Effects of acid mixture treatment during oxidation process on the electroless copper plating for multi-walled carbon tubes
WANG Xinhua1, GUO Baisong1, NI Song1, YI Jianhong2, SONG Min1
1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Abstract In this work, the nano-copper particles were coated on the multi-walled carbon nanotubes (MWCNTs) by electroless plating, and the effects of acid mixture time and pretreatment of acid mixture on the nano-Cu particles coated on MWCNTs were also investigated. The results show that the acid treatment time mainly affects the removing content of amorphous carbon layer that attached on the surface of the CNTs. The amorphous carbon layer can be partially corroded by appropriate acid treatment time and acquire perfect electroless plating results. Pretreatment of acid mixture has a corrosive influence on the C walls. When only the sulfuric acid concentration reaches the critical value, the C wall can be corroded seriously and notably. The critical value of HNO3:H2SO4 is 1:3. If the concentration value of sulfuric acid is lower than the critical value, pretreatment of acid mixture can only corrode the amorphous carbon layer on the surface of MWCNTs, but cannot corrode the C wall obviously. This study demonstrated that the good dispersed nano-Cu particles coated on MWCNTs can be obtained after treated by sulfuric acid and nitric acid in ratio 1:3 for 5 h.
WANG Xinhua,GUO Baisong,NI Song, et al. Effects of acid mixture treatment during oxidation process on the electroless copper plating for multi-walled carbon tubes[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(3): 266-273.
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2018, Vol. 23 
