Synthesis of The gold Nanoparticles with Novel Shape via Chemical Process and Evaluating The structural, Morphological and Optical Properties

Jameel, Zainab N.

doi:10.1016/j.egypro.2017.07.075

Cited by 11 publications

(3 citation statements)

References 17 publications

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“…Similar results were reported by Ankanna et al synthesizing AgNPs with dispersed spherical shapes from the aqueous extract of Boswellia Ovaliafoliolata (31). Many other studies have reported a variety of plants that have been used for the synthesis of nanoparticles with spherical shapes that exhibit various bioactivities (32,33).…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Khan

Nadhman

et al. 2020

Green Chemistry Letters and Reviews

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The current study aims to assess the aqueous extract of Pinus wallichiana stem for the synthesis of small spherical-shaped (10-30 nm) silver nanoparticles (AgNPs) and their in-vitro and in-vivo biomedical applications. The biosynthesized AgNPs were nonmutagenic and safe at all test doses as per Ames and acute toxicity assay (20, 40, 60, and 80 mg/kg). The percent writhing inhibitory effect generated by AgNPs was 42.51, 50.84, and 59.06 at test doses of 10, 20, and 30 mg/kg, respectively. The percent decreased in gastrointestinal tract motility observed was 41.34%, 32.69%, and 28.48% at 10, 20, and 30 mg/kg, respectively. They also showed a significant antipyretic effect after 1, 2, and 3 h in comparison to normal saline. The AgNPs of P. wallichiana showed good antibacterial activity against Acinetobacter baumannii (60% with MIC 50 = 2.36 mg/ ml and MBC = 5.0 mg/ml). These nanoparticles also possessed good antioxidant activity of 61.77 ± 0.828% and 70.25 ± 0.56% at 400 and 500 µg/ml, respectively and lack phytoagglutinin potential. Because of their high potency as biomedical agents, these nanoparticles can be a good alternative to the currently available drugs and approaches.

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Section: Scanning Electron Microscopymentioning

confidence: 99%

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Khan

Nadhman

et al. 2020

Green Chemistry Letters and Reviews

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“…The TEM results displayed spherical, hexagonal, and triangular particle shapes with sizes ranging from 15 to 25 nm. Through the reduction in gold tetrachloride (HAuCl 4 H 2 O), the chemical synthesis of gold nanoparticles was confirmed by the UV-vis spectra with a strong band at 537.2 nm [ 132 ]. Interestingly, the study obtained leaf-like morphologies with similar particle diameters to that of the plant-mediated Au-NPs, ranging from 20 to 40 nm.…”

Section: Green Synthesis Of Transitional Metals and Their Oxidesmentioning

confidence: 99%

Green Synthesis of Transition-Metal Nanoparticles and Their Oxides: A Review

2021

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In recent years, many researchers have begun to shift their focus onto the synthesis of nanomaterials as this field possesses immense potential that may provide incredible technological advances in the near future. The downside of conventional synthesis techniques, such as co-precipitation, sol-gel and hydrothermal methods, is that they necessitate the use of toxic chemicals, produce harmful by-products and require a considerable amount of energy; therefore, more sustainable fabrication routes are sought-after. Biological molecules have been previously utilized as precursors for nanoparticle synthesis, thus eliminating the negative factors involved in traditional methods. In addition, transition-metal nanoparticles possess a wide scope of applications due to their multiple oxidation states and large surface areas, thereby allowing for a higher reactivity when compared to their bulk counterpart and rendering them an interesting research topic. However, this field is still relatively unknown and unpredictable as the biosynthesis of these nanostructures from fungi, bacteria and plants yield undesired diameters and morphologies, rendering them as redundant when compared to their chemically synthesized counterparts. Therefore, this review aims to obtain a better understanding on the plant-mediated synthesis process of the major transition-metal and transition-metal oxide nanoparticles, and how process parameters—concentration, temperature, contact time, pH level, and calcination temperature affect their unique properties such as particle size, morphologies, and crystallinity.

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“…Various methods such as green synthesis oxidation [2,9,19,27,43], chemical reduction [17,23,50], bacterial synthesis [4,7,35], fungal synthesis [42], laser ablation [8,16,48], CVD method [25,31,40,41,46], solvothermal [6,14], halogen-free synthesis [22,44] and seed-mediated synthesis [26,36] have been used for the synthesis of gold nanoparticles with different size, shapes and properties depending on the synthesis method and experimental conditions, as shown in the Table 1.…”

Section: Introductionmentioning

confidence: 99%

Fusiform gold nanoparticles by pulsed plasma in liquid method

2019

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We have synthesized fusiform gold nanoparticles by recovering gold from a solution of gold nanoparticles obtained by dispersing of gold electrodes in hexane by pulsed plasm in liquid method. Formation of fusiform gold nanoparticles with length from 50 to 150 nm, and diameter of 5-15 nm was achieved by pulsed plasma in liquid method. Fusiform gold nanoparticles obtained by our method are different from the spindle-shaped gold nanoparticles which were synthesized from the growth solution, due to their loose structure, while spindle-shaped gold nanoparticles are dense and much larger in size (length 300-400 nm, diameter ~ 100-150 nm). In addition to this work, dumbbell-shaped magnetite/gold (Fe 3 O 4 / Au) nanoparticles were synthesized by using magnetite nanoparticles obtained in a cetylpyridinium bromide (CpyBr) solution with concentration of 0.1% and a gold nanosolution, where 0.1% sodium citrate solution was applied as a reducing agent. Our proposed method is characterized by the forming of discharge localization during the electrodes erosion process, simpler and does not require use of nuclei in the form of spherical gold nanoparticles and presence of growth solution. Fusiform gold nanoparticles were formed by simple reduction with sodium citrate from gold nano-solution.

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Synthesis of The gold Nanoparticles with Novel Shape via Chemical Process and Evaluating The structural, Morphological and Optical Properties

Cited by 11 publications

References 17 publications

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Green Synthesis of Transition-Metal Nanoparticles and Their Oxides: A Review

Fusiform gold nanoparticles by pulsed plasma in liquid method

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