Drastic improvement of sensing characteristics in SnO2 nanowires by functionalizing with Pt

Han Gil Na; Ju Chan Yang; Dong Sub Kwak; Yong Jung Kwon; Chongmu Lee; Sang Sub Kim; Hyoun Woo Kim

doi:10.1166/jnn.2013.7703

Drastic improvement of sensing characteristics in SnO₂ nanowires by functionalizing with Pt

Han Gil Na, Ju Chan Yang, Dong Sub Kwak, Yong Jung Kwon, Chongmu Lee, Sang Sub Kim, Hyoun Woo Kim

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We fabricated SnO₂/Pt core-shell nanowires by means of a two-step process, in which Pt layers were sputtered onto the surface of networked SnO₂ nanowires. For Pt-functionalization, we have synthesized the SnO₂-Pt core-shell nanowires by depositing Pt layers using a sputtering method on bare SnO₂ nanowires, subsequently annealing and thus transforming the continuous Pt shell layers into Pt nanoparticles. The NO₂ gas sensing test demonstrated the ability of the Pt functionalization to attain the higher sensitivity and faster response than bare SnO₂ nanowires. The possible mechanisms for improvment of the sensing properties by Pt-functionalization were discussed.

Original language	English
Pages (from-to)	6216-6221
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	13
Issue number	9
DOIs	https://doi.org/10.1166/jnn.2013.7703
State	Published - Sep 2013

Keywords

Nanowires
NO
Pt
Sensors
SnO

Access to Document

10.1166/jnn.2013.7703

Cite this

@article{d4c4857dd09c4c12a697719925bd4d6b,

title = "Drastic improvement of sensing characteristics in SnO2 nanowires by functionalizing with Pt",

abstract = "We fabricated SnO2/Pt core-shell nanowires by means of a two-step process, in which Pt layers were sputtered onto the surface of networked SnO2 nanowires. For Pt-functionalization, we have synthesized the SnO2-Pt core-shell nanowires by depositing Pt layers using a sputtering method on bare SnO2 nanowires, subsequently annealing and thus transforming the continuous Pt shell layers into Pt nanoparticles. The NO2 gas sensing test demonstrated the ability of the Pt functionalization to attain the higher sensitivity and faster response than bare SnO2 nanowires. The possible mechanisms for improvment of the sensing properties by Pt-functionalization were discussed.",

keywords = "Nanowires, NO, Pt, Sensors, SnO",

author = "Na, {Han Gil} and Yang, {Ju Chan} and Kwak, {Dong Sub} and Kwon, {Yong Jung} and Chongmu Lee and Kim, {Sang Sub} and Kim, {Hyoun Woo}",

year = "2013",

month = sep,

doi = "10.1166/jnn.2013.7703",

language = "English",

volume = "13",

pages = "6216--6221",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

number = "9",

}

TY - JOUR

T1 - Drastic improvement of sensing characteristics in SnO2 nanowires by functionalizing with Pt

AU - Na, Han Gil

AU - Yang, Ju Chan

AU - Kwak, Dong Sub

AU - Kwon, Yong Jung

AU - Lee, Chongmu

AU - Kim, Sang Sub

AU - Kim, Hyoun Woo

PY - 2013/9

Y1 - 2013/9

N2 - We fabricated SnO2/Pt core-shell nanowires by means of a two-step process, in which Pt layers were sputtered onto the surface of networked SnO2 nanowires. For Pt-functionalization, we have synthesized the SnO2-Pt core-shell nanowires by depositing Pt layers using a sputtering method on bare SnO2 nanowires, subsequently annealing and thus transforming the continuous Pt shell layers into Pt nanoparticles. The NO2 gas sensing test demonstrated the ability of the Pt functionalization to attain the higher sensitivity and faster response than bare SnO2 nanowires. The possible mechanisms for improvment of the sensing properties by Pt-functionalization were discussed.

AB - We fabricated SnO2/Pt core-shell nanowires by means of a two-step process, in which Pt layers were sputtered onto the surface of networked SnO2 nanowires. For Pt-functionalization, we have synthesized the SnO2-Pt core-shell nanowires by depositing Pt layers using a sputtering method on bare SnO2 nanowires, subsequently annealing and thus transforming the continuous Pt shell layers into Pt nanoparticles. The NO2 gas sensing test demonstrated the ability of the Pt functionalization to attain the higher sensitivity and faster response than bare SnO2 nanowires. The possible mechanisms for improvment of the sensing properties by Pt-functionalization were discussed.

KW - Nanowires

KW - NO

KW - Pt

KW - Sensors

KW - SnO

UR - http://www.scopus.com/inward/record.url?scp=84885438704&partnerID=8YFLogxK

U2 - 10.1166/jnn.2013.7703

DO - 10.1166/jnn.2013.7703

M3 - Article

AN - SCOPUS:84885438704

SN - 1533-4880

VL - 13

SP - 6216

EP - 6221

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 9

ER -

Drastic improvement of sensing characteristics in SnO₂ nanowires by functionalizing with Pt

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this