title: Facile synthesis of TiO2 nanocrystals using NH4F as morphology-controlling agent and its influences on photocatalytic activity.
abstract: Controllable synthesis of nanomaterials with different morphologies can significantly affect their properties. Here we report that the morphology and facet orientation of TiO2 nanocrystals can be readily modulated via a hydrothermal method using a simple morphology-controlling agent of NH4F. The photocatalytic activity of resultant TiO2 has been evaluated by photodegradation of methyl orange. The results indicate that the introduction of NH4F can be used to modulate the mophology and, thereby, the photocatalytic activity of TiO2. The obtained TiO2 with high-energy facet, small size, and large surface area can exhibit an improved photocatalytic efficiency, which may be promising for real application.
authors: National Center for Nanoscience and Technology, Beijing 100190, China.
authors: Bin
authors: B
authors: Wang
authors: Xin
authors: X
authors: Zhang
authors: Meng
authors: M
authors: He
authors: Tao
authors: T
authors: He
mesh_terms: D064751:Ammonium Compounds; D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D005459:Fluorides / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D008968:Molecular Conformation / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D000644:Quaternary Ammonium Compounds / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D064751:Ammonium Compounds; D000644:Quaternary Ammonium Compounds; C009495:titanium dioxide; C024822:ammonium fluoride; D014025:Titanium; D005459:Fluorides