A study of step response of TiO2–Nb2O5 oxygen sensing composite

The measuring system of dynamic response is introduced. The relationship between the response time of TiO2–Nb2O5 complex oxide sensing material and ambient temperature and airflow change over frequency are also provided. With the non-noble metal catalyst, the response time of sintered complex oxygen sensing is approximate to 60 ms. The structure and mechanism have been inquired into.