Biomass‐derived Nitrogen and Phosphorus Co‐doped Hierarchical Micro/mesoporous Carbon Materials for High‐performance Non‐enzymatic H2O2 Sensing. Issue 3 (11th December 2018) - Liu, Sen
Abstract: Nitrogen and phosphorus co‐doped hierarchical micro/mesoporous carbon (N, P‐MMC) was prepared by simple thermal treatment of freeze‐dried okra in the absence of any other additives. The 0.96 wt % of N and 1.47 wt % of P were simultaneously introduced into the graphitic framework of N, P‐MMC, which also possesses hierarchical porous structure with mesopores centered at 3.6 nm and micropores centered at 0.79 nm. Most importantly, N, P‐MMC carbon exhibits excellent catalytic activity for electrocatalytic reduction of H2 O2, resulting in a new strategy to construct non‐enzymatic H2 O2 sensor. The N, P‐MMC‐based H2 O2 sensor displays two linear detection range about 0.1 mM–10 mM ( R 2 =0.9993) and 20 mM–200 mM ( R 2 =0.9989), respectively. The detection limit is estimated to be 6.8 μM at a signal‐to‐noise ratio of 3. These findings provide insights into synthesizing functional heteroatoms doped porous carbon materials for biosensing applications. Abstract :