Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity
While palladium-based catalysts are effective in low-temperature methane combustion, their high cost and scarcity render them unsuitable to fulfil the growing demand. The design of improved catalysts which can more efficiently utilize this precious metal is required. Here, by using a facile one-pot...
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sg-ntu-dr.10356-1556662022-05-07T20:11:27Z Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity Wang, Ting Qiu, Lishushi Li, Haiyan Zhang, Chao Sun, Yuanmiao Xi, Shibo Ge, Jingjie Xu, Jason Zhichuan Wang, Chuan School of Materials Science and Engineering Nanyang Environment and Water Research Institute Solar Fuels Laboratory Engineering::Materials::Functional materials Engineering::Environmental engineering::Waste management Methane Oxidation Palladium While palladium-based catalysts are effective in low-temperature methane combustion, their high cost and scarcity render them unsuitable to fulfil the growing demand. The design of improved catalysts which can more efficiently utilize this precious metal is required. Here, by using a facile one-pot thermal decomposition method Pd-NiCo2O4 spinel catalysts with a unique structure are obtained, in which the majority of Pd incorporated into the bulk spinel structure of NiCo2O4 with limited highly dispersed PdOx species on the surface at an atomic scale. The robust 1 %Pd-NiCo2O4 spinel catalyst exhibits comparable activity in methane oxidation to that of the conventional incipient wetness impregnation 2 %Pd/NiCo2O4. Theoretical calculations and catalyst characterizations (SEM, HRTEM, XRD, XPS, XAS, ICP-OES, etc.) revealed that the enhanced activity is mainly originated from having the O p-band center closer to the Fermi level, with Pd ions incorporated into the bulk NiCo2O4 via substituting for the octahedral coordinated Ni3+/Co3+. Ministry of Education (MOE) Ministry of National Development (MND) Ministry of the Environment and Water Resources National Environmental Agency (NEA) Submitted/Accepted version This work is supported by Nanjing Tech University Research Start-up Fund [grant number 38274017111]. Financial support from Zhongyan Jilantai Chlor-Alkali Chemical Co., Ltd is acknowledged [grant number FZ2019-RWS-027]. Authors appreciate the support from the National Research Foundation, Prime Minister’s Office, Singapore, the Ministry of National Development, Singapore, and the National Environment Agency, Ministry of the Environment and Water Resource, Singapore, under the Closing the Waste Loop R&D Initiative as part of the Urban Solutions and Sustainability Integration Fund (Award USS-IF-2019-4), Singapore Ministry of Education [Tier 1, Grant number RG3/18(S); Tier 2, Grant number MOE2018-T2-2-027]. 2022-03-11T01:36:52Z 2022-03-11T01:36:52Z 2021 Journal Article Wang, T., Qiu, L., Li, H., Zhang, C., Sun, Y., Xi, S., Ge, J., Xu, J. Z. & Wang, C. (2021). Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity. Journal of Catalysis, 404, 400-410. https://dx.doi.org/10.1016/j.jcat.2021.10.018 0021-9517 https://hdl.handle.net/10356/155666 10.1016/j.jcat.2021.10.018 2-s2.0-85118496137 404 400 410 en USS-IF-2019-4 RG3/18(S) MOE2018-T2-2-027 Journal of Catalysis © 2021 Elsevier Inc. All rights reserved. This paper was published in Journal of Catalysis and is made available with permission of Elsevier Inc. application/pdf |
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Engineering::Materials::Functional materials Engineering::Environmental engineering::Waste management Methane Oxidation Palladium Wang, Ting Qiu, Lishushi Li, Haiyan Zhang, Chao Sun, Yuanmiao Xi, Shibo Ge, Jingjie Xu, Jason Zhichuan Wang, Chuan Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
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While palladium-based catalysts are effective in low-temperature methane combustion, their high cost and scarcity render them unsuitable to fulfil the growing demand. The design of improved catalysts which can more efficiently utilize this precious metal is required. Here, by using a facile one-pot thermal decomposition method Pd-NiCo2O4 spinel catalysts with a unique structure are obtained, in which the majority of Pd incorporated into the bulk spinel structure of NiCo2O4 with limited highly dispersed PdOx species on the surface at an atomic scale. The robust 1 %Pd-NiCo2O4 spinel catalyst exhibits comparable activity in methane oxidation to that of the conventional incipient wetness impregnation 2 %Pd/NiCo2O4. Theoretical calculations and catalyst characterizations (SEM, HRTEM, XRD, XPS, XAS, ICP-OES, etc.) revealed that the enhanced activity is mainly originated from having the O p-band center closer to the Fermi level, with Pd ions incorporated into the bulk NiCo2O4 via substituting for the octahedral coordinated Ni3+/Co3+. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Wang, Ting Qiu, Lishushi Li, Haiyan Zhang, Chao Sun, Yuanmiao Xi, Shibo Ge, Jingjie Xu, Jason Zhichuan Wang, Chuan |
format |
Article |
author |
Wang, Ting Qiu, Lishushi Li, Haiyan Zhang, Chao Sun, Yuanmiao Xi, Shibo Ge, Jingjie Xu, Jason Zhichuan Wang, Chuan |
author_sort |
Wang, Ting |
title |
Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
title_short |
Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
title_full |
Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
title_fullStr |
Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
title_full_unstemmed |
Facile synthesis of palladium incorporated NiCo₂O₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
title_sort |
facile synthesis of palladium incorporated nico₂o₄ spinel for low temperature methane combustion : activate lattice oxygen to promote activity |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/155666 |
_version_ |
1734310136690769920 |