Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

Dissociative chemisorption is an important reaction step in many catalytic reactions.

Promotor: G. J. Kroes

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.

De ontwikkeling en implementatie van een schaalbare, veilige en geïntegreerde infrastructuur van waterstof te bevorderen ter ondersteuning van de energietransitie.

The goal of this thesis is to understand how interfacial parameters, such as the addition of organic additives, bulk pH or metal cations of the electrolyte, affect the relevant electrocatalytic reactions, i.e. electrochemical CO2 reduction reaction or hydrogen evolution reaction.

In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

Op 1 oktober 2019 verdedigde Emile Cammeraat zijn proefschrift 'Economic Effects of Social Protection'. Het promotieonderzoek is begeleid door promotoren prof.dr. K.P. Goudswaard en prof.dr. P.W.C. Koning.

In dit artikel bespreken Joachim Koops en Christian Patz de uitgebreide beoordeling van de Duitse gereedheid op het gebied van 'Protection of Civilians' (PoC).

Op 24 april verdedigde Feby Kartikasari het proefschrift 'Mining and environmental protection in Indonesia: regulatory pitfalls'. Het promotieonderzoek is begeleid door Adriaan Bedner en Bernardo Ribeiro de Almeida.

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.

Dit proefschrift behandelt de vraag of er een level playing field is tussen Europese beleggers die beleggen in EU-beleggingsinstellingen en Europese beleggers die beleggen in Amerikaanse beleggingsinstellingen en, als dit niet het geval is, of de Europese wetgever aanvullende regelgeving zou moeten…

Hoewel de Algemene Verordening Gegevensbescherming (AVG) vanaf mei 2018 de bescherming van persoonsgegevens in de hele EU harmoniseert, resulteren de open normen ervan in combinatie met culturele verschillen tussen landen in verschillen in de praktische implementatie, interpretatie en handhaving van…

Wat is een goede wetgeving inzake gegevensbescherming? Hoe kan een dergelijke wetgeving goed worden ontwikkeld? Is de Europese wetgeving hierover adequaat, en is deze toepasbaar in China?

Welke kansen en bedreigingen vloeien voort uit de institutionele en normatieve diversiteit op het terrein van de rechten van de mens voor de effectieve bescherming van die rechten in een wereld die gekenmerkt wordt door pluralisme?

Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.

Molecular complexes can be used as electrocatalysts for oxygen reduction, water oxidation, and/or hydrogen peroxide production.

Curved single crystals provide variable, but well-defined surface structures.

Op 15 februari 2018 gaf Simone van der Hof een keynote-lezing getiteld ‘Data Protection and Children’s Rights – the reasoning behind the protective provisions for children in the GDPR' op de conferentie van de International School of Amsterdam over Strategic marketing & communications for international…

Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.

Green hydrogen is produced via a process called water electrolysis. During electrolysis water is split into oxygen and hydrogen.

Op 7 mei 2020 verdedigde Jolanda van der Vliet proefschrift 'The International Legal Protection of Environmental Refugees. A human rights-based, security and State responsibility approach'. Het promotieonderzoek is begeleid door promotoren prof.dr. N.J. Schrijver en prof.dr.ir. J.J.C. Voorhoeve.

Supramolecular polymers are class of materials that are formed by non-covalent interactions such as hydrogen bonding, π-π interactions, electrostatic interactions and the hydrophobic effect.

Organic molecules in interstellar space are important as they influence the structure of galaxies and star formations. Studying catalytic processes in space allows us to understand how molecular species are formed and chemically evolved in the interstellar medium and solar system objects.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

Op 12 november verdedigde Clare Fenwick het proefschrift 'The political economy of immigration and welfare state reform: a collection of comparative political and economic essays on human mobility and social protection'. Het promotieonderzoek is begeleid door Olaf van Vliet en Kees Goudswaard.

In dit artikel onderzoekt Rutger Leukfeldt, bijzonder hoogleraar Governing Cybercrime, met collega's de relatie tussen PMT-factoren en zelfbeschermend onlinegedrag.

Op 12 september 2019 verdedigde Michiel Rhoen zijn proefschrift 'Big Data, Big Risks, Big Power Shifts: Evaluating the General Data Protection Regulation as an instrument of risk control and power redistribution in the context of big data'. Het promotieonderzoek is begeleid door promotoren prof.dr.mr.…

This thesis investigates the interplay between high-redshift quasars and the intergalactic medium (IGM) during the Epoch of Reionization (EoR). It combines new observations, systematic measurements, and forward modeling to constrain the physical state of hydrogen in the early Universe.

In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.

Photocatalysis has emerged as a powerful tool for enabling challenging transformations in organic synthesis. This thesis explores the development of several photocatalytic reactions designed to form carbon-heteroatom bonds from less-functionalized precursors.

The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.

This thesis explores squaramide-based supramolecular polymers and hydrogels, enhancing their mechanical strength for 3D cell culture.

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

Single-layer graphene (SLG) has attracted considerable interest as a proton exchange membrane for direct methanol fuel cells (DMFCs), owing to its atomic thickness, mechanical robustness, and unique proton permeability.

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.

Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.

The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.

Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.

Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.

The aromatic infrared bands (AIBs) seen throughout the interstellar medium (ISM) are generally thought to be carried by polycyclic aromatic hydrocarbons (PAHs) and their nitrogen analogues (PANHs).

Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.