Abstract: Ni(OH)2 nanowires are synthesized through hydrothermal method,and then mixed with cobalt nitrate and 2-methylimidazole to synthesize Ni(OH)2@ZIF-67 precursor through solution method.The precursor is calcined at high temperature in oxygen atmosphere to obtain NiO@Co3O4 catalyst.The morphology,structure and composition of the catalyst are characterized by scanning electron microscopy (SEM),transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX).The electrocatalytic performance of the catalyst for hydrazine oxidation is studied by cyclic voltammetry,AC impedance and chronoamperometry.It is shown that NiO@Co3O4 is successfully prepared,in which NiO nanowires are embedded in Co3O4 framework.NiO@Co3O4 is verified to have good catalytic activity and catalytic stability for hydrazine oxidation,and its performance reaches the best when the calcination temperature is 300℃.
罗明洪, 王思洁. NiO@Co3O4复合物的制备及其对肼的电催化氧化研究[J]. 现代化工, 2022, 42(11): 136-140.
LUO Ming-hong, WANG Si-jie. Preparation of NiO@Co3O4 composite and its application in electrocatalytic oxidation of hydrazine. Modern Chemical Industry, 2022, 42(11): 136-140.
[1] 衣宝廉, 燃料电池和燃料电池车发展历程及技术现状[M].北京:科学出版社, 2018. [2] Zhang T, Asefa T.Heteroatom-doped carbon materials for hydrazine oxidation[J].Adv Mater, 2019, 31(13):1804394. [3] 温禾.直接肼燃料电池阳极镍基电催化剂的制备与催化性能研究[D].广州:华南理工大学, 2019. [4] Asazawa K, Yamada K, Tanaka H, et al.Electrochemical oxidation of hydrazine and its derivatives on the surface of metal electrodes in alkaline media[J].Journal of Power Sources, 2009, 191(2):362-365. [5] Ma Y, Li H, Wang R, et al.Ultrathin willow-like CuO nanoflakes as an efficient catalyst for electro-oxidation of hydrazine[J].Journal of Power Sources, 2015, 289:22-25. [6] Ding J, Kannan P, Wang P, et al.Synthesis of nitrogen-doped MnO/carbon network as an advanced catalyst for direct hydrazine fuel cells[J].Journal of Power Sources, 2019, 413:209-215. [7] Radwan A, Jin H, He D, et al.Design engineering, synthesis protocols, and energy applications of MOF-derived electrocatalysts[J].Nano-Micro Letters, 2021, 13(1):1-32. [8] Ge L, Yang Y, Wang L, et al.High activity electrocatalysts from metal-organic framework-carbon nanotube templates for the oxygen reduction reaction[J].Carbon, 2015, 82:417-424. [9] Qian Y, Hu Z, Ge X, et al.A metal-free ORR/OER bifunctional electrocatalyst derived from metal-organic frameworks for rechargeable Zn-Air batteries[J].Carbon, 2017, 111:641-650. [10] Kim H S, Kang M S, Yoo W C.Boost-up electrochemical performance of MOFs via confined synthesis within nanoporous carbon matrices for supercapacitor and oxygen reduction reaction applications[J].Journal of Materials Chemistry A, 2019, 7(10):5561-5574. [11] Zhang J, Liu H, Dou M, et al.Synthesis and characterization of Co3O4/multiwalled carbon nanotubes nanocomposite for amperometric sensing of hydrazine[J].Electroanalysis, 2015, 27(5):1188-1194. [12] Wang Q, Wu M, Meng S, et al.Hydrazine sensor based on Co3O4/rGO/carbon cloth electrochemical electrode[J].Advanced Materials Interfaces, 2016, 3(12):1500691. [13] Dai G, Xie J, Li C, et al.Flower-like Co3O4/graphitic carbon nitride nanocomposite based electrochemical sensor and its highly sensitive electrocatalysis of hydrazine[J].Journal of Alloys and Compounds, 2017, 727:43-51. [14] Liang S, Zhou T, Gao Y, et al.Facile synthesis of Co3O4/N-doped carbon nanocomposites as efficient electrode material for sensitive determination of hydrazine[J].Journal of Alloys and Compounds, 2020, 816:152574. [15] Huang G, Zhang F, Du X, et al.Metal organic frameworks route to in situ insertion of multiwalled carbon nanotubes in Co3O4 polyhedra as anode materials for lithium-ion batteries[J].ACS Nano, 2015, 9(2):1592-1599.