Green Synthesis of Metal, Metal Oxide Nanoparticles, and Their Various Applications

Annu, .; Ali, Akbar; Ahmed, Shakeel

doi:10.1007/978-3-319-48281-1_115-1

Cited by 38 publications

(17 citation statements)

References 184 publications

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“…In agriculture, structural engineering, electronics, and medicine make extensive use of metal NPs, which can be widely found in a range of other sectors of science and technology. Most metal NPs are manufactured using chemical as well as physical procedures, including reduction with hydrothermal pyrolysis, and stabilization with numerous chemical compounds that, subsequently, are responsible for a wide range of biohazards as well as environmental problems due to the toxicity of the substances involved [1]. Many types of malignancies have consistently increased ROS-sensitive signaling pathways, which are involved in cell growth/proliferation, differentiation, protein synthesis, glucose metabolism, cell survival, and inflammation.…”

Section: Introductionmentioning

confidence: 99%

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

et al. 2022

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The use of F. religiosa might be beneficial in inflammatory illnesses and can be used for a variety of health conditions. In this article, we studied the identification of antioxidants using (DPPH) 2, 2-Diphenyl-1-picrylhydrazylradical scavenging activity in Ficus religiosa, as F. religiosa is an important herbal plant, and every part of it has various medicinal properties such as antibacterial properties that can be used by the researchers in the development and design of various new drugs. The 2, 2-Diphenyl-1- picrylhydrazyl (DPPH) is a popular, quick, easy, and affordable approach for the measurement of antioxidant properties that includes the use of the free radicals used for assessing the potential of substances to serve as hydrogen providers or free-radical scavengers (FRS). The technique of DPPH testing is associated with the elimination of DPPH, which would be a stabilized free radical. The free-radical DPPH interacts with an odd electron to yield a strong absorbance at 517 nm, i.e., a purple hue. An FRS antioxidant, for example, reacts to DPPH to form DPPHH, which has a lower absorbance than DPPH because of the lower amount of hydrogen. It is radical in comparison to the DPPH-H form, because it causes decolorization, or a yellow hue, as the number of electrons absorbed increases. Decolorization affects the lowering capacity significantly. As soon as the DPPH solutions are combined with the hydrogen atom source, the lower state of diphenylpicrylhydrazine is formed, shedding its violet color. To explain the processes behind the DPPH tests, as well as their applicability to Ficus religiosa (F. religiosa) in the manufacture of metal oxide nanoparticles, in particular MgO, and their influence on antioxidants, a specimen from the test was chosen for further study. According to our findings, F. religiosa has antioxidant qualities and may be useful in the treatment of disorders caused by free radicals.

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Section: Introductionmentioning

confidence: 99%

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

et al. 2022

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“…In addition, due to its conducting nature, its electrochemical properties are worthy to investigate. Silver is also used in wound dressings, topical creams, antiseptic sprays and fabrics [2].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical properties of biogenic silver nanoparticles synthesized using Hagenia abyssinica (Brace) JF. Gmel. medicinal plant leaf extract

Murthy¹,

Desalegn²,

Ravikumar³

et al. 2020

Mater. Res. Express

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The biogenic/green silver nanoparticles (g-Ag NPs) were synthesised by using the extract of indigenous medicinal plant of Ethiopia, Hagenia abyssinica (Brace) JF. Gmel. leaf extract for the first time, to investigate the synergistic effect of biomolecules towards the enhancement of electrochemical properties of NPs. The synthesized g-Ag NPs were characterized by UV-visible, UV-DRS, FT-IR, XRD, SEM, EDXA, TEM, HRTEM and SAED techniques. The maximum absorbance, λ max was found to be 461 nm for g-Ag NPs due to surface plasmon resonance. The energy gap, E g of NPs, was found to be 2.31 eV. FTIR spectrum confirmed the presence of bioactive compounds responsible for possible capping and stabilisation of g-Ag NPs. The XRD analysis revealed that the g-Ag NPs are highly crystalline exhibiting sharp peaks for (111), (200), (220) and (311) planes in the diffraction pattern. SEM and TEM micrographs showed differently shaped Ag particles in addition to spherical shape. The average particle size of NPs was found to be 24.08 nm using imageJ analysis. EDX analysis confirmed the presence of Ag in the g-Ag NPs. In addition, the SAED pattern of g-Ag NPs presented concentric patterns for 4 major planes of crystalline silver. The d-spacing values of 0.2428 nm, 0.2126 nm, 0.1483 nm and 0.1263 nm corresponds to d 111 Ag, d 200 Ag, d 220 Ag and d 311 Ag lattice fringes respectively. The cyclic voltammetry (CV) results suggest that g-Ag NPs possess better electrochemical properties due to its lower charge transfer resistance value of 17 Ω. EIS studies too revealed better stability of g-Ag NPs as electrode materials.

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“…Separate to this, for settling and reducing agent Woźniak-Budych et al [31,32] utilized peppermint extract lessening copper particles to get Cu NPs and affirmed by a change in color from green to orange. The round shape and normal size from the studies as seen by SEM as portrayed in Figure 6(a) [33]. From the XRD examination appeared in Figure 6…”

Section: Characterization Of M/mo-nps By Plant Extracts 231 Sem and mentioning

confidence: 90%

Bioengineered metal and metal oxide nanoparticles for photocatalytic and biological applications: A review

Palani

Kannan

Radhika

et al. 2020

Phys. Chem. Solid St.

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In this modern era, (M/MO-NPs) Metal/metal oxide nanoparticles are utilized in various areas. The growth of nanoparticles is tremendous in our daily activities like beauty products, doses, delivery of drugs, and outfit. They can be set up by numerous strategies, for example, green amalgamation and the ordinary compound blend techniques. Green synthesis incorporates endless increase to deliver M/MO-NPs with requesting properties. In Bioengineering, the "green" combination has increased massive consideration as a trustworthy, dependable, and natural benevolent convention for orchestrating a wide scope of Nanomaterials including M/MO-NPs and bio propelled materials. Be that as it may, the utilization of plant extracts for this intention is profitable over organisms because of usability and less biohazard. Union of metal and MO-NPs by using the extract of plant fluid arrangement have increased consideration toward the green methodology and with no antagonistic impact on nature. The current article intends to survey the advancement made lately on nanoparticle biosynthesis by organisms. These microbial assets incorporate microorganisms, organisms, yeast, green growth, and viruses. This study predominantly centers on the biosynthesis of the most usually examined M/MO-NPs, for example, copper, cadmium, noble metals, platinum, titanium oxide, palladium, zinc oxide, and cadmium sulfide.

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Green Synthesis of Metal, Metal Oxide Nanoparticles, and Their Various Applications

Cited by 38 publications

References 184 publications

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

Electrochemical properties of biogenic silver nanoparticles synthesized using Hagenia abyssinica (Brace) JF. Gmel. medicinal plant leaf extract

Bioengineered metal and metal oxide nanoparticles for photocatalytic and biological applications: A review

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