Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives

Anatase TiO2 nanocrystals were prepared by solvothermal synthesis and modified by in- situ generated Rh nanoparticles, with a starting nominal Rh:Ti atomic concentration of 0.01 and 0.05. After heat-treatment at 400 °C the TiO2 host was still in the anatase crystallographic phase, embedding Rh nanop...

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Authors: Epifani, Mauro, Kaciulis, Saulius, Mezzi, Alessio, Zhang, Ting, Arbiol, Jordi, Siciliano, Pietro, Landström, Anton, Concina, Isabella, Moumen, Abderrahim, Comini, Elisabetta, Xiangfeng, Chu
Format: article
Status:Versión aceptada para publicación
Publication Date:2020
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/218816
Online Access:http://hdl.handle.net/10261/218816
Access Level:Open access
Keyword:TiO2 nanocrystals
Noble metal additives
Acetone sensing
Rhodium
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spelling Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additivesEpifani, MauroKaciulis, SauliusMezzi, AlessioZhang, TingArbiol, JordiSiciliano, PietroLandström, AntonConcina, IsabellaMoumen, AbderrahimComini, ElisabettaXiangfeng, ChuTiO2 nanocrystalsNoble metal additivesAcetone sensingRhodiumAnatase TiO2 nanocrystals were prepared by solvothermal synthesis and modified by in- situ generated Rh nanoparticles, with a starting nominal Rh:Ti atomic concentration of 0.01 and 0.05. After heat-treatment at 400 °C the TiO2 host was still in the anatase crystallographic phase, embedding Rh nanoparticles homogeneously distributed and whose surface had been oxidized to Rh2O3, as established by X-ray diffraction, Transmission Electron Microscopy and X-ray Photoelectron spectroscopy. Moreover, Rh seemed also homogeneously distributed in elemental form or as Rh2O3 nanoclusters. The acetone sensing properties of the resulting materials were enhanced by Rh addition, featuring a response increase of one order of magnitude at the best operating temperature of 300 °C. Moreover, Rh addition enlarged the detection range down to 10 ppm whereas pure TiO2 was not able of giving an appreciable response already at a concentration as high as 50 ppm. From the sensing data, the enhancement of the sensor response was attributed to the finely dispersed Rh species and not to the oxidized Rh nanocrystals.ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme / Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. TZ has received funding from the CSC-UAB PhD scholarship program.Peer reviewedElsevierGeneralitat de CatalunyaAgencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)Universidad Autónoma de BarcelonaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/218816reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/ENE2017-85087-C3ENE2017-85087-C3/AEI/10.13039/501100011033info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/SEV-2017-0706SEV-2017-0706/AEI/10.13039/501100011033https://doi.org/10.1016/j.snb.2020.128338Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2188162026-05-22T06:33:51Z
dc.title.none.fl_str_mv Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
title Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
spellingShingle Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
Epifani, Mauro
TiO2 nanocrystals
Noble metal additives
Acetone sensing
Rhodium
title_short Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
title_full Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
title_fullStr Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
title_full_unstemmed Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
title_sort Rhodium as efficient additive for boosting acetone sensing by TiO2 nanocrystals. Beyond the classical view of noble metal additives
dc.creator.none.fl_str_mv Epifani, Mauro
Kaciulis, Saulius
Mezzi, Alessio
Zhang, Ting
Arbiol, Jordi
Siciliano, Pietro
Landström, Anton
Concina, Isabella
Moumen, Abderrahim
Comini, Elisabetta
Xiangfeng, Chu
author Epifani, Mauro
author_facet Epifani, Mauro
Kaciulis, Saulius
Mezzi, Alessio
Zhang, Ting
Arbiol, Jordi
Siciliano, Pietro
Landström, Anton
Concina, Isabella
Moumen, Abderrahim
Comini, Elisabetta
Xiangfeng, Chu
author_role author
author2 Kaciulis, Saulius
Mezzi, Alessio
Zhang, Ting
Arbiol, Jordi
Siciliano, Pietro
Landström, Anton
Concina, Isabella
Moumen, Abderrahim
Comini, Elisabetta
Xiangfeng, Chu
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Generalitat de Catalunya
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Universidad Autónoma de Barcelona
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv TiO2 nanocrystals
Noble metal additives
Acetone sensing
Rhodium
topic TiO2 nanocrystals
Noble metal additives
Acetone sensing
Rhodium
description Anatase TiO2 nanocrystals were prepared by solvothermal synthesis and modified by in- situ generated Rh nanoparticles, with a starting nominal Rh:Ti atomic concentration of 0.01 and 0.05. After heat-treatment at 400 °C the TiO2 host was still in the anatase crystallographic phase, embedding Rh nanoparticles homogeneously distributed and whose surface had been oxidized to Rh2O3, as established by X-ray diffraction, Transmission Electron Microscopy and X-ray Photoelectron spectroscopy. Moreover, Rh seemed also homogeneously distributed in elemental form or as Rh2O3 nanoclusters. The acetone sensing properties of the resulting materials were enhanced by Rh addition, featuring a response increase of one order of magnitude at the best operating temperature of 300 °C. Moreover, Rh addition enlarged the detection range down to 10 ppm whereas pure TiO2 was not able of giving an appreciable response already at a concentration as high as 50 ppm. From the sensing data, the enhancement of the sensor response was attributed to the finely dispersed Rh species and not to the oxidized Rh nanocrystals.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/218816
url http://hdl.handle.net/10261/218816
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/ENE2017-85087-C3
ENE2017-85087-C3/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/SEV-2017-0706
SEV-2017-0706/AEI/10.13039/501100011033
https://doi.org/10.1016/j.snb.2020.128338
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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