Abstract
Nano-sized Nb 2O 5/carbon clusters composite material denoted as Ic, has been successfully synthesized by the calcination of NbCl 5/epoxy resin complex I. MnO 2-loaded Nb 2O 5/carbon clusters composite materials were also prepared by doping the MnO 2 particles on the surface of Ic. The compositions of the synthesized composite materials were determined using inductively coupled plasma (ICP) spectroscopy, elemental analysis and surface characterization by transmission electron microscopy (TEM). The ultraviolet–visible (UV–Vis), and electron spin resonance (ESR) spectra of the composites were also measured. The reduction reaction of methylene blue with the calcined materials under the visible light irradiation has also been examined. The composite material Ic, reduced the methylene blue under the irradiation of visible light ( λ > 460 nm). The MnO 2-loaded Ic composite material could also decompose an aqueous silver nitrate solution by visible light irradiation and give O 2 and Ag with a [O 2]:[Ag] ratio of 1:4.
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