Measurement of ozone over a wide range of concentrations using semiconductor NiO gas sensors

Electrically Transduced Gas Sensors Based on Semiconducting Metal Oxide Nanowires

“…An In 2 O 3 -based O 3 sensor prepared by Epifani's group showed a low LoD of 60 ppb, approaching the regulated values [328]. Other SMO sensing materials for O 3 detection include In 2 O 3 , SnO 2 , NiO, WO 3 , Au/TiO 2 , Ga 2 O 3 , MnO 2 , CuAlO 2 [40,76,[329][330][331][332][333][334][335][336][337][338][339]. The delafossite-type oxide CuCrO 2 nanocrystals were considered as a promising material for O 3 sensing due to the exhibited reversible high-sensitive response at room temperature [339].…”

“…On the other hand, the sensing material is responsible for interacting with the target gases and transforming the chemical signals into electrical signals. Semiconducting metal oxides (SMO) such as stannic oxide (SnO 2 ) [29,30], zinc oxide (ZnO) [31,32], tungsten oxide (WO 3 ) [33,34], copper oxide (CuO) [35,36], indium oxide (In 2 O 3 ) [37,38], nickel oxide (NiO) [39,40] and titanium oxide (TiO 2 ) [41,42], are generally regarded one class of the most promising sensing materials for their chemical stability, simple processing, low cost, and high sensitivity performance.…”

MoS2–NiO nanocomposite for H2S sensing at room temperature

“…9 Among these SMOs, cubic NiO, having a band-gap of 3.5 eV, can be used to design novel nanocomposites with different metal oxides due to its marvelous properties, such as electrical, chemical, and thermal stabilities. NiO was found to be a promising candidate for detecting various gases, such as ozone, 10 acetone, 11 H 2 S, 12 NH 3 , 13 and formaldehyde. 14 However, the reported NiO gas sensors still need improvement due to some demerits, such as high temperature, low response, and poor selectivity.…”