Abstract
SnO2 with different Co2+ doping concentrations and Co (0.075 M): SnO2 loaded corn cob activated carbon (Co: SnO2/CCAC) were prepared, and are labelled as CS1, CS2, CS3 and CS2/CCAC, respectively. The CS2/CCAC showed that the particle size (18.76 nm) and band gap (3.50 eV) are reduced with Co2+ doping and CCAC loading. Moreover, CS2/CCAC indicate that the decreased PL intensity and its lower value (2.156 kΩ) of impedance from EIS results which indicates the increased separation of the photogenerated e−/h+ pairs. Thus, the result showed that CS2/CCAC maximum degradation efficiency of MB (95.38%) and the photocatalytic mechanism is also discussed.
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