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SBA-15 mesoporous particles with adsorbed cresol red dye and functionalized with 3-aminopropyl groups : materials properties and dye release studies
ID
Švara Fabjan, Erika
(
Author
),
ID
Cerc Korošec, Romana
(
Author
),
ID
Šifrer, Klara
(
Author
),
ID
Sever Škapin, Andrijana
(
Author
),
ID
Martínez-Máñez, Ramón
(
Author
)
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https://www.sciencedirect.com/science/article/pii/S1387181124000301
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Abstract
Research in the field of sensing has focused on tailoring the responsiveness of materials through the variation in materials properties achieved via functionalization of the mesoporous matrix. pH indicator dyes capable of protonation/deprotonation reactions are known to display different forms, resulting in changes in colour. This research focused on the preparation of mesoporous substrates SBA-15 with integrated pH indicator dye o-cresolsulphonephtalein (cresol red) grafted with (3-aminopropy)trimethoxysilane (gaining functionalized-SBA-15 material) in order to gain a colour change response following release of the dye. UV-Vis reflectance and absorbance spectra were used to evaluate forms of cresol red. The textural properties, including specific surface area, pore size distribution and pore volume were evaluated using nitrogen sorption, and XRD analysis was conducted to evaluate crystallinity of the material and pore ordering. The presence of 3-aminopropyl groups was determined by thermal decomposition using TGA–DSC/MS. The functionalized SBA-15 materials loaded with cresol red mostly retained ordering of the pores and showed a slight reduction in surface area. Functionalization changed the surface properties of the material. In the non-functionalized SBA-15, cresol red was present in both double (H$_2$L) and single (HL$^−$) protonated forms, whereas in the functionalized SBA-15 the deprotonated L$^{2−}$ form prevailed. Through desorption experiments cresol red was successfully desorbed from selected sample to different media. The change of colour caused by alterations in the form of the dye once released from the mesoporous silica material into the medium was confirmed. The form of cresol red released was determined by the pH of the medium.
Language:
English
Keywords:
mesoporous materials
,
SBA-15
,
functionalization
,
tailoring the responsiveness
,
sensing
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FKKT - Faculty of Chemistry and Chemical Technology
Publication status:
Published
Publication version:
Version of Record
Year:
2024
Number of pages:
12 str.
Numbering:
Vol. 368, art. 113008
PID:
20.500.12556/RUL-156206
UDC:
54
ISSN on article:
1873-3093
DOI:
10.1016/j.micromeso.2024.113008
COBISS.SI-ID:
182066435
Publication date in RUL:
14.05.2024
Views:
325
Downloads:
57
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Record is a part of a journal
Title:
Microporous and mesoporous materials
Publisher:
Elsevier
ISSN:
1873-3093
COBISS.SI-ID:
22924293
Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Secondary language
Language:
Slovenian
Keywords:
mezoporozni materiali
,
SBA-15
,
funkcionalizacija
,
uravnavanje odzivnosti
,
zaznavanje
Projects
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P2-0273
Name:
Gradbeni objekti in materiali
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P1-0134
Name:
Kemija za trajnostni razvoj
Funder:
Other - Other funder or multiple funders
Funding programme:
MCIN/AEI/10.13039/501100011033
Project number:
PID2021-126304OB-C41
Funder:
Other - Other funder or multiple funders
Funding programme:
MCIN/AEI/10.13039/501100011033
Project number:
PID2021-128141OB-C22
Funder:
EC - European Commission
Funding programme:
European Regional Development Fund
Name:
A way of doing Europe
Funder:
Other - Other funder or multiple funders
Funding programme:
Generalitat Valenciana
Project number:
CIPROM/2021/007
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