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Abstract
Octahedral Cu2O crystals with all edge length about I pill were synthesized by reducing it copper-citrate complex With glucose. The morphology and Structure Of Cu2O particles were greatly affected by the concentration of glucose, reaction temperature, and time. When the concert tralion of glucose increased from 0.6 to 1.6 M, the morphology of Cu2O Could be changed from octahedral single crystals to spherical polycrystals. When the reaction time was prolonged from 6 to 36 11, solid Cu2O Octahedra could be changed to it mixture of hollow Cu2O octahedra and irregular Cu particles. After removing Cu particles. pure Cu2O hollow Octahedra could be obtained. The formation mechanism Of hollow Cu2O octahedra was discussed. Similarly, hollow Cu2O spheres could also be obtained using this method. The prepared hollow Octahedra[ Cu2O Particles exhibited higher pholoocatalytic activity for photodegradation of p-nitrophenol aqueous Solution under visible-light illumination thim other Cu2O particles with different morphologies (hollow spheres, solid octahedra, and solid spheres).
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