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.

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.

Micro-Structural Properties of Zinc Oxide Nano-Particles Synthesized by Bio-Polymeric Templates

2014 ◽  
Vol 906 ◽  
pp. 190-195
Author(s):  
Sujata Mandal ◽  
Dominic Savio ◽  
S.J. Selvaraj ◽  
S. Natarajan ◽  
Asit Baran Mandal
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Nano Particles ◽  
Oxide Nanoparticles ◽  
Electron Microscopic ◽  
Cellulose Fibres ◽  
Wurtzite Phase ◽  
Crystallite Sizes ◽  
Polymeric Templates

Zinc and iron oxide nanoparticles were synthesized using natural bio-polymeric templates viz. cellulose and sodium alginate. Cellulose fibres from different sources viz. filter-and blot-papers, were used as templates for this purpose. The synthesized Zinc oxide nanoparticles were characterized by X-ray diffraction (XRD), fourier transform infra-red spectra (FT-IR), UV-Visible spectrophotomer (UV-Vis) and scanning electron microscopic (SEM) studies. XRD studied confirmed the formation of highly crystalline hexagonal wurtzite phase of ZnO in all the synthesized nanoparticles. The average crystallite sizes of the nanoparticles obtained using different templates, were well below 50 nm. Characteristics of the zinc oxide nanoparticles obtained by template-based techniques were compared with those obtained by co-precipitation technique. Influence of various templates on the characteristics of metal oxide nanoparticles was studied.

Preparation, characterisation and optical properties of zinc oxide nanoparticles obtained by new intercalation chemical route

2009 ◽  
Vol 2 (1/2/3/4/5/6) ◽  
pp. 100
Author(s):  
A.A. Al Ghamdi ◽  
S. Al Heniti ◽  
E.H. El Mossalamy ◽  
M. Al Assiri ◽  
H. Al Gharni ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Chemical Route

A facile chemical route for recovery of high quality zinc oxide nanoparticles from spent alkaline batteries

2016 ◽  
Vol 51 ◽  
pp. 190-195 ◽  
Author(s):  
Akash Deep ◽  
Amit L. Sharma ◽  
Girish C. Mohanta ◽  
Parveen Kumar ◽  
Ki-Hyun Kim
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
High Quality ◽  
Chemical Route ◽  
Alkaline Batteries

Hydroponic grown tobacco plants respond to zinc oxide nanoparticles and bulk exposures by morphological, physiological and anatomical adjustments

2019 ◽  
Vol 46 (4) ◽  
pp. 360 ◽  
Author(s):  
Maryam Mazaheri Tirani ◽  
Maryam Madadkar Haghjou ◽  
Ahmad Ismaili
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Essential Element ◽  
Inorganic Nanoparticles ◽  
Wall Thickening ◽  
Oxide Nanoparticles ◽  
Ionic Form ◽  
Natural Form ◽  
Nano Zno ◽  
Root And Shoot Length

Zinc oxide nanoparticles (NPs) are the third highest in terms of global production among the various inorganic nanoparticles, and there are concerns because of their worldwide availability and accumulation in the environment. In contrast, zinc is an essential element in plant growth and metabolism, and ZnO NPs (nano-ZnO) may have unknown interactions with plants due to their small sizes as well as their particular chemical and physical characteristics. The present study examined the effect of nano-ZnO (25nm) and bulk or natural form (<1000nm, bulk-ZnO), compared with zinc in the ionic form (ZnSO4) on Nicotiana tabacum seedlings in a nutrient solution supplemented with either nano-ZnO, bulk-ZnO (0.2, 1, 5 and 25µM) or ZnSO4 (control) for 21 days. Results showed that nano-ZnO at most of the levels and 1µM bulk-ZnO positively affected growth (root and shoot length/dry weight), leaf surface area and its metabolites (auxin, phenolic compounds, flavonoids), leaf enzymatic activities (CAT, APX, SOD, POX, GPX, PPO and PAL) and anatomical properties (root, stem, cortex and central cylinder diameters), while bulk-ZnO caused decreases at other levels. The activities of enzymes were induced to a greater extent by intermediate nano-ZnO levels than by extreme concentrations, and were higher in nano-ZnO treated than in bulk treated tobacco. As the ZnO level increased, the vascular expansion and cell wall thickening of the collenchyma/parenchyma cells occurred, which was more pronounced when treated by NPs than by its counterpart. The Zn content of root and leaf increased in most of ZnO treatments, whereas the Fe content of leaves decreased. Our findings indicate that tobacco responded positively to 1µM bulk-ZnO and to nearly all nano-ZnO levels (with the best levels being at 0.2µM and 1µM) by morphological, physiological and anatomical adjustments.

Fabrication and Characterization of the Electrospun Polyvinyl Alcohol Nanofibers Incorporated with the Extracted Fruit Peel Pectin and Zinc Oxide Nanoparticles

2021 ◽  
Vol 10 (1) ◽  
pp. 20200050
Author(s):  
Seyedeh Nooshin Banitaba ◽  
Arezou Khoshnama ◽  
Nazanin Poursharifi ◽  
Mina Nasari ◽  
Dariush Semnani ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Polyvinyl Alcohol ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Fruit Peel ◽  
Fabrication And Characterization
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