|Title:||Mesoporous TiO 2 Embedded with a Uniform Distribution of CuO Exhibit Enhanced Charge Separation and Photocatalytic Efficiency||Authors:||Liao Y.-T.
|Keywords:||CuO;metal oxide loading;metal-organic frameworks (MOFs);photocatalytic hydrogen evolution;TiO 2||Issue Date:||2017||Journal Volume:||9||Journal Issue:||49||Start page/Pages:||42425-42429||Source:||ACS Applied Materials and Interfaces||Abstract:||
Mixed metal oxide nanoparticles have interesting physical and chemical properties, but synthesizing them with colloidal methods is still challenging and often results in very heterogeneous structures. Here, we describe a simple method to synthesize mesoporous titania nanoparticles implanted with a uniform distribution of copper oxide nanocrystals (CuO@MTs). By calcining a titanium-based metal-organic framework (MIL-125) in the presence of Cu ions, we can trap the Cu in the TiO 2 matrix. Removal of the organic ligand creates mesoporosity and limits phase separation so that tiny CuO nanocrystals form in the interstices of the TiO 2 . The CuO@MTs exhibits superior performance for photocatalytic hydrogen evolution (4760 £gmol h -1 ) that is >90 times larger than pristine titania. ? 2017 American Chemical Society.
|Appears in Collections:||化學工程學系|
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