Nicolas Dacheux

University Montpellier


ICSM/LIME (Bât. 426)
Site de Marcoule
BP 17171
F-30207 Bagnols-sur-Cèze Cedex
Tel: +33 4 66 33 92 05
Fax: +33 4 66 79 76 11
e-mail: nicolas.dacheux ad


Curriculum vitae

Since 2007ICSM/University Montpellier (Marcoule, France)
Professor in Radiochemistry – Physico-chemistry of Interfaces (CNU section 33)
1996 – 2007University Paris-Sud (Orsay, France)
Lecturer in Radiochemistry – Chemistry of Materials (CNU section 33)
1995 – 1996CEA/DAM (Bruyères le châtel, France)
Military scientist
1992 – 1995Institut de Physique Nucléaire d’Orsay (Orsay, France)
Ph.D. in Radiochemistry – University Paris-Sud-11 (France)


Skills and competences

  • Syntheses through wet and dry chemistry methods, and hydrothermal routes of inorganic precursors
  • Sintering of ceramic materials
  • Dissolution and leaching of ceramic materials (model nuclear fuels, matrices for specific conditionning)
  • Determination of thermodyanmic data associated with dissolution reactions and saturation processes
  • Techniques dealing with the characterization of materials (XRD, vibrational spectroscopies, SEM, TEM, EPMA) and elementary (ICP-AES, ICP-MS) or radiochemical (alpha or beta liquid scintillation, alpha, beta or gamma spectrometry) analyses in solution


Main responsabilities in Research and Teaching

  • Supervision or co-supervision of 18 PhD thesis
  • Head of "Partitionning chemistry, Materials and Process" speciality within Master of Chemistry at University Montpellier
  • Teaching in Bachelor, Professional Bachelor and Master grades at University Montpellier 2 , mainly in Radiochemistry, Chemistry at the ultra-trace level, Radioecotoxicology, Management of radwaste and Nuclear materials
  • Teaching in Radiochemistry/Radioactivity at University Paris-Sud (PCGE Master), Ecole Polytechnique Féminine (5A - ECD) and within the PETRUS European Network.


Since 2007Head of the Laboratory of Evolving Interfaces in Materials
Since 2009Advisory Editorial Board (AEB) member of Journal of Nuclear Materials
Since 2011Member of the governing board of "Institut International à l’Energie Nucléaire" (I2EN)
Since 2011Appointed member of CNU – section 33
Since 2012Member of the Scientific Council of the "Ressources" Federative Project within the NEEDS program (Nucléaire: énergie, environnement, déchets, société) CNRS/CEA/AREVA/CEA/EDF
Since 2013CNRS representative at TALISMAN European Network EXecutive COMittee and head of the "Training and Education" task
Since 2013Member of "Comité Thématique d’Etablissement" in chemistry at Université Montpellier
Since 2013Member of the Scientific Council of Ecole Nationale Supérieure de Chimie de Montpellier
Since 2009Organizer of 39èmes Journées des Actinides
Member of Local organinzing committes for 26th JIREC, EUROMAT 2011, Matériaux 2014
Organizer of various symposiums (EUROMAT 2011, EUROMAT 2013, MRS 2015)


Scientific production, Awards and Significant Publications (since 2008)

Author of 112 publications in international scientific peer-reviewed journals, 2 patents, 31 proceedings, 16 scientific popularization papers, 286 communications (oral and posters) and 9 invited conferences.

h-index : 26

Award-winner of Société Française à l’Energie Nucléaire (SFEN) Prize – Essonne (1995), of Yvan Peychès Grand Prix of Académie des Sciences (2001) and of Special promotion award of IN2P3 (CNRS, 2002)


20. "From thorite to coffinite : a spectroscopic study of Th1-xUxSiO4 solid solutions"
N. Clavier, S. Szenknect, D.T. Costin, A. Mesbah, C. Poinssot, N. Dacheux
Spectrochim. Acta. A 118, 302 – 307 (2014)

19. "Solubility properties of synthetic and natural meta-torbernite"
F. Cretaz, S. Szenknect, N. Clavier, P. Vitorge, A. Mesbah, M. Descotes, C. Poinssot, N. Dacheux
J. Nucl. Mater. 442, 195 – 207 (2013)

18. "From uranothorites to coffinite: a solid solution route to the thermodynamic properties of USiO4"
S. Szenknect, D.T. Costin, N. Clavier, A. Mesbah, C. Poinssot, P. Vitorge, N. Dacheux
Inorg. Chem. 52, 6957 – 6968 (2013)

