Metal plating; Carbon dioxide; Electrochemistry; Electrocatalysis
Moreno-García Pavel, Kovács Noémi, Grozovski Vitali, Gálvez-Vázquez María de Jesús, Vesztergom Soma, Broekmann Peter (2020), Toward CO 2 Electroreduction under Controlled Mass Flow Conditions: A Combined Inverted RDE and Gas Chromatography Approach, in Analytical Chemistry
, 92(6), 4301-4308.
Dutta Abhijit, Montiel Iván Zelocualtecatl, Erni Rolf, Kiran Kiran, Rahaman Motiar, Drnec Jakub, Broekmann Peter (2020), Activation of bimetallic AgCu foam electrocatalysts for ethanol formation from CO2 by selective Cu oxidation/reduction, in Nano Energy
, 68, 104331-104331.
Gálvez-Vázquez María de Jesús, Grozovski Vitali, Kovács Noémi, Broekmann Peter, Vesztergom Soma (2020), Full Model for the Two-Step Polarization Curves of Hydrogen Evolution, Measured on RDEs in Dilute Acid Solutions, in The Journal of Physical Chemistry C
, 124(7), 3988-4000.
Moreno-García Pavel, Grozovski Vitali, Vázquez María de Jesús Gálve, Mysuru Nisarga, Kiran Kiran, Kovács Noémi, Hou Yuhui, Vesztergom Soma, Broekmann Peter (2020), Inverted RDE (iRDE) as Novel Test Bed for Studies on Additive-Assisted Metal Deposition under Gas-Evolution Conditions, in Journal of The Electrochemical Society
, 167(4), 042503-042503.
Gálvez-Vázquez María de Jesús, Alinejad Shima, Hu Huifang, Hou Yuhui, Moreno-García Pavel, Zana Alessandro, Wiberg Gustav K. H., Broekmann Peter, Arenz Matthias (2019), Testing a Silver Nanowire Catalyst for the Selective CO 2 Reduction in a Gas Diffusion Electrode Half-cell Setup Enabling High Mass Transport Conditions, in CHIMIA International Journal for Chemistry
, 73(11), 922-927.
Hou Yuhui, Bolat Sami, Bornet Aline, Romanyuk Yaroslav E., Guo Huizhang, Moreno-García Pavel, Zelocualtecatl Montiel Ivan, Lai Zhiqiang, Müller Ulrich, Grozovski Vitali, Broekmann Peter (2019), Photonic Curing: Activation and Stabilization of Metal Membrane Catalysts (MMCs) for the Electrochemical Reduction of CO 2, in ACS Catalysis
, 9(10), 9518-9529.
Dutta Abhijit, Bizzotto Francesco, Quinson Jonathan, Zana Alessandro, Morstein Carina Elisabeth, Rahaman Motiar A, López Alena Cedeño, Arenz Matthias, Broekmann Peter (2019), Catalyst Development for Water/CO 2 Co-electrolysis, in CHIMIA International Journal for Chemistry
, 73(9), 707-713.
Hou Yuhui, Erni Rolf, Widmer Roland, Rahaman Motiar, Guo Huizhang, Fasel Roman, Moreno‐García Pavel, Zhang Yucheng, Broekmann Peter (2019), Synthesis and Characterization of Degradation‐Resistant Cu@CuPd Nanowire Catalysts for the Efficient Production of Formate and CO from CO 2, in ChemElectroChem
, 6(12), 3189-3198.
Rudnev Alexander V., Kiran Kiran, Cedeño López Alena, Dutta Abhijit, Gjuroski Ilche, Furrer Julien, Broekmann Peter (2019), Enhanced electrocatalytic CO formation from CO2 on nanostructured silver foam electrodes in ionic liquid/water mixtures, in Electrochimica Acta
, 306, 245-253.
Gálvez‐Vázquez María de Jesús, Moreno‐García Pavel, Guo Huizhang, Hou Yuhui, Dutta Abhijit, Waldvogel Siegfried R., Broekmann Peter (2019), Leaded Bronze Alloy as a Catalyst for the Electroreduction of CO 2, in ChemElectroChem
, 6(8), 2324-2330.
Vasilyev Dmitry V., Rudnev Alexander V., Broekmann Peter, Dyson Paul J. (2019), A General and Facile Approach for the Electrochemical Reduction of Carbon Dioxide Inspired by Deep Eutectic Solvents, in ChemSusChem
, 12(8), 1635-1639.
Dutta Abhijit, Kuzume Akiyoshi, Kaliginedi Veerabhadrarao, Rahaman Motiar, Sinev Ilya, Ahmadi Mahdi, Roldán Cuenya Beatriz, Vesztergom Soma, Broekmann Peter (2018), Probing the chemical state of tin oxide NP catalysts during CO2 electroreduction: A complementary operando approach, in Nano Energy
, 53, 828-840.
