A new method for fabricating a CuO/TiO2 nanotube arrays electrode and its application as a sensitive nonenzymatic glucose sensor

► A novel CuO/TiO2 nanotube arrays electrode was fabricated by a new method. ► The sensor was used to detect glucose. ► The CuO/TiO2 electrode showed excellent stability and repeatability. ► The sensor was investigated detecting glucose in human blood serum samples.