Effect of core and surface area toward hydrogen gas sensing performance using Pd@ZnO core-shell nanoparticles
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nguyen, Thuy T. D. | - |
dc.contributor.author | Van Dao, Dung | - |
dc.contributor.author | Kim, Dong-Seog | - |
dc.contributor.author | Lee, Hu-Jun | - |
dc.contributor.author | Oh, Sang-Yeob | - |
dc.contributor.author | Lee, In-Hwan | - |
dc.contributor.author | Yu, Yeon-Tae | - |
dc.date.accessioned | 2021-11-22T14:40:40Z | - |
dc.date.available | 2021-11-22T14:40:40Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-04 | - |
dc.identifier.issn | 0021-9797 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128365 | - |
dc.description.abstract | A versatile hydrogen gas sensor is fabricated using Pd@ZnO core-shell nanoparticles (CSNPs), which were synthesized through a hydrothermal route. Effect of oxidation behavior of Pd core to hydrogen sensing is also investigated for Pd@ZnO CSNPs. Accordingly, Pd@ZnO-2 sensor (core-shell sample was calcined in argon) demonstrates the best performance with respect to Pd@ZnO-1 (core-shell sample was calcined in air) and pure ZnO. It shows a much higher response (R = R-a/R-g = 22) than those of Pd@ZnO-1 (12) and pure ZnO (7) sensors with faster response and recovery times (1.4 and 7.8 min) to 100 ppm hydrogen at 350 degrees C. In addition, Pd@ZnO-2 sensor owns high selectivity to hydrogen among interfering target gases. Improvement can be attributed to the high content of metallic Pd-0 species in CSNPs as calcined in argon. Thereby, a higher Pd metallic content (77%) still remains in Pd@ZnO-2 compared to Pd@ZnO-1 (56%), which in turn modulates the resistance of sensors as exposed to air and target gas, thus enhancing gas sensing activity. High BET surface area of core-shell materials provides plenty of active sites for accelerating the sensing reactions as well. (c) 2020 Elsevier Inc. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.title | Effect of core and surface area toward hydrogen gas sensing performance using Pd@ZnO core-shell nanoparticles | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, In-Hwan | - |
dc.identifier.doi | 10.1016/j.jcis.2020.12.017 | - |
dc.identifier.scopusid | 2-s2.0-85098888024 | - |
dc.identifier.wosid | 000615743900008 | - |
dc.identifier.bibliographicCitation | JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.587, pp.252 - 259 | - |
dc.relation.isPartOf | JOURNAL OF COLLOID AND INTERFACE SCIENCE | - |
dc.citation.title | JOURNAL OF COLLOID AND INTERFACE SCIENCE | - |
dc.citation.volume | 587 | - |
dc.citation.startPage | 252 | - |
dc.citation.endPage | 259 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.subject.keywordAuthor | Palladium | - |
dc.subject.keywordAuthor | Zinc oxide | - |
dc.subject.keywordAuthor | Core-shell | - |
dc.subject.keywordAuthor | Hydrogen sensing | - |
dc.subject.keywordAuthor | Surface area | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.