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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00499824" target="_blank" >RIV/68378271:_____/18:00499824 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/18:00497855 RIV/68407700:21230/18:00326888

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c8ra07873d" target="_blank" >http://dx.doi.org/10.1039/c8ra07873d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8ra07873d" target="_blank" >10.1039/c8ra07873d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.n

Název v anglickém jazyce

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

Popis výsledku anglicky

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.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

66

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

37681-37692

Kód UT WoS článku

000450902700014

EID výsledku v databázi Scopus

2-s2.0-85056896012