Synthesis and characterization of ultrasmall Cu2O nanoparticles on silica nanoparticles surface

Prajapati, Jagdish Prasad; Das, Debjit; Katlakunta, Sadhana; Maramu, N.; Ranjan, V.; Mallick, Sadhucharan

doi:10.1016/j.ica.2020.120069

Cited by 25 publications

(9 citation statements)

References 27 publications

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“…A Rietveld refinement of powder X-ray diffraction of CuO NPs was carried out using MAUD software using P6 3 /mmc space group and is shown in Figure 1 (b). [46] The lattice parameter EDS basically agree with the designed composition as shown in Figure 2(d).…”

Section: Synthesis and Characterization Of The Cuo Npssupporting

confidence: 71%

Biogenic Synthesis, Characterization, and Antifungal Activity Studies of Copper Oxide Nanoparticles Using Aqueous Extract of Moringa oleifera Leaves

Prasad Prajapati,

Toppo,

Majhi

et al. 2023

ChemistrySelect

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The present study reports the green synthesis of cupric oxide nanoparticles (CuO NPs) by an aqueous leaf extract of Moringa oleifera and the antifungal activity assessment of CuO NPs against the phytopathogenic fungi Aspergillus flavus and Aspergillus niger. The CuO NPs showed variable fungitoxic effects against A. flavus and A. niger. At higher doses (1 mg/mL), 83.51 % of mycelial inhibition was found against A. flavus, but 43.51 % was found against A. niger. The percentage inhibition of mycelial growth was found to be dose dependent. The cell viability analysis was carried out to reveal the mechanism of the fungitoxic effect of synthesized NPs and it was revealed that the CuO NPs caused oxidative stress associated with increased ROS production, leading to fungal cell death. The synthesized CuO NPs showed single phase cupric oxide with a monoclinic structure and highly uniform in size (3–5 nm). As the synthesized CuO NPs showed good stability under open atmospheric conditions and a fungitoxicity effect against A. flavus, they may be used to control fungal diseases in an eco‐friendly manner.

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Section: Synthesis and Characterization Of The Cuo Npssupporting

confidence: 71%

Biogenic Synthesis, Characterization, and Antifungal Activity Studies of Copper Oxide Nanoparticles Using Aqueous Extract of Moringa oleifera Leaves

Prasad Prajapati,

Toppo,

Majhi

et al. 2023

ChemistrySelect

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“…The particle size ranged from 5 to 2000 nm [35]. This method has evolved with time and made much more efficient and versatile in terms of controlling parameters and acquiring the desired properties [36,37]. Usually, the acid catalyzed systems produce gel structure whereas the Stober's method gives monodispersed silica particles [35].…”

Section: Synthesis Of Snps (Chemical Methods)mentioning

confidence: 99%

A Comprehensive Review of Synthesis, Applications and Future Prospects for Silica Nanoparticles (SNPs)

Akhter

Rao

Abbasi

et al. 2022

Silicon

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Silica nanoparticles (SNPs) have shown great applicability potential in a number of fields like chemical, biomedical, biotechnology, agriculture, environmental remediation and even wastewater purification. With remarkably instinctive properties like mesoporous structure, high surface area, tunable pore size/diameter, biocompatibility, modifiability and polymeric hybridizability, the SNPs are growing in their applicable potential even further. These particles are shown to be non-toxic in nature, hence safe to be used in biomedical research. Moreover, the molecular mobilizability onto the internal and external surface of the particles makes them excellent carriers for biotic and non-biotic compounds. In this respect, the present study comprehensively reviews the most important and recent applications of SNPs in a number of fields along with synthetic approaches. Moreover, despite versatile contributions, the applicable potential of SNPs is still a tip of the iceberg waiting to be exploited more, hence, the last section of the review presents the future prospects containing only few of the many gaps/research extensions regarding SNPs that need to be addressed in future work.

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“…Silica structures are often used as a matrix for nanoparticles [ 35 , 66 , 67 , 68 , 69 ] due to their thermodynamic and chemical stability in various chemical environments, low toxicity, biodegradability, optical transparency, and high surface area [ 34 , 69 , 70 ]. The presence of hydroxyl groups on the silica surface leads to high hydrophilicity and contributes to further functionalization [ 34 ].…”

Section: Silica Matrix: Synthetic Methods and Propertiesmentioning

confidence: 99%

Luminescent Composite Carbon/SiO2 Structures: Synthesis and Applications

et al. 2022

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Luminescent carbon nanostructures (CNSs) have attracted great interest from the scientific community due to their photoluminescent properties, structural features, low toxicity, and a great variety of possible applications. Unfortunately, a few problems hinder their further development. These include the difficulties of separating a mixture of nanostructures after synthesis and the dependence of their properties on the environment and the aggregate state. The application of a silica matrix to obtain luminescent composite particles minimizes these problems and improves optical properties, reduces photoluminescence quenching, and leads to wider applications. We describe two methods for the formation of silica composites containing CNSs: inclusion of CNSs into silica particles and their grafting onto the silica surface. Moreover, we present approaches to the synthesis of multifunctional particles. They combine the unique properties of silica and fluorescent CNSs, as well as magnetic, photosensitizing, and luminescent properties via the combination of functional nanoparticles such as iron oxide nanoparticles, titanium dioxide nanoparticles, quantum dots (QDs), and gold nanoclusters (AuNCs). Lastly, we discuss the advantages and challenges of these structures and their applications. The novelty of this review involves the detailed description of the approaches for the silica application as a matrix for the CNSs. This will support researchers in solving fundamental and applied problems of this type of carbon-based nanoobjects.

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Synthesis and characterization of ultrasmall Cu2O nanoparticles on silica nanoparticles surface

Cited by 25 publications

References 27 publications

Biogenic Synthesis, Characterization, and Antifungal Activity Studies of Copper Oxide Nanoparticles Using Aqueous Extract of Moringa oleifera Leaves

Biogenic Synthesis, Characterization, and Antifungal Activity Studies of Copper Oxide Nanoparticles Using Aqueous Extract of Moringa oleifera Leaves

A Comprehensive Review of Synthesis, Applications and Future Prospects for Silica Nanoparticles (SNPs)

Luminescent Composite Carbon/SiO2 Structures: Synthesis and Applications

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