Solvent-free infiltration method to prepare mesoporous SnO2 templated by SiO2 nanoparticles for ethanol sensing

A facile nanocasting synthesis of mesoporous Ag-doped SnO 2 nanostructures with enhanced humidity sensing performance

“…S. Liu et al prepared ordered mesoporous SnO 2 templated by silica nanoparticles for ethanol sensing. They have observed high sensitivity (3 fold higher) and faster response/recovery time for ethanol gas when compared to bulk SnO 2 [29]. Li et al reported the fabrication of mesoporous SnO 2 using carbon nanotubes (CNT) as template for detecting indoor pollutants.…”

“…Notably, the regular porosity and large specific surface area of ordered mesoporous SnO 2 materials would permit high accessibility for the gas molecules and provide more active sites for the surfacechemical interaction between the gas analyte and SnO 2 materials. Moreover, the nanoscale ordering of their pore walls influences the carrier analytes to large extent during surfacechemical interaction, resulting in a high sensing response [12,13,17,[26][27][28][29]. To the best of our knowledge, however, the use of mesoporous SnO 2 nanocasted using SBA-15 as RH sensing material has never been addressed so far.…”

Realization of Visible Light Photocatalysis by Wide Band Gap Pure SnO2 and Study of In2O3 Sensitization Porous SnO2 Photolysis Catalyst

“…The average crystallite size of In 2 O 3 /SnO 2 –m ( m=0 wt%, 0.1 wt%, 0.5 wt%, 1.0 wt%, 1.5 wt% and 2.0 wt%) samples were respectively 62.4, 61.3, 55.8, 53.1, 50.2 and 64.9 nm, which were calculated using the Scherrer's equation based on the diffraction peak of (110). Scherrer's equation is as follows: D=0.89λ/βcosθ, where D is the average diameter of the crystallite, λ (Cu Kα)=0.15418 nm and β is the full‐width at half‐maximum of the diffraction lines …”

Palladium‐Loaded Hierarchical Flower‐like Tin Dioxide Structure as Chemosensor Exhibiting High Ethanol Response in Humid Conditions

“…Tin dioxide (SnO 2 ), an n‐type metal‐oxide semiconductor, is an important material in many applications, including gas sensors, due to its excellent properties, such as high sensitivity and good stability . SnO 2 has been used for the detection of several toxic, pollutant, and flammable gases, such as NO 2 , H 2 , NH 3 , and volatile organic compounds (VOCs) . The monitoring of VOCs is of particular interest because they are related to environmental and indoor air pollution and can act as biomarkers for the diagnosis of diseases .…”