氮掺杂生物质炭耦合氧化铜材料用于电催化还原CO2
Nitrogen-doped Biomass Carbon Coupled with Copper Oxide Materials for Electrocatalytic Reduction of CO2
郭天宇 1张佳宁 2白德豪 3张金男 2祁彧 2王红涛2
作者信息
- 1. 太原理工大学 环境科学与工程学院,山西 晋中;太原理工大学 气体能源高效利用山西省重点实验室,山西 太原
- 2. 太原理工大学 环境科学与工程学院,山西 晋中
- 3. 中石油煤层气有限责任公司忻州分公司,山西 忻州
- 折叠
摘要
[目的]电催化技术将CO2 转化为高附加值燃料和化学品具有广阔的应用前景.然而,开发具有性能优异的电催化剂仍具有巨大的挑战性.[方法]采用麦麸皮为生物质炭前驱体,利用热解法制备氮掺杂生物质炭材料(NC),进一步通过水热法与CuO进行耦合,构筑了一系列的CuO@NC复合材料.采用多种表征手段,对其晶相、微观形貌和结构及元素价态进行分析,并通过电催化还原CO2反应来探讨其电催化性能.[结果]结果表明,在160℃合成温度下获得的复合催化剂(CuO@NC-160)对乙烯有较高的选择性,在-1.18 V(vs.RHE)时,法拉第效率为26.85%.研究为制备廉价、高效的CuO基电催化剂提供了一种可行路径.
Abstract
[Purposes]Electrocatalytic technology for converting CO2 into high-value-added fuels and chemicals has promising applications.However,developing electrocatalysts with superior perfor-mance still faces significant challenges.[Methods]In this study,wheat bran was used as the precursor of biomass carbon and the pyrolysis method was used to prepare nitrogen-doped biomass carbon mate-rials(NC).By further coupling with CuO via a hydrothermal method,a series of CuO@NC composite materials were costructed.The crystalline phase,microscopic morphology,structure,and elemental valence states were analyzed by multiple characterization techniques.The electrocatalytic performance was investigated towards the electrocatalytic reduction of CO2.[Findings]Results indicate that the composite catalyst synthesized at 160℃(CuO@NC-160)exhibits high selectivity towards ethylene,with a maximum faradaic efficiency of 26.85%at-1.18 V vs.RHE.This study presents a feasible pathway for fabricating low-cost and efficient CuO-based electrocatalysts.
关键词
CuO/生物质炭/二氧化碳/电催化/还原Key words
copper oxide/biomass carbon/carbon dioxide/electrocatalysis/reduction引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据