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Performance analysis of three distinct Ni x V 2 O y single-phase nano self-assemblies for asymmetric supercapacitor fabrication and effective detection of low-concentration hazardous herbicide
Single-phase inorganic nanostructures with multiple applications are required for cost-effective, sustainable applications to save the environment from toxic activities. Nickel vanadate (Ni x V 2 O y ), possessing three phases, such as NiV 2 O 6 , Ni 2 V 2 O 7 , and Ni 3 V 2 O 8 , acts as an effecti...
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| Published in: | Dalton transactions : an international journal of inorganic chemistry 2023-10, Vol.52 (40), p.14491-14509 |
|---|---|
| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Single-phase inorganic nanostructures with multiple applications are required for cost-effective, sustainable applications to save the environment from toxic activities. Nickel vanadate (Ni
x
V
2
O
y
), possessing three phases, such as NiV
2
O
6
, Ni
2
V
2
O
7
, and Ni
3
V
2
O
8
, acts as an effective electrode material and potential electrochemical sensors. Nickel vanadate phases (NiV
2
O
6
, Ni
2
V
2
O
7
, and Ni
3
V
2
O
8
) were synthesized through the gel-matrix technique, and their phase purity, crystallinity, morphology, optical properties,
etc
., were evaluated and studied. Electrochemical studies infer that NiV
2
O
6
exhibits the highest specific capacity of 251 C g
−1
(69.7 mA h g
−1
) at 1 A g
−1
compared to the other nickel vanadate phases and provides better cyclic stability of 80.19% for 5000 cycles. The asymmetric supercapacitor device fabricated from NiV
2
O
6
results in a specific capacity of 189 C g
−1
(52.5 mA h g
−1
), energy density of 59.06 W h kg
−1
, and a power density of 1125 W kg
−1
with a capacitive retention rate of 74.91% and coulombic efficiency of 99.61% for 10 000 cycles. The electrochemical detection potential of Ni
x
V
2
O
y
in bifenox herbicide has been studied with all the synthesized nanostructures. Among them, NiV
2
O
6
-based sensor probes demonstrated excellent characteristics, including high sensing current and low detection limits of 0.6 nM with a linear range of 1–57 nM. The real-time herbicide detection of NiV
2
O
6
in live samples was checked with freshly harvested potatoes. This advancement further enhances the utilization of Ni
x
V
2
O
y
materials for electrochemical applications. |
|---|---|
| ISSN: | 1477-9226 1477-9234 |
| DOI: | 10.1039/D3DT02384B |