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Article Dans Une Revue Journal of Physical Chemistry C Année : 2023

Milled nanodiamonds overproduce solvated electrons while scavenging hydroxyl radicals under gamma irradiation

Résumé

Among the different nanodiamonds, milled nanodiamonds (MNDs) from high pressure high temperature (HPHT) synthesis exhibit a crystalline quality close to the bulk diamond, making it a serious candidate for quantum or energy-related fields. In this study, MNDs aqueous suspensions with oxidized (MND-Ox) and hydrogenated (MND-H) surface chemistries were irradiated with gamma-rays. Using optimized nanoparticle-compatible methods, we revealed that MNDs in suspension enhance the production of solvated electrons under irradiation, with a higher yield for MND-H. Also, for the first time, a surface chemistry-dependent scavenging effect of hydroxyl radicals was highlighted for this type of nanodiamonds.

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Chimie
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Dates et versions

hal-04445842 , version 1 (08-02-2024)

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Florent Ducrozet, Emilie Brun, Hugues Girard, Jean-Charles Arnault, Cécile Sicard-Roselli. Milled nanodiamonds overproduce solvated electrons while scavenging hydroxyl radicals under gamma irradiation. Journal of Physical Chemistry C, 2023, 127 (39), pp.19544-19553. ⟨10.1021/acs.jpcc.3c04722⟩. ⟨hal-04445842⟩
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