Sensors for the nitrogen oxides, NO2, NO and N2O, based on In2O3 and WO3 nanowires

Enhanced NO2 gas sensing properties of WO3 nanorods encapsulated with ZnO

“…Table 2 [22][23][24][25][26][27][28][29] shows that the responses of the coreshell nanorods are comparable or superior to those of the other material sensors to NO 2 gas reported previously even though a somewhat higher NO 2 gas concentration range used in this study is taken into consideration. In particular, the response values obtained from the WO 3 -core/ZnO-shell nanorods in the present study was more than 5 times higher than those obtained previously from the SnO 2 -core/ZnOshell nanofibers at the same NO 2 concentration range [29].…”

Fabrication of NOx gas sensors using In2O3–ZnO composite films

“…Among the materials used, In 2 O 3 is known to be sensitive to some oxidizing gases, such as NO x [5][6][7][8]16] and ozone [9,10]. In order to improve the sensor sensitivity, nanostructured In 2 O 3 [11,12] or binary oxide films [13,14] have been used.…”

Inorganic Nanotubes and Nanowires

“…[454] Gas sensors for the three nitrogen oxides, NO 2 , NO and N 2 O have been fabricated using ZnO, In 2 O 3 and WO 3 nanowires. [455] In 2 O 3 nanowires of <20 nm diameter prepared by using porous AMs have a sensitivity of The studies reveal that the sensing mechanisms for the three nitrogen oxides have a commonality in that the desorption of oxygen is a crucial step in all cases. Ultrasensitive and highly selective gas sensors using 3D tungsten oxide nanowire networks have been reported.…”