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A practical non-enz...
A practical non-enzymatic urea sensor based on NiCo 2 O 4 nanoneedles
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- Amin, Sidra (författare)
- Luleå University of Technology, Sweden; University of Sindh, Pakistan´; Shaheed Benazir Bhutto University, Pakistan
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- Tahira, Aneela (författare)
- Luleå University of Technology, Sweden
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- Solangi, Amber (författare)
- University of Sindh, Pakistan
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- Beni, Valerio, 1972- (författare)
- RISE,Acreo
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- Morante, JR (författare)
- Catalonia Institute for Energy Research, Spain
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- Liu, Xianjie (författare)
- Linköping University, Sweden
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- Falhman, Mats (författare)
- Linköping University, Sweden
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- Mazzaro, Raffaello (författare)
- Luleå University of Technology, Sweden
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- Ibupoto, Zafar (författare)
- Luleå University of Technology, Sweden
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- Vomiero, Alberto (författare)
- Luleå University of Technology, Sweden
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(creator_code:org_t)
- 2019
- 2019
- Engelska.
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Ingår i: RSC Advances. - : Royal Society of Chemistry. - 2046-2069. ; 9:25, s. 14443-14451
- Relaterad länk:
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https://pubs.rsc.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We propose a new facile electrochemical sensing platform for determination of urea, based on a glassy carbon electrode (GCE) modified with nickel cobalt oxide (NiCo 2 O 4 ) nanoneedles. These nanoneedles are used for the first time for highly sensitive determination of urea with the lowest detection limit (1 μM) ever reported for the non-enzymatic approach. The nanoneedles were grown through a simple and low-temperature aqueous chemical method. We characterized the structural and morphological properties of the NiCo 2 O 4 nanoneedles by TEM, SEM, XPS and XRD. The bimetallic nickel cobalt oxide exhibits nanoneedle morphology, which results from the self-assembly of nanoparticles. The NiCo 2 O 4 nanoneedles are exclusively composed of Ni, Co, and O and exhibit a cubic crystalline phase. Cyclic voltammetry was used to study the enhanced electrochemical properties of a NiCo 2 O 4 nanoneedle-modified GCE by overcoming the typical poor conductivity of bare NiO and Co 3 O 4 . The GCE-modified electrode is highly sensitive towards urea, with a linear response (R 2 = 0.99) over the concentration range 0.01-5 mM and with a detection limit of 1.0 μM. The proposed non-enzymatic urea sensor is highly selective even in the presence of common interferents such as glucose, uric acid, and ascorbic acid. This new urea sensor has good viability for urea analysis in urine samples and can represent a significant advancement in the field, owing to the simple and cost-effective fabrication of electrodes, which can be used as a promising analytical tool for urea estimation.
Nyckelord
- Ascorbic acid
- Cobalt compounds
- Cost effectiveness
- Cyclic voltammetry
- Glass membrane electrodes
- Metabolism
- Nanoneedles
- Nickel oxide
- Self assembly
- Temperature
- Urea
- Concentration ranges
- Cost-effective fabrication
- Cubic crystalline
- Electrochemical sensing
- Glassy carbon electrodes
- Modified electrodes
- Nickel cobalt oxides
- Structural and morphological properties
- Urea electrodes
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- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Amin, Sidra
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Tahira, Aneela
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Solangi, Amber
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Beni, Valerio, 1 ...
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Morante, JR
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Liu, Xianjie
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visa fler...
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Falhman, Mats
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Mazzaro, Raffael ...
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Ibupoto, Zafar
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Vomiero, Alberto
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visa färre...
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RSC Advances
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