Phytosynthesis of Au and Au/ZrO2 bi-phasic system nanoparticles with evaluation of their colloidal stability
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F19%3A10236600" target="_blank" >RIV/61989100:27640/19:10236600 - isvavai.cz</a>
Result on the web
<a href="https://www.ingentaconnect.com/content/asp/jnn/2019/00000019/00000005/art00046#trendmd-suggestions" target="_blank" >https://www.ingentaconnect.com/content/asp/jnn/2019/00000019/00000005/art00046#trendmd-suggestions</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1166/jnn.2019.15851" target="_blank" >10.1166/jnn.2019.15851</a>
Alternative languages
Result language
angličtina
Original language name
Phytosynthesis of Au and Au/ZrO2 bi-phasic system nanoparticles with evaluation of their colloidal stability
Original language description
Due to its easy availability, preparation, handling and non-toxic nature, Equisetum arvense horsetail extract was chosen as a reducing, stabilizing and functionalizing agent for Au and bi-phasic Au/ZrO2 nanoparticle phytosynthesis inorganic nanoparticle synthesis mediated by plant extract. We studied Au and bi-phasic Au/ZrO2 nanoparticles in colloids by various physical-chemical and analytical methods over 5 weeks. Dynamic Light Scattering (DLS) and Scanning Transmission Electron Microscopy (STEM) compared core and hydrodynamic diameters of nanoparticles. ζ-potential measurement indirectly determined nanoparticles stability in liquid medium. Ultraviolet-Visible Spectroscopy (UV-Vis) characterized basic absorbance maxima for both Au and the bi-phasic Au/ZrO2 system. Finally, total metal concentration was determined using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). ζ-potential measurements proved satisfactory stability of both Au (-13.4 to -17 mV) and Au/ZrO2 nanoparticles (-14.1 to -17.5 mV) over the experimental period. Scanning Transmission Electron Microscopy with Selected Area Diffraction (SAED) analysis confirmed nanoparticles crystalline nature, and we determined 24 nm and 40 nm core nanogold diameters in Au and Au/ZrO2 nanoparticle colloids. Dynamic light scattering analysis confirmed the dichotomy between particle sizes in liquid medium in the hundreds of nanometers measured, and long-term measurements confirmed reasonable colloid stability - a paramount parameter for potential nanoparticles applications; especially in heterogeneous catalysis.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of nanoscience and nanotechnology
ISSN
1533-4880
e-ISSN
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Volume of the periodical
19
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
2807-2813
UT code for WoS article
000458402700046
EID of the result in the Scopus database
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