Electrochemical behaviors of composite electrode of TiO2 nanotube arrays and carbon nanoparticles

A novel composite electrode composed of ordered TiO
₂
nanotube arrays and carbon nanoparticles was fabricated by thermal chemical reaction of butanone and anodized TiO
₂
nanotube arrays on Ti sheet. This composite electrode exhibits favorable voltammetric responses to K
₃
Fe(CN)
₆
and dopamine. The linear responsive range of dopamine is 1.0×10
^-6
to 1.0×10
^-4
M and the detection limit of dopamine is 8.0×10
^-8
M (S/N=3).