Resultado da Pesquisa
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP5W34M/3GD3G9T
Repositóriosid.inpe.br/mtc-m21b/2014/05.30.02.19.01   (acesso restrito)
Última Atualização2014:09.09.19.21.19 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2014/05.30.02.19.02
Última Atualização dos Metadados2018:06.04.03.04.08 (UTC) administrator
DOI10.1016/j.snb.2013.08.053
ISSN0250-6874
Rótuloscopus 2014-05 ZanettiRochRodrLong:2014:SoSyCh
Chave de CitaçãoZanettiRochRodrLong:2014:SoSyCh
TítuloSoft-chemical synthesis, characterization and humidity sensing behavior of WO3/TiO2 nanopowders
Ano2014
Data de Acesso08 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho1585 KiB
2. Contextualização
Autor1 Zanetti, Sonia Maria
2 Rocha, Kleper de Oliveira
3 Rodrigues, José Augusto Jorge
4 Longo, Elson
Identificador de Curriculo1
2
3 8JMKD3MGP5W/3C9JHG9
Grupo1
2
3 LCP-CTE-INPE-MCTI-GOV-BR
Afiliação1 SENCER - Sensores Cerâmicos Ltda
2 SENCER - Sensores Cerâmicos Ltda
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Universidade Estadual Paulista (UNESP)
Endereço de e-Mail do Autor1 zanettism@gmail.com
2
3 jajr@lcp.inpe.br
Endereço de e-Mailmarcelo.pazos@inpe.br
RevistaSensors and Actuators B: Chemical
Volume190
Páginas40-47
Histórico (UTC)2018-06-04 03:04:08 :: administrator -> marcelo.pazos@inpe.br :: 2014
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveEXAFS
Extended Xray absorption fine structure (EXAFS) spectroscopies
Polymeric precursor methods
Situ XANES
Structural and surface characterization
Temperature-programmed reduction
WO<sub>3</sub>/TiO <sub>2</sub>
X-ray absorption near edge spectroscopy
Chemisorption
Electric properties
Extended X ray absorption fine structure spectroscopy
Humidity sensors
Nanostructured materials
Polymers
Pore size
Spectrometry
Synthesis (chemical)
Transmission electron microscopy
X ray diffraction
X ray powder diffraction
Titanium dioxide
ResumoTungsten oxide/titania (WO3/TiO2) nanopowders were synthesized by the polymeric precursor method which varied the WO3 content between 0 and 10 mol%. The powders were thermally treated in a conventional furnace and their structural, microstructural and electric properties were evaluated by X-ray diffraction (XRD), Raman spectrometry, N 2 physisorption, NH3 chemisorption, temperature-programmed reduction (TPR), X-ray absorption near-edge spectroscopy (XANES) in situ XANES and extended X-ray absorption fine structure spectroscopy (EXAFS) and transmission electron microscopy (TEM). XRD and Raman spectrometry confirmed the homogeneous distribution of an amorphous WO3 phase in the TiO 2 matrix which stabilized the anatase phase through the generation of [TiO5·V0] or [TiO5·V 0] complex sites. Conventional TPR-H2 (temperature programmed reduction) along with XANES TPR-H2 and XANES TPR-EtOH showed that WO3/TiO2 sample reduction occurs through the formation of these complex clusters. Moreover, the addition of WO3 promoted an increase in the surface acidity of doped samples as revealed by NH3 chemisorption. The WO3/TiO2 bulk-ceramic samples were further used to estimate their potential application in a humidity sensor in the range of 15-85% relative humidity. Probable reasons that lead to the different humidity sensor responses of samples were given based on the structural and surface characterizations. Correlation between the sensing performance of the sensor and its structural features are also discussed. Although all samples responded as a humidity sensor, the W2T sample (2 mol% added WO3) excelled for sensitivity due to the increase in acid sites, optimum mean pore size and pore size distribution.
ÁreaCOMB
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4. Condições de acesso e uso
Idiomaen
Arquivo Alvo1-s2.0-S0925400513009891-main.pdf
Grupo de Usuáriosadministrator
marcelo.pazos@inpe.br
Grupo de Leitoresadministrator
marcelo.pazos@inpe.br
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft24
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhoiconet.com.br/banon/2006/11.26.21.31
Unidades Imediatamente Superiores8JMKD3MGPCW/3ET38CH
Lista de Itens Citandosid.inpe.br/bibdigital/2013/09.25.23.49 4
sid.inpe.br/mtc-m21/2012/07.13.14.51.34 1
URL (dados não confiáveis)http://dx.doi.org/10.1016/j.snb.2013.08.053
DivulgaçãoWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark month nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype
7. Controle da descrição
e-Mail (login)marcelo.pazos@inpe.br
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