scholarly journals Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1558 ◽  
Author(s):  
Egor M. Kostyukhin ◽  
Vera D. Nissenbaum ◽  
Evgeny V. Abkhalimov ◽  
Alexander L. Kustov ◽  
Boris G. Ershov ◽  
...  
Keyword(s):  
Physical Properties ◽  
Magnetite Nanoparticles ◽  
Colloidal Stability ◽  
Inert Atmosphere ◽  
Point Of Zero Charge ◽  
Microwave Assisted Synthesis ◽  
Coating Agent ◽  
Water Dispersible ◽  
Microwave Assisted ◽  
Synthesis Protocol

Nowadays, there is a demand in the production of nontoxic multifunctional magnetic materials possessing both high colloidal stability in water solutions and high magnetization. In this work, a series of water-dispersible natural humate-polyanion coated superparamagnetic magnetite nanoparticles has been synthesized via microwave-assisted synthesis without the use of inert atmosphere. An impact of a biocompatible humate-anion as a coating agent on the structural and physical properties of nanoparticles has been established. The injection of humate-polyanion at various synthesis stages leads to differences in the physical properties of the obtained nanomaterials. Depending on the synthesis protocol, nanoparticles are characterized by improved monodispersity, smaller crystallite and grain size (up to 8.2 nm), a shift in the point of zero charge (6.4 pH), enhanced colloidal stability in model solutions, and enhanced magnetization (80 emu g−1).

Microwave-assisted synthesis of nitrogen doped carbon dots using prickly pear as the carbon source and its application as highly selective sensor for Cr(VI) and as patterning agent

2021 ◽  
Author(s):  
Shreya Bhatt ◽  
Gaurav Vyas ◽  
Parimal Paul
Keyword(s):  
Carbon Dots ◽  
Microwave Assisted Synthesis ◽  
Nitrogen Doped ◽  
Water Dispersible ◽  
Microwave Assisted ◽  
Bio Imaging ◽  
Natural Carbon ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Selective Sensor

Preparation of water dispersible carbon dots from inexpensive natural carbon precursors and its application for purposes such as sensing, bio-imaging, patterning agent etc. is showing growing interest in recent years....

Unique role of ionic liquid in microwave-assisted synthesis of monodisperse magnetite nanoparticles

2010 ◽  
Vol 46 (22) ◽  
pp. 3866 ◽  
Author(s):  
Hengyao Hu ◽  
Hao Yang ◽  
Peng Huang ◽  
Daxiang Cui ◽  
Yanqing Peng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Magnetite Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Unique Role ◽  
Microwave Assisted

scholarly journals A Microwave-Assisted Synthesis of Zinc Oxide Nanocrystals Finely Tuned for Biological Applications

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 212 ◽  
Author(s):  
Nadia Garino ◽  
Tania Limongi ◽  
Bianca Dumontel ◽  
Marta Canta ◽  
Luisa Racca ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Colloidal Stability ◽  
Cell Uptake ◽  
Biological Behavior ◽  
Microwave Assisted Synthesis ◽  
Biological Applications ◽  
Uniform Size ◽  
Chemical Surface ◽  
Microwave Assisted ◽  
Synthesis Procedure

Herein we report a novel, easy, fast and reliable microwave-assisted synthesis procedure for the preparation of colloidal zinc oxide nanocrystals (ZnO NCs) optimized for biological applications. ZnO NCs are also prepared by a conventional solvo-thermal approach and the properties of the two families of NCs are compared and discussed. All of the NCs are fully characterized in terms of morphological analysis, crystalline structure, chemical composition and optical properties, both as pristine nanomaterials or after amino-propyl group functionalization. Compared to the conventional approach, the novel microwave-derived ZnO NCs demonstrate outstanding colloidal stability in ethanol and water with long shelf-life. Furthermore, together with their more uniform size, shape and chemical surface properties, this long-term colloidal stability also contributes to the highly reproducible data in terms of biocompatibility. Actually, a significantly different biological behavior of the microwave-synthesized ZnO NCs is reported with respect to NCs prepared by the conventional synthesis procedure. In particular, consistent cytotoxicity and highly reproducible cell uptake toward KB cancer cells are measured with the use of microwave-synthesized ZnO NCs, in contrast to the non-reproducible and scattered data obtained with the conventionally-synthesized ones. Thus, we demonstrate how the synthetic route and, as a consequence, the control over all the nanomaterial properties are prominent points to be considered when dealing with the biological world for the achievement of reproducible and reliable results, and how the use of commercially-available and under-characterized nanomaterials should be discouraged in this view.

ChemInform Abstract: Microwave-Assisted Synthesis, Microstructure, and Physical Properties of Rare-Earth Chromites.

ChemInform ◽  
2013 ◽  
Vol 44 (12) ◽  
pp. no-no
Author(s):  
Jesus Prado-Gonjal ◽  
Rainer Schmidt ◽  
Juan-Jose Romero ◽  
David Avila ◽  
Ulises Amador ◽  
...  
Keyword(s):  
Rare Earth ◽  
Physical Properties ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Microwave-assisted synthesis of magnetite nanoparticles for MR blood pool contrast agents

2012 ◽  
Vol 324 (4) ◽  
pp. 488-494 ◽  
Author(s):  
Wangchuan Xiao ◽  
Hongchen Gu ◽  
Dan Li ◽  
Dandan Chen ◽  
Xiaoyong Deng ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Magnetite Nanoparticles ◽  
Blood Pool ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Blood Pool Contrast Agents

scholarly journals Anti-site disorder and physical properties in microwave synthesized RE2Ti2O7 (RE = Gd, Ho) pyrochlores

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85229-85241 ◽  
Author(s):  
Alejandro Gómez-Pérez ◽  
Jesús Prado-Gonjal ◽  
Daniel Muñoz-Gil ◽  
Adrián Andrada-Chacón ◽  
Javier Sánchez-Benítez ◽  
...  
Keyword(s):  
Rare Earth ◽  
Physical Properties ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Site Disorder

In this work we report on the microwave assisted synthesis of nano-sized Gd2Ti2O7 (GTO) and Ho2Ti2O7 (HTO) powders from the RE2Ti2O7 pyrochlore family (RE = rare earth) and their physical properties.

Microwave Assisted Synthesis of Magnetite Nanoparticles

2014 ◽  
Vol 14 (8) ◽  
pp. 5790-5797 ◽  
Author(s):  
S. S. Pati ◽  
S. Kalyani ◽  
V. Mahendran ◽  
John Philip
Keyword(s):  
Magnetite Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted
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