Decisive Intermediates Responsible for the Carbonaceous Products of CO2 Electro-reduction on Nitrogen-Doped sp(2) Nanocarbon Catalysts in NaHCO3 Aqueous Electrolyte

CORC > 金属研究所 > 中国科学院金属研究所

	Decisive Intermediates Responsible for the Carbonaceous Products of CO2 Electro-reduction on Nitrogen-Doped sp(2) Nanocarbon Catalysts in NaHCO3 Aqueous Electrolyte
	Xu, Junyuan; Zhang, Bingsen; Wang, Bolun; Wu, KuangHsu; Peng, Zhangquan; Li, Qingfeng; Centi, Gabriele; Su, Dang Sheng; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
刊名	WILEY-V C H VERLAG GMBH
	2017-06-01
卷号	4 期号:6 页码:1274-1278
关键词	Nitrogen-doped Sp(2) Nanocarbon Carbon Dioxide Electro-reduction Reaction Route Reaction Mechanism
ISSN号	2196-0216
英文摘要	Nitrogen-doped sp(2) nanocarbon materials have been considered promising catalysts for CO2 electro-reduction. However, a fundamental understanding about product selectivity and the reaction routes is still lacking. In this report, the reaction mechanism on nitrogen-doped sp(2) nanocarbon materials is resolved by clarifying the authentic origin of the carbonaceous products: CO and HCO2 . Two carbon-reduction pathways are identified based on a series of comparative studies by using differential electrochemical mass spectrometry and in situ CO adsorption experiments: a dominant pathway leading to CO from CO2 and a secondary pathway leading to HCO2- from HCO3-. Neither hydrocarbon (CxHy) nor alcohol or aldehyde (Cx HyOz) were detected in the reduction of CO2. However, CO, which is generally regarded as an intermediate to be transformed into these products on metal catalysts, can undoubtedly be produced and adsorbed on nitrogen- doped sp(2) nanocarbon catalysts during the reaction.; Nitrogen-doped sp(2) nanocarbon materials have been considered promising catalysts for CO2 electro-reduction. However, a fundamental understanding about product selectivity and the reaction routes is still lacking. In this report, the reaction mechanism on nitrogen-doped sp(2) nanocarbon materials is resolved by clarifying the authentic origin of the carbonaceous products: CO and HCO2 . Two carbon-reduction pathways are identified based on a series of comparative studies by using differential electrochemical mass spectrometry and in situ CO adsorption experiments: a dominant pathway leading to CO from CO2 and a secondary pathway leading to HCO2- from HCO3-. Neither hydrocarbon (CxHy) nor alcohol or aldehyde (Cx HyOz) were detected in the reduction of CO2. However, CO, which is generally regarded as an intermediate to be transformed into these products on metal catalysts, can undoubtedly be produced and adsorbed on nitrogen- doped sp(2) nanocarbon catalysts during the reaction.
学科主题	Electrochemistry
语种	英语
资助机构	National Natural Science Foundation of China [21133010, 51221264, 21261160487, 91545119]; "Strategic Priority Research Program" of the Chinese Academy of Sciences [XDA09030103]; Tingsui Ke fellowship
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79184]
专题	金属研究所_中国科学院金属研究所
通讯作者	Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Xu, Junyuan,Zhang, Bingsen,Wang, Bolun,et al. Decisive Intermediates Responsible for the Carbonaceous Products of CO2 Electro-reduction on Nitrogen-Doped sp(2) Nanocarbon Catalysts in NaHCO3 Aqueous Electrolyte[J]. WILEY-V C H VERLAG GMBH,2017,4(6):1274-1278.
APA	Xu, Junyuan.,Zhang, Bingsen.,Wang, Bolun.,Wu, KuangHsu.,Peng, Zhangquan.,...&Su, DS .(2017).Decisive Intermediates Responsible for the Carbonaceous Products of CO2 Electro-reduction on Nitrogen-Doped sp(2) Nanocarbon Catalysts in NaHCO3 Aqueous Electrolyte.WILEY-V C H VERLAG GMBH,4(6),1274-1278.
MLA	Xu, Junyuan,et al."Decisive Intermediates Responsible for the Carbonaceous Products of CO2 Electro-reduction on Nitrogen-Doped sp(2) Nanocarbon Catalysts in NaHCO3 Aqueous Electrolyte".WILEY-V C H VERLAG GMBH 4.6(2017):1274-1278.