An investigation of structural, magnetical, optical, antibacterial and humidity sensing of Zr(MoO4)2-ZrO2 nanocomposites

Amanulla, A. Mobeen; Sundaram, R.; Kaviyarasu, K.

doi:10.1016/j.surfin.2019.06.001

Cited by 29 publications

(5 citation statements)

References 35 publications

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“…Graphene oxide often provides high chemical stability, a large surface area, and excellent dispersibility to composites, and when GO is combined with conducting polymers like polyaniline, polypyrrole, polythiophene, etc., it can yield excellent composites with enhanced properties and diverse applications . The composite benefits greatly from the inherent advantages of zirconium dioxide nanoparticles, including a stable surface area, redox properties, porosity, good mechanical strength, chemical inertness, a wide optical band gap, excellent thermal stability, pH stability, low toxicity, and biocompatibility . The composite of graphene oxide with zirconium oxide has been reported with versatile applications in sensing, photocatalysis, intracellular imaging, energy storage and cancer therapy .…”

Section: Introductionmentioning

confidence: 99%

Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Valsalakumar

Joseph

Piyus

et al. 2023

ACS Appl. Nano Mater.

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Modern clinical chemistry research has revealed a significant demand for materials that can be used in biomarker screening. Accordingly, we have developed a simple enzyme-free electrochemical sensor for the detection of L-Tyrosine (L-Tyr) based on the enhanced electrocatalytic activity of a novel ternary nanocomposite material. The nanocomposite was prepared by decorating zirconium dioxide (ZrO 2 ) nanoparticles onto a polyaniline−graphene oxide composite, which was subsequently named as PGZ, incorporating the first letters from polyaniline, graphene oxide, and zirconium dioxide. Electrodes modified with the new material could selectively detect L-Tyr at physiological pH in the presence of common interfering biomolecules. Differential pulse voltammetric studies with the sensor showed a satisfactory linear response for L-Tyr in the range of 100 nM−250 μM and a very low detection limit of 2 nM. The modified electrode was conveniently fabricated, which displayed excellent sensitivity, selectivity, and reproducibility. It could also successfully detect the amino acid in human blood samples. The miniaturization of electrochemical assembly was performed by modifying the screenprinted electrode (SPE) with the PGZ composite, which may be further extended to the manufacture of devices for the highly sensitive and selective detection of L-Tyr in various biological samples.

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Section: Introductionmentioning

confidence: 99%

Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Valsalakumar

Joseph

Piyus

et al. 2023

ACS Appl. Nano Mater.

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“…Furthermore, the same research team synthesized and characterized stannous molybdate and discussed its antimicrobial properties 5 . Numerous other molybdate systems have been studied for their antimicrobial properties 6 – 10 .…”

Section: Introductionmentioning

confidence: 99%

“…Generally, several methods were used to prepare CM nanoparticles 4 , 5 , 10 . The nano-characteristics of Cu 3 (MoO 4 ) 2 (OH) 2 is a topic worthy of further study, and related research results have been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Highly stable and antifungal properties on the oilseed rape of Cu3(MoO4)2(OH)2 nanoflakes prepared by simple aqueous precipitation

