Comment transformer du CO₂ en sucres

Dans une étude publiée dans « Chemical Science » le 23 octobre, des chercheurs dévoilent la recette pour transformer des gaz nocifs en sucres. Une technique qui pourrait amener certaines productions v...

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Integration of a Ruthenium-based Alcohol Dehydrogenation Catalyst in an all-Molecular CO2 Electrolyzer

The electrification of chemical processes using renewable feedstocks and energy sources represents a key strategy toward a sustainable chemical industry. Coupling CO2 electroreduction (CO2RR) with ano...

doi.org

CO-to-Sugars Conversion from One-Pot Two-Step Electro-Organocatalytic Process

The conversion of C1 molecules (single-carbon species) into Cn products (carbon chains) is a key challenge for developing sustainable chemical feedstocks to replace fossil resources. Carbohydrates, a ...

doi.org

Molecular Catalyst Enables CO2 Electroreduction at 650 mA/cm2 CO Partial Current Density

The electrochemical reduction of CO2 to CO using renewable electricity offers a compelling pathway for greenhouse gas recycling. The two-electron, two-proton process is particularly attractive due to its operational simplicity and scalability, with copper- and silver-based nanomaterials being the most widely studied catalysts as the field approaches industrial maturity. However, achieving the necessary efficiency and stability for practical applications remains a significant challenge. Recently, molecular catalysts immobilized on conductive surfaces with carbon-based inks have emerged as highly tunable hybrid systems capable of remarkable selectivity. In this work, we report that a straightforward cobalt phthalocyanine complex, simply modified with a single trimethylammonium group, delivers outstanding CO2-to-CO conversion rates and selectivity, reaching a Faradaic efficiency of 93% at a total current density of 700 mA/cm2 (jCO = 650 mA/cm2) at neutral pH. Notably, CO selectivity above 90% was sustained for over 42 h at 150 mA/cm2, illustrating the potential of simply designed molecular catalysts for large-scale applications.

pubs.acs.org

Self‐Photosensitizing Cobalt Complexes for Photocatalytic CO2 Reduction Coupled with CH3OH Oxidation

Self-photosensitizing non-noble metal complexes achieve CO2 photoreduction coupled with CH3OH photooxidation, simultaneously synthesizing formic acid in the absence of any additional photosensitizers...

doi.org

Research Fellow - AR3123DD at University of St Andrews

Apply for the Research Fellow - AR3123DD role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.

jobs.ac.uk

Direct Synthesis of Polyesterether from Ethylene Glycol

We report here a method for making polyesterether from ethylene glycol. The reaction is catalyzed by a ruthenium complex and liberates H2 gas and H2O as byproducts. Mechanistic studies conducted throu...

pubs.acs.org

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Hybrid CIGS‐Cobalt Quaterpyridine Photocathode with Backside Illumination: a New Paradigm for Solar Fuel Production

Chalcogenide-based thin-film solar cell optimized for rear illumination and used for CO2 reduction is presented. Central to this innovation is a thinner, Cu(In,Ga)S2 chalcopyrite absorber coated with....

doi.org

Case studies of dimensionality in chemical data

The ambition to relate intrinsic features of chemical data to the underlying chemical reaction networks (CRNs) is not new, but has experienced only modest success. This may partly be attributed to a ...

chemistry-europe.onlinelibrary.wiley.com

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epfl.ch

Unlocking metal–ligand cooperative catalytic photochemical benzene carbonylation: a mechanistic approach

A key challenge in green synthesis is the catalytic transformation of renewable substrates at high atom and energy efficiency, with minimal energy input (ΔG ≈ 0). Non-thermal pathways, i.e., electroch...

pubs.rsc.org

Merging Electrocatalytic Alcohol Oxidation with C-N Bond Formation by Electrifying Metal-Ligand Coop...

Electrification of thermal chemical processes could play an important role in creating a more energy efficient chemical sector. Here we demonstrate that a range of MLC catalysts can be successfully el...

pubs.rsc.org