Fred Mosselmans


Fred Mosselmans is the Principal Beamline Scientist responsible for I20.

Tel: +44 (0) 1235 778568

Key Research Area

  • X-ray absorption spectroscopy
  • Environmental sciences

 I have been working in the field of X-ray absorption spectroscopy for more than 30 years. I mainly work in areas that could have the word geochemical in their title, but have interests in other fields as well. Recently I was lead investigator on the EPSRC grant that funded the building of the Diamond Active Materials Laboratory


Current Projects

I am currently involved in several projects using X-ray absorption and emission spectroscopy, notably:


  • With the University of Manchester and NNL on hte long term structural development of PuO2*
  • with UCL and St Andrews  on iron-zeolite based materials in catalytic fast pyrolysis**
  • with the University of Manchester using X-ray emission spectroscopy to study uranium in the environemnt
  • with the University of Southampton and ISIS to investigate thermoelctric materials.

* Project sponsored by EPSRC

**Project part sponsored by the CatHub

Selected Recent Publications

  1. Evolution of the Piauí Laterite, Brazil: Mineralogical, Geochemical and Geomicrobiological Mechanisms for Cobalt and Nickel Enrichment. A. Dybowska, P.F. Schofield, L. Newsome, R.J. Herrington, J.F.W. Mosselmans, B. Kaulich, M. Kazemian, T. Araki, T. J. Skiggs, J. Kruger, A. Oxley, R.A. Norman and J.R. Lloyd (2022) Minerals, DOI: 10.3390/min12101298
  2. In Situ EXAFS Study of Sr Adsorption on TiO2(110) under High Ionic Strength Wastewater Conditions. Arjen van Veelen, Paul C. M. Francisco, Nicholas P. Edwards, Julian Frederick W. Mosselmans,Tsutomu Sato and Roy A. Wogelius, (2021) Minerals  11, 386; DOI: 10.3390/min11121386
  3. Evaluation of cadmium and arsenic effects on wild and cultivated cardoon genotypes selected for metal phytoremediation and bioenergy purposes Chiara Leonardi, Valeria Toscano, Claudia Genovese, Julian Frederick Willem Mosselmans, Bryne Tendelo Ngwenya & Salvatore Antonino Raccuia (2021) Environmental Science and Pollution Research 10.1007/s11356-021-14705-9
  4. Role of plant growth promoting bacteria in driving speciation gradients across soil-rhizosphere-plant interfaces in zinc-contaminated soils. Nyekachi C Adele, Bryne T Ngwenya, Kate V Heal, J Frederick W Mosselmans (2021) Environmental Pollution 116909
  5. Organic complexation of U(VI) in reducing soils at a natural analogue site: Implications for uranium transport. Adam J. Fuller, Peter Leary, Neil D. Gray, Helena S. Davies, J. Frederick W. Mosselmans, Filipa Cox, Clare H. Robinson, Jon K. Pittman, Clare M. McCann, Michael Muir, Margaret C. Graham, Satoshi Utsunomiya, William R. Bower, Katherine Morris, Samuel Shaw, Pieter Bots, Francis R. Livens, Gareth T.W. Law (2020) Chemosphere DOI: 10.1016/j.chemosphere.2020.126859



Fred Mosselmans is Principal Beamline Scientist on the Versatile XAS beamline I20. His main scientific interests lie in the development and application of X-ray Absorption Spectroscopy, particularly with regard to Environmental Science research including the behaviour of radionuclides.

He regularly teaches courses on the analysis of XAFS data.

Fred did his first degree at the University of Cambridge and then a PhD at Southampton working for John Evans.  He undertook post-doctoral work at Southampton and then Manchester before joining the SRS Daresbury Laboratory where he worked as a beamline scientist for 11 years before joining Diamond, where he was Principal Beamline Scientist on the microfocus spectroscopy beamline I18 for 12 years before moving to the I20 beamline in 2018. He has over 200 scientific publications. He has been a visiting professor at the Univeristies of Kent and Manchester.


Diamond Light Source

Diamond Light Source is the UK's national synchrotron science facility, located at the Harwell Science and Innovation Campus in Oxfordshire.

Copyright © 2022 Diamond Light Source


Diamond Light Source Ltd
Diamond House
Harwell Science & Innovation Campus
OX11 0DE

See on Google Maps

Diamond Light Source® and the Diamond logo are registered trademarks of Diamond Light Source Ltd

Registered in England and Wales at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom. Company number: 4375679. VAT number: 287 461 957. Economic Operators Registration and Identification (EORI) number: GB287461957003.