Xu,

Lisha,

et al. 2024

Sci Rep

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In the last few decades, nanoparticles have been a prominent topic in various fields, particularly in agriculture, due to their unique physicochemical properties. Herein, molybdenum copper lindgrenite Cu3(MoO4)2(OH)2 (CM) nanoflakes (NFs) are synthesized by a one-step reaction involving α-MoO3 and CuCO3⋅Cu(OH)2⋅xH2O solution at low temperature for large scale industrial production and developed as an effective antifungal agent for the oilseed rape. This synthetic method demonstrates great potential for industrial applications. Infrared spectroscopy and X-ray diffraction (XRD) results reveal that CM samples exhibit a pure monoclinic structure. TG and DSC results show the thermal stable properties. It can undergo a phase transition form copper molybdate (Cu3Mo2O9) at about 300 °C. Then Cu3Mo2O9 nanoparticles decompose into at CuO and MoO3 at 791 °C. The morphology of CM powder is mainly composed of uniformly distributed parallelogram-shaped nanoflakes with an average thickness of about 30 nm. Moreover, the binding energy of CM NFs is measured to be 2.8 eV. To assess the antifungal properties of these materials, both laboratory and outdoor experiments are conducted. In the pour plate test, the minimum inhibitory concentration (MIC) of CM NFs against Sclerotinia sclerotiorum (S. sclerotiorum) is determined to be 100 ppm, and the zone of inhibiting S. sclerotiorum is 14 mm. When the concentration is above 100 nm, the change rate of the hyphae circle slows down a little and begins to decrease until to 200 ppm. According to the aforementioned findings, the antifungal effects of a nano CM NFs solution are assessed at different concentrations (0 ppm (clear water), 40 ppm, and 80 ppm) on the growth of oilseed rape in an outdoor setting. The results indicate that the application of CM NFs led to significant inhibition of S. sclerotiorum. Specifically, when the nano CM solution was sprayed once at the initial flowering stage at a concentration of 80 ppm, S. sclerotiorum growth was inhibited by approximately 34%. Similarly, when the solution was sprayed once at the initial flowering stage and once at the rape pod stage, using a concentration of 40 ppm, a similar level of inhibition was achieved. These outcomes show that CM NFs possess the ability to bind with more metal ions due to their larger specific surface area. Additionally, their semiconductor physical properties enable the generation of reactive oxygen species (ROS). Therefore, CM NFs hold great potential for widespread application in antifungal products.

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“…Recently, studies demonstrated the feasibility of materials containing Mo in its formulation with high antimicrobial activity [ 4 , 5 ], called molybdates, which have an important role in the structure and function of metal or proteins in certain biological systems [ 6 , 7 , 8 ]. Articles have recently been published on the antimicrobial properties of silver molybdates [ 9 ], lead [ 10 ], copper [ 2 ], zirconium [ 11 ], titanium [ 12 ], iron [ 13 ], and zinc [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Insights into the Antimicrobial Activity of Hydrated Cobaltmolybdate Doped with Copper

Silva

Rios

et al. 2021

Molecules

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Molybdates are biocidal materials that can be useful in coating surfaces that are susceptible to contamination and the spread of microorganisms. The aim of this work was to investigate the effects of copper doping of hydrated cobalt molybdate, synthesized by the co-precipitation method, on its antibacterial activity and to elucidate the structural and morphological changes caused by the dopant in the material. The synthesized materials were characterized by PXRD, Fourier Transformed Infrared (FTIR), thermogravimetric analysis/differential scanning calorimetry (TG/DSC), and SEM-Energy Dispersive Spectroscopy (SEM-EDS). The antibacterial response of the materials was verified using the Minimum Inhibitory Concentration (MIC) employing the broth microdilution method. The size of the CoMoO4·1.03H2O microparticles gradually increased as the percentage of copper increased, decreasing the energy that is needed to promote the transition from the hydrated to the beta phase and changing the color of material. CoMoO4·1.03H2O obtained better bactericidal performance against the tested strains of Staphylococcus aureus (gram-positive) than Escherichia coli (gram- negative). However, an interesting point was that the use of copper as a doping agent for hydrated cobalt molybdate caused an increase of MIC value in the presence of E. coli and S. aureus strains. The study demonstrates the need for caution in the use of copper as a doping material in biocidal matrices, such as cobalt molybdate.

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An investigation of structural, magnetical, optical, antibacterial and humidity sensing of Zr(MoO4)2-ZrO2 nanocomposites

Cited by 29 publications

References 35 publications

Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Highly stable and antifungal properties on the oilseed rape of Cu3(MoO4)2(OH)2 nanoflakes prepared by simple aqueous precipitation

Insights into the Antimicrobial Activity of Hydrated Cobaltmolybdate Doped with Copper

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An investigation of structural, magnetical, optical, antibacterial and humidity sensing of Zr(MoO4)2-ZrO2 nanocomposites

Cited by 29 publications

References 35 publications

Polyaniline–Graphene Oxide Composites Decorated with ZrO2 Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Polyaniline–Graphene Oxide Composites Decorated with ZrO2 Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Highly stable and antifungal properties on the oilseed rape of Cu3(MoO4)2(OH)2 nanoflakes prepared by simple aqueous precipitation

Insights into the Antimicrobial Activity of Hydrated Cobaltmolybdate Doped with Copper

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Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing

Polyaniline–Graphene Oxide Composites Decorated with ZrO₂ Nanoparticles for Use in Screen-Printed Electrodes for Real-Time l-Tyrosine Sensing