Abstract
The multi-walled carbon nanotubes decorated with Co3O4 nanoparticles (Co3O4/MWCNTs) were successfully prepared by the hydrothermal method. A facile and practical electrochemical sensor based on Co3O4/MWCNTs was established for simultaneous detection of hydroquinone (HQ) and catechol (CC) by differential pulse voltammetry (DPV). The defined and separated oxidation peaks of a mixture of HQ and CC were obtained at pH 8.0, owing to the catalytic stability of Co3O4 in alkaline conditions as well as the high conductivity and excellent adsorption of MWCNTs. The proposed sensor exhibited the wide linear range from 10 to 800 μM (HQ) and 10–700 μM (CC), as well as the low detection limit of 5.6 μM (HQ) and 8.5 μM (CC). Meaningfully, in local seawater sample testing, the explored sensing platform achieved an excellent recovery for the simultaneous detection of CC (97.5–104.2%) and HQ (96.4–109.1%). According to the investigation, this is the first successful application of HQ and CC in direct seawater detection. This work demonstrated the Co3O4/MWCNTs nanocomposite was a promising material for electro-catalysis and electro-analyst in the marine environment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
