Generation of (H2O2)N clusters on argon and ice nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00538219" target="_blank" >RIV/61388955:_____/21:00538219 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10431132

Výsledek na webu

<a href="http://hdl.handle.net/11104/0316043" target="_blank" >http://hdl.handle.net/11104/0316043</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijms.2020.116514" target="_blank" >10.1016/j.ijms.2020.116514</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Generation of (H2O2)N clusters on argon and ice nanoparticles

Popis výsledku v původním jazyce

Hydrogen peroxide is a highly reactive and relatively unstable molecule, therefore pure (H2O2)N clusters are difficult to generate. In order to investigate the solvent effects on the H2O2 reactivity, experiments with H2O2 clusters are desirable. We have generated (H2O2)N clusters on free nanoparticles in molecular beams using a pickup technique. The individual H2O2 molecules were evaporated from the stable complex of urea with hydrogen peroxide (UHP) and they were picked up by ArM and (H2O)M nanoparticles in a molecular beam prepared by supersonic expansion. The clusters were probed by the time-of-flight mass spectrometry after electron ionization. The mass spectra showed that several H2O2 molecules could be deposited on both ArM and (H2O)M nanoparticles. On ArM, they coagulate and generate (H2O2)N clusters with N ≥ 20, while on ice nanoparticles the coagulation is inhibited on the timescale of our experiment (∼ 0.7 ms). The mass spectra suggest that there is no significant contamination of the (H2O2)N clusters with oxygen and water, which would be the products of H2O2 thermal decomposition. The proposed method represents a way of producing (H2O2)N clusters for future experiments.

Název v anglickém jazyce

Generation of (H2O2)N clusters on argon and ice nanoparticles

Popis výsledku anglicky

Hydrogen peroxide is a highly reactive and relatively unstable molecule, therefore pure (H2O2)N clusters are difficult to generate. In order to investigate the solvent effects on the H2O2 reactivity, experiments with H2O2 clusters are desirable. We have generated (H2O2)N clusters on free nanoparticles in molecular beams using a pickup technique. The individual H2O2 molecules were evaporated from the stable complex of urea with hydrogen peroxide (UHP) and they were picked up by ArM and (H2O)M nanoparticles in a molecular beam prepared by supersonic expansion. The clusters were probed by the time-of-flight mass spectrometry after electron ionization. The mass spectra showed that several H2O2 molecules could be deposited on both ArM and (H2O)M nanoparticles. On ArM, they coagulate and generate (H2O2)N clusters with N ≥ 20, while on ice nanoparticles the coagulation is inhibited on the timescale of our experiment (∼ 0.7 ms). The mass spectra suggest that there is no significant contamination of the (H2O2)N clusters with oxygen and water, which would be the products of H2O2 thermal decomposition. The proposed method represents a way of producing (H2O2)N clusters for future experiments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA19-14105S" target="_blank" >GA19-14105S: Reakce atmosferických radikálů na klastrech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

International Journal of Mass Spectrometry

ISSN

1387-3806

e-ISSN

1873-2798

Svazek periodika

461

Číslo periodika v rámci svazku

MAR 2021

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

116514

Kód UT WoS článku

000616138200004

EID výsledku v databázi Scopus

2-s2.0-85098994157