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Deployment of aligned ZnO nanorod with distinctive porous morphology: Potential scaffold for the detection of p-nitrophenylamine

Paper ID Volume ID Publish Year Pages File Format Full-Text
40002 45842 2014 7 PDF Available
Title
Deployment of aligned ZnO nanorod with distinctive porous morphology: Potential scaffold for the detection of p-nitrophenylamine
Abstract

•Aligned nanoporous ZnO NRs on FTO glass are grown.•Aligned nanoporous ZnO NRs is utilized for fabricating the highly sensitive p-nitrophenylamine chemical sensor.•Sensor shows a very high sensitivity of ∼184.26 μA. mM−1 cm−2.•A reasonable detection limit of ∼53.7 μM with correlation coefficient of ∼0.97569 is observed.

The low temperature solution method was employed to synthesize aligned nanoporous zinc oxide (ZnO) nanorods (NRs) on fluorine doped tin oxide (FTO) glass and applied as an electron mediator for the fabrication of high-sensitive chemical sensor towards the detection of p-nitrophenylamine (p-NPA) in an aqueous medium. Well-crystalline ZnO nanorods with nanoporous morphology were arranged vertically on the FTO substrate. The aligned nanoporous ZnO NRs thin film presented the good aspect ratio of Zn and O elements in terms of atomic weight percentage. The cyclovoltametry and amperometry analysis deduced the rapid electrocatalytic activity of aligned nanoporous ZnO NRs electrode towards p-NPA chemical. The aligned nanoporous ZnO NRs electrode was used to fabricate p-NPA chemical sensor which showed significantly high and reproducible sensitivity of ∼184.26 μA mM−1 cm−2 with a short response time ≥8 s. The fabricated p-NPA chemical sensor exhibited reasonable detection limit of ∼53.7 μM and good linearity in the range of 5–20 μM with the correlation efficient of R = ∼0.97569.

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Keywords
ZnO nanorods; Nanoporous; p-Nitrophenylamine; Chemical sensor; Electrochemical properties
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Deployment of aligned ZnO nanorod with distinctive porous morphology: Potential scaffold for the detection of p-nitrophenylamine
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 470, 30 January 2014, Pages 271–277
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us