1
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Salichon A, Salcedo A, Michel C, Loffreda D. Theoretical study of structure sensitivity on ceria-supported single platinum atoms and its influence on carbon monoxide adsorption. J Comput Chem 2024; 45:2167-2179. [PMID: 38795373 DOI: 10.1002/jcc.27393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/27/2024] [Accepted: 04/29/2024] [Indexed: 05/27/2024]
Abstract
Density functional theory (DFT) calculations explore the stability of a single platinum atom on various flat, stepped, and defective ceria surfaces, in the context of single-atom catalysts (SACs) for the water-gas shift (WGS) reaction. The adsorption properties and diffusion kinetics of the metal strongly depend on the support termination with large stability on metastable and stepped CeO2(100) and (210) surfaces where the diffusion of the platinum atom is hindered. At the opposite, the more stable CeO2(111) and (110) terminations weakly bind the platinum atom and can promote the growth of metallic clusters thanks to fast diffusion kinetics. The adsorption of carbon monoxide on the single platinum atom supported on the various ceria terminations is also sensitive to the surface structure. Carbon monoxide weakly binds to the single platinum atom supported on reduced CeO2(111) and (211) terminations. The desorption of the CO2 formed during the WGS reaction is thus facilitated on the latter terminations. A vibrational analysis underlines the significant changes in the calculated scaled anharmonic CO stretching frequency on these catalysts.
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Affiliation(s)
| | - Agustin Salcedo
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, Lyon Cedex, France
| | - Carine Michel
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, Lyon Cedex, France
| | - David Loffreda
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, Lyon Cedex, France
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2
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Zhang Q, Liu Z, Li B, Mu L, Sheng K, Xiong Y, Cheng J, Zhou J, Xiong Z, Zhou L, Jiang L, Wu J, Cai X, Zheng Y, Du W, Li Y, Zhu Y. Platinum-Loaded Cerium Oxide Capable of Repairing Neuronal Homeostasis for Cerebral Ischemia-Reperfusion Injury Therapy. Adv Healthc Mater 2024; 13:e2303027. [PMID: 38323853 DOI: 10.1002/adhm.202303027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/12/2024] [Indexed: 02/08/2024]
Abstract
Effective neuroprotective agents are required to prevent neurological damage caused by reactive oxygen species (ROS) generated by cerebral ischemia-reperfusion injury (CIRI) following an acute ischemic stroke. Herein, it is aimed to develop the neuroprotective agents of cerium oxide loaded with platinum clusters engineered modifications (Ptn-CeO2). The density functional theory calculations show that Ptn-CeO2 could effectively scavenge ROS, including hydroxyl radicals (·OH) and superoxide anions (·O2 -). In addition, Ptn-CeO2 exhibits the superoxide dismutase- and catalase-like enzyme activities, which is capable of scavenging hydrogen peroxide (H2O2). The in vitro studies show that Ptn-CeO2 could adjust the restoration of the mitochondrial metabolism to ROS homeostasis, rebalance cytokines, and feature high biocompatibility. The studies in mice CIRI demonstrate that Ptn-CeO2 could also restore cytokine levels, reduce cysteine aspartate-specific protease (cleaved Caspase 3) levels, and induce the polarization of microglia to M2-type macrophages, thus inhibiting the inflammatory responses. As a result, Ptn-CeO2 inhibits the reperfusion-induced neuronal apoptosis, relieves the infarct volume, reduces the neurological severity score, and improves cognitive function. Overall, these findings suggest that the prominent neuroprotective effect of the engineered Ptn-CeO2 has a significant neuroprotective effect and provides a potential therapeutic alternative for CIRI.
