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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
Source PublicationWILEY-V C H VERLAG GMBH
ISSN2196-0216
Volume4Issue:6Pages:1274-1278
AbstractNitrogen-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.
description.department[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
KeywordNitrogen-doped Sp(2) Nanocarbon Carbon Dioxide Electro-reduction Reaction Route Reaction Mechanism
Subject AreaElectrochemistry
Funding OrganizationNational Natural Science Foundation of China [21133010, 51221264, 21261160487, 91545119]; "Strategic Priority Research Program" of the Chinese Academy of Sciences [XDA09030103]; Tingsui Ke fellowship
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79184
Collection中国科学院金属研究所
Corresponding AuthorSu, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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.
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