Fig. 5From: Electrochemical degradation of methylene blue accompanied with the reduction of CO2 by using carbon nanotubes grown on carbon fiber electrodesElectrochemical degradation efficiencies of MB with various anodic electrode materials in solution under an applied current of 50 mA, electrolyte of 0.1 M H2SO4, initial MB concentration of 10 mg L− 1, initial pH value of the solution of 1.83 and cathode of CNTs/CFM. ∆: CNTs/CFM; □: CFM; ○: CFBack to article page