Hydrothermal synthesis and gas sensing properties of variety low dimensional nanostructures of SnO2

Controlled synthesis of monodisperse WO3·H2O square nanoplates and their gas sensing properties

“…It is believed that chemical adsorption of the oxygen species on the surface is the main reason of the gas response the metal semiconductor oxides [43]. As the sensor is exposed to air, a mass of oxygen molecules will adsorb on the surface WO 3 ·H 2 O particle and trap its electrons in the conduction band and transform to O 2 -, O 2-, O -, etc.…”

Hydrothermal Synthesis of Pt-, Fe-, and Zn-dopedSnO2Nanospheres and Carbon Monoxide Sensing Properties

“…Pt-, Fe-, and Zn-doped SnO 2 nanospheres were prepared by a simple and facile hydrothermal synthesis route [14]. All the raw chemicals are analytical-grade reagents purchased from Beijing Chemicals Co. Ltd. and used as received without any further purification.…”

“…Due to the advantages of simple fabrication process, low maintenance cost, and long useful life, metal oxide semiconductors, such as SnO 2 [14], ZnO [15], In 2 O 3 [16], TiO 2 [17], WO 3 [18], and NiO [19], have been widely used for fabricating chemical gas sensors. Among these oxide sensors, SnO 2 , as an interesting chemically and thermally stable n-type semiconductor with wide band gap energy and large exciton binding energy, is regarded as one of the most promising sensing materials against CO gas, and the development of SnO 2 sensors for CO detection has been the focus of numerous research works in the world [20][21][22][23][24].…”

Synthesis, characterisation and sensing properties of Sm2O3doped SnO2nanorods to C2H2gas extracted from power transformer oil

“…Among them, semiconductor metal oxides have been regarded as good sensing materials for gas sensors because of their efficiency and practical applicability. [13][14][15][16][17][18] In particular, n-type tin oxide SnO 2 semiconductor is the predominant metal oxide sensing material, [19][20][21][22][23] which has been extensively researched for easy fabrication, fast gas response and low lost. However, high operating temperature, unsatisfactory selectivity and poor long term stability are still the major problems for traditional SnO 2 based gas sensors, which are needed to be further solved.…”