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Biomass‐derived Nitrogen and Phosphorus Co‐doped Hierarchical Micro/mesoporous Carbon Materials for High‐performance Non‐enzymatic H 2 O 2 Sensing
Author(s) -
Liu Sen,
Han Tianyi,
Wang Ziying,
Fei Teng,
Zhang Tong
Publication year - 2019
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800717
Subject(s) - mesoporous material , materials science , heteroatom , carbon fibers , phosphorus , detection limit , nitrogen , chemical engineering , catalysis , doping , analytical chemistry (journal) , nanotechnology , nuclear chemistry , chemistry , chromatography , organic chemistry , composite number , composite material , optoelectronics , ring (chemistry) , engineering , metallurgy
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 H 2 O 2 , resulting in a new strategy to construct non‐enzymatic H 2 O 2 sensor. The N,P‐MMC‐based H 2 O 2 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.