To design the ideal water oxidation catalyst, understanding of the catalytic mechanism and decomposition pathways is essential.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

In this dissertation, the synthesis and characterization of a series of iron complexes based on different ligand platforms are described.

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.

Promotor: M.T.M. Koper, Co-Promotor: F. Calle-Vallejo

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

Promotor: J.W.M. Frenken Co-Promotores: I.M.N. Groot; L.B.F. Juurlink

Promotor: E. Bouwman, Co-promotor: S. Bonnet

As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.

Oxidation is a common degradation pathway that affects therapeutic proteins and peptides during production, purification, formulation, transportation, storage and handling of solid and liquid preparations. In the present work we review the scientific literature about structural and biological consequences…

Promotor: J.W.M. Frenken, Co-Promotor: R. Felici

Can we enhance the capacity of host immune cells to kill mycobacteria via production of reactive nitrogen species?

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

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

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

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

Koper

How do societies move forward with sustainable, effective and efficient management of Earth's water resources?

Leiden University is committed to reducing our water consumption.

On 27 January 2022 Tjahjono Prasodjo successfully defended a doctoral thesis and graduated.

PhD defence

This thesis explores interfacial conductance and electric field-effects in LaAlO3/SrTiO3 heterostructures.

Water is all around us and is vital for all aspects of life. Studying the various compounds and life forms that inhabit natural waters lets us better understand the world around us.

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

The International Course on Water Use and Management in Cagayan Valley The Philippines (2011-2015)

Human activity, such as pollution, may disturb the balance of living water systems, which has consequences for biodiversity, but also for other functions such as water purification. Leiden University maps living water systems using the most advanced technologies.

Twenty years from now, the world population is estimated to be around 8.7 billion people, compared to the current 7.3 billion. In combination with the improvements in living standards and the corresponding growth in consumption, this will result in an enormous increase in the demand for food, consumables,…

The focus of the described research in this thesis is on the oxidative stress response (Nrf2 pathway). The aim of the research presented in this thesis is to obtain more information concerning microRNAs which are involved in the Nrf2 pathway, to determine and evaluate the application of microRNAs for…

This project investigates ancient water management of streams, springs and runoffs on the archaeological site of Monte Albán, Mexico, as a means to contribute with different stakeholders in the development of sustainable solutions to water problems today such as floods and scarcity.

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

Improving environmental risk assessment of pesticides in surface waters

Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda

Promotores: T. Hankemeier; R. Berger, Co-promotor: R.J. Vreeken

PhD defence

PhD defence

PhD defence

While ecosystems have concrete benefits for human society, these benefits are typically overlooked in decision-making.

Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.

This thesis examines the impacts and challenges of water use of electric power system. This thesis found that there are large differences in water use of electricity technologies, with hydropower and thermal power being two large water users.

How does CO adsorption on gold promote its own oxidation and the oxidation of other organic molecules?

Amerindian intra- and inter-insular relationships and social organization in the pre-colonial Windward Islands.

The main research theme in the group of Dennis Hetterscheid is to understand and mimic bioinorganic multi-electron processes that are relevant to our future energy infrastructure. Reduction of protons generates hydrogen that can be used as a chemical fuel. Alternatively to gaseous hydrogen, the reduction…

How does the vision of problems and solutions from

Marc Koper’s research focuses on electrocatalysis and electrochemical surface science for sustainable energy and chemistry. Reactions of interest are the redox reactions of the oxygen/hydrogen cycle (water oxidation, hydrogen evolution), the carbon cycle (reduction of carbon dioxide, oxidation of small…