PhD Candidate for the Project “Moving Animals: A History of Science, Media and Policy in the Twentieth Century””
Ongeveer 5 uur geleden - Universiteit Maastricht - Maastricht
The two PhD positions are available immediately at the Leiden Institute of Chemistry in the group of Dr. Gregory Schneider and the group of Professor Huub de …
The two PhD positions are available immediately at the Leiden Institute of Chemistry in the group of Dr. Gregory Schneider and the group of Professor Huub de Groot, Dr. Francesco Buda and Dr. Agur Sevink. The purpose of this project is to design a functionalized nanoporous polyaromatic monolayer membrane (2D-NPA), based on ubiquitous elements (mainly carbon and nitrogen), for important widespread applications such as membrane filters, catalysis, fuel cells and integration into artificial photosynthesis devices. The research will focus on two main aspects:
I. Functionalized polyaromatic hydrocarbons (PAHs) synthesis and bottom-up preparation of functionalized porous monolayer membrane with known catalysts for multi electron water oxidation. The properties of the 2D-NPA membrane will be tailored for the target applications by modifying the chemical structure of the PAHs and membrane preparation conditions. Selected catalyst motifs will be added to the membrane. Initial characterization will be performed with cyclic voltammetry.
II. Evaluation of membrane selectivity and ion-flux as a function of membrane design and operating conditions (ion concentration/gradients), as well as membrane stability. NMR studies will be performed in operando or on model compounds with catalysts to determine the chemical environment for operation as a redox mediator in multi-electron catalysis for artificial photosynthesis. This will be followed by in silico characterization of the reaction coordinate of the functionalized 2D-NPA for water oxidation catalysis and determine how the performance can be optimized with respect to turnover frequency in mild solvent environments. Modern computational techniques (mainly ab-initio and classical molecular dynamics) will be used to fundamentally study the catalytic activity and permeability/stability of the 2D membrane.
Moreover, the performance of 2D-NPA in a device will be tested by including this new component in a setup for solar to fuel conversion that is currently under development within a collaboration with an SME, Hydron Energy, which is financed from different sources.
The project will benefit from highly multidisciplinary collaborations, with close links to experts in many different relevant areas, including organic synthesis, ion/mass transport through 2D membranes, (reverse) osmosis, nanofabrication, electron microscopy, material growth, surface chemistry, supramolecular chemistry, quantum chemistry, quantum physics, electrical engineering, surface analysis, probe microscopies, but also industries.
We offer a position for initially one year. After a positive evaluation of the progress of the thesis, personal capabilities and compatibility the appointment will be extended by a further three years. Salary range from €2,222 to €2,840 gross per month (pay scale P in accordance with the Collective Labour Agreement for Dutch Universities).
Leiden University offers an attractive benefits package with additional holiday (8%) and end-of-year bonuses (8.3 %), training and career development and sabbatical leave. Our individual choices model gives you some freedom to assemble your own set of terms and conditions. For international spouses we have set up a dual career programme. Candidates from outside the Netherlands may be eligible for a substantial tax break. More at https://www.universiteitleiden.nl/en/working-at/job-application-procedure-and-employment-conditions.
All our PhD students are embedded in the Leiden University Graduate School of Science. Our graduate school offers several PhD training courses at three levels: professional courses, skills training and personal effectiveness. In addition, advanced courses to deepen scientific knowledge are offered by the research school.
Leiden University is strongly committed to diversity within its community and especially welcomes applications from members of underrepresented groups.
Enquiries can be made to:
I) PhD position #I, synthesis: Grégory Schneider, email firstname.lastname@example.org;
II) PhD position #II, computational chemistry: Francesco Buda, email email@example.com.
If you have any questions about the procedure, please contact secretary Mrs. Michelle van der Haar, email firstname.lastname@example.org, telephone +31 71 527 4292.
To apply for vacancy #I, please send no later than 22 July 2018 an email to the secretary of the Supramolecular and Biomaterials Chemistry group, Mrs. Michelle van der Haar at email@example.com.
To apply for vacancy #II, please send no later than 22 July 2018 an email to the secretary of the Biophysical Organic Chemistry group, Mrs. Liesbeth van der Veldenat firstname.lastname@example.org.
Please ensure that you join to your application the vacancy number and the following additional documents: