Thermal carbonization of nanoporous silicon: Formation of carbon nanofibres without a metal catalyst

Aggarwal, Gunjan; Mishra, Prabhash; Joshi, Bipin; Islam, S. S.

doi:10.1007/s12043-014-0773-y

Cited by 2 publications

(1 citation statement)

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“…However, detailed understanding of its chemical structure is still lacking. Few studies have been made to characterize the chemical structure of TCPSi by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). ,, These studies have confirmed the existence of Si–C and Si–O bonds in the material as well as carbonaceous species in some cases.…”

Section: Introductionmentioning

confidence: 99%

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR

et al. 2015

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As with all nanomaterials, characterization of the surface chemistry of mesoporous silicon (PSi) is crucial for the development in its diverse applications. Nuclear magnetic resonance (NMR) is one of the most powerful methods to study the chemistry of nanomaterials, but it is currently underutilized with PSi due to low signal-to-noise ratios achieved with this material which lead to very long measurement times. Here we show that endogenous radicals exist in thermally carbonized PSi and demonstrate the feasibility of solid-state dynamic nuclear polarization (DNP) NMR without addition of organic radicals. Use of DNP NMR is demonstrated to highly improve the signal-to-noise ratio while significantly reducing the measurement times. This technique opens new possibilities for the use of more advanced NMR techniques allowing the detailed characterization of complex materials such as PSi. Furthermore, the chemical structure of thermally carbonized PSi is studied by complementary techniques, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR

et al. 2015

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Tunable fluorescence from natural carbon source: Pandanus

Swapna

Devi

Ambadas³

2019

Pramana - J Phys

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Thermal carbonization of nanoporous silicon: Formation of carbon nanofibres without a metal catalyst

Cited by 2 publications

References 18 publications

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR

Tunable fluorescence from natural carbon source: Pandanus

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Thermal carbonization of nanoporous silicon: Formation of carbon nanofibres without a metal catalyst

Cited by 2 publications

References 18 publications

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization 13C NMR

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization 13C NMR

Tunable fluorescence from natural carbon source: Pandanus

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Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization ¹³C NMR