title: Hydroxyl radical production induced by plasma hydrogenated nanodiamonds under X-ray irradiation.
abstract: For the first time, overproduction of hydroxyl radicals (HO˙) induced by plasma hydrogenated detonation nanodiamonds (H-NDs) under X-ray irradiation is reported. Using coumarin (COU) as a fluorescent probe, we reveal a significant increase of 40% of the HO˙ production in the presence of H-NDs (6-100 μg ml-1) compared with water alone. This effect is related to the negative electron affinity of the hydrogenated nanodiamonds and illustrates the ability of H-NDs to produce reactive oxygen species probably via electron emission in water under X-ray irradiation.
authors.affiliation: CEA, LIST, Diamond Sensors Laboratory, F-91191 Gif-sur-Yvette, France. magdalena.kurzyp@cea.fr jean-charles.arnault@cea.fr.
authors.forename: Magdalena
authors.identifier: http://orcid.org/0000-0002-9263-0602
authors.initials: M
authors.lastname: Kurzyp
authors.affiliation: CEA, LIST, Diamond Sensors Laboratory, F-91191 Gif-sur-Yvette, France. magdalena.kurzyp@cea.fr jean-charles.arnault@cea.fr.
authors.forename: Hugues A
authors.identifier: http://orcid.org/0000-0001-8491-0412
authors.initials: HA
authors.lastname: Girard
authors.affiliation: University Paris-Sud, Laboratory of Physical Chemistry, CNRS UMR 8000, Orsay, F-91405, France. cecile.sicard@u-psud.fr.
authors.forename: Yannis
authors.initials: Y
authors.lastname: Cheref
authors.affiliation: University Paris-Sud, Laboratory of Physical Chemistry, CNRS UMR 8000, Orsay, F-91405, France. cecile.sicard@u-psud.fr.
authors.forename: Emilie
authors.initials: E
authors.lastname: Brun
authors.affiliation: University Paris-Sud, Laboratory of Physical Chemistry, CNRS UMR 8000, Orsay, F-91405, France. cecile.sicard@u-psud.fr.
authors.forename: Cecile
authors.initials: C
authors.lastname: Sicard-Roselli
authors.affiliation: CEA, LIST, Diamond Sensors Laboratory, F-91191 Gif-sur-Yvette, France. magdalena.kurzyp@cea.fr jean-charles.arnault@cea.fr.
authors.forename: Samuel
authors.initials: S
authors.lastname: Saada
authors.affiliation: CEA, LIST, Diamond Sensors Laboratory, F-91191 Gif-sur-Yvette, France. magdalena.kurzyp@cea.fr jean-charles.arnault@cea.fr.
authors.forename: Jean-Charles
authors.initials: JC
authors.lastname: Arnault