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3 article(s) from Satpati, Biswarup

Role of oxygen in wetting of copper nanoparticles on silicon surfaces at elevated temperature

Tapas Ghosh and
Biswarup Satpati

Beilstein J. Nanotechnol. 2017, 8, 425–433, doi:10.3762/bjnano.8.45

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Figure 1: Plan view (a) TEM image (b) STEM-HAADF image of as-deposited copper nanoparticles on Si. Plan view ...

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Figure 2: SAED pattern of (a) as-deposited copper nanoparticles on the silicon substrate (b) the same sample ...

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Figure 3: X-ray diffraction pattern for the (a) as-deposited copper nanoparticles on silicon substrate and (b...

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Figure 4: (a),(b) Cross-sectional bright field TEM images and (c),(d) STEM-HAADF images of as-deposited and a...

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Figure 5: Copper, silicon and oxygen elemental line profiles collected from the region indicated by the arrow...

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Figure 6: (a–c) Cu nanoparticles on Si substrates deposited via the galvanic displacement reaction, and (d–f)...

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Figure 7: Cu nanoparticle distribution on a Si surface for (a) as-deposited and (b) annealed in nitrogen samp...

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Figure 8: (a) As-deposited Cu nanoparticles on Si and when annealed at 500 °C for 1 min in (b) nitrogen and (...

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Full Research Paper

Published 13 Feb 2017

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Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method

Sini Kuriakose,
Vandana Choudhary,
Biswarup Satpati and
Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2014, 5, 639–650, doi:10.3762/bjnano.5.75

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Figure 1: FESEM images of as-synthesized samples (a) PZ, (b) AZ21, (c) AZ410 and (d) AZ510 showing the effect...

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Figure 2: XRD patterns of as-synthesized ZnO and Ag–ZnO samples prepared with varying AgNO₃ concentrations an...

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Figure 3: (a) Low-magnification TEM image of ZnO nanostructures in sample PZ. (b) HRTEM image showing lattice...

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Figure 4: (a) Selected area diffraction pattern from Ag–ZnO hybrid nanostructures and in the inset low magnif...

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Figure 5: EFTEM images taken from the same area of a TEM image indicating the locations of different atoms ac...

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Figure 6: (a) UV-visible absorption spectra of samples AZ210, AZ310, AZ410 and AZ510 with varying Ag concentr...

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Figure 7: UV–visible absorption spectra showing the temporal evolution of the degradation of MB upon sun-ligh...

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Figure 8: Schematic band diagram of Ag–ZnO hybrid nanostructure showing the charge redistribution processes t...

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Figure 9: (a,b) Kinetics of MB photodegradation by Ag–ZnO hybrid plasmonic nanostructures with different Ag n...

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Full Research Paper

Published 15 May 2014

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Structural, optical and photocatalytic properties of flower-like ZnO nanostructures prepared by a facile wet chemical method

Sini Kuriakose,
Neha Bhardwaj,
Jaspal Singh,
Biswarup Satpati and
Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2013, 4, 763–770, doi:10.3762/bjnano.4.87

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Figure 1: XRD patterns of samples S1, S2 and S3 in log scale indexed to the hexagonal wurtzite structure of Z...

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Figure 2: SEM image of sample S2 showing flower-like structures consisting of nanosheets made up of nanoparti...

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Figure 3: Schematic diagram depicting mechanism for formation of flower-like ZnO structures involving (i) for...

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Figure 4: UV–vis absorption spectra showing temporal evolution of photocatalytic degradation of MB upon irrad...

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Figure 5: (a) XRD patterns of aged samples S1’, S2’ and S3’ in log scale indexed with peaks of ZnO and Zn(OH)₂...

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Figure 6: (a) UV–vis absorption spectra of aged samples S1’, S2’ and S3’, (b) room temperature PL spectra, in...

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Figure 7: UV–vis absorption spectra showing photocatalytic degradation of 10 μM MB upon irradiation with sun ...

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Full Research Paper

Published 18 Nov 2013

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