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  Electrochemical fixation of nitrogen and its coupling with biomass valorization with a strongly adsorbing and defect optimized boron-carbon-nitrogen catalyst

Qin, Q., Heil, T., Schmidt, J., Schmallegger, M., Gescheidt, G., Antonietti, M., et al. (2019). Electrochemical fixation of nitrogen and its coupling with biomass valorization with a strongly adsorbing and defect optimized boron-carbon-nitrogen catalyst. ACS Applied Energy Materials, 2(11), 8359-8365. doi:10.1021/acsaem.9b01852.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-16AE-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-5EF2-1
Genre: Journal Article

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 Creators:
Qin, Qing1, Author              
Heil, Tobias2, Author              
Schmidt, Johannes, Author
Schmallegger, Max, Author
Gescheidt, Georg, Author
Antonietti, Markus3, Author              
Oschatz, Martin1, Author              
Affiliations:
1Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2364733              
2Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2522693              
3Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: non-metal catalysis, porous carbon, heteroatoms, N2 reduction, HMF oxidation
 Abstract: The electrochemical conversion of low-cost precursors into high-value chemicals using renewably generated electricity is a promising approach to build up an environmental friendly energy cycle, including a storage element. The large-scale implementation of such process can however only be realized by the design of cost-effective electrocatalysts with high efficiency and highest stability. Here, we report the synthesis of N and B co-doped porous carbons. The constructed B-N motives combine abundant unpaired electrons and Frustrated Lewis pairs (FLPs). They result in desirable performance for electrochemical N2 reduction reaction (NRR) and electrooxidation of 5-hydroxymethylfurfural (HMF) in absence of any metal co-catalyst. A maximum Faradaic efficiency of 15.2% with a stable NH3 production rate of 21.3 µg h-1 mg-1 is obtained in NRR. Besides, 2,5-furandicarboxylic acid (FDCA) is firstly obtained by using non-metal-based electrocatalysts at a conversion of 71% and with yield of 57%. Gas adsorption experiments elucidate the relationship between the structure and the ability of the catalysts to activate the substrate molecules. This work opens up deep insights for the rational design of non-metal-based catalysts for potential electrocatalytic applications and the possible enhancement of their activity by the introduction of FLPs and point defects at grain boundaries.

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Language(s): eng - English
 Dates: 2019-11-052019
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1021/acsaem.9b01852
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Title: ACS Applied Energy Materials
  Abbreviation : ACS Appl. Energy Mater.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 2 (11) Sequence Number: - Start / End Page: 8359 - 8365 Identifier: ISSN: 02574-0962