Islam, S. and Bidin, N. and Riaz, S. and Naseem, S. (2016) Sol-gel based phenolphthalein encapsulated heterogeneous silica-titania optochemical pH nanosensor. Journal of Industrial and Engineering Chemistry, 34 . pp. 258-268. ISSN 1226-086X
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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....
Abstract
Thermally stable phenolphthalein encapsulated silica-titania nanomatrix is fabricated by sol-gel method for optochemical pH sensing. The particle size ~56-121 nm is obtained with average surface roughness of 3.95 nm after the encapsulation of dye which is highly appropriate for optical and sensing applications. High surface area value ~218 m2/g, pore volume of 0.16 cm3/g and pore diameter of 31.49 Å is obtained after encapsulation. Furthermore, the sensor response is optimized at pH 10 Fast response time 1-2s, sensitivity with good reproducibility identify that the fabricated optochemical nanosensor is challenging for the detection of pH at room temperature.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nanosensors, Particle size, pH sensors, Silica, Sol-gels, Surface roughness, Titanium dioxide, Average surface roughness, Fast response time, High surface area, Phenolphthalein, Reproducibilities, Sensing applications, Silica-titania, Sol-gel encapsulation, Sol-gel process |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Islamic Studies |
| ID Code: | 73858 |
| Deposited By: | Haliza Zainal |
| Deposited On: | 20 Nov 2017 02:17 |
| Last Modified: | 20 Nov 2017 02:17 |
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