Inducing nanolayers-assembly of FePtDy 1D superstructure and its induced visible light photocatalysis effect for TiO2

Abstract

The new one-dimensional (1D) FePtDy nanolayers-assemblied superstructures are first synthesized by inducing synthesis through a phase transfer process. The morphology, structure, magnetic property, thermal stability, and photocatalysis have been investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction analysis, energy dispersive X-ray analysis, differential scanning calorimetry, X-ray photoelectron spectroscopy, vibration sample magnetometry measurement, and UV-vis spectroscopy. The as-prepared 1D FePtDy nanolayers-assembly superstructures can induce excellent visible light photocatalysis effect for TiO₂ by only simply mixing. Especially Fe₃₉Pt₅₃Dy₈ nanolayers-assemblied 1D superstructures exhibit the strongest enhancement for the photocatalytic reactivity of TiO₂ under visible light irradiation. In addition, phase transformation behaviors indicate that Dy inhibites transformation of L1₀ phase. The magnetic properties influenced by both the alloy component and shape, show that the coercivity has the parabolic type variation in which the Fe₃₈Pt₅₈Dy₄ nanolayers-assemblied 1D superstructures get the largest.