Swapping CO 2 electro-reduction active sites on a nickel-based hybrid formed on a “guilty” covalent triazine framework
Source abstract
Abstract
A homogeneous and almost monodisperse Ni/CTFph composite of ultrasmall Ni NPs (∼2.2 nm) has been prepared by Metal Vapor Synthesis (MVS) and deposited on a highly porous and high specific surface area covalent triazine network. Metal doping was deliberately carried out on a metal-free system exhibiting superior CO2RR selectivity towards the challenging CO2-to-HCOOH electroreduction. Electrochemical studies aimed at shedding light on the CO2RR performance of the ultimate composite have allowed speculation on the synergistic or exclusive action of the two potentially active phases (N-doped C-network vs. Ni NPs). In contrast to the generally exclusive CO2-to-CO reduction mechanism described for the state-of-the-art Ni NP-based CO2RR electrocatalysts, Ni/CTFph has unveiled the unprecedented ability of Ni NPs to promote the alternative and more challenging 2e- CO2-to-HCOOH reduction pathway, even at moderately reducing potentials (-0.3 V vs. RHE).
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: CO2 Reduction Techniques and Catalysts · Covalent Organic Framework Applications · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019, Sesto F.no, Florence, Italy
Department of Chemistry “Giacomo Ciamician”, University of Bologna, Via Piero Gobetti 85, 40129 Bologna, Italy
Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via G. Moruzzi, 1-56124 Pisa, Italy
University of Florence, Department of Chemistry “U. Schiff” - DICUS – and INSTM Research Unit, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
Center for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, Torino, 10144, Italy
Institute of Condensed Matter Chemistry and Technologies for Energy, ICMATE-CNR, 35127 Padova, Italy
Center for Chemical Catalysis – C3, Alma Mater Studiorum – Università di Bologna, Via Gobetti 85, 40129 Bologna, Italy
Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, 116023 Dalian, China
Funding
European Commission · Ministero dell'Università e della Ricerca
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