scholarly journals Comparative Toxicity of CuZn Nanoparticles with Different Physical and Chemical Characteristics

2019 ◽  
Vol 35 (3) ◽  
pp. 973-981
Author(s):  
Sergey Miroshnikov ◽  
Elena Sizova ◽  
Elena Yausheva ◽  
Michael Uimin ◽  
Alexander Konev ◽  
...  
Keyword(s):  
Phase Composition ◽  
Specific Surface ◽  
Gas Phase ◽  
Metallic Copper ◽  
Zinc Alloy ◽  
Controlled Synthesis ◽  
Alloy Nanoparticles ◽  
Phase Synthesis ◽  
Physical And Chemical ◽  
Test Cultures

In the experiment, the biological activity of copper and zinc alloy nanoparticles prepared by gas phase synthesis in an argon atmosphere was assessed. Nanoparticle preparations differed in phase composition and specific surface for CuZnNPs1 - 36 m2/g, CuZnNPs2 - 22 and CuZnNPs3 NP - 15 m2/g. As the test cultures, E.coli K12 TG1 pF1, E.coli K12 MG1655 katG::lux, E.coli MG1655 pRecA-lux, E.coli K12 MG1655 psoxS::lux were used. As the results showed, phase composition and specific surface area of nanoparticles were their toxicity factors. CuZnNPs3 is the most toxic among the studied samples, the percentage of zinc phase in it, in comparison with other tested powders, is the largest (52.3%), and the percentage of metallic copper is the smallest (7.9%). Within further works is to carry out controlled synthesis that will allow changing the toxicity of the nanoparticles under study by phase composition and specific surface.

scholarly journals Bimetallic Nanocrystals: Structure, Controllable Synthesis and Applications in Catalysis, Energy and Sensing

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1926
Author(s):  
Gaojie Li ◽  
Wenshuang Zhang ◽  
Na Luo ◽  
Zhenggang Xue ◽  
Qingmin Hu ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Chemical Properties ◽  
Research Progress ◽  
Synthesis Methods ◽  
Controlled Synthesis ◽  
Controllable Synthesis ◽  
Composition And Structure ◽  
Bimetallic Nanocrystals ◽  
Physical And Chemical ◽  
And Chemical Properties

In recent years, bimetallic nanocrystals have attracted great interest from many researchers. Bimetallic nanocrystals are expected to exhibit improved physical and chemical properties due to the synergistic effect between the two metals, not just a combination of two monometallic properties. More importantly, the properties of bimetallic nanocrystals are significantly affected by their morphology, structure, and atomic arrangement. Reasonable regulation of these parameters of nanocrystals can effectively control their properties and enhance their practicality in a given application. This review summarizes some recent research progress in the controlled synthesis of shape, composition and structure, as well as some important applications of bimetallic nanocrystals. We first give a brief introduction to the development of bimetals, followed by the architectural diversity of bimetallic nanocrystals. The most commonly used and typical synthesis methods are also summarized, and the possible morphologies under different conditions are also discussed. Finally, we discuss the composition-dependent and shape-dependent properties of bimetals in terms of highlighting applications such as catalysis, energy conversion, gas sensing and bio-detection applications.

ChemInform Abstract: Growth Mechanism of MoS2 Fullerene-Like Nanoparticles by Gas-Phase Synthesis.

ChemInform ◽  
2001 ◽  
Vol 32 (8) ◽  
pp. no-no
Author(s):  
A. Zak ◽  
Y. Feldman ◽  
V. Alperovich ◽  
R. Rosentsveig ◽  
R. Tenne
Keyword(s):  
Gas Phase ◽  
Growth Mechanism ◽  
Phase Synthesis ◽  
Gas Phase Synthesis

Substrate-Free Gas-Phase Synthesis of Graphene Sheets

Nano Letters ◽  
2008 ◽  
Vol 8 (7) ◽  
pp. 2012-2016 ◽  
Author(s):  
Albert Dato ◽  
Velimir Radmilovic ◽  
Zonghoon Lee ◽  
Jonathan Phillips ◽  
Michael Frenklach
Keyword(s):  
Gas Phase ◽  
Graphene Sheets ◽  
Phase Synthesis ◽  
Free Gas ◽  
Gas Phase Synthesis
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