A5020436116- CO2 Reduction Techniques and Catalysts
- Catalytic Processes in Materials Science
- Electrocatalysts for Energy Conversion
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- Ionic liquids properties and applications
- Software Engineering Techniques and Practices
- Advanced battery technologies research
- Teaching and Learning Programming
- Electrochemical Analysis and Applications
- Gas Sensing Nanomaterials and Sensors
- Catalysis and Oxidation Reactions
- Carbon Dioxide Capture Technologies
- Software Reliability and Analysis Research
- Microbial Metabolic Engineering and Bioproduction
- Microbial Fuel Cells and Bioremediation
- Carbon dioxide utilization in catalysis
- Supercapacitor Materials and Fabrication
Paul Scherrer Institute
2021-2024
Birla Institute of Technology and Science, Pilani
2017
The large-scale deployment of polymer electrolyte water electrolysis (PEWE) is largely limited by the use O2 evolution reaction (OER) catalysts based on scarce and expensive iridium in PEWE anodes. ensuing need for better-performing, Ir-based OER requires an improved understanding relation between these materials' activity their physicochemical operando properties. To shed light this matter, here, we employed modulation excitation X-ray absorption spectroscopy to determine oxidation state...
The efficient scale-up of CO2-reduction technologies is a pivotal step to facilitate intermittent energy storage and for closing the carbon cycle. However, there need minimize occurrence undesirable side reactions like H2 evolution achieve selective production value-added products (CO HCOO–) at as-high-as-possible current densities. Employing novel electrocatalysts such as unsupported metal aerogels, which possess highly porous three-dimensional nanostructure, offers plausible approach...
Due to its unique ability reduce carbon dioxide (CO2) into CO or formate at high versus low overpotentials, respectively, palladium is a promising catalyst for the electrochemical CO2-reduction reaction (CO2RR). Further improvements aim increasing activity and selectivity toward either of these value-added species, while reducing amount hydrogen produced as side product. With this motivation, in work, we synthesized range unsupported, bimetallic PdPt aerogels pure Pt Pd extensively...
Palladium is an increasingly investigated electrocatalyst for the electrochemical reduction of carbon dioxide due to its unique ability yield monoxide or formate with large selectivities at high vs low overpotentials (i.e., ∼−0.5 ∼−1.0 ∼−0.1 ∼−0.4 V reversible hydrogen electrode), respectively. While this behavior has been described multiple times on different Pd-electrocatalysts, previous studies disagree regard palladium's form a hydride phase (PdHx) under CO2 reaction (CO2RR) conditions,...
In recent years, operando/in situ X-ray absorption spectroscopy (XAS) has become an important tool in the electrocatalysis community. However, high catalyst loadings often required to acquire XA-spectra with a satisfactory signal-to-noise ratio frequently imply use of thick layers (CLs) large ion- and mass-transport limitations. To shed light on impact this variable spectro-electrochemical results, study we investigate Pd-hydride formation carbon-supported Pd-nanoparticles (Pd/C) unsupported...
Over the past decades, electrochemical CO2-reduction reaction (CO2RR) has emerged as a promising option for facilitating intermittent energy storage while generating industrial raw materials of economic relevance such CO. Recent studies have reported that Au–Cu bimetallic nanocatalysts feature superior CO2-to-CO conversion compared with monometallic components, thus improving noble metal utilization. Under this premise and added advantage suppressed H2-evolution due to absence carbon...
The electrochemical reduction of carbon dioxide (CO 2 ) constitutes an increasingly important scientific topic and research on novel electrocatalysts for this demanding reaction is constantly increasing. One the most properties to be inferred such their product selectivity potential dependence thereof. However, wide range materials currently employed in CO electroreduction (e.g., Ag, Cu, Pd) entails a large variety gaseous and/or liquid products which accurate quantification implies major...
Despite its increased relevance for the ongoing energy transition, CO2-reduction reaction (CO2RR) continues to be poorly understood, particularly in context of how kinetics and product outcome are affected by surface-specific parameters such as interfacial pH. The latter has received attention lately, with numerous studies reporting impact on distribution CO2-electroreduction but failing quantify it reliably due defined mass transport properties electrochemical cells which most those were...
To drive the further development of electrochemical CO 2 reduction technologies, there is an urgent need for highly active catalysts that minimize unwanted side reactions and also possess a large specific surface area. While nanostructured typically fulfill latter requirement, they often use porous carbon supports improve nanoparticles’ dispersion but can shift product selectivity towards undesirable H formation. [1] This challenge could be solved by using unsupported aerogels consisting...
Abstract In recent years, operando/in situ X‐ray absorption spectroscopy (XAS) has become an important tool in the electrocatalysis community. However, high catalyst loadings often required to acquire XA‐spectra with a satisfactory signal‐to‐noise ratio frequently imply use of thick layers (CLs) large ion‐ and mass‐transport limitations. To shed light on impact this variable spectro‐electrochemical results, study we investigate Pd‐hydride formation carbon‐supported Pd‐nanoparticles (Pd/C)...
Due to its potential replace fossil fuels in chemical processes by converting carbon dioxide (CO 2 ) industrial base reactants, the electroreduction of CO is receiving tremendous attention. Among large number electrocatalysts currently under investigation for this reaction, palladium (Pd) increasingly appealing due ability produce both monoxide (CO) and formate at high selectivities depending on applied potential. This unique change selectivity between vs. low overpotentials (i.e., -0.5 -1.0...