Publications by Magalí Alejandra Lingenfelder

Operando evidence on the chirality-enhanced oxygen evolution reaction in intrinsically chiral electrocatalysts

Magalí Alejandra Lingenfelder, Yunchang Liang

Electrolytic hydrogen is identified as a crucial component in the desired decarbonisation of the chemical industry, utilizing renewable energy to split water into hydrogen and oxygen. Water electrolysis still requires important scientific advances to impro ...

ROYAL SOC CHEMISTRY2025

Operando Nanoscale Characterization Reveals Fe Doping of Ni Oxide Enhances Oxygen Evolution Reaction via Fragmentation and Formation of Dual Active Sites

Magalí Alejandra Lingenfelder, Xile Hu, Karla Banjac, Seunghwa Lee, Yunchang Liang, Victor Carle Adrien Boureau

Efficient catalytic water splitting demands advanced catalysts to improve the slow kinetics of the oxygen evolution reaction (OER). Earth-abundant transition metal oxides show promising OER activity in alkaline media. However, most experimental information ...

2025

Synergistic enhancement of photo-assisted water splitting by mesoporous TiO2/NiFe LDH composite nanomaterials

Magalí Alejandra Lingenfelder, Yunchang Liang

In the last decade, photo-assisted water splitting to generate hydrogen and oxygen has become a key process in the quest for clean energy technologies. In this context, the sluggish kinetics of the oxygen evolution reaction (OER) is still a limitation. The ...

Pergamon-Elsevier Science Ltd2024

Rational Design of 2D Supramolecular Networks Switchable by External Electric Fields

Magalí Alejandra Lingenfelder, Fernando Pablo Cometto

The reversible formation of hydrogen bonds is a ubiquitous mechanism for controlling molecular assembly in biological systems. However, achieving predictable reversibility in artificial two-dimensional (2D) materials remains a significant challenge. Here, ...

Amer Chemical Soc2024

Hybrid mesoporous electrodes evidence CISS effect on water oxidation

Magalí Alejandra Lingenfelder, Yunchang Liang

Controlling product selectivity is essential for improving the efficiency of multi-product reactions. Electrochemical water oxidation is a reaction of main importance in different applications, e.g., renewable energy schemes and environmental protection, w ...

Aip Publishing2024

Enhancement of electrocatalysis through magnetic field effects on mass transport

Jean-Philippe Ansermet, Magalí Alejandra Lingenfelder, Yunchang Liang

Magnetic field effects on electrocatalysis have recently gained attention due to the substantial enhancement of the oxygen evolution reaction (OER) on ferromagnetic catalysts. When detecting an enhanced catalytic activity, the effect of magnetic fields on ...

Nature Portfolio2024

Enhancement of electrocatalytic oxygen evolution by chiral molecular functionalization of hybrid 2D electrodes

Magalí Alejandra Lingenfelder, Xile Hu, Karla Banjac, Seunghwa Lee, Yunchang Liang

While solar-to-fuel catalysis requires the careful transfer of electrons, there are still challenges understanding how electron spin contributes to reactivity. Here, authors employ chiral fused thiadiazole-helicenes to control spin polarization in oxygen e ...

Nature Portfolio2022

Spin-Control in Electrocatalysis for Clean Energy

Magalí Alejandra Lingenfelder, Martina Lihter, Yunchang Liang

A sustainable future demands a successful transition from a carbon energy-dependent economy towards renewable energy schemes, many of which ultimately rely on the development of efficient electrocatalysis that either converts chemical energy into electrici ...

2022

Structural Order of the Molecular Adlayer Impacts the Stability of Nanoparticle-on-Mirror Plasmonic Cavities

Magalí Alejandra Lingenfelder, Christophe Marcel Georges Galland, Fernando Pablo Cometto, Karla Banjac, Aqeel Ahmed, Sachin Suresh Verlekar

Immense field enhancement and nanoscale confinement of light are possible within nanoparticle-on-mirror (NPoM) plasmonic resonators, which enable novel optically activated physical and chemical phenomena and render these nanocavities greatly sensitive to m ...

AMER CHEMICAL SOC2021

Stabilization of high-spin Mn ions in tetra-pyrrolic configuration on copper

Magalí Alejandra Lingenfelder

By means of Mn-Cu transmetalation, we incorporated Mn atoms in an array of TCNQ (7,7,8,8-tetracyanoquinodimethane) grown on Cu(100), forming a long range ordered and commensurate metal-organic coordination network (MOCN). Preliminary Sn alloying of the Cu( ...

