Synthesis and characterization of ZnO nanoparticles by novel sol gel technique

Aslinjensipriya, A.; Narmadha, S.; Deepapriya, Subramanian; Rodney, John D.; Grace, Infantiya Stephen; Reena, R. Sylvia; Chamundeeswari, Anandan; José, María; Jerome, Das Savarimuthu

doi:10.1063/5.0009181

Cited by 14 publications

(7 citation statements)

References 9 publications

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“…The FTIR spectra depicted surface modification of the silica and reduced graphene with iron oxide and zinc oxide nanoparticles giving the conformity of Fe band at 625 cm −1 and 657 cm −1 . The sharp peak positioned at 680 cm is attributed to the ZnO(II) stretching bonds which agrees with the literature values of [31]. The XRD as well confirmed the 7 Journal of Nanomaterials polycrystalline nature of nanocomposites with the corresponding SAED images with the crystal size of 28.7 and 58.31 nm.…”

Section: Discussionsupporting

confidence: 88%

Synthesis of Mesoporous Silica and Graphene‐Based FeO and ZnO Nanocomposites for Nutritional Biofortification and Sustained the Productivity of Rice (Oryza sativa L.)

Durgude

Ram

Kumar

et al. 2022

Journal of Nanomaterials

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Considering nutrient delivery and micronutrient use efficiency problems, mesoporous nanosilica (mNs) and reduced graphene oxide (rGO)-based iron and zinc nanocomposites were formulated. Prepared nanocomposites were characterized for FTIR spectroscopy, XRD, FE-SEM, HR-TEM, and AAS to examine surface functional groups, morphology, and structural composition. XRD spectrum confirmation with SAED image of nanosilica and graphene oxide nanocomposites confirms the polycrystalline and crystalline nature with 30–70-nm crystal size. The SEM revealed that the modified surface of mesoporous nanosilica and reduced graphene oxide are well-distributed clusters and are composed of targeted micronutrients. The impact of nano Fe and Zn foliar application was evaluated on rice grain fortification, productivity, and micronutrient use efficiency. The iron and zinc uptake at 60 days after sowing (DAT) and at harvest was significantly increased with foliar application of mNs and rGO-based Zn at 30 ppm + Fe at 5 ppm nanocomposites as well as led to nutrient fortification by increasing grain uptake and content, with the application of 30 ppm zinc and 5 ppm iron through mNs resulted in an improvement of the rice grain yield by 53% over conventional fertilization. Besides significant increment in grain yield, foliar application of mNs and rGO-based nanocomposites (Zn at 30 ppm + Fe at 5 ppm) increased the Zn and Fe use efficiency by 527 and 380%, respectively, over conventional micronutrient fertilization (ZnSO4 and FeSO4).

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Section: Discussionsupporting

confidence: 88%

Synthesis of Mesoporous Silica and Graphene‐Based FeO and ZnO Nanocomposites for Nutritional Biofortification and Sustained the Productivity of Rice (Oryza sativa L.)

Durgude

Ram

Kumar

et al. 2022

Journal of Nanomaterials

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“…A symmetric stretching mode of vibrations of C-O was observed near 1256 cm −1 . The band observed at 1530 cm -1 is due to the symmetrical stretching of the carboxylate [61]. Formation of carboxylates is due to excessive energy during synthesis provided by organics.…”

Section: Photoluminescence Resultsmentioning

confidence: 99%

Formation Mechanism and Lattice Parameter Investigation for Copper-Substituted Cobalt Ferrites from Zingiber officinale and Elettaria cardamom Seed Extracts Using Biogenic Route

Barkat¹,

Afzal²,

Khan³

et al. 2022

Materials

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Biogenic routes for the synthesis of nanoparticles are environmentally friendly, nontoxic, biocompatible, and cost-effective compared to traditional synthesis methods. In this study, cobalt ferrite was synthesized using Zingiber officinale and Elettaria cardamom Seed extracts. Effect of copper contents (x = 0.0, 0.3, 0.6 and 0.9) on the plant extracted Cux(Co1−xFe2O4) was investigated by XRD, SEM, EDX, UV-Vis., PL, FE-SEM, FTIR and photocatalytic activity. XRD results revealed that nanoparticles exhibit a cubical spinel structure with an average diameter of 7–45 nm, calculated by the Debye Scherer formula. The value of the lattice parameter decreased from 8.36 Å to 8.08 Å with substitution of copper, which can be attributed to mismatch of ionic radii of Cu2+ (0.73 Å) and Co2+ (0.74 Å) ions. SEM analysis showed that nanoparticles exhibit a spherical shape (~13 nm diameter) for undoped samples and low Cu concentration, while they changed to a hexagonal structure at higher Cu concentration (x = 0.9) with a diameter ~46 nm and a decreased degree of agglomeration. FE-SEM further confirmed the nanoparticles’ size and shape. EDX analysis confirmed the presence of cobalt, iron, and oxygen without contamination. The optical absorption spectra of UV-vis and PL showed red-shift, which can be accredited to larger crystalline sizes of nanoparticles. FTIR spectra showed two main bands at 410 and 605 cm−1, indicating the presence of intrinsic vibrations of the octahedral and tetrahedral complexes, respectively. The photocatalytic activity of Co0.4Cu0.6 Fe2O4 nanoparticles was investigated using methylene blue (MB) and methyl orange (MO) dyes under visible light irradiation. The degradation rate (93.39% and 83.15%), regression correlation coefficient (0.9868 and 0.9737) and rate constant (0.04286 and 0.03203 rate·min−1) were calculated for MB and MO, respectively. Mechanisms for the formation and photocatalytic activity of Cu-substituted plant-extracted cobalt ferrite were discussed. The Co0.4Cu0.6 Fe2O4 nanoferrite was found to be an efficient photocatalyst, and can be exploited for wastewater treatment applications for MB/MO elimination.

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“…LSPR is an intrinsic behavior of metal nanostructure that has been previously reported by different research groups [ [32] , [33] , [34] , [35] ]. The local electromagnetic characteristic is remarkably magnified by many optical phenomena such as absorbing, scattering, transmission, etc.…”

Section: Introductionmentioning

confidence: 93%

pH regulated lactose inspired fabrication of zinc oxide nanoparticles for insulin sensing by LSPR absorption

Ahmed

Dey

Mustary

et al. 2023

Heliyon

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Synthesis and characterization of ZnO nanoparticles by novel sol gel technique

Cited by 14 publications

References 9 publications

Synthesis of Mesoporous Silica and Graphene‐Based FeO and ZnO Nanocomposites for Nutritional Biofortification and Sustained the Productivity of Rice (Oryza sativa L.)

Synthesis of Mesoporous Silica and Graphene‐Based FeO and ZnO Nanocomposites for Nutritional Biofortification and Sustained the Productivity of Rice (Oryza sativa L.)

Formation Mechanism and Lattice Parameter Investigation for Copper-Substituted Cobalt Ferrites from Zingiber officinale and Elettaria cardamom Seed Extracts Using Biogenic Route

pH regulated lactose inspired fabrication of zinc oxide nanoparticles for insulin sensing by LSPR absorption

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