“…It can be seen from the figures that the number of product particles per unit volume increased gradually with time. To compare with ammonium manganese trifluoride (NH 4 MnF 3 ) nanoparticles with a size of 20–80 nm, which was synthesized by a reverse microemulsion method, in our work, the particles in the reaction ranged from about 30 to 50 μm at the beginning to about 2–5 μm at the end, which laid a good foundation for the subsequent reaction.…”
This paper reported
a dry synthesis and characterization of cerium
tetrafluoride (CeF
4
) and cerium trifluoride (CeF
3
) nanoscale polycrystals (NPs). The CeF
4
NPs were spherical
or flaky and approximately 10 ± 2 nm in diameter. The CeF
3
NPs were rod-shaped nanorods with a length of about 150 ±
5 nm and a diameter of about 20 ± 2 nm. The first step was to
synthesize the intermediate product—(NH
4
)
4
CeF
8
by mixing CeO
2
and NH
4
HF
2
at a molar ratio of 1:6 at 390 K. The structural characterization
was analyzed by X-ray powder diffraction (XRD) and scanning electron
microscopy (SEM). Then, (NH
4
)
4
CeF
8
was heated in an argon gas flow to synthesize the CeF
3
and CeF
4
NPs. The products were characterized by X-ray
powder diffraction (XRD), scanning electron microscopy (SEM), and
energy-dispersive X-ray spectroscopy (EDS). The properties of CeF
3
and CeF
4
NPs were further evaluated by transmission
electron microscopy (TEM), selected area electron diffraction pattern
(SAED), and high-resolution transmission electron microscopy (HRTEM).
The findings provided an alternative strategy for the synthesis of
nanometer fluorides, which could be a reference for high-performance
research on other nanometer fluorides.
“…It can be seen from the figures that the number of product particles per unit volume increased gradually with time. To compare with ammonium manganese trifluoride (NH 4 MnF 3 ) nanoparticles with a size of 20–80 nm, which was synthesized by a reverse microemulsion method, in our work, the particles in the reaction ranged from about 30 to 50 μm at the beginning to about 2–5 μm at the end, which laid a good foundation for the subsequent reaction.…”
This paper reported
a dry synthesis and characterization of cerium
tetrafluoride (CeF
4
) and cerium trifluoride (CeF
3
) nanoscale polycrystals (NPs). The CeF
4
NPs were spherical
or flaky and approximately 10 ± 2 nm in diameter. The CeF
3
NPs were rod-shaped nanorods with a length of about 150 ±
5 nm and a diameter of about 20 ± 2 nm. The first step was to
synthesize the intermediate product—(NH
4
)
4
CeF
8
by mixing CeO
2
and NH
4
HF
2
at a molar ratio of 1:6 at 390 K. The structural characterization
was analyzed by X-ray powder diffraction (XRD) and scanning electron
microscopy (SEM). Then, (NH
4
)
4
CeF
8
was heated in an argon gas flow to synthesize the CeF
3
and CeF
4
NPs. The products were characterized by X-ray
powder diffraction (XRD), scanning electron microscopy (SEM), and
energy-dispersive X-ray spectroscopy (EDS). The properties of CeF
3
and CeF
4
NPs were further evaluated by transmission
electron microscopy (TEM), selected area electron diffraction pattern
(SAED), and high-resolution transmission electron microscopy (HRTEM).
The findings provided an alternative strategy for the synthesis of
nanometer fluorides, which could be a reference for high-performance
research on other nanometer fluorides.
“…The quality and performance of the produced graphene cost and its processability should be considered when determining the optimal substrate. 5–7,10–13,15–17,43,45,52,55,56,60,63,67,69,71,73,548–609…”
Section: Rising Issues In the Industrial Production Of Graphene Nanom...mentioning
Graphene (“G”) and its derivatives' (graphene oxide (“GO”), reduced GO (rGO), doped “G”, and functionalized “G” (F-“G”) nanomaterials (NMs)) unique chemical and physical features have motivated huge efforts and achieved...
“…For the past several decades, however, the fast depletion of fossil fuels due to their rising use has shifted the research dominantly to the progress and usage of renewable energy resources, for example wind, tidal, solar energy, and hydrogen. 1–105 Energy storage technologies must be efficient for renewable energies to be broadly used at domestic as well as industrial levels. Portable electric vehicles (EVs) and hybrid electric car applications are being extensively expanded to meet the needs of our information-rich, mobile culture.…”
With the rising need for energy resources, considerable work has done into building novel energy storage technologies. Supercapacitors (SCs) and batteries are a highly competitive choice for electrochemical energy storage...
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