. 1117-1124
Author(s):  
Gopal Lal Kumawat ◽  
Preeti Choudhary ◽  
Anil Kumar Varshney ◽  
Sarita Varshney
Keyword(s):  
Biologically Active ◽  
Cyclic Voltammograms ◽  
Cyclic Voltammetric ◽  
Azomethine Group ◽  
Diffusion Controlled ◽  
Voltammetric Behavior ◽  
Voltammetric Studies ◽  
Bacteria And Fungi ◽  
Ph Range ◽  
Cyclic Voltammetric Studies

The cyclic voltammetric behavior of newly synthesized biologically active azomethine 2’-hydroxyacetophenone sulfamethoxazole (2’-HyAcPhSM) was examined at glassy carbon electrode in acetonitrile, acetone, methanol and DMF solvents using phosphate buffer and Britton-Robinson (BR) buffer. The effect of solvents, buffers, sweep rates and pH were calculated on peak potential and peak current. The cyclic voltammograms of 2’-HyAcPhSM exhibited two electronic, irreversible and diffusion-controlled single cathodic peak within the entire pH range which is attributed to the reduction of the azomethine group (‒CH=N‒) to amine group (‒CH2‒NH‒). The biological activity of synthesized 2’-HyAcPhSM compound were carried out against various bacteria and fungi.

A Novel Non-Metal Oxygen Reduction Electrocatalyst Based on Platelet Carbon Nanofiber

2010 ◽  
Vol 132 ◽  
pp. 264-270
Author(s):  
Jun Sheng Zheng ◽  
Xin Sheng Zhang ◽  
Sun Wen ◽  
Ping Li ◽  
Chun An Ma ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Carbon Nanofiber ◽  
Reduction Reaction ◽  
Cyclic Voltammetric ◽  
Spectra Analysis ◽  
Transmission Electron ◽  
Diffusion Controlled ◽  
Reduction Current ◽  
Voltammetric Studies ◽  
Cyclic Voltammetric Studies

A novel non-metal electrocatalyst based on platelet carbon nanofiber (p-CNF) is prepared, and a palladium electrocatalyst supported on activated carbon (AC) is also synthesized. The physico-chemistry properties of the p-CNF and palladium catalyst on AC (Pd/AC) are investigated by high resolution transmission electron microscopy, N2 physisorption and Raman spectra analysis. From cyclic voltammetric studies, it is found that p-CNF is more active than Pd/AC in acidic media. The p-CNF shows a more positive oxygen reduction reaction (ORR) onset reduction potential and a higher oxygen reduction current density than Pd/AC. Moreover, the ORR is controlled by a surface reaction process when Pd/AC is used, while it becomes diffusion controlled when p-CNF is used.

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