Chemical Sensing Properties of BaF2-Modified hBN Flakes towards Detection of Volatile Organic Compounds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922117" target="_blank" >RIV/60461373:22310/21:43922117 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2227-9040/9/9/263" target="_blank" >https://www.mdpi.com/2227-9040/9/9/263</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/chemosensors9090263" target="_blank" >10.3390/chemosensors9090263</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical Sensing Properties of BaF2-Modified hBN Flakes towards Detection of Volatile Organic Compounds

Popis výsledku v původním jazyce

The application of BaF2-modified hBN flakes as rapid response and recovery as well as sensitive chemoresistive sensing device materials for detection of acetone and/or ethanol is presented in this study. Modification of the hBN flakes was achieved by using the modified polymer derived ceramics (PDCs) process through the use of 0-10 wt% BaF2 and 5 wt% Li3N. Upon exposure to individual acetone and ethanol vapours, room temperature sensing studies revealed high LoD values (-144-460 ppm(acetone) and -134-543 ppm(ethanol)) with extremely compromised sensitivities of -0.042-0.72 x 10(-2) ppm(acetone)(-1) and -0.045-0.19 x 10(-2) ppm(ethanol)(-1) for the structurally improved 5-10 wt% BaF2-modified hBN flakes. Moreover, enhanced sensing for 0-2.5 wt% BaF2-modified hBN flakes, as shown by the low LoDs (-43-86 ppm(acetone) and -30-62 ppm(ethanol)) and the high sensitivities (-1.8-2.1 x 10(-2) ppm(acetone)(-1) and -1.5-1.6 x 10(-2) ppm(ethanol)(-1)), was attributed to the presence of defects subsequently providing an abundance of adsorption sites. Overall, the study demonstrated the importance of structural properties of hBN flakes on their surface chemistry towards room temperature selective and sensitive detection of VOCs.

Název v anglickém jazyce

Chemical Sensing Properties of BaF2-Modified hBN Flakes towards Detection of Volatile Organic Compounds

Popis výsledku anglicky

The application of BaF2-modified hBN flakes as rapid response and recovery as well as sensitive chemoresistive sensing device materials for detection of acetone and/or ethanol is presented in this study. Modification of the hBN flakes was achieved by using the modified polymer derived ceramics (PDCs) process through the use of 0-10 wt% BaF2 and 5 wt% Li3N. Upon exposure to individual acetone and ethanol vapours, room temperature sensing studies revealed high LoD values (-144-460 ppm(acetone) and -134-543 ppm(ethanol)) with extremely compromised sensitivities of -0.042-0.72 x 10(-2) ppm(acetone)(-1) and -0.045-0.19 x 10(-2) ppm(ethanol)(-1) for the structurally improved 5-10 wt% BaF2-modified hBN flakes. Moreover, enhanced sensing for 0-2.5 wt% BaF2-modified hBN flakes, as shown by the low LoDs (-43-86 ppm(acetone) and -30-62 ppm(ethanol)) and the high sensitivities (-1.8-2.1 x 10(-2) ppm(acetone)(-1) and -1.5-1.6 x 10(-2) ppm(ethanol)(-1)), was attributed to the presence of defects subsequently providing an abundance of adsorption sites. Overall, the study demonstrated the importance of structural properties of hBN flakes on their surface chemistry towards room temperature selective and sensitive detection of VOCs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

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

Chemosensors

ISSN

2227-9040

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000699243700001

EID výsledku v databázi Scopus

2-s2.0-85115290744