Synthesis, characterization and optical properties of Zn1−xTixO nanoparticles prepared via a high-energy ball milling technique

Suwanboon, Sumetha; Amornpitoksuk, Pongsaton; Bangrak, Phuwadol

doi:10.1016/j.ceramint.2010.08.039

Cited by 46 publications

(20 citation statements)

References 28 publications

(32 reference statements)

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“…In preparation process, 300 rpm was used to provide ambient rpm and less heat generation to avoid contamination. HEBM technique has been reported as standard green method for synthesis of nanoparticles by many researchers 41 which also has been utilized by industries now a days for synthesis of different types of nanoparticles 38 , 79 , 80 . Synthesis of ZnO nanoparticles from their bulk counterpart by HEBM can be attributed to the high mechanical force generated due to grinding of bulk ZnO particles between WC balls.…”

Section: Discussionmentioning

confidence: 99%

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Verma

Panda

Jha

et al. 2017

Sci Rep

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This study investigates the in vivo cytotoxicity of ZnO nanoparticles synthesized at industrial scale with embryonic Zebrafish. Industrial synthesis of ZnO nanoparticles was mimicked at lab scale by high energy ball milling technique by milling bulk ZnO particles for 15 h. Synthesized 7 h and 10 h ZnO nanoparticles showed significant alteration of size, zeta potential and optical properties in comparison to Bulk ZnO. Mortality and hatching rate in Zebrafish embryos were influenced by these alterations. Size and charge dependent effect of ZnO nanoparticles exposure on physiology and development of Zebrafish embryos were evident by malfunctioned organ development and abnormal heartbeat rate. Similar dependency on quenching of ROS due to influential hydrogen bond interaction with glycine residue of Sod1 oxidative stress protein and increased apoptosis were observed in cells. The study revealed the mechanism of cytotoxicity in exposed embryonic Zebrafish as an effect of accumulation and internalization inside cells instigating to generation of hypoxic condition and interference with the normal adaptive stress regulation signaling pathways leading towards enhanced apoptosis. The study revealed hidden size and charge dependent in vivo cytotoxicity mechanism of ZnO nanoparticles in Zebrafish embryos insight of the environmental and clinical importance of attention on industrially synthesized ZnO nanoparticles.

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Section: Discussionmentioning

confidence: 99%

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Verma

Panda

Jha

et al. 2017

Sci Rep

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“…microstrain (<ε 2 > 1/2 ) 17 have been refined by a standard least square method assuming the peak shapes as a pseudo-Voigt function 18, 19 . X-Ray Diffraction and the Rietveld refinement: For Rietveld analysis, MAUD 2.33 16 software has been employed.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and charge carrier dynamics in Dy substituted phase stabilized cubic Bi₂O₃

Bandyopadhyay

Dutta

2015

RSC Adv.

