Mayuri Ausekar, Ravi Mawale, Pavel Pazdera, JosefHavel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00094957" target="_blank" >RIV/00216224:14310/17:00094957 - 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

Mayuri Ausekar, Ravi Mawale, Pavel Pazdera, JosefHavel

Popis výsledku v původním jazyce

The WO3 is multifunctional material and has unique characteristics. It has wide range of applications in biomedicine, cosmetics, electronics, coatings and plastics, catalysis, etc. [1-2]. It has been studied for its various properties such as electrochromism, photocatalysis, and/or sensing capabilities, for example [3]. In this work Laser Desorption Ionisation (LDI) with QIT-TOF-MS was used to study the generation of WO3 clusters in gas phase and the formation of (WO3)n+/- (n=1-7) was detected (Fig. 1). When nanodiamonds and graphene oxide were used as matrices, the spectra in positive ion mode were found more complex than in negative one and higher (WO3)n- (n=1-19) clusters were detected. In addition to (WO3)n- clusters also some oxygen rich and/or oxygen defficient species were found in both LDI and MALDI methods. The total number of clusters identified was over one hundred. Concluding, the use of carbonaceous matrices enabled observation of high mass (WO3)n- clusters (n up to 19) for the first time. The knowledge of generation of high mass tungsten oxide clusters in gas phase and clusters stoichiometry can be useful to develope new materials.

Název v anglickém jazyce

Mayuri Ausekar, Ravi Mawale, Pavel Pazdera, JosefHavel

Popis výsledku anglicky

The WO3 is multifunctional material and has unique characteristics. It has wide range of applications in biomedicine, cosmetics, electronics, coatings and plastics, catalysis, etc. [1-2]. It has been studied for its various properties such as electrochromism, photocatalysis, and/or sensing capabilities, for example [3]. In this work Laser Desorption Ionisation (LDI) with QIT-TOF-MS was used to study the generation of WO3 clusters in gas phase and the formation of (WO3)n+/- (n=1-7) was detected (Fig. 1). When nanodiamonds and graphene oxide were used as matrices, the spectra in positive ion mode were found more complex than in negative one and higher (WO3)n- (n=1-19) clusters were detected. In addition to (WO3)n- clusters also some oxygen rich and/or oxygen defficient species were found in both LDI and MALDI methods. The total number of clusters identified was over one hundred. Concluding, the use of carbonaceous matrices enabled observation of high mass (WO3)n- clusters (n up to 19) for the first time. The knowledge of generation of high mass tungsten oxide clusters in gas phase and clusters stoichiometry can be useful to develope new materials.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/GA13-05082S" target="_blank" >GA13-05082S: Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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