1. ¼ ·Ð
1.1 Cyclic Voltammetry
1.1.1 Redox
ÀüÀÚ¸¦ ÀÒ´Â »êÈ(oxidation) ¹ÝÀÀ°ú ÀüÀÚ¸¦ ¾ò´Â (reduction) ȯ¿ø ¹ÝÀÀÀÌ µ¿½Ã¼º¿¡ ÀÇÇØ ¹ß»ýÇÏ´Â ¹ÝÀÀ.
1.1.2 Electrochemical cell
ÀϹÝÀûÀ¸·Î Cyclic Voltammetry¿¡¼´Â 3-electrode systemÀ» »ç¿ëÇÑ´Ù. Working electrode´Â interest¿¡ ´ê¾Æ¼ potentialÀ» Á÷Á¢ÀûÀ¸·Î Àü´ÞÇϱ⿡, ±× Ç¥¸é¿¡¼ electrolysis¿¡ ÀÇÇÑ redox°¡ ÀϾÙ. ÀÌ°÷Àº solution¿¡ Á÷Á¢ ´ê´Â ºÎÀ§¶ó¼ ¹ÝÀÀÀÇ ¿ÏÀü¼º¿¡ Å©°Ô °ü¿©ÇÒ ¼ö Àֱ⠶§¹®¿¡ solutionÀÌ ¹Ù²ð ¶§¸¶´Ù Áõ·ù¼ö¿Í ÇÔ²² alumina ÀÔÀÚ·Î polishingÇÏ¿© Ç¥¸éÀ» ÆíÆòÇÏ°Ô °¥¾ÆÁÖ´Â °ÍÀÌ ÁÁ´Ù. Reference electrode´Â potentialÀÇ ±âÁØÀ» Á¦°øÇϱâ À§ÇÑ Àü±ØÀ¸·Î, Ag/AgCl ȤÀº SCE¸¦ ¸¹ÀÌ »ç¿ëÇÑ´Ù. ¸¶Áö¸·À¸·Î auxiliary(¡ëcounter) electrode´Â º¸Á¶ Àü±ØÀ¸·Î, Àü·ù¸¦ °ø±ÞÇÏ¿© working electrode¿¡¼ electrolysis°¡ Áö¼ÓÀûÀ¸·Î ÀϾµµ·Ï º¸Á¶ÇÑ´Ù. ÀÌ Àü±ØÀº ¹ÝÀÀ¿¡ Àý´ë Âü¿©¿©¼´Â ¾È µÈ´Ù.
Fig.1. An electrochemical cell used to Cyclic Voltammetry
1.1.3 Cyclic Voltammetry
°¡Àå ´Ù¾çÇÑ ¿ëµµ·Î »ç¿ëÇÒ ¼ö ÀÖ´Â Àü±âºÐ¼® ±â¼ú Áß Çϳª·Î, electrodeÀÇ potent¡¦(»ý·«)
|
Daniel C. Harris, Quantitative Chemical Analysis(8th ed.), W.H. Freeman and Company, pp. 382-383(2010) Sawyer. D. T. Heineman, W. R. Beebe, J. M., Chemistry Experiments for Instrumental Methods, John Wiley & Sons, pp. 72-89(1984) D. T. Sawyer and J. L. Roberts, Jr. ¡°Experimental Electrochemistry for Chemists¡±, Wiley, New York, chap. 8.(1974) http://www.chemspider.com/FullSearch.aspx
|