石墨
材料科学
硝酸
纳米复合材料
催化作用
化学工程
金属
碳纤维
铜
表面改性
色散(光学)
无机化学
纳米技术
复合数
化学
复合材料
冶金
有机化学
物理
光学
工程类
作者
Ari Shin,Bong-Kyu Kim,Minkyoung Kim,Minkyung Jeong,Donggil Lee,Hyunwoo Ha,Soo Yeol Lee,Chunjoong Kim,Soohyung Park,Hyun You Kim,Chang‐Yong Nam,Jun Hyun Han
标识
DOI:10.1016/j.matchemphys.2022.127118
摘要
Acid treatment is the most widely used surface modification method for enhancing the electroless metal deposition (EMD) on carbon reinforcement materials (CRMs) for metal matrix nanocomposites. However, specific microstructural and physicochemical origins of the enhanced EMD on carbon surfaces by acid treatments have been rarely studied. Here, we investigated the effects of the nitric acid treatment on graphite, a prototypical combination of acid treatment and CRM, on the fidelity of Cu EMD and their structural and chemical origins. Complementary materials characterizations and density functional theory calculations revealed the acid-induced formation of broken C–C/CC graphitic bonds and resulting surface micropores on graphite; this enabled a uniform dispersion of catalytic Sn/Pd nanoparticles during pre-EMD sensitization/activation processes via spontaneous binding of Sn and Pd ions and, consequently, a much more uniform Cu layer EMD compared to the untreated graphite. We proposed a general mechanism illustrating how the acid-induced microstructural and chemical modifications of carbon surface affected the spatial uniformity of catalytic metal reduction during EMD and, finally, the quality of deposited metal layer. The results clearly reveal the origins of the enhanced EMD on carbon materials by acid treatments, providing guidelines for optimizing EMD on general CRMs for high-performance metal matrix nanocomposites.
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