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Mesoporous anatase based opto-chemical sensor

Islam, Shumaila and Bakhtiar, Hazri and Aziz, Madzlan and Riaz, Saira and Naseem, Shahzad (2019) Mesoporous anatase based opto-chemical sensor. Materials Science in Semiconductor Processing, 100 . pp. 236-244. ISSN 13698001

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Official URL: http://dx.doi.org/10.1016/j.mssp.2019.05.009


Organic dyes immobilized nanocrystalline anatase matrix is synthesized by low-temperature sol-gel method for sensing analysis. It is determined that the thermally stable anatase phase has average crystallite size of 5 nm, low roughness 2 nm, average particle size 5.3 nm, specific surface area of 170 m2g–1 and refractive index 2. However, after immobilization, smaller average crystallite size ∼3 nm, high roughness 9 nm, smaller average particle size 4.5 nm, larger surface area of 196 m2g–1 and low refractive index 1.8 is determined. The sensitivity 116 RI/pH at 428 nm over pH 1–12 is calculated. The average response time ∼0.3 s in pH 12 is observed.

Item Type:Article
Uncontrolled Keywords:Anatase matrix, Organic dyes
Subjects:Q Science > QC Physics
ID Code:88146
Deposited By: Widya Wahid
Deposited On:15 Dec 2020 07:09
Last Modified:15 Dec 2020 07:09

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