다양한 pH 용액에서 네자리 Schiff base 착물이 수식된 유리질탄소 전극의 산소환원 촉매적 특성
The Catalytic Properties of Dioxygen Reduction on the Glassy Carbon Electrodes Modified with Tetradentate Schiff Base Complexes
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The electrocatalytic effect of oxygen reduction was investigated at glassy carbon electrodecoated with tetradentate Schiff base transition metal(II) complexes ; Co(II)(SOPD), Co(II)2(SMPD)2 andCo(II)2(SPPD)2 in the 1 M KOH solution. The reduction current of oxygen measured by cyclic voltammetrywas increased by about 150 % more than that of bare glassy carbon electrode and the reduction potentialwas shifted about 140 mV to the positive direction. The reduction current of oxygen was increased byraising scan rate and reduction potential was shifted to the negative potential direction. Theelectrocatalytic effect of oxygen reduction was investigated in various pH solutions by cyclic voltammetryat the glassy carbon electrode coated with tetradentate Schiff base transition metal(II) complexes. Thereduction current of oxygen at glassy carbon electrode coated with Co(II)(SOPD) was increased by about200 % more than that of bare glassy carbon electrode and the reduction potential was shifted about300~350 mV to the positive direction, compared to those of bare glassy carbon electrode in the pH 4, 7,and 10 solution. In the pH 10 solution, especially, the reduction current of oxygen at the electrode coatedwith Co(II)2(SMPD)2 complex was increased by about 200 % and peak potential was shifted about 500 mVto the positive direction .
Abstract
The electrocatalytic effect of oxygen reduction was investigated at glassy carbon electrodecoated with tetradentate Schiff base transition metal(II) complexes ; Co(II)(SOPD), Co(II)2(SMPD)2 andCo(II)2(SPPD)2 in the 1 M KOH solution. The reduction current of oxygen measured by cyclic voltammetrywas increased by about 150 % more than that of bare glassy carbon electrode and the reduction potentialwas shifted about 140 mV to the positive direction. The reduction current of oxygen was increased byraising scan rate and reduction potential was shifted to the negative potential direction. Theelectrocatalytic effect of oxygen reduction was investigated in various pH solutions by cyclic voltammetryat the glassy carbon electrode coated with tetradentate Schiff base transition metal(II) complexes. Thereduction current of oxygen at glassy carbon electrode coated with Co(II)(SOPD) was increased by about200 % more than that of bare glassy carbon electrode and the reduction potential was shifted about300~350 mV to the positive direction, compared to those of bare glassy carbon electrode in the pH 4, 7,and 10 solution. In the pH 10 solution, especially, the reduction current of oxygen at the electrode coatedwith Co(II)2(SMPD)2 complex was increased by about 200 % and peak potential was shifted about 500 mVto the positive direction .
참고문헌 (12)
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