ELSEVIER2021

Intrinsic luminescence blinking from plasmonic nanojunctions

Magalí Alejandra Lingenfelder, Christophe Marcel Georges Galland, Tobias Kippenberg, Philippe Andreas Rölli, Giulia Tagliabue, Karla Banjac, Aqeel Ahmed, Wen Chen, Sachin Suresh Verlekar

Plasmonic nanojunctions, consisting of adjacent metal structures with nanometre gaps, can support localised plasmon resonances that boost light matter interactions and concentrate electromagnetic fields at the nanoscale. In this regime, the optical respons ...

Nature Research2021

Nanopatterned antimicrobial surfaces

Magalí Alejandra Lingenfelder

The invention relates to an antimicrobial surface comprising a first array of nano/micro structures spaced apart on a support, characterized in that it comprises a second array of spaced apart nanostructures located on said support and on said first array ...

2021

Super-resolved Optical Mapping of Reactive Sulfur-Vacancies in Two-Dimensional Transition Metal Dichalcogenides

Andras Kis, Aleksandra Radenovic, Magalí Alejandra Lingenfelder, Jean Camille Benjamin Comtet, Martina Lihter, Yanfei Zhao, Michal Daniel Macha, Karla Banjac, Jing Zhang, Zhenyu Wang, Miao Zhang, Tzu-Heng Chen

Transition metal dichalcogenides (TMDs) represent a class of semiconducting two-dimensional (2D) materials with exciting properties. In particular, defects in 2D-TMDs and their molecular interactions with the environment can crucially affect their physical ...

AMER CHEMICAL SOC2021

Emergence of Potential-Controlled Cu-Nanocuboids and Graphene-Covered Cu-Nanocuboids under Operando CO2 Electroreduction

Magalí Alejandra Lingenfelder, Fernando Pablo Cometto, Karla Banjac, Thanh Hai Phan

The electroreduction of CO2 (CO2RR) is a promising strategy toward sustainable fuels. Cu is the only Earth-abundant and pure metal capable of catalyzing CO2-to-hydrocarbons conversion with significant Faradaic efficiencies; yet, its dynamic structure under ...

AMER CHEMICAL SOC2021

Catalyst Proximity-Induced Functionalization of h-BN with Quat Derivatives

Magalí Alejandra Lingenfelder, Bart Willem Stel, Gabriele Tocci, Huanyao Cun

Inert single-layer boron nitride (h-BN) grown on a catalytic metal may be functionalized with quaternary ammonium compounds (quats) that are widely used as nonreactive electrolytes. We observe that the quat treatment, which facilitates the electrochemical ...

2019

Oxygen Isotope Labeling Experiments Reveal Different Reaction Sites for the Oxygen Evolution Reaction on Nickel and Nickel Iron Oxides

Magalí Alejandra Lingenfelder, Xile Hu, Karla Banjac, Seunghwa Lee

Nickel iron oxide is considered a benchmark nonprecious catalyst for the oxygen evolution reaction (OER). However, the nature of the active site in nickel iron oxide is heavily debated. Here we report direct spectroscopic evidence for the different active ...

Wiley-VCH Verlag GmbH2019

Building two-dimensional metal-organic networks with tin

Magalí Alejandra Lingenfelder

We show that Sn atoms combined with organic ligands can be used to build 2D coordination networks on Au(111) surfaces. ...

Royal Society of Chemistry2019

BioNanoarchitectonics and the dynamics of alive functional surfaces

Magalí Alejandra Lingenfelder

AMER CHEMICAL SOC2019

Reactivity of Bioinspired Magnesium-Organic Networks under CO2 and O-2 Exposure

Klaus Kern, Magalí Alejandra Lingenfelder, Bart Willem Stel, Fernando Pablo Cometto, Daniel Eduardo Hurtado Salinas

Photosynthesis is the model system for energy conversion. It uses CO2 as a starting reactant to convert solar energy into chemical energy, i.e., organic molecules or biomass. The first and rate-determining step of this cycle is the immobilization and activ ...

2019

2-D assembly of supramolecular nanoarchitectures on Mg(0001)

Klaus Kern, Magalí Alejandra Lingenfelder, Bart Willem Stel, Fernando Pablo Cometto, Daniel Eduardo Hurtado Salinas

In this work, a Mg(0001) single crystal is used as a novel template to grow 2D supramolecular nano-architectures. By using scanning tunnelling microscopy (STM) and high-resolution X-ray photoemission spectroscopy (HR-XPS), the formation of either a homo-mo ...

Royal Society of Chemistry2019