An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells

Alvira Ayoub Arbab, Anam Ali Memon, Iftikhar Ali Sahito, Naveed Mengal, Kyung Chul Sun, Mumtaz Ali, Sung Hoon Jeong

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A novel organic heteroatom doping technique is proposed for the synthesis of N-doped multiwall carbon nanotube (MWCNT) heterostructures. The approach involves the effective doping of MWCNTs with nitrogen via a cationised bovine serum albumin (cBSA) protein complex. The cationization of BSA releases an exceptional number of activated nitrogen species present in localized amino groups, which are further embedded into the MWCNT framework. The amino groups present in BSA act as nitrogen donors and surface stabilizing agents to generate a highly conductive and functionalized carbon heterostructure. The doped nitrogen was present in the form of pyridinic and pyrrolic states, as evidenced by XPS analysis. Organic N-doped MWCNTs with predominant pyridinic N atoms displayed superior charge transfer (RCT = 0.06 Ω) owing to their superior electrocatalytic activity. A DSSC fabricated with organic N-doped MWCNT heterostructures exhibited a high conversion efficiency of 9.55%, which was similar to that of a Pt cathode, with an efficiency of 9.89%. The superior electrochemical performance of organic N-doped MWCNT heterostructures is due to the high charge polarization arising from the difference in electronegativity between nitrogen and carbon as well as the structural strain caused by the cationic BSA protein complex. Our proposed system provides new routes for the synthesis of organic heteroatom-doped nanomaterials for promising energy storage devices.

Original languageEnglish
Pages (from-to)8307-8322
Number of pages16
JournalJournal of Materials Chemistry A
Volume6
Issue number18
DOIs
StatePublished - 2018 Jan 1

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Carbon Nanotubes
Heterojunctions
Carbon nanotubes
Nitrogen
Carbon
Doping (additives)
Proteins
Electronegativity
Excipients
Bovine Serum Albumin
Nanostructured materials
Energy storage
Conversion efficiency
Charge transfer
Cathodes
X ray photoelectron spectroscopy
Dye-sensitized solar cells
Polarization
Atoms

Cite this

Arbab, Alvira Ayoub ; Memon, Anam Ali ; Sahito, Iftikhar Ali ; Mengal, Naveed ; Sun, Kyung Chul ; Ali, Mumtaz ; Jeong, Sung Hoon. / An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells. In: Journal of Materials Chemistry A. 2018 ; Vol. 6, No. 18. pp. 8307-8322.
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abstract = "A novel organic heteroatom doping technique is proposed for the synthesis of N-doped multiwall carbon nanotube (MWCNT) heterostructures. The approach involves the effective doping of MWCNTs with nitrogen via a cationised bovine serum albumin (cBSA) protein complex. The cationization of BSA releases an exceptional number of activated nitrogen species present in localized amino groups, which are further embedded into the MWCNT framework. The amino groups present in BSA act as nitrogen donors and surface stabilizing agents to generate a highly conductive and functionalized carbon heterostructure. The doped nitrogen was present in the form of pyridinic and pyrrolic states, as evidenced by XPS analysis. Organic N-doped MWCNTs with predominant pyridinic N atoms displayed superior charge transfer (RCT = 0.06 Ω) owing to their superior electrocatalytic activity. A DSSC fabricated with organic N-doped MWCNT heterostructures exhibited a high conversion efficiency of 9.55{\%}, which was similar to that of a Pt cathode, with an efficiency of 9.89{\%}. The superior electrochemical performance of organic N-doped MWCNT heterostructures is due to the high charge polarization arising from the difference in electronegativity between nitrogen and carbon as well as the structural strain caused by the cationic BSA protein complex. Our proposed system provides new routes for the synthesis of organic heteroatom-doped nanomaterials for promising energy storage devices.",
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An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells. / Arbab, Alvira Ayoub; Memon, Anam Ali; Sahito, Iftikhar Ali; Mengal, Naveed; Sun, Kyung Chul; Ali, Mumtaz; Jeong, Sung Hoon.

In: Journal of Materials Chemistry A, Vol. 6, No. 18, 01.01.2018, p. 8307-8322.

Research output: Contribution to journalArticle

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AU - Arbab, Alvira Ayoub

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