17. "Monazite as a promising long-term radwaste matrix : benefits from high structural flexibility and chemical durability"
N. Dacheux, N. Clavier, R. Podor
Amer. Miner. 98, 833 – 847 (2013)

16. "Combining in situ HT-ESEM observations and dilatometry: an original and fast way to the sintering map of ThO2"
N. Clavier, R. Podor, L. Deliere, J. Ravaux, N. Dacheux
Mater. Chem. Phys. 137, 742 – 749 (2013)

15. "In situ HT-ESEM observation of CeO2 grain growth during sintering"
R. Podor, N. Clavier, J. Ravaux, N. Dacheux
J. Amer. Ceram. Soc. 95, 3683 – 3690 (2012)

14. "Catalytic dissolution of ceria under mild conditions"
M. Virot, T. Chave, D. Horlait, N. Clavier, N. Dacheux, J. Ravaux, S. I. Nikitenko
J. Mater. Chem. 22, 14734 – 14740 (2012)

13. "Kinetics of structural and microstructural changes at the solid/solution interface during dissolution of cerium(IV)-neodymium(III) oxides"
S. Szenknect, A. Mesbah, D. Horlait, N. Clavier, S. Dourdain, J. Ravaux, N. Dacheux
J. Phys. Chem. C 116, 12027 – 12037 (2012)

12. "Dissolution of cerium(IV)-lanthanide(III) oxides: comparative effects of composition, temperature and acidity"
D. Horlait, N. Clavier, S. Szenknect, N. Dacheux, V. Dubois
Inorg. Chem. 51, 3868 – 3878 (2012)

11. "Multiparametric dissolution of thorium-cerium dioxides solid solutions"
L. Claparede, N. Clavier, N. Dacheux, A. Mesbah, J. Martinez, S. Szenknect, P. Moisy
Inorg. Chem. 50, 11702 – 11714 (2011)

10. "Stability and structural evolution of Ce1-xLnxO2-x/2 solid solutions : a coupled µ-Raman / XRD approach"
D. Horlait, L. Claparede, N. Clavier, S. Szenknect, N. Dacheux, J. Ravaux, R. Podor
Inorg. Chem. 50, 7150 – 7161 (2011)

9. "Occurrence of an octanuclear motif of uranyl isophthalate with cation-cation interactions through edge-sharing connection mode"
I. Mihalcea, N. Henry, N. Clavier, N. Dacheux, T. Loiseau
Inorg. Chem. 50, 6243 – 6249 (2011)

8. "Crystal chemistry of the monazite structure"
N. Clavier, R. Podor, N. Dacheux
J. Eur. Ceram. Soc. 31, 941 – 976 (2011)

7. "Preparation of morphology controlled Th1-xUxO2 sintered pellets from low-temperature precursors"
N. Hingant, N. Clavier, N. Dacheux, S. Hubert, N. Barre, R. Podor, L. Aranda
Powder Technology 208, 454 – 460 (2011)

6. "X-Ray diffraction and µ-Raman investigation of the monoclinic-orthorhombic phase transition in Th1-xUx(C2O4)2.2H2O solid solutions"
N. Clavier, N. Hingant, M. Rivenet, S. Obbade, N. Dacheux, N. Barre, F. Abraham
Inorg. Chem. 49, 1921 – 1931 (2010)

5. "Synthesis and characterization of coffinite"
V. Pointeau, A. P. Deditius, F. Miserque, D. Renock, J. Zhang, N. Clavier, N. Dacheux, C. Poinssot, R. C. Ewing
J. Nucl. Mater. 393, 449 – 458 (2009)

4. "Corrosion of the AlFeNi alloy used for the fuel cladding in the Jules Horowitz research reactor"
M. Wintergerst, N. Dacheux, F. Datcharry, E. Herms, B. Kapusta
J. Nucl. Mater. 393, 369 – 380 (2009)

3. "Preparation, sintering and leaching of uranium thorium dioxides"
N. Hingant, N. Clavier, N. Dacheux, N. Barre, S. Hubert, S. Obbade, F. Taborda, F. Abraham
J. Nucl. Mater., 385, 400 – 406 (2009)

2. "Comparative behaviour of britholites and monazite/brabantite solid solutions during leaching tests: experimental and DFT approaches"
E. Veilly, E. du Fou de Kerdaniel, J. Roques, N. Dacheux, N. Clavier
Inorg. Chem. 47, 10971 – 10979 (2008)

1. "Effet of inorganic ligands and hydrogen peroxide on ThO2 dissolution. Behaviour of Th0.87Pu0.13O2 during leaching test"
S. Hubert, G. Heisbourg, N. Dacheux, P. Moisy
Inorg. Chem. 47, 2064 – 2073 (2008)