Template-free to fabricate highly sensitive and selective acetone gas sensor based on WO3 microspheres

Highly selective low-temperature triethylamine sensor based on Ag/Cr2O3 mesoporous microspheres

“…Metal oxides, such as ZnO [1], TiO 2 [2], In 2 O 3 [3], SnO 2 [4] and WO 3 [5], are a kind of important sensing materials in gas sensors because of their advantages of small size, low cost, simple operation and good reversibility [6]. However, metal oxide semiconductors usually work at a high temperature to keep their good gas sensing properties, which is unfavorable for energy demands in modern society.…”

Structure and thermal decomposition of ammonium metatungstate

“…One of their major applications is that tungsten oxides, metal tungstates, tungsten carbides or tungsten metal can be prepared from them, all of which are significant for various industries. Tungsten oxides can be used as catalysts [2][3][4][5], photocatalysts [6][7][8][9][10], gas sensors [11][12][13][14][15][16][17][18], chromogenic materials [19][20][21]; metal tungstates can be used among others as catalysts [22], pigments [23,24]; tungsten carbides are the hard components in cutting, drilling, tools [25][26][27] and they are also used as catalysts [28,29]; while tungsten metal is a key element in lighting industry [1,[30][31][32][33][34].…”

Room-temperature high-performance acetone gas sensor based on hydrothermal synthesized SnO2-reduced graphene oxide hybrid composite

“…Furthermore, the detection of acetone gas is also of great significance in various other applications, such as industrial production, environmental monitoring, and forecast of toxic gas or volatility poisonous chemical leakage. Until now, many efforts 30 have been devoted to develop acetone gas sensors using various sensing materials, such as polymer [6][7] , ceramics [8][9] , metal oxide semiconductor (MOS) [10][11][12][13][14] , carbon nanotube-based composites [15][16][17] , but they suffer from specific drawbacks such as high-cost, step complexity and time-consuming, limiting their widely 35 applications.…”