Abstract
A simple metal catalyzed solution method is used to prepare Ag nanodendrites on SiNW (silicon nanowire) arrays. The tip of
the SiNWs is homogeneously decorated with Ag nanodendrites and the morphology can be easily controlled by the
experimental conditions. The electrochemical performance of the Ag/SiNW array electrode is investigated. The response to
H2O2 is remarkably enhanced due to the synergistic effects of the Ag nanodendrites and SiNWs. In a buffer solution, the
sensor can detect H2O2 in a large linear range from 50 μM to 16.5 mM with high sensitivity (35.88 μA mM−1
cm−2
) and low
detection limit (2.8 μM) at a signal-to-noise ratio of 3. The sensor also exhibits long-term stability and good reproducibility.
The hierarchical nanocomposite electrode is attractive to integrated electrochemical sensors.
Keywords
Ag nanodendrites, Ag/SiNWs, Nonenzymatic sensor, Hydrogen peroxide.
Citation
BAIRUI TAO, RUI MIAO, HUI SHAO, FENGJUAN MIAO, Ag nanodendrites on silicon nanowire array for hydrogen peroxide sensing, Optoelectronics and Advanced Materials - Rapid Communications, 10, 11-12, November–December 2016, pp.945-949 (2016).
Submitted at: Oct. 11, 2014
Accepted at: Nov. 25, 2016