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J. Korean Ceram. Soc. > Volume 44(6); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(6): 297.
doi: https://doi.org/10.4191/kcers.2007.44.6.297
서로 다른 다가이온을 함유한 음극선관 전면유리 용융체의 Square Wave Voltammetry
김기동, 김효광, 김영호
군산대학교 신소재나노화학공학부
Square Wave Voltammetry in Cathode Ray Tube Glass Melt Containing Different Polyvalent Ions
Ki-Dong Kim, Hyo-Kwang Kim, Young-Ho Kim
Faculty of Materials Science and Nano-chemical Engineering, Kunsan National University
With aids of square wave voltammetry (SWV) the redox behavior for various combination of polyvalent ions (Sb+Fe, Sb+Zn, Sb+Ce+Ti+Zn) was investigated in alkali-alkaline earth-silica CRT (Cathode Ray Tube) glass melts. The current-potential curve so called voltammogram was produced at temperature range of 1400 to $1000^{circ}C$ under the scanned potential between 0 and -800 mV at 100 Hz. In the case of the Sb+Fe and Sb+Zn doped melts, peak for $Sb^{3+}/Sb^0$ shown voltammogram was shifted to negative direction comparing to the only Sb doped melts. However, according to voltammogram of Sb+Ce+Ti+Zn doped melt, Ti and Ce except Zn had hardly any influence on the redox reaction of Sb. Based on the temperature dependence of the peak potential, standard enthalpy (${Delta}H^0$) and standard entropy (${Delta}S^0$) for the reduction of $Fe^{3+}$ to $Fe^{2+}$, $Sb^{3+}$ to $Sb^0$, $Zn^{2+}$ to $Zn^0$ and $Ti^{2+}$ to $Ti^0$ in each polyvalent ion combination of CRT glass melts were calculated.
Key words: Polyvalent ion, Redox reaction, Square Wave Voltammetry, Voltammogram
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