Advances in Natural Sciences: Nanoscience and Nanotechnology
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The prospect of using guava leaf extract for biosynthesizing chitosan nanoparticles
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
Chitosan is polysaccharide polymer used for biomedical applications and food
packaging. The aim of this investigation is to produce chitosan nanoparticles
(ChNPs) using guava leaf (Psidium guajava L.) extract as green synthesis of
nanoparticles using plant leaf extract is ecofriendly and cost-effective
approach. The leaves of guava are nontoxic, full of bioactive compounds, and
suitable alternativ...
#nano
Synthesis of gold nanorods with a longitudinal surface plasmon resonance peak of around 1250 nm
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
We prepared gold nanorods and joined them to chemicals such as tetrachloauric
(III) acid trihydrate, silver nitrate, hydroquinone, hexadecyltrimethylammonium
bromide, sodium hydroxide and sodium borohydride using the seed-mediated method.
The combination of hydroquinone, with or without salicylic acid, influences the
size of the gold nanorods, and this is demonstrated by the results of TEM
images,...
#nano
The role of NaOH and papaya latex bio-activator during production of carbon nanoparticle from rice husks
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
This research explains the role of NaOH and bio-activator from papaya latex in
the synthesis of carbon nanoparticles from rice husks in a water medium to
produce fullerene-like polytype of SiC. The process begins with the pyrolysis
and then the high energy milling (HEM) process followed by dispersion of NaOH
and coagulation of bio-activator. The HEM process creates residual stress which
produces n...
#nano
Characterization and x-ray absorption spectroscopy of ilmenite nanoparticles derived from natural ilmenite ore via acid-assisted mechanical ball-milling process*
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
In this work activated ilmenite nanoparticles were prepared by chemical-assisted
in mechanical ball-milling process from ilmenite ore as starting raw material.
The effect of milling process on their phase composition, particle size, surface
morphology and local structure were investigated. Phase identification and
crystalline structure of ilmenite mineral, milled samples and subsequent leached
res...
#nano
Preparation of magnetic composite based on zinc oxide nanoparticles and chitosan as a photocatalyst for removal of reactive blue 198
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
In this study a novel magnetic composite used as a photocatalyst with
combination of zinc oxide nanoparticles and chitosan (ZnO/Fe3O4/CS) was
synthesized by a simple co-precipitation method. The role of the prepared
magnetic nanocomposite is to improve the removal efficiency of textile dye due
to the photocatalytic activity of zinc oxide nanoparticles and reusable capacity
of Fe3O4 magnetic nanopa...
#nano
Synthesis, structural and photocatalytic characteristics of nano-Cu2-xSe
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2011
Large-scale synthesis of Cu2−xSe nanocrystals (nano-Cu2−xSe) with uniform size
was performed via a facile hydrothermal method at room temperature and
at 120 °C. Nano-Cu2−xSe with different structures could be synthesized by
changing the reaction/growth time, the Cu:Se molar ratios, and the initial
concentration of the precursors. The synthesized nano-Cu2-xSe was characterized
using various techniq...
#nano
Micro/nano-mechanical sensors and actuators based on SOI-MEMS technology
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2010
MEMS (micro-electro-mechanical systems) technology has undergone almost 40 years
of development, with significant technology advancement and successful
commercialization of single-functional MEMS devices, such as pressure sensors,
accelerometers, gyroscopes, microphones, micro-mirrors, etc. In this context of
MEMS technology, this paper introduces our studies and developments of novel
micro/nano-m...
#MEMS #mechanical sensor #electrostatic actuator #silicon nanowire
Characterization of the size distribution and aggregation of virus-like nanoparticles used as active ingredients of the HeberNasvac therapeutic vaccine against chronic hepatitis B*
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2019
The use of virus-like particles (VLPs) as antigens constitutes a well
established strategy in preventive vaccination. These non-infective particles
have a composition, size, and structure favoring their interaction and
processing by the immune system. Recombinant viral nucleocapsids encapsulating
bacterial nucleic acids result in potent Th1-driving immunogens. Several
antigens have been coadminist...
#nano
Evaluation of bio control potential of AgNPs synthesized from Trichoderma viride
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2020
Currently, there is a global effort to reduce the use of harmful substances,
particularly chemical pesticides in cultivation. The biological mechanism of
soil-borne phytopathogens has proven to be a good alternative to the use of
chemical pesticides. In recent times, synthesis of nanoparticle from fungus is a
trustworthy and sustainable method. The current study explores the synthesis of
silver na...
#nano
Synthesis and optical limiting studies of Au-doped TiO2 nanoparticles
Advances in Natural Sciences: Nanoscience and Nanotechnology - - 2011
A series of Au-doped TiO2 nanoparticles with different Au concentrations were
prepared by the sol–gel method using titanium (IV) isopropoxide and
tetrachloroaurate (III) trihydrate as precursors. The framework substitution of
Au in TiO2 nanoparticles was established by x-ray diffraction (XRD) and Fourier
transform infrared (FT-IR) techniques. X-ray diffraction (XRD) and transmission
electron micro...
#nano
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