Efficient degradation of Azorubin S colourant in the commercial jam-jelly food samples using TiO 2 -CoFe 2 O 4 nanocomposites in visible light

Shevale, Vrushali B.; Dhodamani, Ananta G.; Koli, Valmiki B.; Barkul, Rani P.; Jadhav, Jyoti P.; Delekar, Sagar D.

doi:10.1016/j.materresbull.2017.01.012

Cited by 30 publications

(16 citation statements)

References 51 publications

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“…30 The TiO 2 NPs or NCs samples show the broad peak in the range between 550 and 900 cm –1 , due to the various stretching vibrations such as Ti–O, O–Ti–O, Ti–O–C, and Ti–O–C=O. 35…”

Section: Resultsmentioning

confidence: 99%

Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Delekar

Dhodamani

et al. 2018

ACS Omega

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In this study, the in situ sol–gel method has been deployed to prepare the titanium dioxide/multiwalled carbon nanotubes (TiO 2 /MWCNTs) nanocomposite (NCs) powders with varying content of MWCNTs (0.01–1.0 wt %), to construct the dye-sensitized solar cells (DSSCs). First, binder-free NCs were deposited on a transparent-conducting F:SnO 2 (FTO) glass substrate by a doctor-blade technique and then anchored with Ru(II)-based dyes to either N719 or ruthenium phthalocyanine (RuPc). The structural and optical properties and interconnectivity of the materials within the composite are investigated thoroughly by various spectral techniques (XRD, XPS, Raman, FT-IR, and UV–vis), electron microscopy (HRTEM), and BET analysis. The experimental results suggest that the ratio of MWCNTs and TiO 2 in NCs, morphology, and their interconnectivity influenced their structural, optical, and photovoltaic properties significantly. Finally, the photovoltaic performances of the assembled DSSCs with different content of MWCNTs to TiO 2 films anchored with two different dyes were tested under one sun irradiation (100 mW/cm 2 ). The measured current–voltage ( IV ) curve and incident photon-to-current conversion efficiency (IPCE) spectra of TiO 2 /0.1 wt % MWCNTs (T@0.1 C) for N719 dye show three times more power conversion efficiency (η = 6.21%) which is opposed to an efficiency (η = 2.07%) of T@0.1 C for RuPc dye under the same operating conditions.

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Section: Resultsmentioning

confidence: 99%

Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Delekar

Dhodamani

et al. 2018

ACS Omega

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“…The strong high-frequency peaks located at 558 cm −1 and 428 cm −1 can be assigned to the tetrahedral Ni-O stretching vibration (Ni 2+ ) and Fe-O stretching vibration (Fe 3+ ), respectively [ 62 ], thereby confirming the formation of the spinel NiFe 2 O 4 phase. The broad peak observed at 900–570 cm −1 corresponds to the Ti-O-Ti bending of the anatase phase [ 63 ]. The vibration of bands centered at 1650–1550 cm −1 and 3600–3300 cm −1 refers to the characteristic band of the –OH group, indicating the absorbed hydroxyl groups at the surface of nanoparticles [ 64 ].…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Core‐Shell NiFe₂O₄ Shield with TiO₂/rGO Nanostructures for Biomedical and Environmental Applications

Nimshi

Vijaya

Al-Najar

et al. 2022

Bioinorganic Chemistry and Applications

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Multifunctional core@shell nanoparticles have been synthesized in this paper through 3 stages: NiFe2O4 nanoparticles by microwave irradiation using Pedalium murex leaf extract as a fuel, core@shell NiFe2O4@TiO2 nanoparticles by sol-gel, and NiFe2O4@TiO2@rGO by sol-gel using preprepared reduced graphene oxide obtained by modified Hummer’s method. XRD analysis confirmed the presence of both cubic NiFe2O4 spinel and tetragonal TiO2 rutile phases, while Raman spectroscopy analysis displays both D and G bands (ID/IG = 1.04) associated with rGO. Morphological observations by HRTEM reveal a core-shell nanostructure formed by NiFe2O4 core as confirmed by SAED with subsequent thin layers of TiO2 and rGO. Magnetic measurements show a ferromagnetic behavior, where the saturation magnetization drops drastically from 45 emu/g for NiFe2O4 to 15 emu/g after TiO2 and rGO nonmagnetic bilayers coating. The as-fabricated multifunctional core@shell nanostructures demonstrate tunable self-heating characteristics: rise of temperature and specific absorption rate in the range of ΔT = 3–10°C and SAR = 3–58 W/g, respectively. This effectiveness is much close to the threshold temperature of hyperthermia (45°C), and the zones of inhibition show the better effective antibacterial activity of NTG against various Gram-positive and Gram-negative bacterial strains besides simultaneous good efficient, stable, and removable sonophotocatalyst toward the TC degradation.

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“…The slope of this plot gives the rate constant (k), to be k = 4.18×10 . In the absence of light and catalyst there is no degradation because there is no redox reactions take place on the surface of photo catalyst [22].…”

Section: Photoelectrocatalytic Degradation Of Methylene Bluementioning

confidence: 99%

Photoelectrocatalytic Degradation of Methylene Blue using Spray Deposited Zno Thin Films under UV Illumination

Hunge¹

2017

MOJPS

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ZnO thin films have been deposited onto glass and FTO coated glass substrates using spray pyrolysis method. The structural, morphological, compositional and photocatalytic properties of ZnO thin films are studied. The photoelectrochemical (PEC) study shows that, both short circuit current (Isc) and open circuit voltage (Voc) are (Isc = 0.575 mA and Voc = 0.425 V) relatively higher at 450°C substrate temperature. The structure and morphological properties of ZnO thin films are studied by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM). XRD study reveals that the films are polycrystalline in nature with hexagonal crystal structure. FE-SEM images show that the substrate surface is well covered with a uniform and ball like morphology. Photoelectrocatalytic degradation of methylene blue dye in aqueous solutions is studied. The end result shows that the degradation percentage of methylene blue using ZnO photoelectrode has reached 95% under ultraviolet light illumination after 60 min.

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Efficient degradation of Azorubin S colourant in the commercial jam-jelly food samples using TiO 2 -CoFe 2 O 4 nanocomposites in visible light

Cited by 30 publications

References 51 publications

Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Multifunctional Core‐Shell NiFe₂O₄ Shield with TiO₂/rGO Nanostructures for Biomedical and Environmental Applications

Photoelectrocatalytic Degradation of Methylene Blue using Spray Deposited Zno Thin Films under UV Illumination

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Efficient degradation of Azorubin S colourant in the commercial jam-jelly food samples using TiO 2 -CoFe 2 O 4 nanocomposites in visible light

Cited by 30 publications

References 51 publications

Structural and Optical Properties of Nanocrystalline TiO2 with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Structural and Optical Properties of Nanocrystalline TiO2 with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Multifunctional Core‐Shell NiFe2O4 Shield with TiO2/rGO Nanostructures for Biomedical and Environmental Applications

Photoelectrocatalytic Degradation of Methylene Blue using Spray Deposited Zno Thin Films under UV Illumination

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Product

Resources

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Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Structural and Optical Properties of Nanocrystalline TiO₂ with Multiwalled Carbon Nanotubes and Its Photovoltaic Studies Using Ru(II) Sensitizers

Multifunctional Core‐Shell NiFe₂O₄ Shield with TiO₂/rGO Nanostructures for Biomedical and Environmental Applications