Research Article
Cyclic Voltammetric Investigations of Thiazine Dyes on Modified Electrodes
Table 2
Electrochemical data for cyclic voltammetry of dyes (5 × 10−5 M) at modified (ZSM-5) GCE in the presence of 0.1 M H2SO4.
| Dye | /s−1 | /V | /V | /V | / | |
| | 10 | 0.215 | 0.173 | 0.042 | 0.93 | 16.02 | | 20 | 0.218 | 0.172 | 0.046 | 1.05 | 12.71 | | 40 | 0.220 | 0.170 | 0.050 | 1.04 | 11.50 | Thionine | 60 | 0.222 | 0.170 | 0.052 | 1.03 | 11.00 | 100 | 0.225 | 0.168 | 0.057 | 0.94 | 11.01 | | 150 | 0.225 | 0.168 | 0.057 | 0.95 | 10.32 | | 200 | 0.229 | 0.165 | 0.064 | 0.93 | 10.02 | | 300 | 0.235 | 0.160 | 0.075 | 0.85 | 10.20 |
| | 10 | 0.070 | 0.030 | 0.040 | 1.00 | 45.03 | | 20 | 0.075 | 0.029 | 0.046 | 1.11 | 35.40 | | 40 | 0.075 | 0.029 | 0.046 | 1.21 | 28.71 | Azure C | 60 | 0.078 | 0.028 | 0.050 | 1.14 | 28.49 | 100 | 0.080 | 0.028 | 0.052 | 1.05 | 28.41 | | 150 | 0.082 | 0.026 | 0.056 | 1.02 | 27.70 | | 200 | 0.084 | 0.025 | 0.059 | 0.98 | 27.89 | | 300 | 0.085 | 0.024 | 0.061 | 0.93 | 27.30 |
| | 10 | 0.058 | 0.014 | 0.044 | 0.91 | 23.00 | | 20 | 0.060 | 0.015 | 0.045 | 1.00 | 17.72 | | 40 | 0.062 | 0.016 | 0.046 | 1.03 | 16.01 | Azure A | 60 | 0.065 | 0.016 | 0.049 | 0.97 | 15.49 | 100 | 0.066 | 0.012 | 0.054 | 0.92 | 15.80 | | 150 | 0.068 | 0.010 | 0.058 | 0.90 | 15.71 | | 200 | 0.070 | 0.008 | 0.062 | 0.87 | 15.79 | | 300 | 0.075 | 0.009 | 0.066 | 0.82 | 15.62 |
| | 10 | 0.060 | 0.030 | 0.030 | 0.57 | 52.50 | | 20 | 0.063 | 0.030 | 0.033 | 0.74 | 40.69 | | 40 | 0.068 | 0.030 | 0.038 | 0.88 | 32.50 | Azure B | 60 | 0.070 | 0.031 | 0.039 | 0.89 | 29.51 | 100 | 0.072 | 0.032 | 0.040 | 0.86 | 29.21 | | 150 | 0.076 | 0.030 | 0.046 | 0.86 | 28.40 | | 200 | 0.078 | 0.029 | 0.049 | 0.85 | 27.29 | | 300 | 0.082 | 0.026 | 0.056 | 0.81 | 27.30 |
| | 10 | 0.094 | 0.060 | 0.034 | 0.72 | 55.01 | | 20 | 0.095 | 0.060 | 0.035 | 0.91 | 42.50 | | 40 | 0.096 | 0.060 | 0.036 | 1.00 | 33.72 | Methylene blue | 60 | 0.098 | 0.058 | 0.040 | 0.96 | 31.59 | 100 | 0.100 | 0.055 | 0.045 | 0.95 | 30.80 | | 150 | 0.102 | 0.054 | 0.048 | 0.91 | 29.59 | | 200 | 0.105 | 0.050 | 0.055 | 0.90 | 29.60 | | 300 | 0.108 | 0.048 | 0.060 | 0.87 | 28.22 |
|
|