Detection of phenol at boron-doped nanocrystalline diamond electrodes

► The variation of a deposition parameter influenced on the diamond films growth. ► We analyze two types of boron-doped diamond electrodes (BDND). ► The electrode grown with spinning substrate-holder presented good electrochemical properties. ► This electrode reached a good phenol detection limit of around 0.1 mg L−1. ► Our results were validated with the Ion Chromatography assay, showing the availability of BDND electrode as a nanosensor.