TY - JOUR

T1 - Electrochemical transformations of polymers formed from nickel (II) complexes with salen-type ligands in aqueous alkaline electrolytes

AU - Kuznetsov, Nikita

AU - Yang, Peixia

AU - Gorislov, Georgy

AU - Zhukov, Yuri

AU - Bocharov, Vladimir

AU - Malev, Valery

AU - Levin, Oleg

PY - 2018/5/1

Y1 - 2018/5/1

N2 - The polymeric nickel complexes with salen-type ligands can serve as useful materials for a range of applications, including catalytic systems and energy storage devices. Despite the fact that electrochemical properties of such complexes were investigated in detail in non-aqueous solutions, there has still remained scarce information about their behavior in aqueous systems. This work is devoted to studying such properties of poly[Ni(salen)] films in aqueous alkaline electrolytes. By combination of electrochemical methods with X-ray photoelectron and Raman spectroscopy it was shown that the redox transformations observed result in ligand exchange and formation of nickel hydroxide thin films deposited on the working electrodes. The obtained material consists of uniformly distributed nanoparticles with the characteristic size of about 10 nm. Catalytic activity of the produced modified electrodes in reactions of ethanol and methanol oxidation, as well as their ability to be charged and discharged reversibly for more than 1000 cycles, makes them promising materials for applications in catalytic and energy storage devices.

AB - The polymeric nickel complexes with salen-type ligands can serve as useful materials for a range of applications, including catalytic systems and energy storage devices. Despite the fact that electrochemical properties of such complexes were investigated in detail in non-aqueous solutions, there has still remained scarce information about their behavior in aqueous systems. This work is devoted to studying such properties of poly[Ni(salen)] films in aqueous alkaline electrolytes. By combination of electrochemical methods with X-ray photoelectron and Raman spectroscopy it was shown that the redox transformations observed result in ligand exchange and formation of nickel hydroxide thin films deposited on the working electrodes. The obtained material consists of uniformly distributed nanoparticles with the characteristic size of about 10 nm. Catalytic activity of the produced modified electrodes in reactions of ethanol and methanol oxidation, as well as their ability to be charged and discharged reversibly for more than 1000 cycles, makes them promising materials for applications in catalytic and energy storage devices.

KW - Alcohols

KW - Electrocatalysis

KW - Electrooxidation

KW - Nickel hydroxide

KW - Salen-type complexes

KW - REDOX CATALYSIS

KW - TRANSITION-METAL-COMPLEXES

KW - GLASSY-CARBON ELECTRODE

KW - QUARTZ-CRYSTAL MICROBALANCE

KW - HYDROXIDE NANOPARTICLES

KW - ALIPHATIC-ALCOHOLS

KW - ELECTROCATALYTIC OXIDATION

KW - CATALYTIC REDUCTION

KW - RAY PHOTOELECTRON-SPECTROSCOPY

KW - SCHIFF-BASE COMPLEXES

UR - http://www.scopus.com/inward/record.url?scp=85044582923&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/electrochemical-transformations-polymers-formed-nickel-ii-complexes-salentype-ligands-aqueous-alkali

U2 - 10.1016/j.electacta.2018.03.042

DO - 10.1016/j.electacta.2018.03.042

M3 - Article

AN - SCOPUS:85044582923

VL - 271

SP - 190

EP - 202

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -