Synthesis of SnO2–ZnO heterostructured nanofibers for enhanced ethanol gas-sensing performance

Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

“…As previously reported, ZnO is a n-type semiconductor with a band gap at around 3.37 eV, thus the charge is carried by the electrons. 21 Whereas ZnCo 2 O 4 is a typical p-type semiconductor oxide with band gap at about 2.6 eV, and for p-type semiconductors the free holes carry the charges. 2 From the previous information, it is concluded that the as-prepared ZnO/ZnCo 2 O 4 tube in tube nanostructure has an n-p heterostructure, and because the ZnO is the main component in the structure, the typical results of n-type semiconductor behavior are observed.…”

UV irradiation-assisted ethanol detection operated by the gas sensor based on ZnO nanowires/optical fiber hybrid structure

“…It can be seen from the above reactions that some of the chemisorbed oxygen ions in the form of O − and O 2− are removed for oxidizing ethanol, and release electrons back to the conduction band, leading to the increase of the conductivity [36].…”

Zinc Oxide Coated Tin Oxide Nanofibers for Improved Selective Acetone Sensing

“…Single metal oxide materials are unable to meet increasing requirements of material properties for a wide range of applications, especially for detection of gaseous species. Addition of the second component as a surface modifier alters electrical conductance of oxide films [ 15 , 16 ]. Composite materials, including both metal oxide and surface modifiers, have been proven an effective approach to improve physical and chemical characteristics of gas-sensing electrospun nanofibers.…”