The Biosynthesis of Infrared-Emitting Quantum Dots in Allium Fistulosum

Green, Michael; Haigh, Sarah J.; Lewis, Edward A.; Sandiford, Lydia; Burkitt-Gray, Mary; Fleck, Roland A.; Vizcay‐Barrena, Gema; Jensen, Linda; Mirzai, H.; Curry, Richard J.; Dailey, Lea Ann

doi:10.1038/srep20480

Cited by 6 publications

(3 citation statements)

References 20 publications

(24 reference statements)

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“…Green et al . have developed a biogenic protocol for synthesis of HgTe QDs emitting infrared radiations using Allium fistulosum [174] . The method involved soaking of Allium fistulosum plant in an aqueous solution of 0.0894 % w/w 1 % naphthylaceitic acid and sodium salt (BabyBio roota) for an hour.…”

Section: Biogenesis Of Quantum Dotsmentioning

confidence: 99%

“…Green et al have developed a biogenic protocol for synthesis of HgTe QDs emitting infrared radiations using Allium fistulosum. [174] The method involved soaking of Allium fistulosum plant in an aqueous solution of 0.0894 % w/w 1 % naphthylaceitic acid and sodium salt (BabyBio roota) for an hour. Thereafter, the plant was embedded in perlite soil and plunged in deionized water under natural surrounding conditions with at least 2 inches of bulb enclosed by water for 4 weeks.…”

Section: Biogenesis Of Quantum Dots Using Allium Fistulosummentioning

confidence: 99%

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Biogenesis of Quantum Dots: An Update

et al. 2022

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Quantum dots (QDs) or nanocrystals are luminous semiconductors with dimension in the range from 2 to 20 nm. Owing to the unmatched electronic and optical properties, quantum dots notice applications in various domains such as optoelectronics, sensors, photodetection, transistors, LEDs (light-emitting devices), quantum computing, solar cells, catalysis, medicine, etc. to name a few. The unique quantum effects of nanocrystals can be attuned by modifying their sizes and morphology through various top-down and bottom-up strategies. Biosynthesis or biogenesis is one such newly developed approach for nanomaterial synthesis which relies on the principles of green chemistry and employs living organisms to develop quantum dots with amiable physicochemical properties, low cytotoxicity, and biocompatibility. Biogenic methods make use of biomole-cules and enzymatic processes to detoxify, mineralize and induce nucleation of metals and non-metals to fabricate quantum dots. This review covers recent progress in the biological synthesis of quantum dots have been highlighted. Diverse extracellular and intracellular biogenic methods based on different organisms including algae, bacteria, fungi, plants, protozoa, earthworms, and mammalian blood vessels have been discussed. Moreover, the probable mechanistic pathways of biosyntheses, scope, and applications of bioengineered quantum dots have also been elaborated. This review examines the recent advances made in the field of biogenic quantum dots and also analyzes the upcoming challenges and viewpoints in this promising area of study.

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Section: Biogenesis Of Quantum Dotsmentioning

confidence: 99%

Section: Biogenesis Of Quantum Dots Using Allium Fistulosummentioning

confidence: 99%

Biogenesis of Quantum Dots: An Update

et al. 2022

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“…[29][30][31][32][33][34][35][36][37]. Biosynthesis of gold nanoparticles is important due to needing lower energy, simple equipments, and lower costs [38][39][40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Bacterial Biosynthesis of Gold Nanoparticles Using Salmonella enterica subsp. enterica serovar Typhi Isolated from Blood and Stool Specimens of Patients

et al. 2017

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Salmonella is one of the most common causes of gastroenteritis. In this study, a PCR assay was developed for the rapid detection of microbial cultures of Salmonella enterica sub species of enterica serovar Typhi in samples of patients suspected typhoid. The assay was based on duplicate the STY4669-hypothetical protein gene. The gene primers were designed and blast. Then the bacteria strains were employed for the green synthesis of gold nanoparticles (AuNPs), and one of the strains represented ability to extracellular synthesis of gold nanoparticles. The nanoparticles were characterized using UV-visible spectrophotometer, X-ray powder diffraction, Transmission electron microscopy. The synthesized nanoparticles had a maximum absorption in UV-vis spectra at 556 nm, a crystalline structure, and an average size of 42 nm.

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Imaging the Hydrated Microbe-Metal Interface Using Nanoscale Spectrum Imaging

Lewis

Downie

Collins

et al. 2016

Part. Part. Syst. Charact.

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PdAu nanocrystals were synthesised by Geobacter sulfurreducens, a dissimilatory metalreducing bacterium, and the resulting bimetallic nanocrystal decorated microbes were imaged using a range of advanced electron microscopy techniques. Specifically we report the first example of elemental mapping of fully hydrated biological nanostructures using scanning transmission electron microscope (STEM) energy dispersive X-ray (EDX) spectrum imaging within an environmental liquid-cell. We combine these results with cryo-TEM and ex situ STEM imaging and EDX analysis with the aim of better understanding microbial synthesis of bimetallic nanoparticles. We demonstrate that although Au and Pd are colocalised across the cells, the population of nanoparticles produced is bimodal, containing ultra-small alloyed nanocrystals with diameters <3nm and significantly larger core-shell structures (> 200nm in diameter) which show higher Pd contents and exhibited a Pd enriched rich shell only a few nanometres thick. The application of high-resolution imaging techniques described here offers the potential to visualise the microbe-metal interface during the bioproduction of a range of functional materials by microbial "green" synthesis routes, and also key interfaces underpinning globally relevant environmental processes (e.g. metal cycling).

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The Biosynthesis of Infrared-Emitting Quantum Dots in Allium Fistulosum

Cited by 6 publications

References 20 publications

Biogenesis of Quantum Dots: An Update

Biogenesis of Quantum Dots: An Update

Bacterial Biosynthesis of Gold Nanoparticles Using Salmonella enterica subsp. enterica serovar Typhi Isolated from Blood and Stool Specimens of Patients

Imaging the Hydrated Microbe-Metal Interface Using Nanoscale Spectrum Imaging

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