Synthesis of SnO₂ nanoparticles for formaldehyde detection with high sensitivity and good selectivity

Abstract

Abstract

Dealuminated Zeolite Y/SnO2 Nanoparticle Hybrid Sensors for Detecting Trace Levels of Propanol as a Lung Cancer Biomarker

“…Thus, a low amount of paraformaldehyde is accessible to react with the oxygen ions on the surface of SnO 2 NPs at operating temperatures in the range of 175–275 °C, which leads to a relatively low response for formaldehyde. On the other hand, the relative response of the SnO 2 NP sensor decreased from 25.4 ± 2.3% at 175 °C to 6.8 ± 1.7% at 300 °C due to the high desorption rate of formaldehyde on the SnO 2 NP surface . For 200 ppb toluene, a low relative response of the DaY/SnO 2 NP sensor (8.0 ± 0.6%) was recorded at 175 °C.…”

“…On the other hand, the relative response of the SnO 2 NP sensor decreased from 25.4 ± 2.3% at 175 °C to 6.8 ± 1.7% at 300 °C due to the high desorption rate of formaldehyde on the SnO 2 NP surface. 42 For 200 ppb toluene, a low relative response of the DaY/SnO 2 NP sensor (8.0 ± 0.6%) was recorded at 175 °C. The operating temperature had little to no effect on the sensitivity, with a relative response of 16.3 ± 0.9% recorded at 250 °C.…”

Size-controlled synthesis of porous ZnSnO3 nanocubes for improving formaldehyde gas sensitivity

“…At a higher temperature, the oxygen adsorption rate is weaker than the desorption rate, and the adsorbed oxygen molecules are desorbed, so the sensitivity decreases with the increase of temperature. 47 The porous ZnSnO 3 nanocube sensor had a high response (21.2) to 50 ppm formaldehyde at 210 °C, and the adsorption–desorption rate reaches equilibrium. Thus, the operating temperature of 210 °C was selected as the optimum operating temperature for subsequent testing.…”

Rational Design of SnO2 Hollow Microspheres Functionalized with Derivatives of Pt Loaded MOFs for Superior Formaldehyde Detection

“…As shown in Figure 8 c, the results show that the attenuation rates of the response and resistance are 11% and 24%, respectively, indicating that the sensor based on S4 is of great significance to realize the accurate detection of formaldehyde gas. Importantly, the comparisons of response and limit of detection between the S4 sensor and other reported SnO 2 -based formaldehyde sensors are displayed in Table 1 [ 9 , 12 , 13 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Mostly, the sensor fabricated in this work has outstanding advantages in terms of response and limit of detection.…”