Title of article :
Enhanced activity of mesoporous Nb2O5 for
photocatalytic hydrogen production
Author/Authors :
Xinyi Chen، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
The mesoporous Nb2O5 photocatalysts were synthesized via an evaporation-induced self-assembly (EISA) method. The mesoporous structure
of the as-made samples was studied by small-angle X-ray diffraction, N2 adsorption–desorption isothermal and transmission electron microscopy.
The increase of the calcination temperature during the synthesis resulted in enhanced crystallization, but decreased mesoporosity of the samples.
The later was found to have a crucial influence on the photocatalytic activity by bringing on decreased BET surface area and especially increscent
pore wall thickness. The advantage of the mesoporous Nb2O5 was also proved by performing 20 times higher photocatalytic activity than a bulk
Nb2O5 without any porosity. A model was given to describe the effect of mesoporosity on the transportation and recombination of carriers.
Keywords :
Photocatalytic activity , Niobium oxide , Mesoporous , hydrogen production
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science