Atmospheric plasma treatment of detonation nanodiamonds in water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00471054" target="_blank" >RIV/68378271:_____/16:00471054 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Atmospheric plasma treatment of detonation nanodiamonds in water

Popis výsledku v původním jazyce

A novel method for modifying DNDs suspended in water by DC atmospheric plasma sustained above the water suspension was reported. DNDs were used in as-received form (labeled as H-DND) or after air-annealing (labeled as O-DND). The influence of applied voltage (10 and 15 kV) and treatment duration (1, 5 and 10 minutes) on the surface chemistry of DNDs was evaluated by FTIR spectroscopy. Plasma treated H-DND particles reveal i) decreasing ratio of CH3 to CH2 surface groups; ii) disappearance of double bonds present in the graphitic shell of the particles and iii) re-arrangement of residual oxygen-containing moieties on the particle surface. In contrast to H-DNDs, the chemical state of O-DND surface was not affected by plasma treatment. In this case, newly formed doublet at 1580 and 1604 cm-1 was detected whose origin is not clear yet. Complementary XPS and Raman measurements did not reflect any changes of DNDs after the plasma treatment.

Název v anglickém jazyce

Atmospheric plasma treatment of detonation nanodiamonds in water

Popis výsledku anglicky

A novel method for modifying DNDs suspended in water by DC atmospheric plasma sustained above the water suspension was reported. DNDs were used in as-received form (labeled as H-DND) or after air-annealing (labeled as O-DND). The influence of applied voltage (10 and 15 kV) and treatment duration (1, 5 and 10 minutes) on the surface chemistry of DNDs was evaluated by FTIR spectroscopy. Plasma treated H-DND particles reveal i) decreasing ratio of CH3 to CH2 surface groups; ii) disappearance of double bonds present in the graphitic shell of the particles and iii) re-arrangement of residual oxygen-containing moieties on the particle surface. In contrast to H-DNDs, the chemical state of O-DND surface was not affected by plasma treatment. In this case, newly formed doublet at 1580 and 1604 cm-1 was detected whose origin is not clear yet. Complementary XPS and Raman measurements did not reflect any changes of DNDs after the plasma treatment.

Druh

O - Ostatní výsledky

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA15-01687S" target="_blank" >GA15-01687S: Alotropní formy uhlíku: mikrobiologické studie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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