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Affiliation(s)
- Qiang Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zihao Liu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Bo Li
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Liuhua Mu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
- School of Physical Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kai Sheng
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yijia Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jiahui Cheng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Jia Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zhi Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lingling Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lixian Jiang
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jianrong Wu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Xiaojun Cai
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Wenxian Du
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yueqi Zhu
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
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3
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Bunjaku O, Florenski J, Wischnat J, Klemm E, Safonova OV, van Slageren J, Estes DP. Understanding the Reducibility of CeO 2 Surfaces by Proton-Electron Transfer from CpCr(CO) 3H. Inorg Chem 2024; 63:7512-7519. [PMID: 38598679 DOI: 10.1021/acs.inorgchem.4c01199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
CeO2 is a popular material in heterogeneous catalysis, molecular sensors, and electronics and owes many of its special properties to the redox activity of Ce, present as both Ce3+ and Ce4+. However, the reduction of CeO2 with H2 (thought to occur through proton-electron transfer (PET) giving Ce3+ and new OH bonds) is poorly understood due to the high reduction temperatures necessary and the ill-defined nature of the hydrogen atom sources typically used. We have previously shown that transition-metal hydrides with weak M-H bonds react with reducible metal oxides at room temperature by PET. Here, we show that CpCr(CO)3H (1) transfers protons and electrons to CeO2 due to its weak Cr-H bond. We can titrate CeO2 with 1 and measure not only the number of surface Ce3+ sites formed (in agreement with X-ray absorption spectroscopy) but also the lower limit of the hydrogen atom adsorption free energy (HAFE). The results match the extent of reduction achieved from H2 treatment and hydrogen spillover on CeO2 in a wide range of applications.
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Affiliation(s)
- Osman Bunjaku
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
| | - Jan Florenski
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
| | - Jonathan Wischnat
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
| | - Elias Klemm
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
| | - Olga V Safonova
- Paul Scherrer Institut, Forschungsstrasse 111, CH-5232 Villigen, Switzerland
| | - Joris van Slageren
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
| | - Deven P Estes
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, DE-70569 Stuttgart, Germany
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4
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Castro-Latorre P, Neyman KM, Bruix A. Systematic Characterization of Electronic Metal-Support Interactions in Ceria-Supported Pt Particles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:17700-17710. [PMID: 37736294 PMCID: PMC10510437 DOI: 10.1021/acs.jpcc.3c03383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/31/2023] [Indexed: 09/23/2023]
Abstract
Electronic metal-support interactions affect the chemical and catalytic properties of metal particles supported on reducible metal oxides, but their characterization is challenging due to the complexity of the electronic structure of these systems. These interactions often involve different states with varying numbers and positions of strongly correlated d or f electrons and the corresponding polarons. In this work, we present an approach to characterize electronic metal-support interactions by means of computationally efficient density functional calculations within the projector augmented wave method. We describe Ce3+ cations with potentials that include a Ce4f electron in the frozen core, overcoming prevalent convergence and 4f electron localization issues. We systematically explore the stability and chemical properties of different electronic states for a Pt8/CeO2(111) model system, revealing the predominant effect of electronic metal-support interactions on Pt atoms located directly at the metal-oxide interface. Adsorption energies and the reactivity of these interface Pt atoms vary significantly upon donation of electrons to the oxide support, pointing to a strategy to selectively activate interfacial sites of metal particles supported on reducible metal oxides.
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Affiliation(s)
- Pablo Castro-Latorre
- Departament
de Ciència de Materials i Química Física, Institut de Quimica Teòrica i Computacional
(IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Konstantin M. Neyman
- Departament
de Ciència de Materials i Química Física, Institut de Quimica Teòrica i Computacional
(IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
- ICREA
(Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
| | - Albert Bruix
- Departament
de Ciència de Materials i Química Física, Institut de Quimica Teòrica i Computacional
(IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
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5
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Stangl A, Pla D, Pirovano C, Chaix-Pluchery O, Baiutti F, Chiabrera F, Tarancón A, Jiménez C, Mermoux M, Burriel M. Isotope Exchange Raman Spectroscopy (IERS): A Novel Technique to Probe Physicochemical Processes In Situ. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303259. [PMID: 37269138 DOI: 10.1002/adma.202303259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/17/2023] [Indexed: 06/04/2023]
Abstract
A novel in situ methodology for the direct study of mass-transport properties in oxides with spatial and unprecedented time resolution, based on Raman spectroscopy coupled to isothermal isotope exchanges, is developed. Changes in the isotope concentration, resulting in a Raman frequency shift, can be followed in real time, which is not accessible by conventional methods, enabling complementary insights for the study of ion-transport properties of electrode and electrolyte materials for advanced solid-state electrochemical devices. The proof of concept and strengths of isotope exchange Raman spectroscopy (IERS) is demonstrated by studying the oxygen isotope back-exchange in gadolinium-doped ceria (CGO) thin films. Resulting oxygen self-diffusion and surface exchange coefficients are compared to conventional time-of-flight secondary-ion mass spectrometry (ToF-SIMS) characterization and literature values, showing good agreement, while at the same time providing additional insight, challenging established assumptions. IERS captivates through its rapidity, simple setup, non-destructive nature, cost effectiveness, and versatile fields of application and thus can readily be integrated as new standard tool for in situ and operando characterization in many laboratories worldwide. The applicability of this method is expected to consolidate the understanding of elementary physicochemical processes and impact various emerging fields including solid oxide cells, battery research, and beyond.
