Deagglomeration and characterization of detonation nanodiamonds for biomedical applications

Seidy Pedroso-Santana*, Andrei Sarabia-Saínz, Noralvis Fleitas-Salazar, Karla Santacruz-Gómez, Monica Acosta-Elías, Martin Pedroza-Montero, Raul Riera

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Detonation nanodiamonds (DNDs) are usually small particles of 4–5 nm, but in aqueous suspension, DNDs form agglomerates in sizes larger than 1 μm. We propose the use of Bead Assisted Sonic Disintegration and a carboxylation procedure, to reduce DNDs aggregates sizes to approximately 100 nm. High cost zirconium beads have been substituted by silica beads synthetized in our laboratory and less-time consuming conditions were standardized. Techniques as Dynamic Light Scattering (DLS), Fourier Transform InfraRed Spectroscopy (FTIR), Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS), have been used to characterize the resulting diamond nanoparticles. While the incubation of Red Blood Cells with partially disaggregated DNDs was used to study whether these nanodiamonds impact in a living system. Our results show the absence of a negative effect in cell viability as well as no differences between Raman spectra of hemoglobin (Hb), from control and cell + DNDs conditions.

Original languageEnglish
Pages (from-to)15-21
Number of pages7
JournalJournal of Applied Biomedicine
Volume15
Issue number1
DOIs
StatePublished - 1 Jan 2017

Bibliographical note

Publisher Copyright:
© 2016 Faculty of Health and Social Sciences, University of South Bohemia in Ceske Budejovice

Keywords

  • Carboxylation
  • Deagglomeration
  • Nanodiamond
  • Raman
  • RBC

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