化学工程2024，Vol.52Issue(6)：18-22,28,6.DOI:10.3969/j.issn.1005-9954.2024.06.004
碳化钒改性镍基催化剂的尿素电氧化性能
Vanadium carbide modified nickel-based catalyst for urea electrooxidation
摘要
Abstract
Urea electrolysis has attracted wide attention for its energy-saving and environmentally friendly prospects in the fields of urea-containing wastewater treatment and hydrogen production.The key issue is the design of efficient and stable catalysts for urea electrooxidation.The synthesis of VC(vanadium carbide)modified nickel-based catalysts supported on multi-walled carbon nanotubes(Ni-VC/MWCNTs)for UOR(urea electrooxidation reaction)was reported.Ni-VC/MWCNTs has a superior current density of 343.3 mA/mg.Particularly,Ni-VC/MWCNTs has a smaller Tafel slope and a lower charge transfer resistance compared with Ni/MWCNTs.Moreover,the current density under the steady state of Ni-VC/MWCNTs is also enhanced.XPS(X-ray photoemission spectroscopy)demonstrates that the introduction of VC makes Ni more susceptible to lose electrons to form the active component NiOOH,which improves the UOR performance.Furthermore,in the urea electrolytic cell,the voltage required to supply 10 mA/cm2 with Ni-VC/MWCNTs as the anode is reduced by nearly 100 mV compared with Ni/MWCNTs.The result suggests Ni-VC/MWCNTs is an efficient catalyst for urea electrolysis,which is expected to high-efficiency hydrogen production and resourceful utilisation of wastewater.关键词
碳化钒/镍基催化剂/尿素/电催化氧化Key words
vanadium carbide/nickel-based catalysts/urea/electrocatalytic oxidation分类
信息技术与安全科学引用本文复制引用
田彦妮,袁立杰,张珂,赵晓红,杨伯伦,王鹭..碳化钒改性镍基催化剂的尿素电氧化性能[J].化学工程,2024,52(6):18-22,28,6.基金项目
国家自然科学基金资助项目(22008189) （22008189）
陕西省自然科学基础研究计划项目(2019JQ-587) （2019JQ-587）
长安大学中央高校基本科研业务费专项资金资助项目(300102282101) （300102282101）
