Electrochemical Detection of Phenol in Industrial Pollutant Absorbed Molecular Sieves by Electrochemically Activated Screen Printed Carbon Electrode

摘要

An electrochemically activated screen printed carbon electrode (EASPCE) was used for theelectrochemical detection of phenol in the industrial pollutant absorbed molecular sieves. GC-MSanalysis had identified 15 organic compounds and found that phenol was the most abundant oneamong these indentified organic compounds in the industrial pollutant absorbed molecular sieves. Inaddition, the phenol was also detected at modified electrodes by using the electrochemical methodssuch as cyclic voltammetry and differential pulse voltammetry. The surface morphology of the barescreen printed carbon electrode (SPCE) and EASPCE was investigated by scanning electronmicroscopy. The result of EASPCE showed a good oxidation peak response to phenol in the presenceof industrial pollutant absorbed molecular sieves, while the bare SPCE showed a very week responseto phenol compared with EASPCE. The electrochemical behaviours of phenol implied that theoxidation of phenol is one electron and one proton transferred electrochemical reaction.