Low-temperature synthesis of copper oxide (CuO) nanostructures with temperature-controlled morphological variations

Gacia, Przemysław D.; Shrestha, Lok Kumar; Bairi, Partha; Sanchez‐Ballester, Noelia M.; Hill, Jonathan P.; Boczkowska, Anna; Abe, Hideki

doi:10.1016/j.ceramint.2015.03.323

Cited by 17 publications

(2 citation statements)

References 41 publications

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“…Metal oxides are an important class of inorganic materials that often reveal a wide variety of phenomena and structures properties . In recent years, ZnO NPs have attracted researchers due to its semiconducting, antimicrobial, UV filtering, photochemical, and catalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Zinc oxide supported silver nanoparticles as a heterogeneous catalyst for production of biodiesel from palm oil

Laskar

Rokhum

Gupta

et al. 2019

Env Prog and Sustain Energy

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Biodiesel, also called fatty acid methyl esters (FAME), a promising alternative to petroleum diesel, has become more attractive in recent years due to its environmental friendliness coupled with its accessibility from renewable resources. This work investigated the novel zinc oxide supported silver nanoparticles (ZnO@Ag NPs) catalyzed transesterification of palm oil to biodiesel. Novel ZnO@Ag NPs were synthesized via homogeneous precipitation of Zn(OH) 2 and reduction of Ag(I) to Ag (0).During the preparation of nanocatalyst, polyethylene glycol (PEG 4000) played a dual role as both the surfactant and reducing agent. The synthesized NPs were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and BET analysis. Biodiesel formation was confirmed by 1 H and 13 C NMR spectroscopic analysis. In addition, different constituents of FAME were identified using GC-MS analytical technique. Under the optimum reaction conditions (methanol to oil ratio, 10:1, catalyst loading, 10 wt%, temperature 60 C and time, 60 min), the percentage conversion of triglycerides to corresponding FAME was 97% as determined by 1 H NMR.Catalyst recyclability tests confirmed that ZnO@Ag NPs could be reused at least for five successive cycles without appreciable loss in its activity. K E Y W O R D Sbiodiesel, heterogeneous catalyst, polyethylene glycol, renewable energy, transesterification

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Section: Introductionmentioning

confidence: 99%

Zinc oxide supported silver nanoparticles as a heterogeneous catalyst for production of biodiesel from palm oil

Laskar

Rokhum

Gupta

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…Nowadays, among nanoparticles, metal oxides are the most common [ 19 – 21 ]. Copper(II) oxide is one of these transition metal oxides that are particularly interesting due to its unique properties, such as being nontoxic at low concentrations, stable, affordable, abundant, and easy preparation with numerous sizes and shapes [ 22 , 23 ]. The green synthesis protocol of CuO is regarded as a suitable and ecologically acceptable alternative to the chemical method (which uses toxic chemicals as stabilizing or reducing agents) [ 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

The Molluscicidal Activity of Green Synthesized Copper Oxide–Based Annona squamosa Seed Extract Nanoparticles on the Feeding Behavior, Biochemical, Molecular, and Immunohistochemical Alterations of Biomphalaria alexandrina Snails

Hussein,

Abd El-latif,

Saad El-Din

et al. 2023

Biol Trace Elem Res

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Because of their low ecological impact, plant molluscicides have garnered much attention. The work aimed to find out if Annona squamosa (AS) seed extract has a molluscicidal impact on Biomphalaria alexandrina snails and enhances this extract by adding CuO nanoparticles (NPs). Using a scanning electron microscope (SEM), transmission electron microscope (TEM), and PANalytical X’Pert PRO X-ray diffractometer (XRD), the presence of the green A. squamosa-based CuO NPs (AS-CuO NPs) was confirmed. After 24 h of exposure, the half-lethal concentration (LC50) of AS-CuO NPs was more toxic to mature B. alexandrina than the aqueous extract of AS seeds (LC50: 119.25 mg/L vs. 169.03 mg/L). The results show that snails exposed to sublethal doses of AS-CuO NPs at LC10 or LC25 (95.4 or 106.7 mg/L, respectively) had much higher glucose levels and alkaline phosphatase activity than those not exposed. Nevertheless, there was no discernible change in the protein content in general or glycogen phosphorylase production. Histological and immunohistochemical analysis showed that snails exposed to A. squamosa-derived CuO NPs LC10 had shrinking digestive tubules and degeneration as well as vacuolation of many digestive, secretory, ova, and sperm cells, with PCNA expressing positively in the hermaphrodite gland and digestive tubule cells. The toxic profile of green CuO NPs produced by A. squamosa may damage the biological activity of B. alexandrina snails; thus, this compound could be used as a molluscicidal base. Furthermore, B. alexandrina proved to be a useful biomarker of nanomaterial contamination.

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Nanoporous Transition Metal Oxide-Based Electrodes for Supercapacitor Application

Patil

et al. 2021

Chemically Deposited Nanocrystalline Metal Oxide Thin Films

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Low-temperature synthesis of copper oxide (CuO) nanostructures with temperature-controlled morphological variations

Cited by 17 publications

References 41 publications

Zinc oxide supported silver nanoparticles as a heterogeneous catalyst for production of biodiesel from palm oil

Zinc oxide supported silver nanoparticles as a heterogeneous catalyst for production of biodiesel from palm oil

The Molluscicidal Activity of Green Synthesized Copper Oxide–Based Annona squamosa Seed Extract Nanoparticles on the Feeding Behavior, Biochemical, Molecular, and Immunohistochemical Alterations of Biomphalaria alexandrina Snails

Nanoporous Transition Metal Oxide-Based Electrodes for Supercapacitor Application

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