AgNPs doping the fold carbon nanoflower composite for highly sensitive electrochemical detection of hydrogen peroxide

The detection of hydrogen peroxide (H2O2) has considerable significance in industrial application and pathological monitoring. Inspired by the attributes of functional mesoporous carbons, a non-enzymatic sensor was constructed based on AgNPs doping carbon nanoflower composites (AgNPs/CNF). The characterization results showed that AgNPs/CNF with nanoflower structure greatly enhanced electron transfer rate and displayed outstanding catalytic performance for H2O2. Remarkably, the prepared sensor presented super low detection limit (5.83 x 10-11 M) and the wider detection range (1.75 x 10-10 - 5.41 x 10-3 M). In addition, the content of H2O2 in the actual disinfectant and human serum samples were further detected, and the recover ratios were 96.00 % - 104.0 % and 96.00-105.2 %, respectively, indicating the prepared sensor can detect H2O2 effectively.

Automated summary

A non-enzymatic sensor based on AgNPs/CNF materials was developed, showing excellent catalytic performance and ultra-low detection limit for H2O2 detection. The sensor demonstrated effective detection of H2O2 in actual disinfectant and human serum samples.