Oxygen reduction at soft interfaces catalyzed by in situ-generated reduced graphene oxide

peer-reviewedFace to face: Flakes of reduced graphene oxide, synthesized in situ at the liquid/liquid interface from a graphene‐oxide precursor, are capable of catalyzing the biphasic reduction of protons to hydrogen peroxide in the presence of molecular oxygen and an organic solubilized electron donor. This offers a new perspective for the bulk production of a green oxidant through biphasic electrolysisACCEPTEDpeer-reviewe

Digitalization of the construction industry of the Republic of Belarus as a major factor of growth of its competitiveness

Приведены направления и перспективы использования цифровых технологий в строительной отрасли, занимающей значимое место в структуре экономики Республики Беларусь на современном этапе развития. Цифровизация в строительной отрасли является драйвером инновационных преобразований, ускоряя внедрение технологических инноваций и сокращая длительность инновационного процесса. Основной акцент сделан на обобщение данных и систематизацию основных направлений применения цифровых технологий в строительной отрасли.The article presents the directions and prospects of using digital technologies in the construction industry, which occupies a significant place in the structure of the economy of the Republic of Belarus at the present stage of development. Digitalization in the construction industry is a driver of innovative transformations, accelerating the introduction of technological innovations and reducing the duration of the innovation process. The main emphasis is placed on the synthesis of data and systematization of the main areas of application of digital technologies in the construction industry

Rapid optimisation of a lactate biosensor design using soft probes scanning electrochemical microscopy

We report the mapping of biocatalytically active surfaces, particularly on an express search for optimal immobilization conditions of the enzyme lactate oxidase by means of scanning electrochemical microscopy (SECM). With this aim, soft stylus SECM probes containing a carbon paste ultramicroelectrode were modified with Prussian Blue yielding reproducible hydrogen peroxide (H2O2) sensors with a sensitivity of 1.6 ± 0.5 A·M–1·cm–2 for screening applications. The ultramicroelectrode response was stable under harsh conditions of 1 mM H2O2 during the first hour, while the response decay during the second hour was less than 4 % providing sensor suitability for long-term experiments. SECM imaging in contact mode of different lactate oxidase spots containing membranes allowed for a straightforward optimization of the enzyme immobilization conditions on rough screen-printed carbon paste substrates. The resulting lactate biosensor was characterized by improved analytical performance characteristics: a four times enhanced sensitivity (up to 0.3 A·M–1·cm–2) in comparison to previous reports and a remarkably increased operational stability

Current-Free Deposition of Prussian Blue with Organic Polymers: Towards Improved Stability and Mass Production of the Advanced Hydrogen Peroxide Transducer

International audienc

Corrosion protection of steel by electropolymerized lignins

Electropolymerization of water soluble lignin derivatives (lignosulfonates) on steel surface is reported. It was noticed from both an appearance of anodic current of lignin oxidation and a subsequent considerable decrease in current at high anodic potentials, and confirmed by the knowledge of lignin oxidative polymerization. Ionic strength affects a potential of lignin oxidation: an increase of KCl concentration ten times (from 0.1 to 1 M) causes a decrease in oxidation potential for 1 V. Lignosulfonate electropolymerization is resulted in corrosion protection of carbon steel, which was more effective compared to the standard commercially available corrosion inhibitor COREXIT SXT-1003. Keywords: Lignosulfonate, Electropolymerization, Carbon steel, Corrosion protectio