28/06/2019
The Human Resources Strategy for Researchers

PhD Student in Materials Chemistry (M / F)

This job offer has expired


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Chemistry
    Physics
    Technology
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    19/07/2019 23:59 - Europe/Brussels
  • LOCATION
    France › ORLEANS
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/10/2019

The CEMHTI laboratory is affiliated to the CNRS and is composed of 2 sites (high temperature and cyclotron sites) regrouping about 100 people.
The laboratory develops original expertise and tools on a national and international level to study in situ the physico-chemical properties of materials under extreme conditions.

The doctoral student will be based on the laboratory's high temperature site, will integrate the “Materials and Resonance” group under the supervision of Pr. Michael Deschamps and Dr. Vincent Sarou-Kanian

The CEMHTI laboratory has 6 NMR spectrometers from 200 to 850 MHz, equipped with MAS probes and imaging devices. The thesis has public funding and the project is carried out in partnership with CEMHTI and RS2E (French research network on electrochemical energy storage) research groups for the supply of study materials.

Study on liquid/solid interactions in porous materials by Nuclear Magnetic Resonance

The interactions between the surface of a material and the ions of an electrolyte are of paramount importance for many scientific fields, such as batteries, fuel cells, catalysis, colloids, ceramics, geology... The main parameter describing these interactions is the zeta potential, which represents the electrical charge that a particle acquires through the surrounding ions in solution. The zeta potential measurement generally uses macroscopic measurements to determine this overall charge.
NMR spectroscopy provides information on the chemical environment of spin-bearing nuclei. In particular, the presence of internal magnetic field gradients at the solid-liquid interface makes it possible to discriminate the proximity of the ions near the surface, and by the same to specifically explore the ion-surface interactions, and to investigate the influence of the nature of the ion, the pH, the ionic strength of the solution, the surface condition... The understanding of these phenomena are extremely relevant: for example, the evolution of the electrochemical potential of a lithium battery electrode material may result in a modification of its surface properties and cause a preferential adsorption of cations or anions likely to change the dynamics of lithium exchange between the two phases.
The objective of the thesis is to explore the use of NMR for the characterization of ion-surface interactions, for several applications (batteries, photo-catalysis and biomaterials). The project involves the study of liquid-solid mixtures by conventional NMR spectroscopy, the development of a powder impregnation system and the use of imaging sequences (MRI) to study the impregnation of systems.
The CEMHTI laboratory has 6 NMR spectrometers from 200 to 850 MHz, equipped with MAS probes and imaging devices. The thesis has public funding and the project is carried out in partnership with CEMHTI and RS2E (French research network on electrochemical energy storage) research groups for the supply of study materials

Additional comments

The candidate must have a Master's degree in Chemistry, Physics or Materials Science. An NMR experience is recommended for applying, and good interpersonal and good writing and communication skills are required.

Application deadline set for 21/07/2019

Web site for additional job details

Required Research Experiences

  • RESEARCH FIELD
    Chemistry
  • YEARS OF RESEARCH EXPERIENCE
    None
  • RESEARCH FIELD
    Physics
  • YEARS OF RESEARCH EXPERIENCE
    None
  • RESEARCH FIELD
    Technology
  • YEARS OF RESEARCH EXPERIENCE
    None

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Chemistry: Master Degree or equivalent
    Physics: Master Degree or equivalent
    Technology: Master Degree or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic
Work location(s)
1 position(s) available at
Conditions Extrêmes et Matériaux : Haute température et Irradiation
France
ORLEANS

EURAXESS offer ID: 422414
Posting organisation offer ID: 9741

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