Detail publikace

Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen

VALLEJOS VARGAS, S.

Originální název

Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We report for the first time the successful synthesis of palladium (Pd) nanoparticle (NP)-decorated tungsten trioxide (WO3) nanoneedles (NNs) via a two-step aerosol-assisted chemical vapor deposition approach. Morphological, structural, and elemental composition analysis revealed that a Pd(acac)(2) precursor was very suitable to decorate WO3 NNs with uniform and well-dispersed PdO NPs. Gas-sensing results revealed that decoration with PdO NPs led to an ultrasensitive and selective hydrogen (H-2) gas sensor (sensor response peaks at 1670 at 500 ppm of H-2) with low operating temperature (150 degrees C). The response of decorated NNs is 755 times higher than that of bare WO3 NNs. Additionally, at a temperature near that of the ambient temperature (50 degrees C), the response of this sensor toward the same concentration of H-2 was 23, which is higher than that of some promising sensors reported in the literature. Finally, humidity measurements showed that PdO/WO3 sensors displayed low-cross-sensitivity toward water vapor, compared to bare WO3 sensors. The addition of PdO NPs helps to minimize the effect of ambient humidity on the sensor response.

Klíčová slova

aerosol-assisted CVD; nanoneedles; nanoparticles; gas sensor

Autoři

VALLEJOS VARGAS, S.

Vydáno

4. 4. 2016

Nakladatel

AMER CHEMICAL SOC

Místo

WASHINGTON

ISSN

1944-8252

Periodikum

ACS applied materials & interfaces

Ročník

8

Číslo

16

Stát

Spojené státy americké

Strany od

10413

Strany do

10421

Strany počet

9

URL

http://pubs.acs.org/doi/abs/10.1021/acsami.6b00773

BibTex

@article{BUT170095,
  author="Stella {Vallejos Vargas}",
  title="Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen",
  journal="ACS applied materials & interfaces",
  year="2016",
  volume="8",
  number="16",
  pages="10413--10421",
  doi="10.1021/acsami.6b00773",
  issn="1944-8252",
  url="http://pubs.acs.org/doi/abs/10.1021/acsami.6b00773"
}