Neem gum (Azadirachta indicia) facilitated green synthesis of TiO2 and ZrO2 nanoparticles as antimicrobial agents

Korde, Sonali A.; Thombre, Premkumar B.; Dipake, Sudarshan S.; Sangshetti, Jaiprakash N.; Rajbhoj, Anjali S.; Gaikwad, Suresh T.

doi:10.1016/j.inoche.2023.110777

Cited by 14 publications

(8 citation statements)

References 57 publications

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“…The peak of 1621 cm −1 corresponds to bonding vibrations of the water adsorbed [68]. The band observed at 2194 cm −1 is assigned to the various carbonyl groups present in films [69]. The characteristic peaks at 2300 cm −1 and 2372 cm −1 are attributed to the trace of CO 2 adsorption on the sample [70].…”

Section: Ftir Spectroscopic Analysismentioning

confidence: 94%

“…The characteristic peaks at 2300 cm −1 and 2372 cm −1 are attributed to the trace of CO 2 adsorption on the sample [70]. The band at 2841 cm −1 indicates the asymmetric stretching vibrations of -CH [69]. The absorption bands at 2927 cm −1 and 3439 cm −1 are due to the stretching vibrations of the water molecule OH groups [71].…”

Section: Ftir Spectroscopic Analysismentioning

confidence: 97%

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Photocatalytic Activities of Methylene Blue Using ZrO2 Thin Films at Different Annealing Temperatures

Acosta-Silva,

Gallardo-Hernández,

Rivas

et al. 2024

Coatings

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Tetragonal ZrO2, synthesized by the sol–gel method and dip-coating technique, was found to be photocatalytically active for the degradation of methylene blue. The ZrO2 thin films were characterized by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and UV-vis spectroscopy. The photocatalytic degradation of methylene blue was carried out with this material. We identified the tetragonal phase in ZrO2 thin film at different annealing temperatures from 400 °C to 550 °C. The XRD study indicated that the films were monocrystalline in nature with preferred grain orientation along (011) plane and exhibited a tetragonal crystal structure. The crystallite size of the films increased with increasing annealing temperature. FTIR explained the bonding nature and confirmed the formation of the composite. UV-Vis showed the optical absorbance was high in the visible region and the optical band gap value increased with annealing temperature. The photocatalytic experimental results revealed that ZrO2 thin films degraded MB by 20%, 24%, 29%, and 36%, with annealing temperatures of 400 °C at 550 °C for 10 h, respectively. Our results provide useful insights into the development of photocatalytic materials and degradation of methylene blue.

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Section: Ftir Spectroscopic Analysismentioning

confidence: 94%

Section: Ftir Spectroscopic Analysismentioning

confidence: 97%

Photocatalytic Activities of Methylene Blue Using ZrO2 Thin Films at Different Annealing Temperatures

Acosta-Silva,

Gallardo-Hernández,

Rivas

et al. 2024

Coatings

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“…Zirconium (ZrNPs) nanoparticles can be synthesized by green chemistry methods with high purity using plant-based extracts for diverse applications, such as antimicrobial and dye photocatalytic degradation [86]. They can be prepared from various precursors, including zirconium isopropoxide [87], zirconylchloride octahydrate [88], zirconyl nitrate [84], and zirconyl chloride [89]. After mixing a Zr precursor and plant extract, color changes from yellow to brown [89] or milky white formation indicates the formation of ZrNPs [88].…”

Section: Zirconium Nanoparticlesmentioning

confidence: 99%

Plant-Based Extracts as Reducing, Capping, and Stabilizing Agents for the Green Synthesis of Inorganic Nanoparticles

Villagrán,

Anaya-Esparza,

Velázquez-Carriles

et al. 2024

Resources

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The synthesis of inorganic nanoparticles for diverse applications is an active research area that involves physical and chemical methods, which typically are expensive, involve hazardous chemical reagents, use complex equipment and synthesis conditions, and consume large amounts of time and energy. Thus, green synthesis methods have emerged as eco-friendly and easy alternatives for inorganic nanoparticle synthesis, particularly the use of plant-based extracts from fruit juice, leaves, seeds, peel, stem, barks, and roots, which act as reducing, capping, and stabilizing agents, contributing to the Sustainable Development Goals and circular economy principles. Therefore, diverse inorganic nanoparticles have been synthesized using plant-based extracts, including gold, silver, titanium dioxide, zinc, copper, platinum, zirconium, iron, selenium, magnesium, nickel, sulfur, cobalt, palladium, and indium nanoparticles, which exhibit different biological activities such as antioxidant, antimicrobial, dye degradation, cytotoxic, analgesic, sedative, wound-healing, skin protection, sensor development, and plant-growth-promoting effects. Therefore, this review summarizes the advantages and limitations of plant-based extracts as reducing, capping, and stabilizing agents for inorganic nanoparticle green synthesis.

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“…This damage to protein and DNA in the bacterial system cuts off their communications and food systems and leads to bacterial cell death [ 67 ]. The antibacterial effect of ZrO 2 NPs is attributed generally to the rupturing of the outer bacterial membranes by ROS, mostly OH radicals, which results in phospholipid per oxidation and finally causes cell death [ 68 ]. The cell wall of the Gram-negative bacteria, e.g., K. pneumonia, is composed of a peptidoglycan thin layer and has a lipid membrane outside.…”

Section: Biomedical Applications Of Zro 2 Npsmentioning

confidence: 99%

Biomedical Applications of Zirconia-Based Nanomaterials: Challenges and Future Perspectives

Bannunah

2023

Molecules

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ZrO2 nanoparticles have received substantially increased attention in every field of life owing to their wide range of applications. Zirconium oxide is a commercially economical, non-hazardous, and sustainable metal oxide having diversified potential applications. ZrO2 NPs play a vast role in the domain of medicine and pharmacy such as anticancer, antibacterial, and antioxidant agents and tissue engineering owing to their reliable curative biomedical applications. In this review article, we address all of the medical and biomedical applications of ZrO2 NPs prepared through various approaches in a critical way. ZrO2 is a bio-ceramic substance that has received increased attention in biomimetic scaffolds owing to its high mechanical strength, excellent biocompatibility, and high chemical stability. ZrO2 NPs have demonstrated potential anticancer activity against various cancer cells. ZrO2-based nanomaterials have exhibited potential antibacterial activity against various bacterial strains and have also demonstrated excellent antioxidant activity. The ZrO2 nanocomposite also exhibits highly sensitive biosensing activity toward the sensing of glucose and other biological species.

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Neem gum (Azadirachta indicia) facilitated green synthesis of TiO2 and ZrO2 nanoparticles as antimicrobial agents

Cited by 14 publications

References 57 publications

Photocatalytic Activities of Methylene Blue Using ZrO2 Thin Films at Different Annealing Temperatures

Photocatalytic Activities of Methylene Blue Using ZrO2 Thin Films at Different Annealing Temperatures

Plant-Based Extracts as Reducing, Capping, and Stabilizing Agents for the Green Synthesis of Inorganic Nanoparticles

Biomedical Applications of Zirconia-Based Nanomaterials: Challenges and Future Perspectives

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