Architecture tailoring of MoO3 nanostructures for superior ethanol sensing performance

1D Metal Oxide Semiconductor Materials for Chemiresistive Gas Sensors: A Review

“…MOS is characterized as either n‐type or p‐type semiconductors. N‐type MOS is the most widely used sensing material for chemiresistive gas sensor [ 34 ] which includes WO 3 , [ 7,48,49 ] ZnO, [ 4,51–54 ] SnO 2 , [ 11,16,23 ] TiO 2 , [ 56,57 ] MoO 3 , [ 62,63 ] and In 2 O 3 [ 12,54,55 ] , etc. P‐type MOS such as, CuO is a good sensing material for H 2 S detection.…”

Advances in the designs and mechanisms of MoO3 nanostructures for gas sensors: a holistic review

“…Moreover, the gas sensors made of these 1-D nanostructures offer ultra-sensitivity, fast response, higher stability, low-temperature operations, and less power consumptions 101,102 . Till date, variety of 1-D nanostructures including nanobelts 60,72,73,96,99,[101][102][103][104][105] , nanoribbons 56,59,100,106,107 , nanorods 74,75,97,[108][109][110][111][112][113] , nanofibers 76,114 , nanowires 82 and microrods 98,115,116 of MoO3 have been utilized in gas sensors and the following section summarize about these nanostructures with their gas sensing performance and mechanism. An overview of gas sensors based on 1-D MoO3 nanostructures is listed in Table 1.…”

“…In line with this, Guo et al 76 have prepared SnO2 doped MoO3 NFbs (diameter~100 nm) by using a wet-chemical method for the detection of carbon monoxide (CO) gas by screen printing the NFbs on alumina substrates (Figure 7a). The response transients in Figure 7b In another work, the group of Mondal et al 114 had tailored highly crystalline and ultra-long MoO3 NFbs by applying temperature pulsing method during HT growth. The SEM image in Figure 7e demonstrated the presence of highly crystalline ultra-long nanofibers having several tens of micrometer of length and width in the range of 200-300 nm.…”

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

“…Besides, the rapid adsorption/desorption processes were confirmed to be the reason for prominent gas-sensing characteristics. By optimizing reaction time and pulse temperature in hydrothermal reaction, Mandal et al (2019) synthesized uniform MoO 3 nanobelts and MoO 3 nanofibers. The experimental results illustrated that the enhanced ethanol detection performances of nanofibers could be ascribed to the larger specific surface area and surface defects compared with the nanowires.…”