Highly Sensitive and Selective Zinc-Based Metal-Organic Framework Derivatives Gas Sensors for Trace H₂S Detection.

ABSTRACT: High sensitivity and selectivity are never-ending points of interest in the gas sensing field. Herein, the novel functionalized N-doped graphitic carbon is derived from Zn-MOF by modulating the pyrolysis temperature toward H₂S sensing application. The results demonstrate excellent sensing performance toward H₂S gas with a limit of detection (LOD) of 56.9 ppb, faster response and recovery time (18 and 29 s), and high selectivity with a 20-fold response difference than other interfering gases. The expected stability with stable multiple consecutive responses and a strong response toward 1 ppm of H₂S after 4 months were reached. Functionalized groups pyridinic nitrogen (PD-N) and pyrrolic nitrogen (PR-N) that make MOF-derived carbon stand out in H₂S

SUBMITTER: Wang W 

PROVIDER: S-EPMC12560126 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature