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 chemic...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 diffrac-tion (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 plat-ing 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 Ni3P,Fe2NiP and (Fe,Ni)3P. 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%.展开更多
基金Projects 20060359011 supported by the Doctoral Subject Foundation of the Ministry of Education of China103-037016 by the Technological Innovation Foundation of Hefei University of Technology
文摘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 diffrac-tion (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 plat-ing 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 Ni3P,Fe2NiP and (Fe,Ni)3P. 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%.
