Coral-like Au/TiO2 Hollow Nanofibers with Through-Holes as a High-Efficient Catalyst through Mass Transfer Enhancement

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Abstract
One-dimensional hollow nanomaterials were widely used in catalysis field. However, the inner surfaces of one-dimensional hollow nanostructures could not be effectively utilized in liquid reaction due to diffusional limitation caused by the large ratio of length to diameter. In this work, a template assisted coaxial electrospinning method was developed to prepare TiO2 hollow nanofibers with through-holes which was further employed as carrier for Au nanoparticles. The Au/TiO2 hollow nanofibers with through-holes showed significantly catalytic activity enhancement to the reduction of 4-nitrophenol in aqueous solution compared with solid and hollow nanofibers counterparts. The through-holes which provided unrestricted macropores for mass transfer in liquid solution were studied to be accounted for the catalytic activity enhancement. We believe that this through-hole hollow nanostructures can be used widely in other fields.
Funding Information
  • State Administration of Foreign Experts Affairs (B14009)
  • National Natural Science Foundation of China (21374001, 21433012, 21774005, 51772010)
  • Ministry of Education of the People's Republic of China (B14009)
  • Central Committee of the Communist Party of China

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