scholarly journals Single-Step Preparation of Silver-Doped Magnetic Hybrid Nanoparticles for the Catalytic Reduction of Nitroarenes

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 3340-3347 ◽  
Author(s):  
Hui-Fen Chen ◽  
Mei-Jou Hung ◽  
Tzu-Hsin Hung ◽  
Ya-Wen Tsai ◽  
Chun-Wei Su ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Single Step ◽  
Hybrid Nanoparticles

scholarly journals Hybrid Biopolymer and Lipid Nanoparticles with Improved Transfection Efficacy for mRNA

Cells ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 2034 ◽  
Author(s):  
Christian D. Siewert ◽  
Heinrich Haas ◽  
Vera Cornet ◽  
Sara S. Nogueira ◽  
Thomas Nawroth ◽  
...  
Keyword(s):  
Small Angle ◽  
Messenger Rna ◽  
Physicochemical Characterization ◽  
Single Step ◽  
Model Systems ◽  
Molecular Organization ◽  
Hybrid Nanoparticles ◽  
Polymer Mixture ◽  
Internal Organization ◽  
Transfection Efficacy

Hybrid nanoparticles from lipidic and polymeric components were assembled to serve as vehicles for the transfection of messenger RNA (mRNA) using different portions of the cationic lipid DOTAP (1,2-Dioleoyl-3-trimethylammonium-propane) and the cationic biopolymer protamine as model systems. Two different sequential assembly approaches in comparison with a direct single-step protocol were applied, and molecular organization in correlation with biological activity of the resulting nanoparticle systems was investigated. Differences in the structure of the nanoparticles were revealed by thorough physicochemical characterization including small angle neutron scattering (SANS), small angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryo-TEM). All hybrid systems, combining lipid and polymer, displayed significantly increased transfection in comparison to lipid/mRNA and polymer/mRNA particles alone. For the hybrid nanoparticles, characteristic differences regarding the internal organization, release characteristics, and activity were determined depending on the assembly route. The systems with the highest transfection efficacy were characterized by a heterogenous internal organization, accompanied by facilitated release. Such a system could be best obtained by the single step protocol, starting with a lipid and polymer mixture for nanoparticle formation.

Single-step preparation of recyclable silver nanoparticle immobilized porous glass filters for the catalytic reduction of nitroarenes

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19248-19254 ◽  
Author(s):  
Hong-Ling Lin ◽  
Nga-Lai Sou ◽  
Genin Gary Huang
Keyword(s):  
Silver Nanoparticle ◽  
Porous Glass ◽  
High Efficiency ◽  
Catalytic Reduction ◽  
Single Step

A single step preparation of recyclable silver nanocatalysts for catalytic reduction of nitroarenes with high efficiency.

A facile single-step synthesis of ternary multicore magneto-plasmonic nanoparticles

Nanoscale ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 3532-3535 ◽  
Author(s):  
Maria Benelmekki ◽  
Murtaza Bohra ◽  
Jeong-Hwan Kim ◽  
Rosa E. Diaz ◽  
Jerome Vernieres ◽  
...  
Keyword(s):  
Single Step ◽  
Plasmonic Nanoparticles ◽  
Hybrid Nanoparticles ◽  
Gas Condensation

Ternary hybrid nanoparticles composed of multiple dumbbell-like magneto-plasmonic FeAg cores encapsulated by a Si shell have been fabricated using a single-step co-sputter gas-condensation technique.

Single-Step Assembly of Cationic Lipid–Polymer Hybrid Nanoparticles for Systemic Delivery of siRNA

ACS Nano ◽  
2012 ◽  
Vol 6 (6) ◽  
pp. 4955-4965 ◽  
Author(s):  
Xian-Zhu Yang ◽  
Shuang Dou ◽  
Yu-Cai Wang ◽  
Hong-Yan Long ◽  
Meng-Hua Xiong ◽  
...  
Keyword(s):  
Cationic Lipid ◽  
Single Step ◽  
Hybrid Nanoparticles ◽  
Systemic Delivery ◽  
Polymer Hybrid

scholarly journals MnOx-CeOx Nanoparticles Supported on Graphene Aerogel for Selective Catalytic Reduction of Nitric Oxides

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Zhuo Yao ◽  
Yuxiang Guo ◽  
Yujing Yang ◽  
Hong Huang ◽  
Dianli Qu
Keyword(s):  
Electron Microscopy ◽  
Selective Catalytic Reduction ◽  
Conversion Rate ◽  
High Efficiency ◽  
Catalytic Reduction ◽  
Hybrid Nanoparticles ◽  
Nitric Oxides ◽  
Graphene Aerogel ◽  
Catalytic Activities ◽  
Hierarchical Porous

