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15 lip 2018 · Sensor Response of Ni: Fe 2 O 3, Fe 2 O 3, Mg:Fe 2 O 3 thin films grown by using Spray Pyrolysis (SP) technique towards H 2 (also we can use different gas such as CO,HS 2) target gases for different concentrations (100 ppm, 500 ppm, 1000 ppm) at 200 °C temperature.
19 gru 2015 · Metal oxide/α-Fe 2 O 3 nanocomposite gas sensors are principally compounds of α-Fe 2 O 3 with other n-types metal oxides such as ZnO, SnO 2 and In 2 O 3 that show high sensivity to different gases, high selectivity and high stability, so they are promising materials for industrial gas sensors.
30 gru 2014 · Combined synthesis experiments and first-principles calculations show that MgSiO 3 -perovskite with minor Al or Fe does not incorporate significant OH under lower mantle conditions.
30 kwi 2001 · Gas sensors based on α-Fe 2 O 3 (Al) have been studied experimentally and theoretically. Those with 9 mol% Al-added, sintered at 850°C, exhibit good gas sensing responses to CO and CH 4. Well formed polycrystalline particles, essential to good gas sensing properties, are observed. XRD data show that the Al is dissolved into the material.
8 gru 2022 · The gas sensing industry is dominated by metal oxide semiconductors (MOS) to fulfill the requirement of ideal gas sensors. MOS-based gas sensors have many applications such as environmental monitoring, fire detection, detection of harmful gases in mines, home safety, traffic safety, and healthcare, as shown in Figure 1. 3, 7, 8
The Fe-BTC-based capacitive/impedimetric sensor registered the best sensing performance and featured an approximately linear sensitivity of 590 MΩ vol% −1 (normalized impedimetric sensor signal by the humidity level) toward humidity in the range of 0–2.5 vol% at 1 Hz and 120 °C.
In this review, the latest advance of MOF-based gas sensors relying on different transduction mechanisms, for example, chemiresistive, capacitive/impedimetric, field-effect transistor or Kelvin probe-based, mass-sensitive, and optical ones are comprehensively summarized.
