Synthesis of Ce-doped SnO 2 nanoparticles and their acetone gas sensing properties

Recent Advances of SnO2-Based Sensors for Detecting Volatile Organic Compounds

“…When finally restored to the air environment, the sensor returns to its original state (Lu et al, 2018b;Al-Hashem et al, 2019;Mahajan and Jagtap, 2019). The sensing mechanism of the SnO 2 sensor reacting with these gases can be represented by the following path, where O − is taken as an example (Lian et al, 2017;Zhu et al, 2019):…”

“…The doping of Ce ions into the SnO 2 lattice results in the smaller size of nanoparticles and the formation of a porous structure. Therefore, Ce ions can provide more active sites for the adsorption and reaction of acetone (Lian et al, 2017).…”

“…Long term exposure to acetone can stimulate human sensory organs and lead to inflammation. Therefore, the quantitative detection of acetone is of great significance (Cheng et al, 2015;Lian et al, 2017). PdAu decorated SnO 2 nanosheets sensor was able to detect acetone at 45 ppb and to respond to acetone at 50 ppm to 109 (Li G. et al, 2019).…”

Fast and selective detection of volatile organic compounds using a novel pseudo spin-ladder compound CaCu2O3

“…A higher acetone concentration ranging from 1.7 ppm to 3.7 ppm could be detected in breath for those who are diabetic, while the breath of healthy humans typically contains less than 0.8 ppm. 5 Thus, gas sensors with sub-ppm acetone detection capacity play an important role in the development of non-invasive monitoring methods or in early diagnosis of potential diabetic patients. 6 The demand for breath ethanol detection is also very high.…”

Acetone Sensing Properties and Mechanism of SnO2 Thick-Films

“…Among the semiconductor metal oxides used in gas sensors, SnO 2 has received considerable attention in science and technology for many years. SnO 2 with a wide band gap of 3.6 eV is a significant functional material applicable for solar cells, catalysis, transparent electrodes, and, particularly, in gas sensor devices because of its unique optical, catalytic, and electrical properties [ 1 , 2 , 3 , 4 , 5 , 6 ]. It has been widely used to detect toxic chemicals such as CH 4 , H 2 , C 2 H 5 OH, gasoline, CO, C 2 H 2 , NO 2 , NO, and H 2 S [ 7 ].…”