山西大学学报（自然科学版）2024，Vol.47Issue(4)：842-853,12.DOI:10.13451/j.sxu.ns.2024108
镍/氧化镍复合材料用于尿素电催化氧化的研究
Study on Electrocatalytic Oxidation of Urea by Nickel/Nickel Oxide Composites
摘要
Abstract
Electrocatalyst for urea oxidation reaction(UOR)was prepared by a simple one-step hydrothermal method using eggshell membrane as carbon carrier,NiSO4·6H2O as nickel precursor and urea as mineralizer.The components,phases,micromorphology and valency of the catalysts were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission elec-tron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS).The catalytic activity and stability of the electrocatalysts were evaluated by electrochemical methods such as Cyclic voltammetry(CV)、Electrochemical impedance spectroscopy(EIS)and i-time(i-t).The results show that Ni/NiO-C@400 has good electrocatalytic activity(voltage 0.60 V vs SCE,current density 182 mA·cm-2)and stability(current density retention 95%after 12 h i-t test)for urea oxidation reaction,which may be due to the presence of N and S atoms,Ni is more likely to form the active species Ni3+for urea oxidation.In addition,the synergistic effect of Ni and NiO is more conducive to maintaining excellent catalytic activity and stability.关键词
尿素氧化反应/蛋壳膜/协同效应/杂原子Key words
urea oxidation reaction/eggshell membrane/synergistic effect/heteroatom分类
数理科学引用本文复制引用
武娜,王裕涵,乔弋辰,王嘉钰,洪明明,常文津,杨嘉乐,王炎..镍/氧化镍复合材料用于尿素电催化氧化的研究[J].山西大学学报（自然科学版）,2024,47(4):842-853,12.基金项目
山西省自由探索类青年基金(202203021222317) （202203021222317）
吕梁市科技局高新领域项目(2023GXYF05) （2023GXYF05）
山西省大学生创新创业训练项目(S202310812006) （S202310812006）
吕梁学院教学改革创新项目(XJKCSZ202301) （XJKCSZ202301）