Removal of nitric oxides (NOx) from stationary and transportation sources has been desired for environmental benefits. Selective catalytic reduction (SCR) of NOx by NH3 is attractive for its cost effectiveness and high efficiency but still technically challenging in consideration of operable temperatures. In this research, MnOx-CeOx hybrid nanoparticles supported on graphene aerogel (MnOx-CeOx/GA) are fabricated as the monolithic catalysts for potential applications to low-temperature SCR. The impacts of the particle size along with the amount and valency of catalytic elements in the nanocomposite on the catalytic activities are studied with the help of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The catalyst crystallites are a few tens of nanometers and uniformly disperse on the surface of three-dimensional (3D) directionally aligned hierarchical porous graphene aerogel (GA) networks. The novel nanocomposite catalysts exhibit over 90% NOx conversion rate in a broad temperature range (200–300°C). Addition of CeOx into the MnOx-GA catalysts significantly reduces the operational temperature at the same conversion rate. In addition to Mn4+ ions in the catalysts, the adsorbed oxygen species which can be increased by the presence of low-valence cerium contribute to high catalytic activities in the MnOx-CeOx/GA catalysts.

scholarly journals Green Synthesis of Silver Nanoparticles Using Diospyros malabarica Fruit Extract and Assessments of Their Antimicrobial, Anticancer and Catalytic Reduction of 4-Nitrophenol (4-NP)

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1999
Author(s):  
Kaushik Kumar Bharadwaj ◽  
Bijuli Rabha ◽  
Siddhartha Pati ◽  
Bhabesh Kumar Choudhury ◽  
Tanmay Sarkar ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Environmental Protection Agency ◽  
Catalytic Reduction ◽  
The United States ◽  
Single Step ◽  
Diffusion Method ◽  
Fruit Extract ◽  
Primary Glioblastoma ◽  
Pharmaceutical Industries

The green synthesis of silver nanoparticles (AgNPs) has currently been gaining wide applications in the medical field of nanomedicine. Green synthesis is one of the most effective procedures for the production of AgNPs. The Diospyros malabarica tree grown throughout India has been reported to have antioxidant and various therapeutic applications. In the context of this, we have investigated the fruit of Diospyros malabarica for the potential of forming AgNPs and analyzed its antibacterial and anticancer activity. We have developed a rapid, single-step, cost-effective and eco-friendly method for the synthesis of AgNPs using Diospyros malabarica aqueous fruit extract at room temperature. The AgNPs began to form just after the reaction was initiated. The formation and characterization of AgNPs were confirmed by UV-Vis spectrophotometry, XRD, FTIR, DLS, Zeta potential, FESEM, EDX, TEM and photoluminescence (PL) methods. The average size of AgNPs, in accordance with TEM results, was found to be 17.4 nm. The antibacterial activity of the silver nanoparticles against pathogenic microorganism strains of Staphylococcus aureus and Escherichia coli was confirmed by the well diffusion method and was found to inhibit the growth of the bacteria with an average zone of inhibition size of (8.4 ± 0.3 mm and 12.1 ± 0.5 mm) and (6.1 ± 0.7 mm and 13.1 ± 0.5 mm) at 500 and 1000 µg/mL concentrations of AgNPs, respectively. The anticancer effect of the AgNPs was confirmed by MTT assay using the U87-MG (human primary glioblastoma) cell line. The IC50 value was found to be 58.63 ± 5.74 μg/mL. The results showed that green synthesized AgNPs exhibited significant antimicrobial and anticancer potency. In addition, nitrophenols, which are regarded as priority pollutants by the United States Environmental Protection Agency (USEPA), can also be catalytically reduced to less toxic aminophenols by utilizing synthesized AgNPs. As a model reaction, AgNPs are employed as a catalyst in the reduction of 4-nitrophenol to 4-aminophenol, which is an intermediate for numerous analgesics and antipyretic drugs. Thus, the study is expected to help immensely in the pharmaceutical industries in developing antimicrobial drugs and/or as an anticancer drug, as well as in the cosmetic and food industries.

Development and characterization of single step self-assembled lipid polymer hybrid nanoparticles for effective delivery of methotrexate

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62989-62999 ◽  
Author(s):  
Neeraj K. Garg ◽  
Bhupinder Singh ◽  
Gajanand Sharma ◽  
Varun Kushwah ◽  
Rajeev K. Tyagi ◽  
...  
Keyword(s):  
Single Step ◽  
Controlled Delivery ◽  
Hybrid Nanoparticles ◽  
Polymer Hybrid ◽  
Effective Delivery ◽  
Self Assembled

The present study was designed to develop methotrexate (MTX) loaded lipid polymer hybrid nanoparticles (LPHNPs) for spatial and controlled delivery of this drug.

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