Biosynthesis of Gold Nanoparticles from &lt;i&gt;Nauclea latifolia&lt;/i&gt; Leaves

Dozie-Nwachukwu, S.; Etuk-Udo, G.; Obayemi, John D.; Anuku, N.; Odusanya, Olushola S.; Malatesta, Karen; Chi, Chongwei; Soboyejo, Winston O.

doi:10.4028/www.scientific.net/amr.1132.36

Cited by 5 publications

(3 citation statements)

References 65 publications

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“…A general trend was found of which the SPR peak shifted towards the higher wavelength region and became narrower as the concentration increased. This shift in wavelength was accompanied by a decrease in the nanoparticle diameter, however, this contradicts other studies that have stated a red shift denotes an increase in particle size or agglomeration [139,147,148]. In contrast, the broadening of the absorption band indicates the existence of a larger size range within the solution.…”

Section: Concentrationcontrasting

confidence: 85%

“…On the other hand, numerous studies experienced different shapes, including triangular, pentagonal and hexagonal structures [ 136 , 137 , 138 ]. Furthermore, the clustering and polydispersity of particles were the main obstacles faced by researchers during the biosynthesis of gold nanocrystals [ 139 , 140 ].…”

Section: Green Synthesis Of Transitional Metals and Their Oxidesmentioning

confidence: 99%

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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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Section: Concentrationcontrasting

confidence: 85%

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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“…Barminas et al (2014) also described an environmentally friendly approach for synthesis of 2-100 nm sized AgNPs by employing extract of Ageratum conyzoides. Dozie-Nwachukwu et al (2016a) described the phytosynthesis of AuNPs from Nauclea latifolia leaf extract and the implications for detection and treatment of cancer were elaborated. Dozie-Nwachukwu et al (2016b) also showed that both whole-cell and cellfree extract of Serratia marcescens produced AuNPs via green synthesis.…”

Section: Survey Of Research Activities Atmentioning

confidence: 99%

Green Nanotechnology in Nigeria: The Research Landscape, Challenges and Prospects

Elegbede¹,

Lateef

2019

Annals of Science and Technology

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In this treatise, we examined the activities of researchers of Nigeria descent in the frontier areas of nanoscience and nanotechnology, with a focus on green nanotechnology. The exploration of literature published by scholars were reviewed and compartmentalized on the basis of applications of the nanomaterials. It can be concluded that the level of activities in this area is expanding owing to the emergence of more published works since the beginning of 2010. However, in comparison with research outputs from other developing African countries such as South Africa and Egypt, activities in green nanotechnology are still at low ebb in Nigeria. Issues that are contributory to the slow pace were identified and appropriate solutions in terms of improved funding of education, enactment of national policy on nanotechnology, curriculum development, international cooperation as well as human resource development among others were discussed.

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Nauclea latifolia (Karmadoda): Distribution, Composition and Utilization

Abdel-Rahman

2019

Wild Fruits: Composition, Nutritional Value and Products

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Biosynthesis of Gold Nanoparticles from <i>Nauclea latifolia</i> Leaves

Cited by 5 publications

References 65 publications

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

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

Green Nanotechnology in Nigeria: The Research Landscape, Challenges and Prospects

Nauclea latifolia (Karmadoda): Distribution, Composition and Utilization

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