Concept

Élément-trace métallique

Publications associées (523)

Predicting the reflectivity and colour of metals from first principles

Gold and copper are the only two elemental metals that show a characteristic colour, due to the presence of a drop in the reflectivity curve inside the visible range. Reflectivities of all other metals are in general high and flat for all visible frequenci ...

EPFL2019

Inkjet printing and electrocatalysis

Victor Costa Bassetto

The transition in energy matrix, from fossil to renewable energy sources, will require the utilization of grid levelling alternatives to cope with the intermittent characteristic of renewable energy. Advanced electrochemical energy conversion and storage d ...

EPFL2019

Discovery of a Highly Active Catalyst for Hydrogenolysis of C-O Bonds via Systematic, Multi-metallic Catalyst Screening

Paul Joseph Dyson, Antoine Philippe Van Muyden, Ning Yan, Sviatlana Siankevich

Hydrogenolysis of C-O bonds is a highly challenging reaction with the most efficient catalysts based on bimetallic assemblies. Systematic studies to identify the optimum metal combination have not been performed and, therefore, we designed a method to scre ...

2019

1D Amorphous Tungsten-Based Ternary Refractory Metal Sulfides for Catalytic Hydrogen Evolution at Soft Interfaces

Hubert Girault

Transition metals incorporated into molybdenum sulfide and tungsten sulfide matrixes are promising candidates for hydrogen evolution due to the unique chemical and physical properties. Here, we first describe a general strategy for the synthesis of rod-lik ...

WILEY-V C H VERLAG GMBH2019

Spin-valley optoelectronics based on two-dimensional materials

Dmitrii Unuchek

Two-dimensional (2D) materials, in particular graphene and transition metal dichalcogenides (TMDC), have attracted great scientific interest over the last decade, revealing exceptional mechanical, electrical and optical properties. Owing to their layered n ...

EPFL2019

Method for synthesis of a metal organic framework composite

Wendy Lee Queen, Daniel Teav Sun, Shuliang Yang, Li Peng

The present invention relates to a method for synthesis of a metal organic framework composite comprising the folowing steps: a) Synthesize a metal organic framework; b) Make a polymer grow on said metal organic framework, said polymer being chosen among p ...

2019

Dissolved Organic Matter and Associated Trace Metal Dynamics from River to Lake, Under Ice-Covered and Ice-Free Conditions

Natacha Tofield-Pasche, Hannah Elisa Chmiel

The present study investigates the changes in dissolved organic matter (DOM) composition and its influences on trace metal dispersion from the Shuya River (SR) in the Petrozavodsk Bay of Lake Onega during ice covered and ice-free periods. Humic substances ...

2019

Ni3N as an Active Hydrogen Oxidation Reaction Catalyst in Alkaline Medium

Xile Hu, Andreas Schueler, Anna Krammer, Josef Andreas Schuler, Weiyan Ni

Hydroxide-exchange membrane fuel cells can potentially utilize platinum-group-metal (PGM)-free electrocatalysts, offering cost and scalability advantages over more developed proton-exchange membrane fuel cells. However, there is a lack of non-precious elec ...

2019

Cascaded amplifying circuits enable ultrasensitive cellular sensors for toxic metals

Sebastian Maerkl, Francesca Volpetti, Ekaterina Emilova Petrova

Cell-based biosensors have great potential to detect various toxic and pathogenic contaminants in aqueous environments. However, frequently they cannot meet practical requirements due to insufficient sensing performance. To address this issue, we investiga ...

NATURE PUBLISHING GROUP2019

An Experimental Programme optimized with Uncertainty Propagation: PETALE in the CROCUS Reactor

Andreas Pautz, Vincent Pierre Lamirand, Dimitri Rochman, Axel Guy Marie Laureau

The PETALE experimental programme in the CROCUS reactor at EPFL intends to contribute to the validation and improvement of neutron nuclear data in the MeV energy range for stainless steel, particularly in the prospect of heavy reflector elements of pressur ...

EPJ Web of conference2019

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