高等学校化学学报2025，Vol.46Issue(5)：84-91,8.DOI:10.7503/cjcu20250043
缺陷改性商业碳纳米管用于耐毒化二氧化碳电还原
Defect-modified Commercial Carbon Nanotubes for Poison-resistant Electrochemical Carbon Dioxide Reduction
摘要
Abstract
In the electrochemical carbon dioxide reduction reaction(ECO₂RR),catalytic materials face the challenge of complex practical application conditions,especially in terms of poisoning resistance.In this study,commercial multi-walled carbon nanotubes(MWCNT)were used to prepare defects rich in graphitic carbon materials through nitrogen doping and removal methods.The morphology,crystal structure,elemental composition,and defect degree of the catalysts were analyzed and characterized by transmission electron microscopy(TEM),aberration-corrected scanning transmission electron microscopy(AC STEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and Raman spectrometer.Based on the flow cell testing system,the results showed that the activity of defective carbon nanotubes is much higher than that of untreated carbon nanotubes,and the catalytic performance improves with the increase of defect degree.Among them,MWCNT-N-800 with the highest defect degree can achieve excellent electrochemical activity for carbon dioxide reduction to carbon monoxide over a broad potential range,with a maximum carbon monoxide Faraday efficiency of more than 99%and a current density of more than 200 mA/cm2.Furthermore,under the simulated flue gas conditions containing poisoning substances,the Faradaic efficiency of carbon monoxide for MWCNT-N-800 still remained above 96%,showing good poisoning resistance.This study provides ideas for the development of efficient and poison-resistant non-metallic ECO₂RR catalysts.关键词
二氧化碳还原/电催化/碳缺陷/商业碳纳米管/抗毒化Key words
Carbon dioxide reduction/Electrocatalysis/Carbon defect/Commercial carbon nanotubes/Poison-resistant分类
化学引用本文复制引用
李承育,尚露,张铁锐..缺陷改性商业碳纳米管用于耐毒化二氧化碳电还原[J].高等学校化学学报,2025,46(5):84-91,8.基金项目
国家重点研发计划项目(批准号:2024YFE0103000)和国家自然科学基金(批准号:52422211,52120105002,22279150,22421005)资助. Supported by the National Key Research and Development Program of China(No.2024YFE0103000)and the National Natural Science Foundation of China(Nos.52422211,52120105002,22279150,22421005). （批准号:2024YFE0103000）
