High sensitivity and surface mechanism of MOFs-derived metal oxide Co3O4-SnO2 hollow spheres to ethanol

Hydrothermal Synthesis of SnO2 with Different Morphologies as Sensing Materials for HCHO Detection

“…TEM images (Figure d–f) immediately prove that the obtained SnO 2 nanoparticles manifest typical one-dimensional (1D) features with particles. The measured two crystal face spacing of the particles are 0.369 and 0.269 nm, which are attributed to the (110) and (101) crystal faces of the tetragonal rutile structure SnO 2 , respectively Figure S3 shows that the slope of the curve measured by the Mott–Schottky plot analysis is positive.…”

“…17 101) crystal faces of the tetragonal rutile structure SnO 2 , respectively. 23 Figure S3 shows that the slope of the curve measured by the Mott−Schottky plot analysis is positive.…”

“…More than 20,000 MOFs have been reported . MOFs can be tailored through various modifications to achieve higher internal surface area, enlarged pore sizes, and adjusted morphological structure. , Moreover, they not only are a type of porous crystalline material but also have a periodic network structure consisting of metal centers and organic ligands . Thus, MOFs are unique sacrificial templates for fabricating MOS sensors to enhance the gas sensor response and specific surface area.…”

Hydrothermal synthesis of a bimetallic metal–organic framework (MOF)-derived Co3O4/SnO2 composite as an effective material for ethanol detection

“…However, when exposed to an ethanol environment, the oxygen adsorbed on the surface of Co 3 O 4 reacts with ethanol molecules to produce CO 2 and H 2 O, allowing electrons to return to the conduction band of Co 3 O 4 . As the electron con- 38 Ultimately, this results in an increase in resistance. Due to the n-type semiconductor characteristics of the Co 3 O 4 /SnO 2 composite material, an electron-depleted layer akin to pure SnO 2 forms on the surface of the composite material.…”

Nb2O5 Microcolumns for Ethanol Sensing

“…By detecting the presence of ethanol in the air, these sensors can alert workers to impending dangers, safeguarding them from potential adverse effects such as irritations of the eyes, nose, and throat, as well as inducing headaches, dizziness, and even unconsciousness [ 12 ]. Consequently, ethanol gas sensing has emerged as a subject of utmost significance, garnering considerable attention in recent years, as evidenced by numerous scholarly works [ 13 , 14 , 15 , 16 , 17 , 18 ].…”