Fabrication Of Nickel-based Carbon Material And Their Performances

Transition metal nickel-based catalysts attract many attentions owing to its excellent catalytic and electrochemical properties. In this paper, electrospinning, immersion, mechanical doping and carbonization method were applied in the experiment to fabricate nickel-based catalyst. The novel catalyst was investigated the properties in catalytic hydrogenation and electrochemical analysis. The research contents are as follows:(1) The electrospun composite nanofibers was immersed in the Ni(NO3)2 solution for 24 h and carbonized at the temperature of 600 to obtain Ni NPs/CNFs catalyst. The Fourier Transform Infrared Spectroscopy(FTIR), Scanning electron microscope(SEM) and Transmission electron microscope(TEM) were used to characterize the materials. The results show that the surface of composite nanofibers was smooth and no junction, nickel nanoparticles uniformly dispersed on the carbon nanofibers. The catalysts were applied in the catalytical hydrogenation reaction. According to investigate the condition of reaction, the best catalytic systems was obtained. The materials were also used to fabricate the electrode of supercapacitance and investigated the electrochemical properties.(2) Doping Ni(NO3)2 in the precursor solution, electrospinning, immersion, mechanical doping and carbonization method were applied in the experiment to fabricate Ni NPs/CNFs catalyst. Variety of tests was used to characterize the materials. The results show that nickel nanoparticles uniformly dispersed in the carbon nanofibers. Different carbonization temperature of catalyst and the catalyst with different ratio was investigated in the catalytical hydrogenation reaction. The results show that the catalyst which fabricated at the carbonization temperature of 600, the ratio of AN and Ni(NO3)2 was 10 had the best catalytical properties. The test results show that Ni NPs/CNFs materials had better electrochemical properties than pure CNFs materials.(3) Doping C10H14 Ni O14 in the precursor solution, electrospinning, immersion, mechanical doping and carbonization method were applied in the experiment to fabricate Ni NPs/CNFs catalyst. Serials of reaction conditions were investigate. The results show that the catalyst had the highest yields when the catalyst which fabricated at the carbonization temperature of 600, the ratio of AN and C10H14 Ni O14 was 10, the reaction time was 6 and the dosage of catalyst was 0.05 g. The average diameter of nickel nanoparticles was 8 nm and nickel nanoparticles uniformly dispersed in the carbon nanofibers. The CV test results show that average specific capacitances was 60 F g-1 when the scan rate was 2 m V/s. With the increase of scanning rates, the value of specific capacitances decreased.In a word, combination of nickel nanoparticles and carbon nanofibers can effectively avoid the disadvantages of traditional catalyst. The synthesis of these novel catalysts provide new route for other catalyst and also provide the fundamental basis of nickel-based catalyst which was applied in the area of catalytic reaction and electrochemical.