Sound methods for the synthesis of nanoparticles from biological molecules

Bhangu, Sukhvir Kaur; Baral, Anshul; Zhu, Haiyan; Ashokkumar, Muthupandian; Cavalieri, Francesca

doi:10.1039/d1na00496d

Cited by 8 publications

(4 citation statements)

References 66 publications

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“…Herein, we studied the growth mechanism of gold nanostructures with distinct morphologies using tryptophan and ultrasound. Tryptophan was chosen for our experiment due to its reported sono-responsive nature. − Subsequently, it was observed that tryptophan itself can reduce gold ions most likely via the oxidation of tryptophan, and the in situ-oxidized tryptophan promoted the anisotropic growth of primary Au nuclei to produce 2-D gold sheets. The gold nanostructures are produced by simply incubating the gold precursor with pristine tryptophan for 72 h, comprised mostly of AuNPs and a few 2-D gold nanosheets (AuNSs) with triangular and hexagonal morphologies.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Gold Nanosheets with Controlled Morphology by Combining a Natural Amino Acid with High-Frequency Ultrasound

Baral

Cavalieri

Chattopadhyay

et al. 2021

ACS Sustainable Chem. Eng.

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In this study, we report on the formation of gold nanosheets with different morphologies using a naturally occurring amino acid, viz, tryptophan, as a reducing and capping agent at ambient conditions. The importance of in situ-oxidized tryptophan for promoting anisotropic growth of gold (Au) nuclei to form two-dimensional gold nanosheets is demonstrated. Furthermore, we investigated the effect of high frequency ultrasound (490 kHz) and tryptophan to fabricate ultrathin gold nanosheets with controlled morphologies (triangular and polygonal shapes), without using any other reagents/stabilizers. The size of gold sheets (200 nm to micrometer range) can be controlled by tuning the experimental conditions. A possible mechanism for the formation of well-defined gold nanostructures with different morphologies is provided. High frequency sonication leads to the simultaneous dimerization of tryptophan and Au reduction, and we show that the interaction of tryptophan dimers with Au nuclei plays an important role in the formation of gold sheets. The sonochemically synthesized AuNSs displayed superior catalytic activity in the reduction of 4-nitrophenol to 4-aminophenol with a specific rate constant of 1.96 × 103 s–1 per unit gram of active catalyst and with excellent recyclability.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Gold Nanosheets with Controlled Morphology by Combining a Natural Amino Acid with High-Frequency Ultrasound

Baral

Cavalieri

Chattopadhyay

et al. 2021

ACS Sustainable Chem. Eng.

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“…Ultrasonication is a technique used to decrease size and increase dispersibility in the extract. This can be occurred as ultrasonic waves produce bubbles and cavities between particles in solutions breaking the weak van der Waals and other attraction forces that cause intra-molecules cleavage and thus, reducing the particles' size that will enhance the absorption of UEERO inside the oocysts [73]. Consequently, the present study revealed that UEERO had an inhibitory anticoccidial effect on sporulation (%) of E. tenella oocysts in a dose dependent manner as compared to control group.…”

Section: Discussionmentioning

confidence: 50%

In Vitro Study to Evaluate the Efficacy of Ultrasonicated Ethanolic Extract of Rosmarinus officinalis and its Chitosan-Based Nanoparticles Against Eimeria tenella Oocysts of Chickens

et al. 2022

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In this study, chitosan nanoparticles (CsNPs) were used as nanocarrier for ultrasonicated ethanolic extract of Rosmarinus officinalis (UEERO) as a new nanoformulation against Eimeria tenella. Herein, CsNPs have been synthesized by ionic gelation method at pH 3 (CsNPs3) and pH 5 (CsNPs5), followed by characterization of morphology, size, polydispersity index (PDI), surface charge, and loading efficiency of UEERO. An in vitro sporulation inhibition assay (10, 5, 2.5, 1.25, 0.62, 0.31, 0.15, 0.07, 0.04, 0.02, and 0.01 mg/ml normal saline solution) against E. tenella was conducted. Results showed that free CsNPs and UEERO-CsNPs3/5 were cubic- and spherical-shaped with positive charge and average size of ~ 150.8 nm (314.4 nm) and 151.7 nm (321.1 nm), respectively. The total loading efficiency using UV–vis spectrophotometer, was 80.05 at pH 5 and 64.39% at pH 3. The in vitro sporulation inhibition assay revealed that UEERO, CsNPs3/5, and UEERO-CsNPs3/5 showed a potential inhibitory effect on sporulation (%), distortion in wall (%), and sporocyst abnormality (%) in a dose-dependent manner. Accordingly, the concentration (10 mg/ml) showed the best efficacy after 24 h in UEERO, free CsNPs, and UEERO-CsNPs. Moreover, UEERO-CsNPs3 and UEERO-CsNPs5 had stopped the sporulation (%) after 72 h. Taken all together, UEERO-CsNPs3 and UEERO-CsNPs5 are best effective against E. tenella in a dose-dependent manner in terms of sporulation (%), distortion in wall (%), and sporocysts abnormality. Graphical abstract

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“…Ultrasonic emulsification is a simple, fast, versatile, and green pathway for preparing PSNE [5] . In previous studies Zhou et al have shown that the active cavitation zone in the flow through horn is limited to the hole region [6] .…”

Section: Introductionmentioning

confidence: 99%

Chemoenzymatic surface decoration of Nisin-shelled nanoemulsions: Novel targeted drug-nanocarriers for cancer applications

Hashad

Singla

Bhangu

et al. 2022

Ultrasonics Sonochemistry

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Sound methods for the synthesis of nanoparticles from biological molecules

Abstract: The development of simple, green, reproducible, and scalable approaches for synthesizing nanoparticles from biomolecules is important to advance nanomaterials towards therapeutic applications. Microreactors generated by high frequency ultrasound provide a...

Cited by 8 publications

References 66 publications

Synthesis of Gold Nanosheets with Controlled Morphology by Combining a Natural Amino Acid with High-Frequency Ultrasound

Synthesis of Gold Nanosheets with Controlled Morphology by Combining a Natural Amino Acid with High-Frequency Ultrasound

In Vitro Study to Evaluate the Efficacy of Ultrasonicated Ethanolic Extract of Rosmarinus officinalis and its Chitosan-Based Nanoparticles Against Eimeria tenella Oocysts of Chickens

Chemoenzymatic surface decoration of Nisin-shelled nanoemulsions: Novel targeted drug-nanocarriers for cancer applications

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