Low-Temperature Carbon Dioxide Gas Sensor Based on Yolk-Shell Ceria Nanospheres

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversity of Hamburg-
Autor(es): dc.contributorDeutsches Elektronen-Synchrotron Desy-
Autor(es): dc.creatorZito, Cecilia A. [UNESP]-
Autor(es): dc.creatorPerfecto, Tarcísio M. [UNESP]-
Autor(es): dc.creatorDippel, Ann-Christin-
Autor(es): dc.creatorVolanti, Diogo P. [UNESP]-
Autor(es): dc.creatorKoziej, Dorota-
Data de aceite: dc.date.accessioned2022-02-22T00:25:24Z-
Data de disponibilização: dc.date.available2022-02-22T00:25:24Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-04-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acsami.0c01641-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198735-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198735-
Descrição: dc.descriptionMonitoring carbon dioxide (CO2) levels is extremely important in a wide range of applications. Although metal oxide-based chemoresistive sensors have emerged as a promising approach for CO2 detection, the development of efficient CO2 sensors at low temperature remains a challenge. Herein, we report a low-temperature hollow nanostructured CeO2-based sensor for CO2 detection. We monitor the changes in the electrical resistance after CO2 pulses in a relative humidity of 70% and show the high performance of the sensor at 100 °C. The yolk-shell nanospheres have not only 2 times higher sensitivity but also significantly increased stability and reversibility, faster response times, and greater CO2 adsorption capacity than commercial ceria nanoparticles. The improvements in the CO2 sensing performance are attributed to hollow and porous structure of the yolk-shell nanoparticles, allowing for enhanced gas diffusion and high specific surface area. We present an easy strategy to enhance the electrical and sensing properties of metal oxides at a low operating temperature that is desirable for practical applications of CO2 sensors.-
Descrição: dc.descriptionLaboratory of Materials for Sustainability (LabMatSus) Saõ Paulo State University (UNESP), Rua Cristóvaõ Colombo 2265-
Descrição: dc.descriptionCenter for Hybrid Nanostructures (CHyN) Institute of Nanostructure and Solid State Physics University of Hamburg, Luruper Chaussee 149-
Descrição: dc.descriptionDeutsches Elektronen-Synchrotron Desy, Notkestrasse 85-
Descrição: dc.descriptionLaboratory of Materials for Sustainability (LabMatSus) Saõ Paulo State University (UNESP), Rua Cristóvaõ Colombo 2265-
Formato: dc.format17745-17751-
Idioma: dc.languageen-
Relação: dc.relationACS Applied Materials and Interfaces-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectceria-
Palavras-chave: dc.subjectchemoresistive-
Palavras-chave: dc.subjectCO2 sensing-
Palavras-chave: dc.subjecthollow structure-
Palavras-chave: dc.subjectPDF analysis-
Título: dc.titleLow-Temperature Carbon Dioxide Gas Sensor Based on Yolk-Shell Ceria Nanospheres-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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