A5033242257- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Catalytic Cross-Coupling Reactions
- Advanced Memory and Neural Computing
- Plasma Diagnostics and Applications
- Polymer crystallization and properties
- Analytical Chemistry and Chromatography
- Electrochemical sensors and biosensors
- Petroleum Processing and Analysis
- Advanced Battery Materials and Technologies
- Catalysis and Hydrodesulfurization Studies
- Ammonia Synthesis and Nitrogen Reduction
- Graphene research and applications
- Polymer Science and PVC
- Conducting polymers and applications
- Field-Flow Fractionation Techniques
- Covalent Organic Framework Applications
- Mesoporous Materials and Catalysis
- Luminescence Properties of Advanced Materials
- Asymmetric Hydrogenation and Catalysis
- Polymer Nanocomposites and Properties
- Electronic and Structural Properties of Oxides
ETH Zurich
2017-2024
Moscow Polytechnic University
2022
Institute of Solution Chemistry
2015
Francisk Skorina Gomel State University
2014
Graphitic carbon nitride (g‐C 3 N 4 ) exhibits unique properties as a support for single‐atom heterogeneous catalysts (SAHCs). Understanding how the synthesis method, carrier properties, and metal identity impact isolation of centers is essential to guide their design. This study compares effectiveness direct postsynthetic routes prepare SAHCs by incorporating palladium, silver, iridium, platinum, or gold in g‐C distinct morphology (bulk, mesoporous exfoliated). The speciation (single atoms,...
Abstract Carbon nitrides integrating macroheterocycles offer unique potential as hosts for stabilizing metal atoms due to their rich electronic structure. To date, only graphitic heptazine-based polymers have been studied. Here, we demonstrate that palladium can be effectively isolated on other carbon nitride scaffolds including linear melem oligomers and poly(triazine/heptazine imides). Increased uptake was linked the larger cavity size presence of chloride ions in polyimide structures....
Controlling the structure sensitivity of catalyzed reactions over metals is central to developing atom-efficient chemical processes. Approaching minimum ensemble size, properties enter a non-scalable regime in which each atom counts. Almost all trends this ultra-small frontier derive from surface science approaches using model systems, because both synthetic and analytical challenges. Exploiting unique coordination chemistry carbon nitride, we discriminate through experiments simulations...
The C/N ratio of the carbon nitride lattice is tailored by doping with to assess impact on stabilisation palladium atoms and their catalytic efficiency in selective hydrogenation 2-methyl-3-butyn-2-ol.
MXenes are 2D transition metal carbides, nitrides, and/or carbonitrides that can be intercalated with cations through chemical or electrochemical pathways. While the insertion of alkali and alkaline earth into Ti3C2Tx is well studied, understanding intercalation redox-active ions its impact on their electronic properties lacking. In this work, we investigate Cu MXene effect properties. Using X-ray absorption spectroscopy (XAS) ab initio molecular dynamics (AIMD), observe an unusual...
We report the promoting effect of graphitic carbon nitride in Cu-catalyzed N-arylation. The abundance pyridinic coordination sites this host permits adsorption copper iodide from reaction medium. key to achieving high activity is confine active Cu species on surface, which accomplished by introducing atomically dispersed metal dopants block diffusion into bulk carrier. alternative route incorporating during synthesis ineffective as thermodynamically more stable inactive subsurface positions....
Abstract Heterogene Einzelatom‐Katalysatoren (single‐atom heterogeneous catalysts, SACs) finden aufgrund ihrer maximalen Reaktivität pro Metallatom und der einfachen Wiederverwendbarkeit großen Anklang in akademischen Welt. Jedoch führt Weg von Nanopartikeln oder Metallclustern zu schließlich einzeln isolierten Atomen zwangsläufig Veränderungen Katalysatoren, da die physikalische Struktur aktiven Zentren verändert wird. Hier bewerten wir durch den Vergleich verschiedenster Anwendungen, ob...
Abstract Controlling the structure sensitivity of catalyzed reactions over metals is central to developing atom‐efficient chemical processes. Approaching minimum ensemble size, properties enter a non‐scalable regime in which each atom counts. Almost all trends this ultra‐small frontier derive from surface science approaches using model systems, because both synthetic and analytical challenges. Exploiting unique coordination chemistry carbon nitride, we discriminate through experiments...
In this Perspective, we sketch out a vision of fast charging and self-healable energy systems that are primarily organic, feature only abundant elements, operate with ions other than lithium. Using conductive oligomers as highly configurable building blocks, it is possible to create intrinsically adaptable polymeric networks can be rejuvenated recycled using simple safe chemical treatments. the versatile organic chemistry toolbox, these further functionalized, for example, redox-active side...
The adsorption of the anticoagulant warfarin onto unmodified (UMS) and modified (phenyl (PhMS), methyl (MMS), mercaptopropyl (MPMS)) mesoporous silica materials was studied at pH 1.6 7.4 in temperature range 293-325 K. were prepared by sol-gel method for further characterization FTIR spectroscopy, N2 adsorption/desorption method, transmission electron microscopy zeta potential measurements. effects medium pH, surface modification material on their characteristics (adsorption capacity,...
MXenes are 2D transition metal carbides, nitrides, and/or carbonitrides, capable of intercalation by various cations through chemical or electrochemical means. Previous research has primarily focused on intercalating alkaline and earth cations, such as Li+, K+, Na+, Mg2+ alkylammonium into Ti3C2Tx MXenes. However, the impact intercalated (TM) ions electronic properties remains largely unexplored. In this study, we investigated effects pre-intercalated Cu vice versa to gain a comprehensive...
In article number 1605785, Javier Pérez-Ramírez and co-workers investigate the synthesis of single-atom heterogeneous catalysts based on precious metals using graphitic carbon nitride as carrier. Advanced characterization simulations reveal impact carrier properties, metal identity method introduction speciation. Controlling metal-carrier interaction exposing reactive centers are key for maximizing potential these materials.
Oil refineries and other industrial enterprises generate a large amount of sewage contaminated with petroleum products. Sewage must be treated before it can discharged into water body. treatment methods often do not allow reducing the content products to maximum allowable values. This is because microheterogenous system characterized by variable composition high stability. It thus important study factors affecting aggregate stability as well development theoretical foundations for optimizing...