SERS activity and spectroscopic properties of Zn and ZnO nanostructures obtained by electrochemical and green chemistry methods for applications in biology and medicine

2020 ◽  
Vol 22 (48) ◽  
pp. 28100-28114
Author(s):  
Edyta Proniewicz ◽  
Agnieszka Tąta ◽  
Anna Wójcik ◽  
Maria Starowicz ◽  
Joanna Pacek ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Chemistry ◽  
Zinc Oxide Nanoparticles ◽  
Spectroscopic Properties ◽  
Body Fluids ◽  
Oxide Nanoparticles ◽  
Selective Detection ◽  
Zno Nanostructures ◽  
Pure Zinc

This work evaluates the ability of homogeneous, stable, and pure zinc oxide nanoparticles (ZnONPs-GS) synthesized by “green chemistry” for the selective detection of four neurotransmitters present in body fluids and promotion of the SERS effect.

scholarly journals The investigation of the effects of synthesized Zinc oxide nanoparticles on the DNA using green chemistry

2020 ◽  
Vol 7 (2) ◽  
pp. 145-152
Author(s):  
Mahnaz Jangi ◽  
Azadeh Mohammadgholi ◽  
Adele Divsalr ◽  
◽  
◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Chemistry ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles

Biosynthesis and characterization of phyto mediated zinc oxide nanoparticles: A green chemistry approach

2014 ◽  
Vol 134 ◽  
pp. 13-15 ◽  
Author(s):  
P. Vanathi ◽  
P. Rajiv ◽  
S. Narendhran ◽  
Sivaraj Rajeshwari ◽  
Pattanathu K.S.M. Rahman ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Chemistry ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles

scholarly journals Structural and Spectroscopic Properties of Zno/Pva Nanocomposites

2019 ◽  
Vol 8 (3) ◽  
pp. 2292-2294
Keyword(s):  
Zinc Oxide ◽  
Polyvinyl Alcohol ◽  
Zinc Oxide Nanoparticles ◽  
Ultra Violet ◽  
Spectroscopic Properties ◽  
Material Structure ◽  
Oxide Nanoparticles ◽  
Wurtzite Phase ◽  
Chemical Route ◽  
Nano Zno

Zinc oxide–Polyvinyl alcohol (ZnO/PVA) nanocomposites doped with varying concentrations of nano ZnO were prepared by solution casting method. Zinc oxide nanoparticles were synthesized by simple chemical route. Structural, Optical and Spectroscopic properties of the prepared nanocomposites were studied by using Ultra Violet Visible Spectrophotometer (UV-Vis), X-ray diffraction (XRD), Fourier Transform Infra Red Spectrophotometer (FTIR) and SEM techniques. XRD and FTIR are used to determine the effect of the synthetic conditions and resulting processing on the material structure. XRD reveals the presence of nano ZnO with hexagonal wurtzite phase in the polymer matrix. The peaks in FTIR spectra of the prepared films show the interaction between nano ZnO and the PVA polymer. SEM shows homogenous dispersion of zinc oxide nanoparticles in the polyvinyl alcohol matrix. The optical properties of ZnO/PVA nanocomposites have been investigated.

Structural and Thermal Diffusivity of Sm3+ Doped Willemite Glass Ceramics System from Waste Materials

2017 ◽  
Vol 268 ◽  
pp. 117-123
Author(s):  
I.A. Auwalu ◽  
Mohamed Kamari Halimah ◽  
A.W. Zaidan ◽  
K.T. Chan ◽  
U. Abdullahi
Keyword(s):  
Zinc Oxide ◽  
Thermal Diffusivity ◽  
Zinc Oxide Nanoparticles ◽  
Dopant Concentration ◽  
Glass Ceramics ◽  
Waste Materials ◽  
Zinc Silicate ◽  
Oxide Nanoparticles ◽  
Pure Zinc ◽  
State Technique

This study presents the formation of the zinc silicate from amorphous silica obtained from waste rice ash, with the addition of zinc oxide nanoparticles by conventional solid-state technique. The XRD showed the sharp intensive and small peaks while FTIR results indicated very slight variations in their peaks with the increased of samarium dopant concentrations. The FESEM clearly showed the cracks of zinc silicate doped with samarium the samples. The least thermal diffusivity values from 0.2039 to 0.1392 mm2/s acquired by pure zinc silicate (willemite) sintered at 1000°C. The thermal diffusivity was increasing with dopant concentration and decreasing with the rise in temperature (27-500°C). The thermal diffusivity curves revealed the exponential decay with the pores and cracks in the samples.

scholarly journals Leonotis Nepetifolia Mediated Eco-Friendly Synthesis of Zno Nps: Photocatalytic, Antioxidant Activities and Their Applications to Nano-Composite Electrode Material for Supercapacitor

2021 ◽  
Author(s):  
Gajendran Pavithra ◽  
Santhakumar kannappan
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Antioxidant Activities ◽  
Electrochemical Analysis ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Pure Zinc ◽  
X Ray

Abstract The present paper describes the green synthesis of Zinc oxide nanoparticles (ZnO NPs) from the flowers of L. nepetifolia. The synthesis of ZnO nanoparticles and examined by using Ultraviolet-visible spectroscopy, Fourier Transform-Infrared spectroscopy, X-ray Diffraction analysis, Dynamic Light Scattering analysis, Raman spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-ray spectroscopy, Transmission Electron Microscopy, and Thermogravimetric Analysis. The photocatalytic studies were followed using methylene blue (MB) dye by ZnO nanoparticles by using sunlight as a source. The degradation of MB dye is found to be 90 %. Then the synthesized ZnO nanoparticles help to evaluate the antioxidant activities. The antioxidant activities of ZnO nanoparticles were exhibiting through scavenging of Nitric oxide, Hydrogen peroxide, and DPPH free radicals. Furthermore, the electrochemical analysis of reduced Graphene Oxide-Zinc oxide (rGO-ZnO) nanocomposite shows that the prepared rGO-ZnO nanocomposite has a high specific capacitance of about 667 F g-1 in comparison with the pure Zinc oxide nanoparticles (200 F g-1) and has good cycling stability of around 1000 cycles. The synthesis of multifunctional ZnO nanoparticles by using natural plant products like seeds, leaves, flowers, etc may help to explore as environment-friendly which is opposite to chemical synthesis.

scholarly journals Fluorescent zinc oxide nanoparticles of Boswellia ovalifoliolata for selective detection of picric acid

2019 ◽  
Vol 2 ◽  
pp. 2002 ◽  
Author(s):  
Geetha Venkatesan ◽  
Rajagopalan Vijayaraghavan ◽  
Sarada Nallani Chakravarthula ◽  
Govindasamy Sathiyan
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Picric Acid ◽  
Oxide Nanoparticles ◽  
Selective Detection ◽  
Boswellia Ovalifoliolata
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