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The diffusion coefficient, Do, estimated from the slope of the Ip versus ¦Í1/2 plot, is 7.7 ¡Á 10-7 cm2 s-1. This value is similar to those reported with other promoters and electrodes [3¨C10]. The separation of anodic and cathodic peaks at a low scan rate (20 mV s -1) is about 68 mV, which is consistent with a quasi-reversible one-electron transfer reaction. A further increase in the scan rate resulted in a larger separation of peaks. For example, a separation of ca. 94 mV occurs at 100 mV s- 1.
Using Nicholson's method, the heterogeneous electron transfer rate constant ks of Cyt c at a PA/GCE was evaluated to be ca. 6.6 x 10 -3 cm s-1, which is about seven times the value reported in the literature [12]. Therefore all the above characteristics suggest that PA adsorbed on the electrode surface can act as an effective promoter for the redox reaction of Cyt c.

ÉÏÃæÊÇһƫÎÄÏ×ÖеÄÒ»²¿·Ö£¬ÇëÎÊһϠÕâ¸öÀ©É¢ÏµÊýDÒÔ¼° the heterogeneous electron transfer rate constant ks ÊÇÔõôÇó³öÀ´µÄ£¬»¹ÓÐ
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ÎļþÃû: heterogeneous electron transfer rate constant .pdf
ÃèÊö: heterogeneous electron transfer rate constant .pdf
ÏÂÔØÁ´½Ó: http://www.fs2you.com/files/75c0c4a6-0118-11dd-82cb-0014221f4662/


ÎļþÃû: D0.pdf
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ÏÂÔØÁ´½Ó: http://www.fs2you.com/files/75c203d7-0118-11dd-848c-0014221f4662/
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