Synthesis of Hollow ZnSnO₃ Nanospheres with High Ethanol Sensing Properties

Abstract

Hollow ZnSnO3 nanospheres were synthesized by a hydrothermal method using ZnO nanospheres as the hard template and raw material simultaneously. The combined characterizations of X-ray diffraction (XRD), scanning electron microscope (SEM) and high-resolution transmission electron microscopy (HRTEM) confirmed the successful preparation of hollow ZnSnO3 nanospheres. The gas-sensing results indicated that the sensor made from hollow ZnSnO3 nanospheres exhibited high sensitivity, good selectivity, and stability to ethanol at a low operating temperature of 200°C. The sensitivity was about 32 and the response and recovery time were about 4 s and 30 s for 100 ppm ethanol, respectively. The enhancement in gas-sensing properties was attributed to the hollow nanostructures and high specific surface areas of ZnSnO3.

Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds

“…Recently, ternary oxide-based ethanol sensors have been investigated by many researchers [85,109,118,123,124,125,126]. Zhou et al prepared ZnSnO 3 hollow cubes using the co-precipitation method, followed by alkali etching and annealing under inert conditions [109].…”

Gas Sensing Properties of NiSb2O6 Micro- and Nanoparticles in Propane and Carbon Monoxide Atmospheres

“…Among the gases of which there is a broad interest for being monitored are oxygen (O 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), sulfur dioxide (SO 2 ), nitrogen oxides (NO and NO 2 ), hydrogen sulfide (H 2 S), methane (CH 4 ), ethanol (C 2 H 5 OH), and propane (C 3 H 8 ) [ [6,7], as well as the compounds LaFeO 3 , Mo 6 S 3 I 6 , and CuCrO 2 [8][9][10]. These materials are nowadays considered as extraordinary gas detectors because they possess good physical and chemical stability in different atmospheres.…”

Preparation of nanostructured photocatalyst ZnSnO3@S-doped g-C3N4 and its use in DB1 dye degradation through photocatalytic ozonation process

“…2 b reveals characteristic peaks at 22.9°, 32.98°, 38.8°, 47°, and 58.5° that match the standard pattern (JCPDS-11-0274) associated with ZnSnO 3 . This observation provides evidence that ZnSnO 3 is present in the ZnSnO 3 @S-doped g-C 3 N 4 nanocomposite synthesized [ 29 ].…”