Size-controllable carbon spheres doped Ni (II) for enhancing the catalytic oxidation of methanol

Authors : Yifen HU, Pengyu GAO, Zhen XU, Chuan ZHANG, Lizhen HUANG, Yunting HU, Yarui AN, Yingying GU

Pages : 248-260

View : 17 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Niinsert ignore into journalissuearticles values(II);/CSs were prepared using a simple two-step hydrothermal method. The morphology and composition of the catalysts were studied with scanning electron microscope, transmission electron microscope, and X-ray diffraction. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy showed that the surface of the prepared carbon spheres was rich in hydroxyl groups, which was beneficial to remove CO intermediates, and therefore, improving the catalytic efficiency and the antipoisoning ability of the catalysts. The results of cyclic voltammetry and chronoamperometry showed that the electrocatalytic activity and stability of Niinsert ignore into journalissuearticles values(II);/CSs were higher than that of unloaded NiAc under alkaline environment. When the nickel content was 5 wt.%, the peak oxidation current density of methanol on Niinsert ignore into journalissuearticles values(II);/CSs electrocatalyst reached the maximum of 34.54 mA/cminsert ignore into journalissuearticles values(2);, which was about 1.8 times that of unloaded NiAc. These results indicate that Niinsert ignore into journalissuearticles values(II);/CSs has potential applications in the electrocatalytic oxidation of methanol.
Keywords : Methanol oxidation reaction, size controllable carbon spheres, nickel based materials