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Room temperature phase stabilization of cubic Bi 2 O 3 has been achieved by adding Dy 2 O 3 as dopant, using low temperature citrate-auto-ignition method. The samples were sintered at different temperatures retaining the cubic fluorite structure. Rietveld refinement of the X-ray diffraction profiles has given the detailed microstructural information of the prepared samples.The transmission electron micrographs confirmed the presence of atomic planes as obtained from X-ray diffraction. The Uv-Vis spectra show a red shift of the absorption peak with the increase in sintering temperature. Impedance spectroscopy studies of the samples exhibited thermally activated non-Debye type relaxation process. In addition, the studies of electrical conductivity have suggested the negative temperature coefficient of resistance (NTCR) behavior of the samples. The comparable values of activation energies, obtained from different parameters, indicated that the ions follow same type of mechanism for conduction as well as for relaxation.The temperature independence of the processes has been confirmed from scaling of different spectra. The correlation between structural and electrical properties of the samples has been discussed and interpreted accordingly. INDIA email: adutta@phys.buruniv.ac.in ; Telephone: +913422657800; Fax: +91342 2634015 1. Introduction: In the family of solid oxide full cells (SOFC), Bi 2 O 3 based materials have proven themselves as one of the most important members because of their superiority in oxide ion conductivity over conventional Ceria or Zirconia based ionic conductors 1-4 . Out of its different crystallographicpolymorphs, interest has been centered on cubic δ-Bi 2 O 3 because of its ability for highest oxygen ion conductivity among the family 5 . This cubic fluorite structure of bismuth oxide consists of a disordered oxygen sub-lattice with a short-range ordering of oxygen vacancies along the <111> direction 6 . The high ionic conductivity of δ-Bi 2 O 3 is ascribed both to the large number of oxygen vacancies and high anionic mobility. The high concentration of oxygen vacancies (25% of the lattice sites) is a result of obtaining the cubic fluorite structure with Bi 3+ cation. The high anionic mobility is related to the high polarizability of the Bi 3+ cation with its lone pair of electrons 7 . However, this cubic phase is only stable in a narrow temperature range (730°C to melting point), and transforms to monoclinic α-phase through a dramatic phase transition 8 . The cubic phase at high temperature can be stabilized down to room temperature by the additions of dopants of comparable cation radii such as isovalent rare earth cations (Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , Yb 3+ ),Y 3+ , WO 3 etc 1, 9 . However, these doped bismuth oxides show lower ionic conductivity and

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“…10 Researchers have been reported many methods for the synthesis of metal-doped ZnO nanoparticles. [11][12][13][14][15] Among them, ZnO prepared by the sol-gel process has attracted considerable attention because of its simplicity and the fine * Author for correspondence (mujahidm72@gmail.com) crystalline quality. ZnO is doped with various metals or nonmetal in order to shift its absorbance band towards higher wavelength of visible light.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and electrical properties of visible-light-driven Pt-ZnO/CNT

Mujahid

2015

Bull Mater Sci

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This paper deals with synthesis of ZnO doped with different concentrations of platinum (Pt) and its deposition on the surface of multi-walled carbon nanotube (MWCNT). The synthesized nanocomposite material was characterized by standard analytical techniques like X-ray diffraction (XRD), UV-vis spectroscopy, scanning electron microscopy, transmission electron microscopy and energy-dispersive spectroscopy. The XRD analysis confirms two things; first, synthesized nanocomposite shows no impurity peaks indicating products being crystalline in nature, second, the phase structure of composite remains unchanged during doping of Pt into ZnO crystal. Results indicate that the incorporation of dopant into ZnO coated on the surface of MWCNT was found to shift the fundamental absorption edge towards the longer wavelength side. The impedance analysis was carried out to distinguish between the grain and grain boundary contributions to the system. The dielectric property was strongly affected by increasing the dopant concentration. The dielectric constant (ε) and dielectric loss (tan δ) factors decrease with the increase in frequency only upto a certain limit. The a.c. conductivity also increases with the increase in frequency.

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Synthesis, characterization and optical properties of Zn1−xTixO nanoparticles prepared via a high-energy ball milling technique

Cited by 46 publications

References 28 publications

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Microstructure and charge carrier dynamics in Dy substituted phase stabilized cubic Bi₂O₃

Synthesis, characterization and electrical properties of visible-light-driven Pt-ZnO/CNT

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Synthesis, characterization and optical properties of Zn1−xTixO nanoparticles prepared via a high-energy ball milling technique

Cited by 46 publications

References 28 publications

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Altered physiochemical properties in industrially synthesized ZnO nanoparticles regulate oxidative stress; induce in vivo cytotoxicity in embryonic zebrafish by apoptosis

Microstructure and charge carrier dynamics in Dy substituted phase stabilized cubic Bi2O3

Synthesis, characterization and electrical properties of visible-light-driven Pt-ZnO/CNT

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Microstructure and charge carrier dynamics in Dy substituted phase stabilized cubic Bi₂O₃