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BPB dye confined growth of surfactant-assisted mesostructured silica matrix fiber optic sensing tracers

Islam, Shumaila and Bakhtiar, Hazri and Haider, Zuhaib and Riaz, Saira and Naseem, Shahzad and Chaudhary, Kashif and Suan, Lau Pik and Usman, Siti Sarah and Abd.Aziz, Muhammad Safwan (2019) BPB dye confined growth of surfactant-assisted mesostructured silica matrix fiber optic sensing tracers. Journal of Saudi Chemical Society, 23 (4). pp. 427-438. ISSN 1319-6103


Official URL: http://dx.doi.org/10.1016/j.jscs.2018.07.005


Thermally stable surfactant modified silica nano-matrix is synthesized by the sol–gel method at low temperature. The surfactant such as cetyltrimethylammonium bromide (CTAB) assisted silica matrix is encapsulated with bromophenol blue (BPB) for sensing activities. Prepared nano-matrix consists of numerous morphological structures such as a pseudo-spherical, hierarchal and islands. The morphology of mesoporous high surface area matrices is strongly affected by CTAB, BPB dye and the aging conditions that determine the transformation from disordered silica nano-matrix morphologies to ordered encapsulated structures. Furthermore, smooth surface matrices with low surface roughness 1.2 nm, low refractive index 1.36, large pores and small dimensions of heteroatoms contribute to the stable sensing activities. The response of coated fiber optic is determined at dynamic pH range 1–12. The prepared sensor has reversibility/repeatability, stability and fast response time of approximately 0.25 s in basic media. The accuracy of sensing device measurements in household ammonia solution and the borax solution suggested that prepared device has clear potential for daily life usage.

Item Type:Article
Uncontrolled Keywords:Mesoporous structure, Optical properties
Subjects:Q Science > QC Physics
ID Code:89035
Deposited By: Widya Wahid
Deposited On:26 Jan 2021 16:41
Last Modified:26 Jan 2021 16:41

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