Electrodes with Ni cyclam

Many applications of modified electrodes with [Ni (cyclam)] + or derivatives have been reported in the past years either on mercury or glassy carbon electrodes Modifications include cubic phases, Langmuir-blodget films,  

Nafion inclusion, supramolecular assemblies and adsorption in thin mercury filmsSeveral works have focused in the determination of SCN or electroeat-alytic reduction of aldehydes and ketones , but the most important goal is towards the determination of CO2 in aqueous or gas phase. 

In this section the electrocatalytic properties of the Ni(cyclam) + complex and its derivatives toward the electrochemical reduction of CO2 have been revised. This complex shows high selectivity and high electrocatalytic activity at Hg electrodes and in the last years the complex and supramolecular derivatives structures have been used as modified electrodes on the road to the design of sensor electrodes for CO2. These new applications are in direct proportion with the knowledge generated in the past two decades. Probably many new applications will be found for the Ni(cyclam) + family of complexes in the future, all of them closely related with the carbon dioxide reduction. 

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The conversion of CO2 to CO is a valuable commercial process. Reductive electrocatalysis of CO2 to CO can be performed on a mercury electrode with [Ni(cyclam)] + (cyclam = 1,4,8,11-tetraazacyclotetradecane) present as the electrocatalyst. Sauvage has shown that [Ni(cyclam)] +... 

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