Open AccessSize-controllable carbon spheres doped Ni (II) for enhancing the catalytic oxidation of methanol
Author(s) -
Yifen Hu,
Pengyu Gao,
Zhen Xu,
Zhang Chuan,
Lijia Huang,
Yunting Hu,
Yarui An,
Yingying Gu
Publication year - 2021
Publication title -
turkish journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 46
eISSN - 1303-6130
pISSN - 1300-0527
DOI - 10.3906/kim-2009-77
Subject(s) - chronoamperometry , cyclic voltammetry , chemistry , catalysis , methanol , electrocatalyst , scanning electron microscope , x ray photoelectron spectroscopy , nickel , fourier transform infrared spectroscopy , transmission electron microscopy , carbon fibers , nuclear chemistry , inorganic chemistry , chemical engineering , electrochemistry , materials science , organic chemistry , composite number , electrode , composite material , engineering
Ni(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 Ni(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 Ni(II)/CSs electrocatalyst reached the maximum of 34.54 mA/cm 2 , which was about 1.8 times that of unloaded NiAc. These results indicate that Ni(II)/CSs has potential applications in the electrocatalytic oxidation of methanol.