Hydrogenation of HPHT nanodiamonds and their nanoscale interaction with chitosan

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00571601" target="_blank" >RIV/68378271:_____/23:00571601 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/23:00365722 RIV/68407700:21340/23:00365722

Výsledek na webu

<a href="https://doi.org/10.1016/j.diamond.2023.109754" target="_blank" >https://doi.org/10.1016/j.diamond.2023.109754</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.diamond.2023.109754" target="_blank" >10.1016/j.diamond.2023.109754</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogenation of HPHT nanodiamonds and their nanoscale interaction with chitosan

Popis výsledku v původním jazyce

In this study, a series of high-pressure high-temperature nanodiamonds (HPHT NDs) with varying levels of hydrogenation and sp2 carbon content is prepared and characterized in terms of optical properties, structure, surface chemistry, particle size distribution, and zeta potential. The higher the surface sp2-C content and level of hydrogenation the better dispersibility in acidic to neutral pH and higher isoelectric points are achieved. We further evaluated the interaction of hydrogenated HPHT NDs with chitosan by infrared spectroscopy and atomic force microscopy. We have found that chitosan is electrostatically attracted to the hydrogenated HPHT NDs, it improves the dispersibility of the HPHT NDs with a lower level of hydrogenation, and it provides colloidal stability in the broad pH range 2–11 to all hydrogenated HPHT NDs. Finally, we demonstrate that chitosan coating enables the decoration of hydrogenated HPHT NDs by silver nanoparticles.

Název v anglickém jazyce

Hydrogenation of HPHT nanodiamonds and their nanoscale interaction with chitosan

Popis výsledku anglicky

In this study, a series of high-pressure high-temperature nanodiamonds (HPHT NDs) with varying levels of hydrogenation and sp2 carbon content is prepared and characterized in terms of optical properties, structure, surface chemistry, particle size distribution, and zeta potential. The higher the surface sp2-C content and level of hydrogenation the better dispersibility in acidic to neutral pH and higher isoelectric points are achieved. We further evaluated the interaction of hydrogenated HPHT NDs with chitosan by infrared spectroscopy and atomic force microscopy. We have found that chitosan is electrostatically attracted to the hydrogenated HPHT NDs, it improves the dispersibility of the HPHT NDs with a lower level of hydrogenation, and it provides colloidal stability in the broad pH range 2–11 to all hydrogenated HPHT NDs. Finally, we demonstrate that chitosan coating enables the decoration of hydrogenated HPHT NDs by silver nanoparticles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

1879-0062

Svazek periodika

134

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

109754

Kód UT WoS článku

000944148500001

EID výsledku v databázi Scopus

2-s2.0-85148332419