A new electrochemical sensor based on W-doped titania-CNTs composite for detection of pentachlorophenol

摘要

W-dopedtitania-carbon nanotubes composites have been prepared by a modified sol-gelmethod and characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction spectroscopy. Basedon theseW-doped TiO2-CNTs composites, a new electrochemical sensor has beendeveloped for determination of pentachlorophenol, which shows good analyticalperformance with the linear response range from 0.4-3.0 μM, detection limit of 0.011 μM,high sensitivity and good stability.