Effects of Pd nanoparticles on single-walled carbon nanotubes as high-sensitivity hydrogen gas sensors

Jun Min Lee, Seonghwa Ju, Jin Hyoun Joe, Sung Jin Kim, Wooyoung Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Pd nanoparticles (NPs) were successfully functionalized on the surfaces of single-walled carbon nanotubes (SWNTs) by dendrimer-mediated synthesis. The hydrogen sensing properties of the Pd NPs functionalized SWNTs were investigated. Pd NPs-dendrimer-SWNTs sensors show much better speeds and superior recovery rates but lower sensitivity compared toPd NPs-functionalized SWNTs directly fabricated due to the existence of dendrimers. Pyrolysis of the dendrimers by heat treatment resulted in afast response time and high sensitivity owing to the reduced length of the dendrimers. Theseresults demonstrate that the heat treatment of dendrimers in Pd NPs-dendrimer-SWNTs sensors can enable significant electrical conductance modulation upon exposure to extremely low concentrations (10 ppm) of hydrogen gas (H2) in air.

Original languageEnglish
Pages (from-to)342-346
Number of pages5
JournalJournal of Korean Institute of Metals and Materials
Volume48
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1

Fingerprint

Dendrimers
Gas Sensor
Single-walled Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
Chemical sensors
Hydrogen
Nanoparticles
Heat Treatment
Heat treatment
Pyrolysis
Sensor
Sensors
Conductance
Response Time
Modulation
Sensing
Recovery
Gases
Synthesis
Air

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

@article{4f13805021574a9a903e8bc7f5e0e459,
title = "Effects of Pd nanoparticles on single-walled carbon nanotubes as high-sensitivity hydrogen gas sensors",
abstract = "Pd nanoparticles (NPs) were successfully functionalized on the surfaces of single-walled carbon nanotubes (SWNTs) by dendrimer-mediated synthesis. The hydrogen sensing properties of the Pd NPs functionalized SWNTs were investigated. Pd NPs-dendrimer-SWNTs sensors show much better speeds and superior recovery rates but lower sensitivity compared toPd NPs-functionalized SWNTs directly fabricated due to the existence of dendrimers. Pyrolysis of the dendrimers by heat treatment resulted in afast response time and high sensitivity owing to the reduced length of the dendrimers. Theseresults demonstrate that the heat treatment of dendrimers in Pd NPs-dendrimer-SWNTs sensors can enable significant electrical conductance modulation upon exposure to extremely low concentrations (10 ppm) of hydrogen gas (H2) in air.",
author = "Lee, {Jun Min} and Seonghwa Ju and Joe, {Jin Hyoun} and Kim, {Sung Jin} and Wooyoung Lee",
year = "2010",
month = "4",
day = "1",
doi = "10.3365/KJMM.2010.48.04.342",
language = "English",
volume = "48",
pages = "342--346",
journal = "Journal of Korean Institute of Metals and Materials",
issn = "1738-8228",
publisher = "Korean Institute of Metals and Materials",
number = "4",

}

Effects of Pd nanoparticles on single-walled carbon nanotubes as high-sensitivity hydrogen gas sensors. / Lee, Jun Min; Ju, Seonghwa; Joe, Jin Hyoun; Kim, Sung Jin; Lee, Wooyoung.

In: Journal of Korean Institute of Metals and Materials, Vol. 48, No. 4, 01.04.2010, p. 342-346.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of Pd nanoparticles on single-walled carbon nanotubes as high-sensitivity hydrogen gas sensors

AU - Lee, Jun Min

AU - Ju, Seonghwa

AU - Joe, Jin Hyoun

AU - Kim, Sung Jin

AU - Lee, Wooyoung

PY - 2010/4/1

Y1 - 2010/4/1

N2 - Pd nanoparticles (NPs) were successfully functionalized on the surfaces of single-walled carbon nanotubes (SWNTs) by dendrimer-mediated synthesis. The hydrogen sensing properties of the Pd NPs functionalized SWNTs were investigated. Pd NPs-dendrimer-SWNTs sensors show much better speeds and superior recovery rates but lower sensitivity compared toPd NPs-functionalized SWNTs directly fabricated due to the existence of dendrimers. Pyrolysis of the dendrimers by heat treatment resulted in afast response time and high sensitivity owing to the reduced length of the dendrimers. Theseresults demonstrate that the heat treatment of dendrimers in Pd NPs-dendrimer-SWNTs sensors can enable significant electrical conductance modulation upon exposure to extremely low concentrations (10 ppm) of hydrogen gas (H2) in air.

AB - Pd nanoparticles (NPs) were successfully functionalized on the surfaces of single-walled carbon nanotubes (SWNTs) by dendrimer-mediated synthesis. The hydrogen sensing properties of the Pd NPs functionalized SWNTs were investigated. Pd NPs-dendrimer-SWNTs sensors show much better speeds and superior recovery rates but lower sensitivity compared toPd NPs-functionalized SWNTs directly fabricated due to the existence of dendrimers. Pyrolysis of the dendrimers by heat treatment resulted in afast response time and high sensitivity owing to the reduced length of the dendrimers. Theseresults demonstrate that the heat treatment of dendrimers in Pd NPs-dendrimer-SWNTs sensors can enable significant electrical conductance modulation upon exposure to extremely low concentrations (10 ppm) of hydrogen gas (H2) in air.

UR - http://www.scopus.com/inward/record.url?scp=77951587537&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951587537&partnerID=8YFLogxK

U2 - 10.3365/KJMM.2010.48.04.342

DO - 10.3365/KJMM.2010.48.04.342

M3 - Article

AN - SCOPUS:77951587537

VL - 48

SP - 342

EP - 346

JO - Journal of Korean Institute of Metals and Materials

JF - Journal of Korean Institute of Metals and Materials

SN - 1738-8228

IS - 4

ER -