Fast microwave-assisted synthesis of gas-sensing SnO2 quantum dots with high sensitivity

Facile synthesis of SnO2shell followed by microwave treatment for high environmental stability of Ag nanoparticles

“…It was previously found that a high temperature of about 250 C and even a low temperature of about 100 C applied in a hydrothermal method can recrystallize SnO 2 and cause the formation of highly ordered crystals characterized by a higher diameter. 34,35 Microwave irradiation is used to obtain or improve the crystal structure of different ceramic nanomaterials, such as changing amorphous TiO 2 to anatase at only 180 C. 36 The microwave treatment signicantly inuences the SnO 2 structure and has also been recently used as a method for the synthesis of different nanostructures such as dots, 37 nanoparticles, 38 wires, 39 or lms. 40 SnO 2 nanoparticles synthesized by the precipitation or combustion method indicate that the crystallite size increased with increasing annealing temperature.…”

Highlights on advances in SnO2 quantum dots: insights into synthesis strategies, modifications and applications

“…Some researchers have discovered that the SnO 2 QDs have gas sensoring performance [44,144,145]. Ma et al [44] have reported the ethanol sensing behavior by using the sensor based on the SnO 2 QDs with a small size of 2.5-4.1 nm.…”

Formaldehyde gas sensor with extremely high response employing cobalt-doped SnO2 ultrafine nanoparticles

“…The SnO 2 ultrafine nanoparticles are typical zero-dimensional materials and are commonly used in the study of gas sensors 8 , supercapacitors 9 and batteries 10 . Zhu et al 11 . synthesized SnO 2 quantum dots with a size of 2-4nm by using microwave assisted method, the sensor made by counterpart had a response value of 215 to 300 ppm ethanol, but did not show its selectivity.…”