A facile synthesis of CNTs/Cu2O-CuO heterostructure composites by spray pyrolysis and its visible light responding photocatalytic properties

作者：Liu, Peng; Bao, Rui^*; Fang, Dong^*; Yi, Jianhong; Li, Lanbo

来源：Advanced Powder Technology, 2018, 29(9): 2027-2034.

DOI：10.1016/j.apt.2018.05.009

• Copper oxide composite
• Carbon nanotubes
• Photocatalyst
• SP

Carbon nanotubes (CNTs)/Cu2O-CuO composite powder was fabricated by a spray pyrolysis (SP) method. The copper acetate monohydrate (Cu(CH3COO)(2)center dot H2O) solution within CNTs dispersion was used as a precursor. The influences of decomposition temperatures, concentration of Cu(CH3COO)(2) solutions and CNTs mass fractions on the constituent phases and microstructures of the composite powder were investigated by XRD, FESEM, TEM, UV-Vis analysis methods. The results show that the composite powder prepared at 500 degrees C, with the concentration of 1.0 g/l Cu(CH3COO)(2)center dot H2O and 30.0 wt.% CNTs mass fraction, has the best photocatalytic performance due to the numerous particles precipitated on the CNTs surface and lower recombination rate of the photogenerated electron-hole pairs. Furthermore, tentative mechanisms of the nucleation-growth and photodegradation properties were explored based on the microstructure and photocatalytic analysis.

• 出版日期2018-9
• 单位昆明理工大学