Enhanced Electrochemical Oxidation of p-Nitrophenol Using Single-Walled Carbon Nanotubes/Silver Nanowires Hybrids Modified Electrodes

Abstract

The electrochemical oxidation of p-nitrophenol (p-Np) has been studied on glassy carbon electrode modified with the single-walled carbon nanotubes/silver nanowires hybrids (SWNTs-Ag) by using cyclic and differential pulse voltammetry. p-Np is irreversibly oxidized at +0.88 V (vs. the Ag/AgCl) in PBS solutions of pH 7.4. The modified electrodes display the detection sensitivity of 0.0212 µA/µM with an unusually wide linear response of 5-1700 µM (R2 = 0.998) and the detection limit of 1 µM. The current response of SWNTs-Ag modified electrode to p-Np is better than that of SWNTs or Ag nanowires modified electrode under the same concentration. Combining the adsorption ability of SWNTs and the conductivity of SWNTs and Ag nanowires, the detection performance of SWNTs-Ag modified electrode to p-Np was greatly improved.

Flexible Transparent Conductive Film Based on Random Networks of Silver Nanowires

“…In recent years, silver nanowires (AgNWs) utilized for fabricating flexible transparent conducting films (FTCFs) for flexible electronics and transparent heaters have attracted significant attention for their excellent mechanical, optical, thermal, and electrical properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. However, critical issues still exist that need to be addressed for the large scale application of AgNWs networks electrodes: (1) the low adhesion between AgNWs and the bare substrate; (2) the large contact resistance across the silver wire-wire junction [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. To further optimize the performance of AgNWs-based electrodes, scientists have made much progress at improving the performance of silver nanowires networks electrodes.…”