A self-assembled flavin protective coating enhances the oxidative thermal stability of multi-walled carbon nanotubes

Somin Kim, Myungsu Jang, Minsuk Park, No Hyung Park, Sang-Yong Ju

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Multi-walled carbon nanotube (MWNT) has many commercial applications. However, its broad use is limited by the surface-bound oxygen lowering its thermal stability. Here, we developed a facile method to enhance the oxidative thermal resistance of MWNTs that involves molecular coating promoted surface passivation. In the approach, ball milling is employed to self assemble flavin mononucleotide (FMN) helically around MWNTs through non-covalent interactions with no increased defects in MWNT. Upon high temperature oxidation, the ribityl phosphate side chain of FMN in the nanoconstruct undergoes partial decomposition to generate a corresponding isoalloxazine derivative on the surface of the MWNTs. Transmission electron microscopy reveals that the oxidatively annealed material is comprised of a tight isoalloxazine coating stacked on the sidewalls of the MWNT. The results of thermal gravimetric analysis studies show that the coating further elevates long-term stability and the energy barrier for oxidation of the MWNT by 28 kJ/mol from 113 kJ/mol for the bare MWNT. The role of the isoalloxazine coating is proposed to be surface passivation from molecular oxygen. As a consequence of the passivation, the maximum oxidative temperature of the MWNT is raised to 938 K as compared to that of 843 K for bare MWNT.

Original languageEnglish
Pages (from-to)220-227
Number of pages8
JournalCarbon
Volume117
DOIs
Publication statusPublished - 2017 Jun 1

Fingerprint

Carbon Nanotubes
Protective coatings
Carbon nanotubes
Thermodynamic stability
Passivation
Flavin Mononucleotide
Coatings
Thermooxidation
Molecular oxygen
Gravimetric analysis
Energy barriers
Ball milling
4,6-dinitro-o-cresol
Heat resistance
Phosphates
Oxygen
Transmission electron microscopy
Derivatives
Decomposition
Oxidation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Kim, Somin ; Jang, Myungsu ; Park, Minsuk ; Park, No Hyung ; Ju, Sang-Yong. / A self-assembled flavin protective coating enhances the oxidative thermal stability of multi-walled carbon nanotubes. In: Carbon. 2017 ; Vol. 117. pp. 220-227.
@article{9edf0abc9915447db7799d91a980cb44,
title = "A self-assembled flavin protective coating enhances the oxidative thermal stability of multi-walled carbon nanotubes",
abstract = "Multi-walled carbon nanotube (MWNT) has many commercial applications. However, its broad use is limited by the surface-bound oxygen lowering its thermal stability. Here, we developed a facile method to enhance the oxidative thermal resistance of MWNTs that involves molecular coating promoted surface passivation. In the approach, ball milling is employed to self assemble flavin mononucleotide (FMN) helically around MWNTs through non-covalent interactions with no increased defects in MWNT. Upon high temperature oxidation, the ribityl phosphate side chain of FMN in the nanoconstruct undergoes partial decomposition to generate a corresponding isoalloxazine derivative on the surface of the MWNTs. Transmission electron microscopy reveals that the oxidatively annealed material is comprised of a tight isoalloxazine coating stacked on the sidewalls of the MWNT. The results of thermal gravimetric analysis studies show that the coating further elevates long-term stability and the energy barrier for oxidation of the MWNT by 28 kJ/mol from 113 kJ/mol for the bare MWNT. The role of the isoalloxazine coating is proposed to be surface passivation from molecular oxygen. As a consequence of the passivation, the maximum oxidative temperature of the MWNT is raised to 938 K as compared to that of 843 K for bare MWNT.",
author = "Somin Kim and Myungsu Jang and Minsuk Park and Park, {No Hyung} and Sang-Yong Ju",
year = "2017",
month = "6",
day = "1",
doi = "10.1016/j.carbon.2017.02.098",
language = "English",
volume = "117",
pages = "220--227",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

A self-assembled flavin protective coating enhances the oxidative thermal stability of multi-walled carbon nanotubes. / Kim, Somin; Jang, Myungsu; Park, Minsuk; Park, No Hyung; Ju, Sang-Yong.

In: Carbon, Vol. 117, 01.06.2017, p. 220-227.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A self-assembled flavin protective coating enhances the oxidative thermal stability of multi-walled carbon nanotubes

AU - Kim, Somin

AU - Jang, Myungsu

AU - Park, Minsuk

AU - Park, No Hyung

AU - Ju, Sang-Yong

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Multi-walled carbon nanotube (MWNT) has many commercial applications. However, its broad use is limited by the surface-bound oxygen lowering its thermal stability. Here, we developed a facile method to enhance the oxidative thermal resistance of MWNTs that involves molecular coating promoted surface passivation. In the approach, ball milling is employed to self assemble flavin mononucleotide (FMN) helically around MWNTs through non-covalent interactions with no increased defects in MWNT. Upon high temperature oxidation, the ribityl phosphate side chain of FMN in the nanoconstruct undergoes partial decomposition to generate a corresponding isoalloxazine derivative on the surface of the MWNTs. Transmission electron microscopy reveals that the oxidatively annealed material is comprised of a tight isoalloxazine coating stacked on the sidewalls of the MWNT. The results of thermal gravimetric analysis studies show that the coating further elevates long-term stability and the energy barrier for oxidation of the MWNT by 28 kJ/mol from 113 kJ/mol for the bare MWNT. The role of the isoalloxazine coating is proposed to be surface passivation from molecular oxygen. As a consequence of the passivation, the maximum oxidative temperature of the MWNT is raised to 938 K as compared to that of 843 K for bare MWNT.

AB - Multi-walled carbon nanotube (MWNT) has many commercial applications. However, its broad use is limited by the surface-bound oxygen lowering its thermal stability. Here, we developed a facile method to enhance the oxidative thermal resistance of MWNTs that involves molecular coating promoted surface passivation. In the approach, ball milling is employed to self assemble flavin mononucleotide (FMN) helically around MWNTs through non-covalent interactions with no increased defects in MWNT. Upon high temperature oxidation, the ribityl phosphate side chain of FMN in the nanoconstruct undergoes partial decomposition to generate a corresponding isoalloxazine derivative on the surface of the MWNTs. Transmission electron microscopy reveals that the oxidatively annealed material is comprised of a tight isoalloxazine coating stacked on the sidewalls of the MWNT. The results of thermal gravimetric analysis studies show that the coating further elevates long-term stability and the energy barrier for oxidation of the MWNT by 28 kJ/mol from 113 kJ/mol for the bare MWNT. The role of the isoalloxazine coating is proposed to be surface passivation from molecular oxygen. As a consequence of the passivation, the maximum oxidative temperature of the MWNT is raised to 938 K as compared to that of 843 K for bare MWNT.

UR - http://www.scopus.com/inward/record.url?scp=85014454325&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014454325&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2017.02.098

DO - 10.1016/j.carbon.2017.02.098

M3 - Article

AN - SCOPUS:85014454325

VL - 117

SP - 220

EP - 227

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -