| Mechanism and Microstructure of Electroless Ni-Fe-P Plating on CNTs |
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| 作者姓名： | XUE Ru-jun WU Yu-cheng |
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| 作者单位： | [1]School of Materials Science and Engineering Hefei University of Technology Hefei Anhui 230009, China [2]Department of Chemical Engineering Anhui University of Science and Technology Huainan Anhui 23200 ], China |
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| 基金项目： | Projects 20060359011 supported by the Doctoral Subject Foundation of the Ministry of Education of China and 103-037016 by the Technological Innovation Foundation of Hefei University of Technology. |
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| 摘 要： | Electroless Ni-Fe-P alloy plating on the surface of CNTs was carded out with a bath using citrate salt and lactic acid as complex agents. We proposed a chemical reaction mechanism. The morphology, structure and chemical composition of the Ni-Fe-P/CNTs were studied with the aid of a scanning electronic microscope （SEM）, X-ray diffraction （XRD） and an energy-dispersive X-ray spectral analysis （EDS）. The results show that through a correct pre-treatment and electroless plating, Ni-Fe-P/CNTs composite particles can be obtained. The optimum electroless plating parameters of 35-42℃ and pH of 8.5-9.7 were achieved. The as-plated Ni-Fe-P alloy is amorphous. After a heat treatment at 500℃ for 90 min in H2, the coating is transformed into crystalloid Ni3E Fe2NiP and （Fe,Ni）3R The Ni-Fe-P alloy coating on the surface of CNTs is smooth and unique. The amount of Ni on the surface （mass fraction） of the Ni-Fe-P/CNTs composite particles is 29.13%, that of Fe 3.19% and that of P 2.28%.
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| 关 键 词： | 碳纳米管 Ni-Fe-P合金 电镀 微观结构 |
| 收稿时间： | 20 March 2007 |
| 修稿时间： | 2007-03-20 |
Mechanism and Microstructure of Electroless Ni-Fe-P Plating on CNTs |
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| XUE Ru-jun WU Yu-cheng.Mechanism and Microstructure of Electroless Ni-Fe-P Plating on CNTs[J].Journal of China University of Mining and Technology,2007,17(3):424-427. |
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| Authors: | XUE Ru-jun WU Yu-cheng |
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| Affiliation: | 1. School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;2. Department of Chemical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China |
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| Abstract: | Electroless Ni-Fe-P alloy plating on the surface of CNTs was carried out with a bath using citrate salt and lactic acid as complex agents. We proposed a chemical reaction mechanism. The morphology, structure and chemical composition of the Ni-Fe-P/CNTs were studied with the aid of a scanning electronic microscope (SEM), X-ray diffraction (XRD) and an energy-dispersive X-ray spectral analysis (EDS). The results show that through a correct pretreatment and electroless plating, Ni-Fe-P/CNTs composite particles can be obtained. The optimum electroless plating parameters of 35-42 ℃ and pH of 8.5-9.7 were achieved. The as-plated Ni-Fe-P alloy is amorphous. After a heat treat-ment at 500 ℃ for 90 min in H2, the coating is transformed into crystalloid Ni3P, Fe2NiP and (Fe,Ni)3P. The Ni-Fe-P al-loy coating on the surface of CNTs is smooth and unique. The amount of Ni on the surface (mass fraction) of the Ni-Fe-P/CNTs composite particles is 29.13%, that of Fe 3.19% and that of P 2.28%. |
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| Keywords: | carbon nanotubes Ni-Fe-P alloy eletroless plating mechanism structure |
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