Effect of La-Doping on optical bandgap and ...
La-doped hematite nanotubes are fabricated by electrospinning of a sol–gel solution consisting of La(iii) acetylacetonate hydrate/polyvinylpyrrolidone(PVP)/ferric acetylacetonate, and subsequent sintering at 500 °C for 5 h in air. Further grinding of these nanotubes affords La-doped hematite nanoparticles. F