We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Decisive Intermediates Responsible for the Carbonaceous Products of CO<sub>2</sub> Electro-reduction on Nitrogen-Doped sp<sup>2</sup> Nanocarbon Catalysts in NaHCO<sub>3</sub> Aqueous Electrolyte.
- Authors
Xu, Junyuan; Zhang, Bingsen; Wang, Bolun; Wu, KuangHsu; Peng, Zhangquan; Li, Qingfeng; Centi, Gabriele; Su, Dang Sheng
- Abstract
Nitrogen-doped sp2 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 sp2 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 (C xH y) nor alcohol or aldehyde (C xH yO z) 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 sp2 nanocarbon catalysts during the reaction.
- Subjects
ATMOSPHERIC carbon dioxide; TRANSITION metals; NANOPARTICLE synthesis; METAL catalysts; POLYMER electrodes; CARBON dioxide reduction; REACTION mechanisms (Chemistry); ELECTROLYTIC reduction; PREVENTION
- Publication
ChemElectroChem, 2017, Vol 4, Issue 6, p1274
- ISSN
2196-0216
- Publication type
Article
- DOI
10.1002/celc.201700104