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2 article(s) from Kumar, Ajay

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

Ashish Kumar,
Christian Schuerings,
Suneel Kumar,
Ajay Kumar and
Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

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Figure 1: Powder X-ray diffraction patterns of g-C₃N₄, CT and CTCN heterojunction.

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Figure 2: FTIR spectra of g-C₃N₄, CT and CTCN heterojunction.

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Figure 3: Thermogravimetric analysis plots of g-C₃N₄, CT and CTCN heterojunction.

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Figure 4: SEM images of (a, b) g-C₃N₄ sheets, (c, d) CT flakes and (e, f) CTCN heterojunctions.

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Figure 5: TEM images of (a, b) g-C₃N₄ nanosheets, (c, d) CT flakes and (e, f) CTCN heterojunction.

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Figure 6: (a) UV–visible diffuse reflectance spectroscopy (DRS) spectra for g-C₃N₄, CT and CTCN heterojunctio...

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Figure 7: Photoluminescence spectra of g-C₃N₄, CT and CTCN heterojunction.

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Figure 8: Nitrogen adsorption–desorption curves for (a) g-C₃N₄ (b) CT and (c) CTCN heterojunction; BET surfac...

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Figure 9: Time-dependent absorption spectra of RhB degradation with the CTCN heterojunction under (a) UV ligh...

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Figure 10: Kinetic curves obtained by applying (a, b, c) pseudo-first-order and (d, e, f) the modified Freundl...

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Figure 11: Time-dependent absorption spectra of BPA degradation under sunlight irradiation (a) pure BPA (witho...

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Figure 12: (a) Photocatalyst reusability up to three cycles and (b) powder XRD pattern of a CTCN heterojunctio...

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Figure 13: Plausible mechanism of degradation of pollutants under sunlight irradiation using the CTCN heteroju...

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Figure 14: Effect of scavengers on the photocatalytic degradation of RhB using the CTCN heterojunction photoca...

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Full Research Paper

Published 21 Feb 2018

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Synthesis of embedded Au nanostructures by ion irradiation: influence of ion induced viscous flow and sputtering

Udai B. Singh,
D. C. Agarwal,
S. A. Khan,
S. Mohapatra,
H. Amekura,
D. P. Datta,
Ajay Kumar,
R. K. Choudhury,
T. K. Chan,
Thomas Osipowicz and
D. K. Avasthi

Beilstein J. Nanotechnol. 2014, 5, 105–110, doi:10.3762/bjnano.5.10

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Figure 1: Cross-sectional TEM image of the pristine sample.

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Figure 2: (a) Cross-sectional TEM image of sample irradiated with a fluence of 3 × 10¹⁶ ions/cm². (b) Higher ...

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Figure 3: The size distribution of the recoil-implanted Au NPs after the fluence of 3 × 10¹⁶ ions/cm².

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Figure 4: (a) HRBS spectra of pristine sample and sample irradiated with a fluence of 3 × 10¹⁶ ions/cm². (b) ...

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Full Research Paper

Published 29 Jan 2014

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Perovskite-structured CaTiO3 coupled with g-C3N4 as a heterojunction photocatalyst for organic pollutant degradation

Synthesis of embedded Au nanostructures by ion irradiation: influence of ion induced viscous flow and sputtering

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation