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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Chemosensors

ISSN

2227-9040

e-ISSN

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Volume of the periodical

9

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

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UT code for WoS article

000699243700001

EID of the result in the Scopus database

2-s2.0-85115290744