Based on notable catalytic capability of platinum(Pt)to nitrogen oxides(NO
x
)
a novel nitric oxide(NO)sensitive material is designed and synthesized
and its gas-sensitive characteristics are tested.The La
0.8
Sr
0.2
FeO
3
(LSF)modified by Pt nanoparticles(PtNPs)metal oxide semiconductor NO sensor is prepared through the impregnation method.The research result shows that
at the optimum operating temperature of 200℃
the sensor modified by 1% vol PtNPs exhibits outstanding gas sensing properties
a
chieving a sensitivity of 160.5/10
-6
the performance is nearly doubled compared to the unmodified sample.During long term stability tests
response fluctuations of the sensor is not more than 5%.Additionally
the sensor exhibits excellent selectivity and consistency.These results show that catalytic role of PtNPs is the primary factor enhancing the gas sensitive characteristics.