Ethanol sensing properties of porous ZnO spheres via hydrothermal route

Optimization of Pd content in ZnO microstructures for high-performance gas detection

“…Metal oxide semiconductor nanomaterials are good candidates for gas sensing, due to their particular advantages over the traditional ones, such as high sensibility, fast response, low power consumption, and portability [2,3]. So far, a variety of metal oxide semiconductors (e.g., SnO 2 , CuO, In 2 O 3 , and ZnO [4][5][6][7]) have been used as resistive gas sensors, exploiting the changes in the electrical conductivity of these materials upon exposure to gaseous mixture [8].…”

Synthesis of novel RuO2/NaBi(MoO4)2 nanosheets composite and its gas sensing performances towards ethanol

“…The response of sensor based on RuO 2 /NaBi(MoO 4 ) 2 composite was higher than the sensors based on MoO 3 (38 for 500 ppm ethanol) [56] and hollow ZnO (18 for 100 ppm ethanol) [11], and close to the sensor based on ZnO porous flakes (24 for 100 ppm ethanol) [10].…”

“…It is well-known that the chemical component and the microstructure play key roles in the gas-sensing characteristics [8,9]. For so far, the gas sensing materials are mostly concentrated on single metal oxide such as ZnO, SnO 2 , TiO 2 , In 2 O 3 , WO 3 , MoO 3 (n-type) [10][11][12][13][14][15] and Co 3 O 4 , NiO (ptype) [16][17][18]. The disadvantage of sensors based on such single metal oxide is the relatively low selectivity to gases which have similar chemical characteristics.…”

A Compact Mach–Zehnder Interferometer Using Composite Plasmonic Waveguide for Ethanol Vapor Sensing

“…To make our device efficient, different types of P-ZnO layer templates could be used, such as, porous flakes composed ZnO spheres [28], P-ZnO nanosheets [29] and nanoplates [30]. All these types of P-ZnO layers composites of nanometer scaled pores exploit ultrahigh pore density with great enhancement of surface-to-volume ratio.…”