3. RESULTS AND DISCUSSION
3.1 Cyclic Voltammetry
Figure 1 shows the cyclic voltammetry
result of pentlandite. On the anodic scan, two
oxidation current peaks (A1 and A2) can be
noted, on the cathodic scan, one prominent
cathodic current peak (C1) is present. The peak
A1 starts at about 0 mV and continues in a
wide potential range up to about 300 mV.
This peak is attributed to the following
electrochemical reaction:
(1)
where S0
could also be the metal deficient layer,
and this sulfur-like layer makes the pentlandite
hydrophobic [15, 16], whether the surface
product is element sulfur or metal deficient
layer, which is decided by the extent of
oxidation. When the mineral starts to be
oxidized, the metal ions dissolved from the
3. RESULTS AND DISCUSSION3.1 Cyclic VoltammetryFigure 1 shows the cyclic voltammetryresult of pentlandite. On the anodic scan, twooxidation current peaks (A1 and A2) can benoted, on the cathodic scan, one prominentcathodic current peak (C1) is present. The peakA1 starts at about 0 mV and continues in awide potential range up to about 300 mV.This peak is attributed to the followingelectrochemical reaction:(1)where S0 could also be the metal deficient layer,and this sulfur-like layer makes the pentlanditehydrophobic [15, 16], whether the surfaceproduct is element sulfur or metal deficientlayer, which is decided by the extent ofoxidation. When the mineral starts to beoxidized, the metal ions dissolved from the
การแปล กรุณารอสักครู่..
