BPB dye confined growth of surfactant-assisted mesostructured silica matrix fiber optic sensing tracers
| Autor: | Muhammad Safwan Abd Aziz, Shahzad Naseem, Shumaila Islam, Saira Riaz, Siti Sarah Usman, Hazri Bakhtiar, Zuhaib Haider, Lau Pik Suan, Kashif Chaudhary |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Optical fiber 010405 organic chemistry Heteroatom Bromophenol blue General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences law.invention lcsh:Chemistry chemistry.chemical_compound chemistry Pulmonary surfactant Chemical engineering lcsh:QD1-999 Bromide law Surface roughness Mesoporous material Refractive index |
| Zdroj: | Journal of Saudi Chemical Society, Vol 23, Iss 4, Pp 427-438 (2019) |
| ISSN: | 1319-6103 |
| Popis: | 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. Keywords: Silica nano-matrix, Bromophenol blue dye, Mesoporous structure, Optical properties, Evanescent field optical fiber sensors, Sensitivity |
| Databáze: | OpenAIRE |
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