Metal–organic frameworks (MOFs) composite of polyaniline-CNT@aluminum succinate for non-enzymatic nitrite sensor

Nitrite has been linked to a variety of health issues, as well as cancer and oxygen deficiency when its allowable limit is exceeded. Nitrite monitoring and detection are required due to the negative effects on public health. Metal–organic frameworks (MOFs)-based nanomaterials/composites have recentl...

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Bibliographic Details
Published in:Environmental science and pollution research international 2023-06, Vol.30 (27), p.71322-71339
Main Authors: Alsafrani, Amjad E., Adeosun, Waheed A., Alruwais, Raja Saad, Marwani, Hadi M., Asiri, Abdullah M., Khan, Anish
Format: Article
Language:English
Subjects:
Aluminum
Aluminum - analysis
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Bottled water
Carbon
Carbon nanotubes
Chemical sensors
Composite materials
Differential thermal analysis
Drinking water
Drinking Water - analysis
Drug delivery
Earth and Environmental Science
Ecotoxicology
Electrical conductivity
Electrical resistivity
Electrochemical Techniques - methods
Electrochemistry
Electrodes
Electrons
Environment
Environmental Chemistry
Environmental Health
Environmental science
Field emission microscopy
Fourier transforms
Fruit juices
Glassy carbon
Hypoxia
Infrared spectroscopy
Metal-Organic Frameworks
Nanocomposites
Nanocomposites - chemistry
Nanomaterials
Nanotechnology
Nanotubes, Carbon - chemistry
Nitrites
Nitrites - analysis
Oxidation
Photoelectron spectroscopy
Photoelectrons
Polyanilines
Public health
Research Article
Scanning electron microscopy
Spectroscopy, Fourier Transform Infrared
Spectrum analysis
Succinates - analysis
Succinic Acid
Thermal analysis
Voltammetry
Waste Water Technology
Water Management
Water Pollution Control
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:Nitrite has been linked to a variety of health issues, as well as cancer and oxygen deficiency when its allowable limit is exceeded. Nitrite monitoring and detection are required due to the negative effects on public health. Metal–organic frameworks (MOFs)-based nanomaterials/composites have recently been shown to have the potential for various biological and medical applications like sensing, imaging, and drug delivery. As a result, this research creates an efficient electrochemical sensor by incorporating MOFs into polyaniline (PANI)/carbon nanotube (CNT) cast on the GCE. In situ oxidative polymerization was used to construct an aluminum succinate MOF (Al-Succin)-incorporated CNT/PANI nanocomposite (PANI/CNT@Al-Succin) and well characterized by various characterization techniques, namely, field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric-differential thermal analysis (TGA-DTA), cyclic voltammetry (CV), and four probes to measure DC electrical conductivity. Cyclic voltammetry and linear sweep voltammetry techniques were employed to detect nitrite on the surface of PANI/CNT@Al-Succin-modified glassy carbon electrode (GCE). PANI/CNT@Al-Succin-modified GCE demonstrated good current response and electrocatalytic property towards nitrite compared to bare GCE. The newly synthesized electrode exhibited a high electrocatalytic activity towards nitrite oxidation and showed a linear response ranging from 5.7 to 74.1 μM for CV and 8.55–92.62 μM for LSV. The obtained LOD values for CV (1.16 μM) and LSV (0.08 μM) were significantly below the WHO-defined acceptable nitrite limit in drinking water. Results of recovery studies for real samples of apple juice, orange juice, and bottled water were 98.92%, 99.38%, and 99.90%, respectively. These values show practical usability of PANI/CNT@Al-Succin in real samples.
ISSN:1614-7499
0944-1344
1614-7499
DOI:10.1007/s11356-023-26965-8