Water interaction with hydrogenated and oxidized detonationnanodiamonds - microscopic and spectroscopic analyses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00458952" target="_blank" >RIV/68378271:_____/16:00458952 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/16:00302980

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.diamond.2015.08.016" target="_blank" >http://dx.doi.org/10.1016/j.diamond.2015.08.016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.diamond.2015.08.016" target="_blank" >10.1016/j.diamond.2015.08.016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Water interaction with hydrogenated and oxidized detonationnanodiamonds - microscopic and spectroscopic analyses

Popis výsledku v původním jazyce

Here we report on investigation of water interaction with hydrogenated and oxidized detonation nanodiamonds (H-DNDs, O-DNDs) by means of Fourier transform infrared spectroscopy (FTIR), thermal analysis, and Kelvin probe force microscopy (KPFM). Higher water content (4.4%) as well as weaker interaction of water with H-DNDs are identified by thermal analysis. It is explained by hydrophobicity of the H-DND surface, as revealed by the analysis surface water in FTIR spectra. On the other hand, hydrophilic nature of O-DNDs leads to lower water content (3.1%) but stronger interaction with the O-DND surface. This is evidenced by as high as 300 °C desorption temperature of the surface water from O-DNDs. KPFM analysis shows that the surface-bound water can have significant screening effect on contact potential difference (CPD) of nanodiamonds (up to 510 mV) as well as on the CPD difference between H-DNDs and O-DNDs (from 50 mV to 210 mV). Nevertheless, H-DNDs exhibit always lower work function.n

Název v anglickém jazyce

Water interaction with hydrogenated and oxidized detonationnanodiamonds - microscopic and spectroscopic analyses

Popis výsledku anglicky

Here we report on investigation of water interaction with hydrogenated and oxidized detonation nanodiamonds (H-DNDs, O-DNDs) by means of Fourier transform infrared spectroscopy (FTIR), thermal analysis, and Kelvin probe force microscopy (KPFM). Higher water content (4.4%) as well as weaker interaction of water with H-DNDs are identified by thermal analysis. It is explained by hydrophobicity of the H-DND surface, as revealed by the analysis surface water in FTIR spectra. On the other hand, hydrophilic nature of O-DNDs leads to lower water content (3.1%) but stronger interaction with the O-DND surface. This is evidenced by as high as 300 °C desorption temperature of the surface water from O-DNDs. KPFM analysis shows that the surface-bound water can have significant screening effect on contact potential difference (CPD) of nanodiamonds (up to 510 mV) as well as on the CPD difference between H-DNDs and O-DNDs (from 50 mV to 210 mV). Nevertheless, H-DNDs exhibit always lower work function.n

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GA15-01809S" target="_blank" >GA15-01809S: Studium funkcionalizovaných nanočástic diamantu pro konverzi energie</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

Název periodika

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

—

Svazek periodika

63

Číslo periodika v rámci svazku

Mar

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

97-102

Kód UT WoS článku

000371942700018

EID výsledku v databázi Scopus

2-s2.0-84959242332