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Affiliation(s)
- Alexander Stangl
- Univ. Grenoble Alpes, CNRS, Grenoble-INP, LMGP, Grenoble, 38000, France
| | - Dolors Pla
- Univ. Grenoble Alpes, CNRS, Grenoble-INP, LMGP, Grenoble, 38000, France
| | - Caroline Pirovano
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, Lille, F-59000, France
| | | | - Federico Baiutti
- Catalonia Institute for Energy Research (IREC), Barcelona, 08930, Spain
- Departement of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, Ljubljana, SI-1000, Slovenia
| | | | - Albert Tarancón
- Catalonia Institute for Energy Research (IREC), Barcelona, 08930, Spain
- ICREA, 23 Passeig Lluis Companys, Barcelona, 08010, Spain
| | - Carmen Jiménez
- Univ. Grenoble Alpes, CNRS, Grenoble-INP, LMGP, Grenoble, 38000, France
| | - Michel Mermoux
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, Grenoble, 38000, France
| | - Mónica Burriel
- Univ. Grenoble Alpes, CNRS, Grenoble-INP, LMGP, Grenoble, 38000, France
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6
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Influence of the metal − support and metal − metal interactions on Pd nucleation and NO adsorption in a Pd4/γ-Al2O3 (110D) model. J Mol Model 2022; 28:394. [DOI: 10.1007/s00894-022-05374-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/01/2022] [Indexed: 11/22/2022]
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7
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Bezkrovnyi O, Bruix A, Blaumeiser D, Piliai L, Schötz S, Bauer T, Khalakhan I, Skála T, Matvija P, Kraszkiewicz P, Pawlyta M, Vorokhta M, Matolínová I, Libuda J, Neyman KM, Kȩpiński L. Metal-Support Interaction and Charge Distribution in Ceria-Supported Au Particles Exposed to CO. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:7916-7936. [PMID: 36117879 PMCID: PMC9476549 DOI: 10.1021/acs.chemmater.2c01659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Understanding how reaction conditions affect metal-support interactions in catalytic materials is one of the most challenging tasks in heterogeneous catalysis research. Metal nanoparticles and their supports often undergo changes in structure and oxidation state when exposed to reactants, hindering a straightforward understanding of the structure-activity relations using only ex situ or ultrahigh vacuum techniques. Overcoming these limitations, we explored the metal-support interaction between gold nanoparticles and ceria supports in ultrahigh vacuum and after exposure to CO. A combination of in situ methods (on powder and model Au/CeO2 samples) and theoretical calculations was applied to investigate the gold/ceria interface and its reactivity toward CO exposure. X-ray photoelectron spectroscopy measurements rationalized by first-principles calculations reveal a distinctly inhomogeneous charge distribution, with Au+ atoms in contact with the ceria substrate and neutral Au0 atoms at the surface of the Au nanoparticles. Exposure to CO partially reduces the ceria substrate, leading to electron transfer to the supported Au nanoparticles. Transferred electrons can delocalize among the neutral Au atoms of the particle or contribute to forming inert Auδ- atoms near oxygen vacancies at the ceria surface. This charge redistribution is consistent with the evolution of the vibrational frequencies of CO adsorbed on Au particles obtained using diffuse reflectance infrared Fourier transform spectroscopy.
