Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing

© 2016, Springer Science+Business Media Dordrecht. Abstract: Undoped In 2 O 3 and 0.25–1.00 wt% M (M=Pt, Nb, and Ru)-doped/loaded In 2 O 3 nanoparticles were successfully synthesized in a single-step flame spray pyrolysis technique using indium nitrate, platinum (II) acetylacetonate, niobium ethox...

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Main Authors: Inyawilert K., Channei D., Tamaekong N., Liewhiran C., Wisitsoraat A., Tuantranont A., Phanichphant S.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84957889030&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42117
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-421172017-09-28T04:25:18Z Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing Inyawilert K. Channei D. Tamaekong N. Liewhiran C. Wisitsoraat A. Tuantranont A. Phanichphant S. © 2016, Springer Science+Business Media Dordrecht. Abstract: Undoped In 2 O 3 and 0.25–1.00 wt% M (M=Pt, Nb, and Ru)-doped/loaded In 2 O 3 nanoparticles were successfully synthesized in a single-step flame spray pyrolysis technique using indium nitrate, platinum (II) acetylacetonate, niobium ethoxide, and ruthenium (III) acetylacetonate precursors. The undoped In 2 O 3 and M-doped In 2 O 3 nanoparticles were characterized by Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM & TEM). The BET average diameter of spherical nanoparticles was found to be in the range of 10.2–15.2 nm under 5/5 (precursor/oxygen) flame conditions. All XRD peaks were confirmed to correspond to the cubic structure of In 2 O 3 . TEM images showed that there is no Pt nanoparticle loaded on In 2 O 3 surface, suggesting that Pt should form solid solution with the In 2 O 3 lattice. Gas sensing studies showed that 0.5 wt% Pt doping in In 2 O 3 nanoparticles gave a significant enhancement of NO 2 sensing performances in terms of sensor response and selectivity. 0.5 wt% Pt/In 2 O 3 exhibited a high NO 2 response of ~1904 to 5 ppm NO 2 at 250 °C and good NO 2 selectivity against NO, H 2 S, H 2 , and C 2 H 5 OH. In contrast, Nb and Ru loading resulted in deteriorated NO 2 response. Therefore, Pt is demonstrated to be an effective additive to enhance NO 2 sensing performances of In 2 O 3 -based sensors. Graphical Abstract: [Figure not available: see fulltext.] 2017-09-28T04:25:18Z 2017-09-28T04:25:18Z 2016-02-01 Journal 13880764 2-s2.0-84957889030 10.1007/s11051-016-3341-1 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84957889030&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42117
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2016, Springer Science+Business Media Dordrecht. Abstract: Undoped In 2 O 3 and 0.25–1.00 wt% M (M=Pt, Nb, and Ru)-doped/loaded In 2 O 3 nanoparticles were successfully synthesized in a single-step flame spray pyrolysis technique using indium nitrate, platinum (II) acetylacetonate, niobium ethoxide, and ruthenium (III) acetylacetonate precursors. The undoped In 2 O 3 and M-doped In 2 O 3 nanoparticles were characterized by Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM & TEM). The BET average diameter of spherical nanoparticles was found to be in the range of 10.2–15.2 nm under 5/5 (precursor/oxygen) flame conditions. All XRD peaks were confirmed to correspond to the cubic structure of In 2 O 3 . TEM images showed that there is no Pt nanoparticle loaded on In 2 O 3 surface, suggesting that Pt should form solid solution with the In 2 O 3 lattice. Gas sensing studies showed that 0.5 wt% Pt doping in In 2 O 3 nanoparticles gave a significant enhancement of NO 2 sensing performances in terms of sensor response and selectivity. 0.5 wt% Pt/In 2 O 3 exhibited a high NO 2 response of ~1904 to 5 ppm NO 2 at 250 °C and good NO 2 selectivity against NO, H 2 S, H 2 , and C 2 H 5 OH. In contrast, Nb and Ru loading resulted in deteriorated NO 2 response. Therefore, Pt is demonstrated to be an effective additive to enhance NO 2 sensing performances of In 2 O 3 -based sensors. Graphical Abstract: [Figure not available: see fulltext.]
format Journal
author Inyawilert K.
Channei D.
Tamaekong N.
Liewhiran C.
Wisitsoraat A.
Tuantranont A.
Phanichphant S.
spellingShingle Inyawilert K.
Channei D.
Tamaekong N.
Liewhiran C.
Wisitsoraat A.
Tuantranont A.
Phanichphant S.
Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
author_facet Inyawilert K.
Channei D.
Tamaekong N.
Liewhiran C.
Wisitsoraat A.
Tuantranont A.
Phanichphant S.
author_sort Inyawilert K.
title Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
title_short Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
title_full Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
title_fullStr Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
title_full_unstemmed Pt-doped In<inf>2</inf>O<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for NO<inf>2</inf> sensing
title_sort pt-doped in<inf>2</inf>o<inf>3</inf> nanoparticles prepared by flame spray pyrolysis for no<inf>2</inf> sensing
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84957889030&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42117
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