Highly Sensitive Detection of Gallic Acid in Food Samples by Using Robust NiAl₂O₄ Nanocomposite Materials

Abstract

We have successfully synthesized nanostructured cubic NiAl 2 O 4 nanoparticles for the selective electrochemical determination of gallic acid (GA) and the prepared nanostructured composite material was characterized by (X-ray diffraction, Fourier transform infrared spectroscopy, and field-emission scanning electron microscopy analyses. The cubic NiAl 2 O 4 nanoparticles had average sizes of ∼ 26-30 nm as calculated from XRD and SEM measurements, respectively. GA-detection performance was also evaluated by cyclic voltammetry and amperometry method. NiAl 2 O 4 glassy carbon electrode showed excellent performance in GA detection with a linear range, detection limit (SNR = 3 sb/S), limit of quantitation (LOQ = 10 sd/S) and sensitivity value of 0.03-551.18 μM, 0.018 μM, 0.057 μM and 9.019 μM mA −1 cm −2 , respectively. The GA sensor was also used in real-sample analysis using food samples, and results showed the practicability of the proposed sensor.

Graphene quantum dots incorporated NiAl2O4 nanocomposite based molecularly imprinted electrochemical sensor for 5-hydroxymethyl furfural detection in coffee samples

“…The bands at 3500 cm −1 and 1690 cm −1 corresponded to the bending and stretching bands of the –OH groups. 9,32 In addition, FTIR peaks at 1690 cm −1 , 1410 cm −1 and 1290 cm −1 were assigned to the –CC–, –C–H and –C–O bonds, respectively. 33 On the NiAl 2 O 4 spectrum, two obvious absorption bands at 2450–3650 cm −1 and 500–850 cm −1 were attributed to the –OH and –CO groups and the metal–oxygen vibrational modes, respectively.…”

“…The bands at 3500 cm −1 and 1690 cm −1 corresponded to the bending and stretching bands of the -OH groups. 9,32 In addition, FTIR peaks at 1690 cm −1 , 1410 cm −1 and 1290 cm The porosities of GQD, NiAl 2 O 4 , and GQD-NiAl 2 O 4 nanocomposite were investigated by nitrogen adsorption-desorption experiments (Fig. 3B).…”

A dual‐mode optical assay for iron(II) and gallic acid based on Fenton reaction

“…For example, the methods used to detect iron(II) include chemiluminescence, [7,8] liquid chromatography, [9] colorimetry, [3,10] spectrophotometric, [11][12][13] flame atomic absorption spectrometry, [14] photothermal effect, [15] fluorescence analysis [16][17][18] and so on. Analysis and determination methods of GA include flow injection chemiluminescent method, [19] spectrophotometric, [20][21][22] isocratic column liquid chromatography, [23] differential pulse polarography, [24] colorimetry, [6,25] electrochemical method based on molecularly imprinted polymers, [26] fluorescence, [27,28] voltammetric method, [29][30][31] etc. Among these methods, fluorometry has many advantages such as simple operation, high sensitivity, and good reproducibility of determination results.…”

Electrochemical Investigation of Caffeine by Cerium Oxide Nanoparticle Modified Carbon Paste Electrode

“…The CeO 2 is used in abrasives, fuel cells, UV blockers, gate dielectric in metal-oxide semiconductor devices. [47][48][49][50][51][52][53] For the elimination of toxic auto-exhaust gases from vehicles it acts as three-way catalysts (TWC) supporter. [54][55][56] Cerium dioxide nanoparticles (CeO 2 NPs) have caught attention of researchers to build amperometry biosensors as they have high oxygen storage capacity, biocompatibility, high isoelectric point (IEP) (∼9.0) and chemical stability.…”

“…[54][55][56] Cerium dioxide nanoparticles (CeO 2 NPs) have caught attention of researchers to build amperometry biosensors as they have high oxygen storage capacity, biocompatibility, high isoelectric point (IEP) (∼9.0) and chemical stability. For biomedical purposes soluble cerium salts have been used due to their bactericidal activity, [50][51][52] from cerium nitrate a dermal burn cream is formulated, is advertised as medicine obtainable allover European countries. Earlier, for the formation of metal alloys, fuel cell oxidation catalysis and corrosion protection coatings cerium oxide nanoparticles (CeO 2 nanoparticles-CNPs) have been utilized.…”