Green Nanomaterials for Clean Environment

Chokkareddy, Rajasekhar; Kanchi, Suvardhan

doi:10.1007/978-3-319-48281-1_73-1

Cited by 12 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In discharges, under similar conditions, three major families of nanostructures were identified: unordered micrometric agglomerates (UMAs), nanoflakes, and dendrites (for more details, see [22]). The UMAs consist of Cu and Cu 2 O nanoparticles and are detected at all investigated conductivity conditions (2,4,8,16,32, and 64 µS/cm). The increase of σ 0 was accompanied by a rise in Cu 2 O content.…”

Section: Discussionmentioning

confidence: 93%

See 1 more Smart Citation

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

2020

View full text Add to dashboard Cite

Nanomaterial synthesis is a hot research subject that has been extensively studied in the last two decades. Recently, plasmas in liquid systems have been proposed as an efficient means of synthesizing various types of nanomaterials. The formation processes implicate many physical and chemical phenomena that take place at the electrode surface, as well as in the plasma volume, which renders it difficult to fully understand the underlying mechanisms. In this study, we assess the effect of electric field on nanomaterial synthesis in a system composed of two copper electrodes immersed in water, in the absence of an electrical discharge. The obtained results indicate that various nanostructures, including copper nanoparticles, copper oxide nanowires, and/or hollow nanoparticles, may be produced, depending on the electrical conductivity of the solution (adjusted by adding highly diluted HCl to deionized water). The materials synthesized herein are collected and characterized, and a formation mechanism is proposed. Overall, our results provide insight into the physical and chemical phenomena underlying nanomaterial synthesis in plasmas in liquid.

show abstract

Section: Discussionmentioning

confidence: 93%

“…However, despite the advantages and wide applicability of nanomaterials, their synthesis routes are not been fully understood [ 3 ]. Currently, research efforts are focused on developing ecological means of nanomaterial synthesis that are cost effective, highly efficient, and require minimal use of chemicals [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

2020

View full text Add to dashboard Cite

show abstract

“…Mnayer et al [ 7 ] carried out a GC-MS analysis of the shallot essential oil (EO), and they reported that 42 compounds that signify more than 70.29% of the total EO were recognized. The major components were methyl propyl disulfide (3.26%), methyl 1-propenyl propyl disulfide (4.57%), propyl trisulfide (9.20%), dipropyl trisulfide (11.14%), and dipropyl disulfide (15.17%).…”

Section: Resultsmentioning

confidence: 99%

“…Thus, efforts are being made to develop sustainable, cost-effective, non-toxic, and productive synthesis routes for nanomaterials. The green methodology is a performance for the manageable manufacture of nanomaterials with a well-defined shape and size [ 7 ]. In recent studies, metal-based nanoparticles have been reported to offer promising potential in biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles Using Allium cepa var. Aggregatum Natural Extract: Antibacterial and Cytotoxic Properties

Shanker¹,

Dhayalan

Umar³

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

The chemical content of plant excerpts can be efficiently employed to reduce the metal ions to nanoparticles in the one-pot green production method. Here, green production of silver nanoparticles (AC-AgNPs) is performed by means of Allium cepa var. Aggregatum (shallot) extract as a stabilizer and reducer. The shape, size, and morphology of resultant AC-AgNPs are examined by optical spectroscopy analysis such as UV for nucleation and coalescence processes of the AC-AgNPs. Through FTIR functional group is determined and through DLS size is defined, it was confirmed that metallic AgNPs were successfully synthesized through the green synthesis route, and these results agreed well with the results obtained in the XRD pattern along with TEM spectroscopy, where the TEM images confirm the formation of sphere-like nanostructures along with SAED analysis. The chemical characterization is performed with XPS; the obtained molecular species in the materials are determined from the energy profile. Antioxidant activity of AC-AgNPs versus DPPH substrate is carried out. Antibacterial activity is well established against Gram-negative and Gram-positive organisms. Cell viability is accomplished, followed by an MTT assay, and a cytotoxicity assay of AC-AgNPs on MCF—7 cell lines is also carried out. Highlights: (1). This study highlights the eco-friendly synthesis of silver nanoparticles from Allium cepa var. Aggregatum Natural Extract. (2). The synthesized AC-AgNPs were characterized by UV-VIS, FT-IR, XRD, TEM, and XPS. (3). The synthesized nanoparticles were well dispersed in nature and the size range of 35 ± 8 nm. (4). The anti-candidal activity of biosynthesized silver nanoparticles was evaluated against the following Gram-Negative organisms: Escherichia coli (E. coli), and the following Gram-positive organisms: Staphylococcus aureus strains. The biosynthesized AC-AgNPs showed enhanced antiseptic features anti both Gram-positive and negative organisms. (5). Besides, the in vitro cytotoxic outcomes of AC-AgNPs were assessed versus MCF-7 cancerous cells, and the reduction in the feasibility of cancer cells was established via MTT assay, which suggests potential biomedical applications.

show abstract

“…In recent years, researchers are frequently looking at the use of natural ecological sources for producing nanomaterials for a variety of applications. 1 For example, natural bioresources have attracted significant attention for the preparation of electrode materials, conductive supports, and additives for electrodes, which are of high interest in the realm of electrochemical applications. 2 To be specific, the synthesis of metal nanoparticles with outstanding electrocatalytic properties is of prominent interest for the development of novel electrochemical sensors.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Detection of Dopamine and Riboflavine on a Screen-Printed Carbon Electrode Modified by AuNPs Derived fromRhanterium suaveolensPlant Extract

Chelly

Zribi

et al. 2021

ACS Omega

View full text Add to dashboard Cite

A AuNP-modified screen-printed carbon electrode (AuNP/SPCE) for monitoring important biomolecules, such as dopamine (DA) and riboflavin (RF), having a high potential for personalized medicine and for continuous monitoring of human health is here proposed. AuNPs were synthesized using the extract of Rhanterium suaveolens as a reducing medium and were characterized by UV–vis spectroscopy, dynamic light scattering (DLS), and scanning and transmission electron microscopy (SEM and TEM). The synthesized AuNPs appear spherical and present a bimodal size distribution with a maximum centered at around 30–50 nm. Cyclic voltammetry (CV) experiments demonstrated that the modified AuNP/SPCE sensor exhibits superior electrochemical performances to the bare SPCE. Low limits of detection (LODs) of 0.2 and 0.07 μM at S/N = 3 and sensitivities of 550.4  and 2399 μA mM–1 cm–2 were registered for DA and RF detection, respectively. Results demonstrate the promising electrochemical characteristics of the synthesized AuNPs and developed AuNP/SPCE electrochemical sensor for the determination of these important biomolecules.

show abstract

Green Nanomaterials for Clean Environment

Cited by 12 publications

References 34 publications

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

Green Synthesis of Silver Nanoparticles Using Allium cepa var. Aggregatum Natural Extract: Antibacterial and Cytotoxic Properties

Electrochemical Detection of Dopamine and Riboflavine on a Screen-Printed Carbon Electrode Modified by AuNPs Derived fromRhanterium suaveolensPlant Extract

Contact Info

Product

Resources

About