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Affiliation(s)
- Oleksii Bezkrovnyi
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Albert Bruix
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Dominik Blaumeiser
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Lesia Piliai
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Simon Schötz
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Tanja Bauer
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Ivan Khalakhan
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Tomáš Skála
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Peter Matvija
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Piotr Kraszkiewicz
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Mirosława Pawlyta
- Materials
Research Laboratory, Silesian University
of Technology, Gliwice 44-100, Poland
| | - Mykhailo Vorokhta
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Iva Matolínová
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Jörg Libuda
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Konstantin M. Neyman
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
- ICREA
(Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
| | - Leszek Kȩpiński
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
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8
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Jeong ES, Hwang IH, Han SW. Dispersion and stability mechanism of Pt nanoparticles on transition-metal oxides. Sci Rep 2022; 12:13652. [PMID: 35953693 PMCID: PMC9372059 DOI: 10.1038/s41598-022-17638-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 07/28/2022] [Indexed: 11/09/2022] Open
Abstract
The heterogeneous catalysts of Pt/transition-metal oxides are typically synthesized through calcination at 500 °C, and Pt nanoparticles are uniformly and highly dispersed when hydrogen peroxide (H2O2) is applied before calcination. The influence of H2O2 on the dispersion and the stability of Pt nanoparticles on titania-incorporated fumed silica (Pt/Ti-FS) supports was examined using X-ray absorption fine structure (XAFS) measurements at the Pt L3 and Ti K edges as well as density functional theory (DFT) calculations. The local structural and chemical properties around Pt and Ti atoms of Pt/Ti-FS with and without H2O2 treatment were monitored using in-situ XAFS during heating from room temperature to 500 °C. XAFS revealed that the Pt nanoparticles of H2O2-Pt/Ti-FS are highly stable and that the Ti atoms of H2O2-Pt/Ti-FS support form into a distorted-anatase TiO2. DFT calculations showed that Pt atoms bond more stably to oxidized-TiO2 surfaces than they do to bare- and reduced-TiO2 surfaces. XAFS measurements and DFT calculations clarified that the presence of extra oxygen atoms due to the H2O2 treatment plays a critical role in the strong bonding of Pt atoms to TiO2 surfaces.
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Affiliation(s)
- Eun-Suk Jeong
- Department of Physics Education and Institute of Fusion Science, Jeonbuk National University, Jeonju, 54896, Korea
| | - In-Hui Hwang
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Sang-Wook Han
- Department of Physics Education and Institute of Fusion Science, Jeonbuk National University, Jeonju, 54896, Korea.
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9
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Quinlivan Domínguez JE, Neyman KM, Bruix A. Stability of oxidized states of free-standing and ceria-supported PtO x particles. J Chem Phys 2022; 157:094709. [DOI: 10.1063/5.0099927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nanostructured materials based on CeO2 and Pt play a fundamental role in catalyst design. However, their characterization is often challenging due to their structural complexity and the tendency of the materials to change under reaction conditions. In this work, we combine calculations based on the density functional theory, a machine-learning assisted global optimization method (GOFEE), and ab initio thermodynamics to characterize stable oxidation states of ceria-supported PtyOx particles in different environments. The collection of global minima structures for different stoichiometries resulting from the global optimisation effort is used to assess the effect of temperature, oxygen pressure, and support interactions on the phase diagrams, oxidation states, and geometries of the PtyOx particles. We thus identify favoured structural motifs and O:Pt ratios, revealing that oxidized states of free-standing and ceria-supported platinum particles are more stable than reduced ones under a wide range of conditions. These results indicate that studies rationalizing activity of ceria-supported Pt clusters must consider oxidized states, and that previous understanding of such materials obtained only with fully reduced Pt clusters may be incomplete.
