Flame aerosol synthesis of tungsten trioxide powder: Particle morphology control and photodegradation activity under visible light irradiation

Ultrafine Particle Formation in Pulverized Coal, Biomass, and Waste Combustion: Understanding the Relationship with Flame Synthesis Process

“…In Figure 2a produce nonpremixed jet flames, with coal particles or precursors fed in from the central tube. 28,29 The co-flow diffusion flame acts as a prototype of the Hencken flat-flame burner (see Figure 2b) composed of hundreds of diffusion flamelets in which the ambient temperature and composition can be controlled independently. 30,31 Another type, the swirl flame burner, represents a popular technique in coal-fired power plants.…”

“…Thanks to the similarity in the ultrafine PM formation mechanism, it is possible to borrow the experimental technique for precursor thermal conversion into the fundamental research toolbox for solid fuel combustion. , Regarding the high-temperature supporting ambience, we make observations in Figure that some specific burner configurations have been parallelly used for solid fuel combustion and flame synthesis. In Figure a, the co-flow or multiannular burner can produce nonpremixed jet flames, with coal particles or precursors fed in from the central tube. , The co-flow diffusion flame acts as a prototype of the Hencken flat-flame burner (see Figure b) composed of hundreds of diffusion flamelets in which the ambient temperature and composition can be controlled independently. , Another type, the swirl flame burner, represents a popular technique in coal-fired power plants . As seen in Figure d, the swirl flame can serve as an additional approach for modulating synthesized nanoaerosols …”

“…The flame and particle morphology from tungsten trioxide (WO 3 ) synthesis are reprinted from Powder Technology , Vol. 294, Wang, S.; Lan, Z.; Huang, Y., Flame aerosol synthesis of tungsten trioxide powder: Particle morphology control and photodegradation activity under visible light irradiation, 259–265, Copyright 2016, with permission from Elsevier (ref ). (b) Hencken flat-flame burner.…”

Electronic structure, elasticity, Debye temperature and anisotropy of cubic WO 3 from first-principles calculation

“…As a type of excellent semiconductor material, tungsten trioxide (WO 3 ) has been widely used in multiphase catalysis, electroluminescence, photodegradation, high-temperature superconductivity and new energy fields [1][2][3][4][5][6][7][8][9][10]. The ideal cubic WO 3 primitive cell is a kind of octahedral structure; W and O occupy the central and six corners of the octahedron (figure 1), respectively.…”