CNT-network modified Ni nanostructured arrays for high performance non-enzymatic glucose sensors

Ni nanostructured arrays (NAs) modified by entangled carbon nanotube (CNT) networks have been fabricated via a facile chemical vapor deposition (CVD) approach and applied as an electrode for non-enzymatic glucose sensors for the first time. Compared with previously reported Ni-contained biosensors, the electrode of CNT/Ni NAs possess higher performance for the detection of glucose, showing a low detection limit (1 mu M, S/N = 3), a wide linear range (0.5-10 mM) and quite high sensitivity (similar to 1381 mu A mM(-1) cm(-2)). In addition, other excellent properties of the CNT/Ni NAs electrode, such as good reproducibility, long-term stability and anti-interferences, are demonstrated as well. The good analytical capability, low cost and facile preparation method make CNT/Ni NAs promising for amperometric non-enzymatic glucose detection.