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Affiliation(s)
| | - Konstantin M. Neyman
- Departament de Quimica Fisica, Universitat de Barcelona Departament de Química-Física, Spain
| | - Albert Bruix
- Universitat de Barcelona Departament de Química-Física, Spain
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10
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Methanol Oxidation Catalytic Performance Enhancement via Constructing Pd-MgAl2O4 Interface and its Reaction Mechanism Investigation. Catal Letters 2022. [DOI: 10.1007/s10562-022-04107-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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11
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Shin D, Huang R, Jang MG, Choung S, Kim Y, Sung K, Kim TY, Han JW. Role of an Interface for Hydrogen Production Reaction over Size-Controlled Supported Metal Catalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dongjae Shin
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Rui Huang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Myeong Gon Jang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Seokhyun Choung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Youngbi Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Kiheon Sung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Tae Yong Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jeong Woo Han
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
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12
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Di M, Simmance K, Schaefer A, Feng Y, Hemmingsson F, Skoglundh M, Bell T, Thompsett D, Ajakaiye Jensen LI, Blomberg S, Carlsson PA. Chasing PtO species in ceria supported platinum during CO oxidation extinction with correlative operando spectroscopic techniques. J Catal 2022. [DOI: 10.1016/j.jcat.2022.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Guo Y, Zhu H, Zhao H, Zhao Q, Zhou C, Suo B, Zou W, Jiang Z, Li Y. A theoretical study of the electrochemical reduction of CO 2 on cerium dioxide supported palladium single atoms and nanoparticles. Phys Chem Chem Phys 2021; 23:26185-26194. [PMID: 34812826 DOI: 10.1039/d1cp03835d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd/CeO2 catalysts show superior catalytic performance owing to their optimal cycling activity and stability. In this study, single-atom Pd and eight-atom Pd nanoparticle clusters were supported on the surface of CeO2(110) to investigate the effect of loaded-metal size on the catalytic performance of the Pd-CeO2 system for CO2 reduction. We investigated the CO2 reduction reaction (CRR) that produces C1 products (CO, HCOOH, CH3OH, and CH4) on Pd8/CeO2 and Pd/CeO2 by density functional theory. The structures, CO2 adsorption configurations, and CO2 reduction mechanisms of these two electrocatalysts were systematically studied. Subsequently, different reduction pathways on Pd8/CeO2 and Pd/CeO2 were investigated to identify the optimal reaction pathway for further assessment. The results showed that both of these catalysts are more selective towards the production of CH3OH than CH4. Moreover, compared to Pd/CeO2 and Pd4/CeO2 (from a previously reported study) the production of CH3OH via the CRR on Pd8/CeO2 exhibited the lowest limiting potential. These results demonstrate the superiority of Pd8/CeO2 as an electrocatalyst for the electrochemical reduction of CO2 to CH3OH.
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Affiliation(s)
- Yannv Guo
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Haiyan Zhu
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - He Zhao
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Qinfu Zhao
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Caihua Zhou
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, Shaanxi 712000, China
| | - Bingbing Suo
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Wenli Zou
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Zhenyi Jiang
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Yawei Li
- Shaanxi Key Laboratory for Theoretical Physics Frontiers, Institute of Modern Physics, Northwest University, Xi'an, Shaanxi 710069, China.
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14
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Nasluzov VA, Ivanova-Shor EA, Shor AM, Laletina SS, Neyman KM. Adsorption and Oxidation of CO on Ceria Nanoparticles Exposing Single-Atom Pd and Ag: A DFT Modelling. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6888. [PMID: 34832290 PMCID: PMC8618484 DOI: 10.3390/ma14226888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/07/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022]
Abstract
Various COx species formed upon the adsorption and oxidation of CO on palladium and silver single atoms supported on a model ceria nanoparticle (NP) have been studied using density functional calculations. For both metals M, the ceria-supported MCOx moieties are found to be stabilised in the order MCO < MCO2 < MCO3, similar to the trend for COx species adsorbed on M-free ceria NP. Nevertheless, the characteristics of the palladium and silver intermediates are different. Very weak CO adsorption and the small exothermicity of the CO to CO2 transformation are found for O4Pd site of the Pd/Ce21O42 model featuring a square-planar coordination of the Pd2+ cation. The removal of one O atom and formation of the O3Pd site resulted in a notable strengthening of CO adsorption and increased the exothermicity of the CO to CO2 reaction. For the analogous ceria models with atomic Ag instead of atomic Pd, these two energies became twice as small in magnitude and basically independent of the presence of an O vacancy near the Ag atom. CO2-species are strongly bound in palladium carboxylate complexes, whereas the CO2 molecule easily desorbs from oxide-supported AgCO2 moieties. Opposite to metal-free ceria particle, the formation of neither PdCO3 nor AgCO3 carbonate intermediates before CO2 desorption is predicted. Overall, CO oxidation is concluded to be more favourable at Ag centres atomically dispersed on ceria nanostructures than at the corresponding Pd centres. Calculated vibrational fingerprints of surface COx moieties allow us to distinguish between CO adsorption on bare ceria NP (blue frequency shifts) and ceria-supported metal atoms (red frequency shifts). However, discrimination between the CO2 and CO32- species anchored to M-containing and bare ceria particles based solely on vibrational spectroscopy seems problematic. This computational modelling study provides guidance for the knowledge-driven design of more efficient ceria-based single-atom catalysts for the environmentally important CO oxidation reaction.
