A facile and fast synthetic approach to create selenium nanoparticles with diverse shapes and their antioxidation ability

A facile microwave-assisted method was developed to synthesize multi-morphology selenium nanoparticles with better antioxidation properties as their size decreased.

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Assessment of Antimicrobial Features of Selenium Nanoparticles (SeNPs) Using Cyclic Voltammetric Strategy

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2019.16627 ◽

2019 ◽

Vol 19 (11) ◽

pp. 7363-7368 ◽

Cited By ~ 3

Author(s):

Madiha Saeed ◽

M. Tayyab Ansari ◽

Imdad Kaleem ◽

Sadia Zafar Bajwa ◽

Asma Rehman ◽

...

Keyword(s):

Cyclic Voltammetry ◽

Biomedical Applications ◽

Selenium Nanoparticles ◽

Size Distributions ◽

Cyclic Voltammetric ◽

Microwave Assisted ◽

Straightforward Method ◽

Microwave Assisted Method ◽

Controllable Size ◽

Cyclic Voltammetry Data

The emerging biomedical applications of selenium nanoparticles (SeNPs) require facile and efficient strategy to assess its interactions with cell membrane. In this study, an efficient and reproducible microwave assisted method was used to synthesize SeNPs with controllable size distributions. The physical properties of the emergent structures, such as morphology, structure, and size were studied. The antimicrobial applications of SeNPs were assessed by electrochemical analyses that entailed the systematic acquisition of cyclic voltammetry data. Our results demonstrate a straightforward method to predict the integrity of bacterial cell membranes following the administration of SeNP treatments.

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New Insights into the Nature of the Band Gap of CuGeO3 Nanoparticles: Synthesis, Electronic Structure, and Optical and Photocatalytic Properties

10.26434/chemrxiv.8362409.v1 ◽

2019 ◽

Author(s):

Victor Y. Suzuki ◽

Luís Henrique Cardozo Amorin ◽

Natália H. de Paula ◽

Anderson R. Albuquerque ◽

Julio Ricardo Sambrano ◽

...

Keyword(s):

Electronic Structure ◽

Band Gap ◽

Material Design ◽

Photocatalytic Properties ◽

Critical Parameters ◽

Synthetic Approach ◽

Microwave Assisted ◽

Theoretical Approaches ◽

Nanoparticles Synthesis ◽

First Time

We report, for the first time, new insights into the nature of the band gap of <a>CuGeO3 </a>(CGO) nanocrystals synthesized from a microwave-assisted hydrothermal method in the presence of citrate. To the best of our knowledge, this synthetic approach has the shortest reaction time and it works at the lowest temperatures reported in the literature for the preparation of these materials. The influence of the surfactant on the structural, electronic, optical, and photocatalytic properties of CGO nanocrystals is discussed by a combination of experimental and theoretical approaches, and that results elucidates the nature of the band gap of synthetized CGO nanocrystals. We believe that this particular strategy is one of the most critical parameters for the development of innovative applications and that result could shed some light on the emerging material design with entirely new properties.

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Preparation and application of carbon and hollow TiO2 microspheres by microwave heating at a low temperature

e-Polymers ◽

10.1515/epoly-2021-0014 ◽

2021 ◽

Vol 21 (1) ◽

pp. 200-209

Author(s):

Caiyun Zhang ◽

Chunhong Li ◽

Bolin Ji ◽

Zhaohui Jiang

Keyword(s):

Low Temperature ◽

Microwave Heating ◽

Raw Material ◽

Carbon Microspheres ◽

Microwave Assisted ◽

The Core ◽

Good Crystallinity ◽

Carbon Core ◽

Microwave Assisted Method ◽

Uniform Particle Size

Abstract A fast, simple, and energy-saving microwave-assisted approach was successfully developed to prepare carbon microspheres. The carbon microspheres with a uniform particle size and good dispersity were prepared using glucose as the raw material and HCl as the dehydrating agent at low temperature (90°C) in an open system with the assistance of microwave heating. The carbon microspheres were characterized by elemental analysis, XRD, SEM, FTIR, TG, and Raman. The results showed that the carbon microspheres prepared under the condition of 18.5% (v/v) HCl and heating for 30 min by microwave had a narrow size distribution. The core–shell structure of the carbon core and TiO2 shell was prepared with (NH4)2TiF6, H3BO3 using the microwave-assisted method. The hollow TiO2 microspheres with good crystallinity and high photocatalytic properties were successfully prepared by sacrificing the carbon microspheres.

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