Hydroxylation and self-assembly of colloidal hydrogenated nanodiamonds by aqueous oxygen radicals from atmospheric pressure plasma jet

Jirásek, Vít; Stehlík, Štěpán; Štenclová, Pavla; Artemenko, Anna; Rezek, Bohuslav; Kromka, Alexander

doi:https://dx.doi.org/10.1039/c8ra07873d

Počet záznamů: 1

Hydroxylation and self-assembly of colloidal hydrogenated nanodiamonds by aqueous oxygen radicals from atmospheric pressure plasma jet

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SYSNO ASEP	0499824
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Hydroxylation and self-assembly of colloidal hydrogenated nanodiamonds by aqueous oxygen radicals from atmospheric pressure plasma jet
Tvůrce(i)	Jirásek, Vít (FZU-D)_RID Stehlík, Štěpán (FZU-D)_{RID, ORCID} Štenclová, Pavla (FZU-D)_ORCID Artemenko, Anna (FZU-D)_{RID, ORCID} Rezek, Bohuslav (FZU-D)_{RID, ORCID} Kromka, Alexander (FZU-D)_{RID, ORCID, SAI}
Celkový počet autorů	6
Zdroj.dok.	RSC Advances. - : Royal Society of Chemistry Roč. 8, č. 66 (2018), s. 37681-37692
Poč.str.	12 s.
Forma vydání	Online - E
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	self-assembly ; plasma jet ; APPJ ; oxygen atoms ; nanodiamonds
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
Obor OECD	Condensed matter physics (including formerly solid state physics, supercond.)
CEP	GJ18-11711Y GA ČR - Grantová agentura ČR
	EF16_019/0000760 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	NV15-33018A GA MZd - Ministerstvo zdravotnictví
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000450902700014
EID SCOPUS	85056896012
DOI	10.1039/c8ra07873d
Anotace	Plasma chemical modification of nanoparticles in gas-liquid type reactors enables controllable, specific, low-cost, and environmentally friendly alternative to other treatments. Here the atmospheric pressure radio-frequency microplasma jet (μ-APPJ) operating with 0.6% O2 in He is used to deliver aqueous oxygen radicals (AOR) to ~3 nm hydrogenated detonation nanodiamonds (H-DNDs) suspended in water. The main reaction mechanism is identified as the abstraction of surface hydrogen atoms by O or OH radicals and a consequent attachment of the OH group, thereby increasing concentration of alcohols, carboxyls, and aldehydes on the DND’s surface. FTIR spectra reveal also a structural re-arrangement of the surface water on the AOR-treated H-DNDs. Yet zeta-potential of AOR-treated H-DNDs still remains positive (decreases from +45 mV to +30 mV). The chemical modification gives rise to formation of nanoscale chain-like aggregates when AOR-treated H-DNDs are deposited on Si substrate.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2019

Počet záznamů: 1