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    Chemistry

    Angewandte Chemie Cover
    Journal of the American Chemical Society

    Hydrogen-containing substances are important for many industries, but scientists have struggled to obtain detailed images to understand the element's behavior. In Review of Scientific Instruments researchers demonstrate the quantification of hydrogen for different states of water—i.e., liquid, frozen and supercooled—for applications to eco-friendly fuel cells. [...]
    Tue, Oct 15, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    Angewandte Chemie International Edition From Bad Electrochemical Practices to an Environmental and Waste Reducing Approach for the Generation of Active Hydrogen Evolving Electrodes
    The use of a platinum counter electrode for the evaluation of non‐PGM based electrodes can be seen as bad electrochemical practice. Herein, it was done intentionally and this strategy turned out to be a zero‐waste‐approach for the generation of highly active and stable HER electrocatalysts. Abstract The electrodeposition of noble metals using corresponding dissolved metal salts represents an interesting process for the improvement of the electrocatalytic hydrogen evolution reaction (HER) properties of less active substrate materials. The fact that only a small fraction of the dissolved noble metals reaches the substrate represents a serious obstacle to this common procedure. We therefore chose a different path. It was found that the HER activity of Ni42 alloy drastically increased (η=140 mV at j=10 mA cm−2; pH 1) when a platinum counter electrode was used during polarization experiments in acid. This improvement was caused by a platinum transfer from the platinum anode to the steel cathode, a process which occurred simultaneously to the hydrogen evolution. The negligible accumulation of Pt (26 μg) in the electrolyte turns this straight‐forward transfer procedure into a highly cost‐effective, environmentally friendly, and waste reducing approach for the generation of cheap, stable and effective HER electrodes. [...]
    Tue, Oct 15, 2019
    Source: Angewandte Chemie Int. edition Category: CHEMISTRY GENERAL
    Some of the body's proteins are not just made up of amino acids, they are also 'decorated' with lipid chains, which significantly influence the biological functions of the protein. An example is the Ras protein, which plays a role in the development of many types of cancers and is only active and cancer-causing if it is able to bind to the cell membrane with the help of a 'lipid anchor.' [...]
    Tue, Oct 15, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    Chemists from have created a new material that self-assembles into 2-D networks in a predictable and reproducible manner. The material has a suite of new properties, which means it may have numerous applications—although it will take time and significant exploration to determine how it may best be used. [...]
    Tue, Oct 15, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    New research from North Carolina State University shows that unique materials with distinct properties akin to those of gecko feet—the ability to stick to just about any surface—can be created by harnessing liquid-driven chaos to produce soft polymer microparticles with hierarchical branching on the micro- and nanoscale. [...]
    Mon, Oct 14, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    Researchers at the University of Kentucky found that when aqueous solutions with pyruvic acid, a 2-oxocarboxylic acid, were exposed to light, the generated triplet excited state could efficiently convert dissolved molecular oxygen into highly singlet oxygen. This finding is expected to contribute to areas such as environmental, life, and medical sciences in the future. [...]
    Mon, Oct 14, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    Researchers at TU Delft have developed a new supercompressible but strong material without conducting any experimental tests at all, using only artificial intelligence (AI). "AI gives you a treasure map, and the scientist needs to find the treasure," says Miguel Bessa, first author of a publication on this subject in Advanced Materials on 14 October. [...]
    Mon, Oct 14, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    Discovered by researchers at Drexel University as electrodes for energy applications, MXenes have become a research focus for KAUST. Husam Alshareef and his team specialize in creating nanomaterials for electronic and energy applications. They turn them into devices, such as supercapacitors, batteries and sensors. The chemically active surface and highly conducting core of MXenes make them an ideal candidate material for the group's cutting-edge materials research. [...]
    Mon, Oct 14, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    A team of Empa acoustic researchers has built macroscopic crystal structures that use internal rotation to attenuate the propagation of waves. The method makes it possible to build very light and stiff materials that can also "swallow" low frequencies very well, as they report in the journal Nature Communications. [...]
    Mon, Oct 14, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL
    ETH spinoff FenX transforms industrial waste into a porous foam suitable for building insulation. Unlike other sustainable materials used for the purpose, this type of insulation is non-flammable and inexpensive to produce. [...]
    Fri, Oct 11, 2019
    Source: PhysOrg Chemistry Category: CHEMISTRY GENERAL

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