Moreno-García Pavel, Schlegel Nicolas, Zanetti Alberto, Cedeño López Alena, Gálvez-Vázquez María de Jesús, Dutta Abhijit, Rahaman Motiar, Broekmann Peter (2018), Selective Electrochemical Reduction of CO 2 to CO on Zn-Based Foams Produced by Cu 2+ and Template-Assisted Electrodeposition, in ACS Applied Materials & Interfaces
, 10(37), 31355-31365.
Dutta Abhijit, Morstein Carina Elisabeth, Rahaman Motiar, Cedeño López Alena, Broekmann Peter (2018), Beyond Copper in CO 2 Electrolysis: Effective Hydrocarbon Production on Silver-Nanofoam Catalysts, in ACS Catalysis
, 8(9), 8357-8368.
Fu Yongchun, Ehrenburg Maria R., Broekmann Peter, Rudnev Alexander V. (2018), Surface Structure Sensitivity of CO 2 Electroreduction on Low-Index Gold Single Crystal Electrodes in Ionic Liquids, in ChemElectroChem
, 5(5), 748-752.
Rudnev Alexander V., Fu Yong-Chun, Gjuroski Ilche, Stricker Florian, Furrer Julien, Kovács Noémi, Vesztergom Soma, Broekmann Peter (2017), Transport Matters: Boosting CO 2 Electroreduction in Mixtures of [BMIm][BF 4 ]/Water by Enhanced Diffusion, in ChemPhysChem
, 18(22), 3153-3162.
Rahaman Motiar, Dutta Abhijit, Zanetti Alberto, Broekmann Peter (2017), Electrochemical Reduction of CO 2 into Multicarbon Alcohols on Activated Cu Mesh Catalysts: An Identical Location (IL) Study, in ACS Catalysis
, 7(11), 7946-7956.
Dutta Abhijit, Rahaman Motiar, Mohos Miklos, Zanetti Alberto, Broekmann Peter (2017), Electrochemical CO 2 Conversion Using Skeleton (Sponge) Type of Cu Catalysts, in ACS Catalysis
, 7(8), 5431-5437.
The proposed project entitled "CO2 to value: Electroconversion of CO2 on Electrodeposited Metal Foam Catalysts" aims to develop new catalysts concepts for the electrochemical conversion of CO2 into products of higher value (C-C coupled C2-4 products and formate) which have a high potential to be implemented into future industrial CO2 technology applications. New concepts of catalyst design will make use of an additive-assisted electroplating process which is highly versatile in terms of controlling the catalyst morphology on various length scales that are relevant for the creation of catalytically active sites (nm-scale) and the reactant/intermediate/product mass transport (µm-scale). The resulting product distribution of the electrochemical CO2 conversion is believed to be a result of the concerted effects taking place on these nm- and µm-length scales. The Cu- and Sn-based catalysts to be designed are highly porous metal foams whose composition and porosity can carefully be controlled by the experimental parameters. A key point in the catalyst design is the formation of well-defined oxide-phases on these metal foams during or after their electrodeposition. The most active catalysts are believed to be composites of these metal foam materials and their corresponding (surface) oxide-phases. The latter are typically consumed/degraded under conditions of the CO2 conversion. In this respect these materials are not catalysts in the classical sense which leave the catalytic cycle unchanged. Therefore we intend to develop so-called operando spectroscopies which are particularly sensitive to the presence of oxidic species (operando Raman approach). Their presence will be studied under reactive conditions as a function of the applied potential and the electrolyte composition. The key scientific working hypothesis to be proven is that the oxide phases are still present (and active for the CO2 conversion) even at electrode potentials where these are thermodynamically instable (kinetic stabilization). Such operando spectroscopies should further be used to develop strategies how these catalytically active oxide phases are either recovered (e.g. by anodization) or conserved under operando conditions (e.g. by diffusion-limited metal deposition superimposed on the CO2 conversion). These experimental approaches are meant to deepen our mechanistic understanding of the CO2 conversion process here particularly focusing on the potential-dependent chemical state of the highly porous catalyst. A further important goal of this project is to translate the functional metal foams that are selective towards certain CO2 reduction products onto 2D Cu mesh and/or 3D skeleton supports (excluded are any carbon supports). They allow for a more detailed study of the reactant/intermediate/product transport through the catalyst material. An important factor determining both the catalyst activity and the selectivity towards certain products is the mean residence time of the reactants/intermediates/products inside the catalyst. Kinetic data of the electrochemical CO2 conversion should therefore be collected under controlled mass transfer conditions (convection/diffusion) through the catalyst.