Cover Image

Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature

In arrears to pH sensing functions, gold-supported titania nanoparticles (AuTNPs) are synthesized at a low temperature 90 °C by the sol-gel technique. Two different dyes phenol red and creosol red dye are encapsulated in AuTNPs nanocomposite. Void-free AuTNPs exhibited the particle size 45 nm which...

Full description

Saved in:
Bibliographic Details
Main Authors: Islam, Shumaila, Alshoaibi, Adil, Alamer, Kawther, Mazher, Javed, Alnaim, Nisrin, Bakhtiar, Hazri
Format: Article
Published: Springer Nature 2024
Subjects:
Q Science (General)
Online Access:http://eprints.utm.my/108931/
http://dx.doi.org/10.1007/s10971-023-06271-y
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.108931
record_format eprints
spelling my.utm.1089312024-12-15T06:08:17Z http://eprints.utm.my/108931/ Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature Islam, Shumaila Alshoaibi, Adil Alamer, Kawther Mazher, Javed Alnaim, Nisrin Bakhtiar, Hazri Q Science (General) In arrears to pH sensing functions, gold-supported titania nanoparticles (AuTNPs) are synthesized at a low temperature 90 °C by the sol-gel technique. Two different dyes phenol red and creosol red dye are encapsulated in AuTNPs nanocomposite. Void-free AuTNPs exhibited the particle size 45 nm which is reduced to 28 nm and 29 nm after PR and CR encapsulation. Heterogeneous bonding confirms the good interaction of PR and CR dye within AuTNPs. The transmittance decreased from 80% to 71% and 65% because of pores presence after dye encapsulation, while the refractive index increased from 1.06 to 1.07 and 1.09 at 633 nm, and bandgap energy varied from 3.17 eV to 3.1 eV and 3.42 eV of AuTNPs, PR-AuTNPs, and CR-AuTNPs, respectively. The CR-AuTNPs exhibited a color time response 0.2 s at pH 12 and a high pKa 9.9 which is greater than PR-AuTNPs’ pka ~ 8 and a time response of 0.4 s. Experimental findings suggested that CR-AuTNPs possessed fast responses as pH sensors. Springer Nature 2024-02 Article PeerReviewed Islam, Shumaila and Alshoaibi, Adil and Alamer, Kawther and Mazher, Javed and Alnaim, Nisrin and Bakhtiar, Hazri (2024) Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature. Journal of Sol-Gel Science and Technology, 109 (2). pp. 283-294. ISSN 0928-0707 http://dx.doi.org/10.1007/s10971-023-06271-y DOI:10.1007/s10971-023-06271-y
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
spellingShingle Q Science (General)
Islam, Shumaila
Alshoaibi, Adil
Alamer, Kawther
Mazher, Javed
Alnaim, Nisrin
Bakhtiar, Hazri
Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
description In arrears to pH sensing functions, gold-supported titania nanoparticles (AuTNPs) are synthesized at a low temperature 90 °C by the sol-gel technique. Two different dyes phenol red and creosol red dye are encapsulated in AuTNPs nanocomposite. Void-free AuTNPs exhibited the particle size 45 nm which is reduced to 28 nm and 29 nm after PR and CR encapsulation. Heterogeneous bonding confirms the good interaction of PR and CR dye within AuTNPs. The transmittance decreased from 80% to 71% and 65% because of pores presence after dye encapsulation, while the refractive index increased from 1.06 to 1.07 and 1.09 at 633 nm, and bandgap energy varied from 3.17 eV to 3.1 eV and 3.42 eV of AuTNPs, PR-AuTNPs, and CR-AuTNPs, respectively. The CR-AuTNPs exhibited a color time response 0.2 s at pH 12 and a high pKa 9.9 which is greater than PR-AuTNPs’ pka ~ 8 and a time response of 0.4 s. Experimental findings suggested that CR-AuTNPs possessed fast responses as pH sensors.
format Article
author Islam, Shumaila
Alshoaibi, Adil
Alamer, Kawther
Mazher, Javed
Alnaim, Nisrin
Bakhtiar, Hazri
author_facet Islam, Shumaila
Alshoaibi, Adil
Alamer, Kawther
Mazher, Javed
Alnaim, Nisrin
Bakhtiar, Hazri
author_sort Islam, Shumaila
title Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
title_short Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
title_full Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
title_fullStr Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
title_full_unstemmed Organic dyes influence on structural, optical, and pH sensing characteristics of gold-supported titania nanoparticles at low temperature
title_sort organic dyes influence on structural, optical, and ph sensing characteristics of gold-supported titania nanoparticles at low temperature
publisher Springer Nature
publishDate 2024
url http://eprints.utm.my/108931/
http://dx.doi.org/10.1007/s10971-023-06271-y
_version_ 1818834067804651520
score 13.223943

Similar Items