Ficus retusa-stabilized gold and silver nanoparticles: Controlled synthesis, spectroscopic characterization, and sensing properties

Zayed, Mervat F.; Eisa, Wael H.; El-Kousy, Salah M.; Mleha, Walaa K.; Kamal, Nermeen

doi:10.1016/j.saa.2019.02.042

Cited by 55 publications

(27 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several articles described the significant role of phenolic compounds in the reduction capacity of plant extracts [51,52]. erefore, the total phenolic (TPC) and flavonoid contents of the extracts were investigated (Figure 4).…”

Section: By-products Of Plant Food Processing For the Manufacture Of Nanomaterialsmentioning

confidence: 99%

“…e FT-IR spectrum of the samples under the study had almost the same set of absorption bands and differed only in the intensity and slight shift of some bands. FT-IR spectra of grape pomace and pomegranate peel extracts before reaction showed several peaks at around 3400 cm −1 which can be assigned to ] (OH) vibrations of polyphenols [4,9,52]. e peaks at 1620 cm −1 , 1140 cm −1 , 1360 cm −1 , and 1050 cm −1 corresponds to the ] (C�O), while the absorptions at 1652 cm −1 may be referred to C�C vibrations or aromatic ring ] (C�C).…”

Section: Spectrophotometric Characterization Of Ag-npsmentioning

confidence: 99%

“…e peaks at 1620 cm −1 , 1140 cm −1 , 1360 cm −1 , and 1050 cm −1 corresponds to the ] (C�O), while the absorptions at 1652 cm −1 may be referred to C�C vibrations or aromatic ring ] (C�C). Absorption bands at 2910 cm −1 are attributed to C-H bonds in aldehydes [31,52].…”

Section: Spectrophotometric Characterization Of Ag-npsmentioning

confidence: 99%

See 2 more Smart Citations

Valorization of Food Waste to Produce Eco‐Friendly Means of Corrosion Protection and “Green” Synthesis of Nanoparticles

Vasyliev

Vorobyova

2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Agrifood by-products are a key element within Europe’s sustainable strategies. Valorization and reuse of zero-waste technologies are becoming more popular, and they are commonly named as “second-generation food waste management.” The present study is directed to the valuable extracts of “green” organic compounds from the by-products of fruit and berry/vegetable crops, which can be revalorized in sustainable chemical technology and engineering, namely, in the production of “green” synthesis of nanoparticles and for the inhibition of corrosion and scaling of metals in corrosive media. Numerous types of agrifood by-products (rapeseed pomace, sugar beet pulp, fodder radish cake, grape pomace, and pomegranate peels) were investigated. The waste extracts for corrosion and scale inhibitors of mild steel in tap water were prepared by the conventional extraction method that uses 2-propanol and characterized by gas chromatography-mass spectroscopy (GC-MS). Inhibition of scaling and corrosion was investigated in thermal scaling conditions on the surface of the electrode manufactured from mild steel. The LPR technique was applied to measure the corrosion rate, and the scaling rate was determined gravimetrically. The extracts were found to inhibit the corrosion rate 2-3 times, while only radish cake extract inhibited both the corrosion and scaling rates. The waste extracts to produce nanoparticles were prepared by the ultrasound-assisted water extraction with subsequent oxidation by oxygen purge and characterized by liquid chromatography-mass spectroscopy (LC-MS). The aqueous grape pomace and pomegranate peel extracts were screened for total phenolic content (TPC) and total flavonoid content (TFC). The reduction capacity of the extracts was assessed using ferric reducing power (FRAP) and phosphomolybdenum (PM) assays. AgNPs were characterized by UV-Vis spectroscopy, dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDX) analysis. The particle size of AgNPs ranged between 40 and 50 nm. The antimicrobial activity of AgNPs was tested against Escherichia coli using the agar diffusion method and optical density.

show abstract

Section: By-products Of Plant Food Processing For the Manufacture Of Nanomaterialsmentioning

confidence: 99%

Section: Spectrophotometric Characterization Of Ag-npsmentioning

confidence: 99%

See 1 more Smart Citation

Valorization of Food Waste to Produce Eco‐Friendly Means of Corrosion Protection and “Green” Synthesis of Nanoparticles

Vasyliev

Vorobyova

2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Supporting Information for this article can be found under DOI: 10.1002/ceat.202000292. This section includes additional references to primary literature relevant for this research [17][18][19][20][21][22][23].…”

Section: Supporting Informationmentioning

confidence: 99%

Effects of Various Energy Suppliers in Green Processes for Obtaining Silver Nanoparticles

Pulit-Prociak

Staroń

et al. 2020

Chem Eng & Technol

View full text Add to dashboard Cite

The productions of stable suspensions of silver nanoparticles using a microwave reactor, an ultraviolet (UV) reactor, a low‐frequency low‐temperature plasma reactor, a high‐pressure reactor, and an open reactor are compared. All reactors served as sources of energy for stimulating the nanoparticle growth process. The silver nanoparticles were obtained based on the chemical reduction method. The processes were conducted using gallic acid as the reducing‐stabilizing substance. The influence of the variable parameters time (for all types of reactors), temperature (for the open and high‐pressure reactors), power (for the microwave reactor), energy density (for the UV reactor), and voltage (for the low‐frequency low‐temperature plasma reactor) was investigated. Temperature was found to be the most important factor influencing all processes.

show abstract

“…Owing to the big diversity of plant species and the huge number of phytochemicals in plant extracts, the actual chemical mechanisms and procedure of the green synthesis of NPs are still unclear. Previously, plants extract have been utilized for the controlled synthesis of Ag and Au NPs [22]. Similarly, ethanol, isopropyl alcohol, and water have been used as extraction solvents (from the leaves of Paulownia tomentosa) for the preparation of Ag NPs [23].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver and gold nanoparticles using Crataegus oxyacantha extract and their urease inhibitory activities

Ali

Bacha

Shah

et al. 2020

Biotech and App Biochem

View full text Add to dashboard Cite

This study reports the green synthesis and urease inhibitory activities of Ag and Au nanoparticles (NPs) using Crataegus oxyacantha extract. The synthesized NPs were characterized by UV–visible, FT‐IR spectroscopy, atomic force microscopy, and scanning electron microscopy. The obtained NPs were spherical in shape, and their size was around 85 nm. A strong correlation between the phytochemicals present in the extract and their capability for the synthesis of NPs was observed. Furthermore, the shape, size, stability, and bioactivity of the NPs were strongly influenced by the stabilizing phytochemicals. The experimental analysis suggested that these NPs have substantial stability in a diverse range of physiological conditions such as pH, salinity, and temperature. The NPs exhibited potent urease enzyme inhibitory activities with percent inhibition of 99.25 and IC50 value of 1.38 ± 0.3, comparable to the standard (thiourea percent inhibition, that is, 98.2% and IC50 value 5.3 ± 0.04). These results suggested that the proposed NPs could be used in the homeopathic and pharmaceutical industries for biomedical applications.

show abstract

Ficus retusa-stabilized gold and silver nanoparticles: Controlled synthesis, spectroscopic characterization, and sensing properties

Cited by 55 publications

References 88 publications

Valorization of Food Waste to Produce Eco‐Friendly Means of Corrosion Protection and “Green” Synthesis of Nanoparticles

Valorization of Food Waste to Produce Eco‐Friendly Means of Corrosion Protection and “Green” Synthesis of Nanoparticles

Effects of Various Energy Suppliers in Green Processes for Obtaining Silver Nanoparticles

Green synthesis of silver and gold nanoparticles using Crataegus oxyacantha extract and their urease inhibitory activities

Contact Info

Product

Resources

About