Controlled synthesis and properties of cuprous oxide by simply altering OH- concentration
Cuprous oxide ( Cu2O) nanoparticles and microcubes have been successfully fabricated by reduce of CuSO4 with ascorbic acid at room temperature. The synthetic procedure for Cu2O is simple and easy, without template or surfactant introduced. It suggested that OH - have effects on stability of j 100 J which lead to morphology of cubic. All of the samples were characterized by X - ray powder diffractometer ( XRD) , scanning electron microscopy ( SEM ) and fourier transform infrared spectrometer ( FT - IR) . The band gaps of as - prepared products were determined by UV - vis absorption spectra. The photocatalytic activities of as -synthesized Cu2 0 nanoparticles and microcubes for dyes were studied. It was found that Cu2 0 microcubes exhibited higher photocatalytic activity on photodegradation of methyl orange by visible light and the photocatalytic degradation ratio reached to 98. 1 %. The intensity of photoluminescence spectrum of Cu2 0 microcubes was lower, which indicated the recombination of electron - hole pairs is difficult and the separation of electron - hole pairs is easier. Moreover, the inhibiting bacteria growth behaviors of as - prepared Cu2 0 were observed.
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