A5100684239- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Electrohydrodynamics and Fluid Dynamics
- Molecular Junctions and Nanostructures
- 2D Materials and Applications
- Advanced battery technologies research
- Chemical Reactions and Mechanisms
- Luminescence Properties of Advanced Materials
- Laser-Ablation Synthesis of Nanoparticles
- MXene and MAX Phase Materials
- Advanced Chemical Physics Studies
- Fuel Cells and Related Materials
- Spectroscopy and Quantum Chemical Studies
Uppsala University
2018-2020
For the electrochemical hydrogen evolution reaction (HER), electrical properties of catalysts can play an important role in influencing overall catalytic activity. This is particularly for semiconducting HER such as MoS2 , which has been extensively studied over last decade. Herein, on-chip microreactors on two model catalysts, and semimetallic WTe2 are employed to extract effects individual factors study their relations with It shown that electron injection at catalyst/current collector...
Abstract Using the MoS 2 ‐WTe heterostructure as a model system combined with electrochemical microreactors and density function theory calculations, it is shown that heterostructured contacts enhance hydrogen evolution reaction (HER) activity of monolayer . Two possible mechanisms are suggested to explain this enhancement: efficient charge injection through large‐area heterojunctions between WTe effective screening mirror charges due semimetallic nature The dielectric effect proven minor,...
Abstract The effect of intermolecular H‐bonding interactions on the local electronic structure N‐containing functional groups (amino group and pyridine‐like N) that are characteristic polymeric carbon nitride materials p‐CN(H), a new class metal‐free organophotocatalysts, was investigated. Specifically, melamine molecule, building block characterized by X‐ray photoelectron (XPS) near edge absorption fine (NEXAFS) spectroscopy. molecule studied as noninteracting system in gas phase solid...
Hydrated electrons are important in radiation chemistry and charge-transfer reactions, with applications that include chemical damage of DNA, catalysis, signaling. Conventionally, hydrated produced by pulsed radiolysis, sonolysis, two-ultraviolet-photon laser excitation liquid water, or photodetachment suitable electron donors. Here we report a method for the generation via single-visible-photon localized surface plasmon resonances (LSPRs) supported sub-3 nm copper nanoparticles contact...
Recent experiments have highlighted the efficiency of nonprecious metal-based hybrid structures, such as g-C3N4/MoS2 and g-C3N4/graphene for hydrogen evolution reaction (HER). This work focuses on interface effects heterostructures that could lead to enhanced catalytic activity g-C3N4. We concentrated electrocatalysts with architecture g-C3N4/X (X = WTe2, MoS2, graphene), where plays an important role in overall HER. These promising candidates been assessed using three main factors extracted...
Recent advances in operando-synchrotron-based X-ray techniques are making it possible to address fundamental questions related complex proton-coupled electron transfer reactions, for instance, the electrocatalytic water splitting process. However, is still a grand challenge assess ability of different characterize relevant intermediates, with minimal interference on reaction mechanism. To this end, we have developed novel methodology employing photoelectron spectroscopy (XPS) connection...