Fabrication Of Low-dimensional TiO₂ Nanomaterials Used For Production Of Hydrogen Via Photocatalytic Decomposition Of Water

Presently, mankind is faced with severe shortage of energy, so looking for a new alternative energy source has attracted more and more attention of researchers around the world with the depletion of the coal and oil. Hydrogen is thought of as a new green alternative energy source. Hydrogen produced by the semiconductor photocatalytic decomposition of water is one of the most environment friendly method. Compared with the other semiconductors, TiO2 has many advantages, and it is a new type semiconductor photocatalyst and has broad application prospects in photocatalytic decomposition of water. Electrospinning is a simple and easy to operate method, and it can continuously prepare low-dimensional materials. So fabrication of low-dimensional titanium dioxide nano-materials by electrospinning and hydrogen produced by their photocatalytic decomposition of water have become a popular research subject in recent years.In the dissertation, low-dimensional TiO2 nanomaterials were fabricated via electrospinning, including nanofibers. porous and hollow nanofibers and nanobelts. TiO2/Au and TiO2:Fe3+ nanofibers were also fabricated via electrospinning. The samples were systematically characterized by TG-DTA, FTIR, XRD. FESEM and EDS. The results show that the diameter of the prepared composite nanofibers ranged from 50nm to 200nm, the diameter of the prepared composite porous and hollow nanofibers ranged from 150nm to 400nm, the width of the prepared composite nanobelts ranged from 2μm to 14μm, and the thickness of the prepared composite nanobelts ranged from 90nm to 220nm, the diameter of TiO2/Au and TiO2:Fe3+ nanofibers ranged from 50nm to 180nm and 80nm to 200nm respectively.