Optical properties and structural characteristics of zinc oxidecerium oxide doped polyvinyl alcohol films

Chandrakala, H.N.; Ramaraj, B.; Shivakumaraiah,; Siddaramaiah,

doi:10.1016/j.jallcom.2013.09.194

Cited by 64 publications

(23 citation statements)

References 26 publications

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“…In bulk form, CeO 2 is a singular rare earth oxide and does not show any crystallographic modifications by temperature increase up to its melting point. [1][2][3][4][5] Its various applications such as acting as a catalyst; use in sensor, solid oxide fuel cells, and sunscreen cosmetics; and its O 2 storage capacity, role in CO 2 solar conversion, and antibacterial applications are due to its idiosyncratic ability to alter the oxidation states. [6][7][8][9][10] Ordinarily, CeO 2 NPs are fabricated by physical and chemical methods including hydrothermal, 11 flame spray pyrolysis, 12 thermal decomposition, 13 aqueous precipitation, 14 and coprecipitation technique.…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial potential of green synthesized CeO2 nanoparticles from Olea europaea leaf extract

Maqbool

Nazar

Naz

et al. 2016

IJN

151

101

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This article reports the green fabrication of cerium oxide nanoparticles (CeO 2 NPs) using Olea europaea leaf extract and their applications as effective antimicrobial agents. O. europaea leaf extract functions as a chelating agent for reduction of cerium nitrate. The resulting CeO 2 NPs exhibit pure single-face cubic structure, which is examined by X-ray diffraction, with a uniform spherical shape and a mean size 24 nm observed through scanning electron microscopy and transmission electron microscopy. Ultraviolet-visible spectroscopy confirms the characteristic absorption peak of CeO 2 NPs at 315 nm. Fourier transform infrared spectroscopy reflects stretching frequencies at 459 cm −1 , showing utilization of natural components for the production of NPs. Thermal gravimetric analysis predicts the successful capping of CeO 2 NPs by bioactive molecules present in the plant extract. The antimicrobial studies show significant zone of inhibition against bacterial and fungal strains. The higher activities shown by the green synthesized NPs than the plant extract lead to the conclusion that they can be effectively used in biomedical application. Furthermore, reduction of cerium salt by plant extract will reduce environmental impact over chemical synthesis.

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Section: Introductionmentioning

confidence: 99%

“…20,21 This study reports green synthesis of CeO 2 NPs utilizing O. europaea leaf extract as an effective chelating agent without any acid or base treatment. The synthesized CeO 2 NPs are further characterized for their antibacterial and antifungal potential.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial potential of green synthesized CeO2 nanoparticles from Olea europaea leaf extract

Maqbool

Nazar

Naz

et al. 2016

IJN

151

101

View full text Add to dashboard Cite

show abstract

“…It has also been reported that surfactant plays an important role as growth inhibitor even at higher temperatures and may further increase the photostability of photocatalytic decomposition [25]. Along-with the use of capping molecules and surfactants during synthesis, annealing treatment at various temperatures is another parameter for obtaining ZnO NPs with 3 interesting morphologies and shapes along-with significant changes in the optical and electronic properties [29][30][31][32][33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Red shift of the band-edge photoluminescence emission and effects of annealing and capping agent on structural and optical properties of ZnO nanoparticles

Verma

Kole

Kumbhakar

2015

Journal of Alloys and Compounds

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“…The observed variation in UV–visible absorbance intensities of PVA/Rb 2 ZnO 2 NC films is in line with Beer's law. Wherein, the increased photonic absorption is monotonic with the number of light absorbing Rb 2 ZnO 2 semiconductors . While the UV–visible transmittance onsets (Figure ) reveal an exponential increase in UVA protecting abilities of PVA films on nanofiller additions, with shielding efficacies showing a monotonic dependence on filler content.…”

Section: Resultsmentioning

confidence: 91%

Yellow–green luminescent poly(vinyl alcohol) nanocomposite thick films as effective spectral manipulators

Subramani¹,

Nagaraj²,

Shivanna³

et al. 2018

J of Applied Polymer Sci

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Highly flexible and visibly transparent yellow–green fluorescent poly(vinyl alcohol) (PVA) based nanocomposite (NC) films with rubidium zincate (Rb2ZnO2) nano impregnates were developed through aqueous solution casting. The introduced rubidium zincate nanofillers impart UV shielding properties to PVA host, through UV to visible (fluorescent yellow–green) photon cutting. The rubidium zincate nanofiller impregnated PVA systems were also characterized for their structural, morphological, optical, and electrical behaviors by various analytical tools. The Fourier Transform Infrared (FTIR) and X‐ray diffraction (XRD) studies shed light on the changes in gross structural properties of PVA. WhileScanning Electron Microscopic (SEM) profiles support uniform filler dispersions, which aid high visible transparencies. Further, the UV–visible spectral measurements depict the changes in electronic band structure that validates novel fluorescent emission properties, established through fluorescent emission studies. The NC films show excellent visible transparency (72–84%), near hydrophobic surface wettabilities (ϴ = 82°–93°) and enhanced charge conduction, in addition to high flexibilities and UV photons induced fluorescent emission ( λEmi=585 nm). The yellow–green luminescent, Rb2ZnO2 nanofillers reinforced PVA NC films are effective spectral manipulators, which may be used as competent packaging materials for photonic display devices and to extend the short wavelength limit of solar cells. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46854.

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Optical properties and structural characteristics of zinc oxidecerium oxide doped polyvinyl alcohol films

Cited by 64 publications

References 26 publications

Antimicrobial potential of green synthesized CeO<sub>2</sub> nanoparticles from <em>Olea europaea</em> leaf extract

Antimicrobial potential of green synthesized CeO<sub>2</sub> nanoparticles from <em>Olea europaea</em> leaf extract

Red shift of the band-edge photoluminescence emission and effects of annealing and capping agent on structural and optical properties of ZnO nanoparticles

Yellow–green luminescent poly(vinyl alcohol) nanocomposite thick films as effective spectral manipulators

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