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

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	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.
	2017-06-01
发表期刊	WILEY-V C H VERLAG GMBH
ISSN	2196-0216
卷号	4 期号:6 页码:1274-1278
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.
部门归属	[xu, junyuan ; zhang, bingsen ; wang, bolun ; wu, kuanghsu ; su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [peng, zhangquan] chinese acad sci, changchun inst appl chem, state key lab electroanalyt chem, 5625 renmin rd, changchun 130022, jilin, peoples r china ; [li, qingfeng] tech univ denmark, dept energy convers & storage, kemitorvet 207, dk-2800 lyngby, denmark ; [centi, gabriele] univ messina, dept elect engn ind chem & engn, sect ind chem, vle f stagno dalcontres 31, i-98166 messina, italy ; [centi, gabriele] instm caspe, lab catalysis sustainable prod & energy, vle f stagno dalcontres 31, i-98166 messina, italy
关键词	Nitrogen-doped Sp(2) Nanocarbon Carbon Dioxide Electro-reduction Reaction Route Reaction Mechanism
学科领域	Electrochemistry
资助者	National Natural Science Foundation of China [21133010, 51221264, 21261160487, 91545119]; "Strategic Priority Research Program" of the Chinese Academy of Sciences [XDA09030103]; Tingsui Ke fellowship
收录类别	SCI
语种	英语
WOS记录号	WOS:000407694400003
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79184
专题	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.