【作者】：Wang Chong, Ding Mengdi, Kou Xueying,Guo Lanlan,Feng Changhao,Li Xin,Zhang Hong,Sun Peng,Sun Yanfeng*, Lu Geyu*
【题目】：Detection of nitrogen dioxide down to ppb levels using flower-like tungsten oxide nanostructures under different annealing temperatures
【关键词】：WO3,Flower-like,Solvothermal,Gas sensor,NO2,CHEMICAL-VAPOR-DEPOSITION, GAS SENSOR, SENSING CHARACTERISTICS, HIGH-PERFORMANCE, NO2 DETECTION, THIN-FILMS, WO3 FILMS, NANOPARTICLES, SENSITIVITY
【版面信息】：JOURNAL OF COLLOID AND INTERFACE SCIENCE 483 (2016) 314-320
摘要:
3D hierarchical flower-like WO3center dot 0.33H2O nanostructures were synthesized via a facile solvothermal method without using any template or surfactant. After annealed at high temperature, the as-prepared WO3 center dot 0.33 H2O would partly or fully transform into monoclinic WO3with the morphology almost unchanged. Gas sensing properties of the sensor based on these flower-like nanostructures with the relationship of annealing temperature were also investigated systematically. The experiment results indicate the sensor shows highest response to NO2when the annealing temperature is 500℃. At the same time, the detection limit can be as low as similar to 5 ppb level. Thus, the novel flower-like nanostructures might be a promising material for designing NO2gas sensor with high performance.
