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Lin J, Zhao S, Yang J, Huang WH, Chen CL, Chen T, Zhao Y, Chen G, Qiu Y, Gu L. Hydrogen Spillover Induced PtCo/CoO x Interfaces with Enhanced Catalytic Activity for CO Oxidation at Low Temperatures in Humid Conditions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309181. [PMID: 38100297 DOI: 10.1002/smll.202309181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/24/2023] [Indexed: 12/17/2023]
Abstract
The development of catalysts with abundant active interfaces for superior low-temperature catalytic CO oxidation is critical to meet increasingly rigorous emission requirements, yet still challenging. Herein, this work reports a PtCo/CoOx/Al2O3 catalyst with PtCo clusters and enriched Pt─O─Co interfaces induced by hydrogen spillover from the Pt sites and self-oxidation process in air, exhibiting excellent performance for CO oxidation at low temperatures and humid conditions. The combination of structural characterizations and in situ Fourier transform infrared spectroscopy reveals that the PtCo cluster effectively prevents CO saturation/poisoning on the Pt surface. Additionally, the presence of Pt─O─Co interfaces in the PtCo/CoOx/Al2O3 catalyst provides a significant number of active sites for oxygen activation and ─OH formation. This facilitates efficient generation of CO2 at ambient temperature by coupling with nearby adsorbed CO molecules, resulting in superior low-temperature activity and long-term stability for CO oxidation under humid conditions. This work provides a facile route toward rationalizing the design of catalysts with more active interfaces for superior low-temperature CO oxidation under humid conditions for practical applications.
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Affiliation(s)
- Jiajin Lin
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Shuaiqi Zhao
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Jin Yang
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Wei-Hsiang Huang
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Hsinchu, 30076, Taiwan
| | - Chi-Liang Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Hsinchu, 30076, Taiwan
| | - Tingyu Chen
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Yun Zhao
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Guangxu Chen
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Yongcai Qiu
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510000, China
| | - Lin Gu
- Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Laboratory of Advanced Materials and Electron Microscopy, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
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Padmanaban A, Padmanathan N, Dhanasekaran T, Manigandan R, Srinandhini S, Sivaprakash P, Arumugam S, Narayanan V. Hexagonal phase Pt-doped cobalt telluride magnetic semiconductor nanoflakes for electrochemical sensing of dopamine. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114658] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Louisia S, Thomas YRJ, Lecante P, Heitzmann M, Axet MR, Jacques PA, Serp P. Alloyed Pt 3M (M = Co, Ni) nanoparticles supported on S- and N-doped carbon nanotubes for the oxygen reduction reaction. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:1251-1269. [PMID: 31293863 PMCID: PMC6604734 DOI: 10.3762/bjnano.10.125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
Sulfur- (S-CNT) and nitrogen-doped (N-CNT) carbon nanotubes have been produced by catalytic chemical vapor deposition (c-CVD) and were subject to an annealing treatment. These CNTs were used as supports for small (≈2 nm) Pt3M (M = Co or Ni) alloyed nanoparticles that have a very homogeneous size distribution (in spite of the high metal loading of ≈40 wt % Pt), using an ionic liquid as a stabilizer. The electrochemical surface area, the activity for the oxygen reduction reaction and the amount of H2O2 generated during the oxygen reduction reaction (ORR) have been evaluated in a rotating ring disk electrode experiment. The Pt3M/N-CNT catalysts revealed excellent electrochemical properties compared to a commercial Pt3Co/Vulcan XC-72 catalyst. The nature of the carbon support plays a key role in determining the properties of the metal nanoparticles, on the preparation of the catalytic layer, and on the electrocatalytic performance in the ORR. On N-CNT supports, the specific activity followed the expected order Pt3Co > Pt3Ni, whereas on the annealed N-CNT support, the order was reversed.
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Affiliation(s)
- Stéphane Louisia
- LCC-CNRS, Université de Toulouse, CNRS, INPT, Toulouse, France
- Université Grenoble Alpes, CEA-LITEN/DEHT, 17 rue des martyrs 38000 Grenoble, France
| | - Yohann R J Thomas
- Université Grenoble Alpes, CEA-LITEN/DEHT, 17 rue des martyrs 38000 Grenoble, France
| | - Pierre Lecante
- CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex 4, France
| | - Marie Heitzmann
- Université Grenoble Alpes, CEA-LITEN/DEHT, 17 rue des martyrs 38000 Grenoble, France
| | - M Rosa Axet
- LCC-CNRS, Université de Toulouse, CNRS, INPT, Toulouse, France
| | - Pierre-André Jacques
- Université Grenoble Alpes, CEA-LITEN/DEHT, 17 rue des martyrs 38000 Grenoble, France
| | - Philippe Serp
- LCC-CNRS, Université de Toulouse, CNRS, INPT, Toulouse, France
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