Synthesis of a Au-(TiO.SUB.2-x./WO.SUB.3-x.) semiconductor composite using fluidized bed chemical vapor deposition (FBCVD)
Synthesis of a Au-(TiO.SUB.2-x./WO.SUB.3-x.) semiconductor composite using fluidized bed chemical vapor deposition (FBCVD)
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US 11,986,801 B1
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الصحة - Health
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2024
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مكتب البراءات الأمريكي - US Patent Office
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Khan; Hayat (Al-Ahsa, SA)
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A method of synthesizing an Au—(TiO.sub.2-y/WO.sub.3-x) semiconductor composite, the method comprising: loading tungsten oxide (WO.sub.3) powder in a fluidized bed reactor followed by H.sub.2 treatment to produce reduced tungsten oxide (WO.sub.3) nanoparticles or WO.sub.3-x nanoparticles; producing reduced titanium dioxide (TiO.sub.2) nanoparticles or TiO.sub.2-y (containing defect states) nanoparticles in-situ; coupling the TiO.sub.2-y nanoparticles with the WO.sub.3-x nanoparticles to provide a titanium dioxide/tungsten oxide nanocomposite (TiO.sub.2-y/WO.sub.3-x); and simultaneous substitutional doping of TiO.sub.2-y and WO.sub.3-x in the titanium dioxide/tungsten oxide nanocomposite (TiO.sub.2-y/WO.sub.3-x) with gold ions (Au) to obtain the Au—(TiO.sub.2-y/WO.sub.3-x) semiconductor composite; wherein x has a value between 0.33 and 0.37. The thus produced composite can be used as a photocatalyst.