Preparation and Mechanism of Cu/Nano-TiO₂/PBO Composite Fibers by Photocatalysis Electroless Plating

Abstract:

Cu/nanoTiO₂/PBO composite fiber with low density, high strength, toughness and conductivity was prepared with a photocatalysis electroless plating method by reduction depositing Cu²⁺ on the surface of nanoTiO₂/PBO composite fiber. The process parameters on the preparation of Cu/nanoTiO₂/PBO composite fiber were optimized by the characterization of surface morphology, phase, composition, pull-out strength and resistivity of Cu/nanoTiO₂/PBO composite fibers using SEM, XRD, EDS, electronic tester of tensile strength and multimeter, respectively. The mechanism of Cu coating nanoTiO₂/PBO composite fiber was also discussed in this study. The results showed that Cu/nanoTiO₂/PBO composite fibers were well prepared under the bath composition of CuSO₄5H₂O 16gL^-1, KNaC₄H₄O₆4H₂O 15 gL^-1, Na₂EDTA2H₂O 24 gL^-1, HCHO 16 mlL^-1, NaOH 14 gL^-1, C₁₀H₈N₂ 24 mgL^-1 and K₄Fe (CN)6H₂O 12 mgL^-1 by the UV-light irradiated for 30 min. The diameter, pull-out strength and resistivity of Cu/nanoTiO2/PBO composite fiber were 20.2 μm, 2.25 GPa and 0.02864 Ωmm²m^-1, respectively. Cu²⁺ ions on the surface of nanoTiO₂/PBO composite fiber were reduced to Cu by photo-electrons which were generated of nanoTiO₂ under the UV-light irradiated, and the primary Cu layer as a catalytic center promoted the reduction reactions of producing Cu/nanoTiO₂/PBO composite fiber further.

• Periodical: Materials Science Forum (Volume 749)
• Pages: 205-210
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.749.205
• Online since: March 2013
• Authors: Yan Yan Luan, Xue Feng Liu, Zhan Nan Peng, Jian Xin Xie
• Keywords: Coating Mechanism, Cu/Nano-TiO₂/PBO Composite Fiber, Photocatalysis Electroless Plating

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