Anionic acid functionalized mesoporous γ- Al2O3 nanorods: Preparation, physicochemical and biological characterizations

Arunarajeswari, P.; Mathavan, T.; Jeyaseelan, S.; Divya, A.; Benial, A. Milton Franklin

doi:10.1016/j.cdc.2021.100819

Cited by 4 publications

(6 citation statements)

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“…The chemical precipitation method [ 37 ] and microwave heating [ 19 , 38 ] are also widely used for synthesis of metal oxide nanoparticles, including AlOxNPs. The chemical precipitation method is simple, cost-efficient, and does not require high-technology equipment [ 39 ]. Special attention is given to the AlOxNP “green synthesis” methods including the use of plant extracts during AlOxNP chemical synthesis, generally, as a reducing agent.…”

Section: Literature Reviewmentioning

confidence: 99%

A Mini Review of Antibacterial Properties of Al2O3 Nanoparticles

et al. 2022

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Bacterial antibiotic resistance is one of the most serious modern biomedical problems that prioritizes the search for new agents to combat bacterial pathogens. It is known that nanoparticles of many metals and metal oxides can have an antibacterial effect. However, the antibacterial efficacy of aluminum oxide nanoparticles has been studied little compared to the well-known antimicrobial properties of nanoparticles of oxides of metals such as zinc, silver, iron, and copper. In this review, we have focused on the experimental studies accumulated to date demonstrating the antibacterial effect of aluminum oxide nanoparticles. The review discusses the main ways of synthesis and modification of these nanoparticles, provides the proposed mechanisms of their antibacterial action against gram-positive and gram-negative bacteria, and also compares the antibacterial efficacy depending on morphological characteristics. We have also partially considered the activity of aluminum oxide nanoparticles against water microalgae and fungi. In general, a more detailed study of the antibacterial properties of aluminum oxide nanoparticles is of great interest due to their low toxicity to eukaryotic cells.

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Section: Literature Reviewmentioning

confidence: 99%

A Mini Review of Antibacterial Properties of Al2O3 Nanoparticles

et al. 2022

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“…Additionally, the organic compounds present in the M.arvensis extract can influence the surface chemistry of the doped Nb-N-TiO 2 NPs. For instance, functional groups such as hydroxyl (− OH) and carbonyl (C=O) groups can undergo chemical reactions with the surface atoms of the doped NPs, leading to surface functionalization and modification of their physicochemical properties [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

“…The comprehension of the functional groups inherent to the botanical constituents responsible for capping, reducing, and stabilizing Nb-N-TiO 2 was systematically achieved through Advanced, Ultra-Compact Fourier-transform infrared (FTIR) by Bruker [ 28 ]. In a summary of the methodology, the reaction blend containing the three different materials, ethanolic M. arvensis extracts, pure Nb-N-TiO 2 , and functionalized Nb-N-TiO 2 , was subjected to a centrifugal force of 8000 revolutions per minute (rpm), persisting for 10 min [ 47 ].…”

Section: Characterization Of Nb-n-tio 2 Npsmentioning

confidence: 99%

“…After this incubation period, a color change was observed, as the solution's color transitioned from an initial purple to a vibrant yellow, indicative of the DPPH radical scavenging activity [ 27 ]. The quantitative assessment of this transformation was evaluated through absorbance measurements at a wavelength of 519 nm, carried out by the instrumentality of a Spark multi-plate reader (Tecan) [ 28 ]. It is of notable significance to underscore that L-Ascorbic Acid (LAA) was entitled as the positive control in this antioxidant assessment, anchoring the scientific reliability and robustness of the study [ 29 ].…”

Section: Characterization Of Nb-n-tio 2 Npsmentioning

confidence: 99%

“…Leveraging M. arvensis ethanolic leaf extracts as doped nanoparticle functionalization agents epitomizes the "Functionalization" approach. This methodology offers many advantages, including cost-effectiveness and scalability, while diminishing the necessity for hazardous chemicals [ 28 ]. However, it is imperative to note that research about the antioxidant properties of doped TiO 2 nanoparticles functionalized with M. arvensis ethanolic leaf extracts remains in its nascent stages [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of niobium nitrogen-doped titanium dioxide (TiO2) nanoparticles with ethanolic extracts of Mentha arvensis

Farooqi,

Bhatti

et al. 2024

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Titanium dioxide (TiO2) nanoparticles have gained significant attention due to their wide-ranging applications. This research explores an approach to functionalize Niobium Nitrogen Titanium Dioxide nanoparticles (Nb-N-TiO2 NPs) with Mentha arvensis ethanolic leaf extracts. This functionalization allows doped NPs to interact with the bioactive compounds in extracts, synergizing their antioxidant activity. While previous studies have investigated the antioxidant properties of TiO2 NPs synthesized using ethanolic extracts of Mentha arvensis, limited research has focused on evaluating the antioxidant potential of doped nanoparticles functionalized with plant extracts. The characterization analyses are employed by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Ultraviolet–visible (UV–Vis) spectroscopy to evaluate these functionalized doped nanoparticles thoroughly. Subsequently, the antioxidant capabilities through the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP) assays have been assessed. Within functionalized Nb-N-TiO2, the FTIR has a distinctive peak at 2350, 2010, 1312, 1212, and 1010 cm−1 with decreased transmittance associated with vibrations linked to the Nb-N bond. SEM revealed a triangular aggregation pattern, 500 nm to 2 µm of functionalized Nb-N-TiO2 NPs. Functionalized doped Nb-N-TiO2 NPs at 500 µg mL−1 exhibited particularly robust antioxidant activity, achieving an impressive 79% efficacy at DPPH assessment; meanwhile, ferric reduction efficiency of functionalized doped Nb-N-TiO2 showed maximum 72.16%. In conclusion, doped Nb-N-TiO2 NPs exhibit significantly enhanced antioxidant properties when functionalized with Mentha arvensis ethanolic extract compared to pure Nb-N-TiO2 manifested that doped Nb-N-TiO2 have broad promising endeavors for various biomedicine applications.

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