APPLIED CATALYSIS B-ENVIRONMENTAL, cilt.188, ss.217-226, 2016 (SCI-Expanded)
tElectrocatalytic hydrogen evolution reaction (HER) on azido graphene oxide (GO-N3) and reduced azidographene oxide (RGO-N3) electrodes decorated with the cobaltphthalocyanine complex bearing ter-minal alkyne moieties (TA-CoPc) was investigated. GCE/RGO-N3electrode was constructed with theelectrochemical reduction of GO-N3coated on a glassy carbon electrode. Decoration of GCE/RGO-N3andGCE/GO-N3electrodes were performed with a new electrode modification technique, “click electrochem-istry (CEC)”, with which TA-CoPc complex was bonded to azido functional groups of GO-N3and RGO-N3on the electrodes. The modified GCE/RGO-N3/TA-CoPc and GCE/GO-N3/TA-CoPc electrodes were char-acterized with square wave voltammetry and electrochemical impedance spectroscopy (EIS), and thentested as heterogeneous electrocatalysts for HER. GCE/RGO-N3/TA-CoPc electrode illustrates well electro-catalytic activity by decreasing the over-potential of the bare electrode about 340 mV and increasing thecurrent density of the electrode about 15 fold at low pHs with absolutely high stability and reproducibility.