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Wyszukujesz frazę "Jeevanantham, V." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Chemically Modified Cellulose Capped Zinc Oxide Nanocomposite: Spectral and Optical Properties
Autorzy:
Jagadeeswari, R.
Selvakumar, P.
Jeevanantham, V.
Saravanan, R.
Powiązania:
https://bibliotekanauki.pl/articles/2049414.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemically modified cellulose
hydrothermal
XRD
surface morphology
effective mass approximation
Opis:
In this study, a new chemically modified cellulose polymer-capped ZnO nanopowder prepared by hydrothermal method using chemically modified cellulose polymer as capping agent was successfully reported. The structural characteristics of CMC-capped ZnO nanopowder was reported by FTIR, XRD, SEM and EDX studies. XRD results revealed crystallographic properties like crystal composition, phase purity and crystallite size of the prepared CMC-capped ZnO nanopowder and average size calculated by Debye Scherrer formula as 14.66 nm. EDX studies revealed that the presence of elemental compositions of capping agent in the nanopowder samples. The optical characterization of the CMC-capped ZnO nanopowder was studied using UV absorption (λ max = 303 nm) and PL spectroscopy (λ ex = 295 nm). The average crystal diameter and grain size were calculated by effective mass approximation formula and compared with XRD findings that agreed well and verified CMC capped ZnO with particle size of 193 nm. Thus, the promising optical characteristics shown by the synthesized CMC capped ZnO nanopowders exposes its potential usage in bio-medical fields.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 3; 911-915
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pseudocapacitive Characteristics of Mg Doped ZnO Nanospheres Prepared by Coprecipitation
Autorzy:
Arul, S.
Senthilnathan, T.
Jeevanantham, V.
Satheesh Kumar, K. V.
Powiązania:
https://bibliotekanauki.pl/articles/2049144.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
zinc oxide
Mg-doped ZnO
coprecipitation
cyclic voltammetry
EiS
Opis:
A n-type semiconductor ZnO has high transmittance features, excellent chemical stability and electrical properties. It is also commonly used in a range of fields, such as gas sensors, photocatalysts, optoelectronics, and solar photocell. Magnesium-doped zinc oxide (Mg-ZnO) nano powders were effectively produced using a basic chemical precipitation process at 45°C. Calcined Mg-ZnO nano powders have been characterized by FTIR, XrD, SEM-EDX and Pl studies. XRD measurements from Mg-ZnO revealed development of a crystalline structure with an average particle size of 85 nm and SEM analysis confirmed the spherical morphology. Electrochemical property of produced Mg-ZnO nanoparticles was analyzed and the specific capacitance value of 729 F g-1 at 0.5 A g-1 current density was recorded and retained a specific capacitance ~100 percent at 2 A g-1 current density.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 1141-1148
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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