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Affiliation(s)
- Vladimir A. Nasluzov
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia; (V.A.N.); (A.M.S.); (S.S.L.)
| | - Elena A. Ivanova-Shor
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia; (V.A.N.); (A.M.S.); (S.S.L.)
| | - Aleksey M. Shor
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia; (V.A.N.); (A.M.S.); (S.S.L.)
| | - Svetlana S. Laletina
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia; (V.A.N.); (A.M.S.); (S.S.L.)
| | - Konstantin M. Neyman
- Departament de Ciència de Materials i Química Física and Institut de Quimica Teòrica i Computacional, Universitat de Barcelona, 08028 Barcelona, Spain;
- ICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
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15
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Li C, Nakagawa Y, Yabushita M, Nakayama A, Tomishige K. Guaiacol Hydrodeoxygenation over Iron–Ceria Catalysts with Platinum Single-Atom Alloy Clusters as a Promoter. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03539] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Congcong Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
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16
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Hussain I, Jalil AA, Hamid MYS, Hassan NS. Recent advances in catalytic systems in the prism of physicochemical properties to remediate toxic CO pollutants: A state-of-the-art review. CHEMOSPHERE 2021; 277:130285. [PMID: 33794437 DOI: 10.1016/j.chemosphere.2021.130285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Carbon monoxide (CO) is the most harmful pollutant in the air, causing environmental issues and adversely affecting humans and the vegetation and then raises global warming indirectly. CO oxidation is one of the most effective methods of reducing CO by converting it into carbon dioxide (CO2) using a suitable catalytic system, due to its simplicity and great value for pollution control. The CO oxidation reaction has been widely studied in various applications, including proton-exchange membrane fuel cell technology and catalytic converters. CO oxidation has also been of great academic interest over the last few decades as a model reaction. Many review studies have been produced on catalysts development for CO oxidation, emphasizing noble metal catalysts, the configuration of catalysts, process parameter influence, and the deactivation of catalysts. Nevertheless, there is still some gap in a state of the art knowledge devoted exclusively to synergistic interactions between catalytic activity and physicochemical properties. In an effort to fill this gap, this analysis updates and clarifies innovations for various latest developed catalytic CO oxidation systems with contemporary evaluation and the synergistic relationship between oxygen vacancies, strong metal-support interaction, particle size, metal dispersion, chemical composition acidity/basicity, reducibility, porosity, and surface area. This review study is useful for environmentalists, scientists, and experts working on mitigating the harmful effects of CO on both academic and commercial levels in the research and development sectors.
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Affiliation(s)
- I Hussain
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia.
| | - M Y S Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia
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17
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Photocatalytic Activity of Cellulose Acetate Nanoceria/Pt Hybrid Mats Driven by Visible Light Irradiation. Polymers (Basel) 2021; 13:polym13060912. [PMID: 33809649 PMCID: PMC8002269 DOI: 10.3390/polym13060912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/27/2022] Open
Abstract
A photocatalytic system for the degradation of aqueous organic pollutants under visible light irradiation is obtained by an innovative approach based on ceria/platinum (Pt) hybrid nanoclusters on cellulose acetate fibrous membranes. The catalytic materials are fabricated by supersonic beam deposition of Pt nanoclusters directly on the surface of electrospun cellulose acetate fibrous mats, pre-loaded with a cerium salt precursor that is transformed into ceria nanoparticles directly in the solid mats by a simple thermal treatment. The presence of Pt enhances the oxygen vacancies on the surface of the formed ceria nanoparticles and reduces their band gap, resulting in a significant improvement of the photocatalytic performance of the composite mats under visible light irradiation. Upon the appropriate pretreatment and visible light irradiation, we prove that the most efficient mats, with both ceria nanoparticles and Pt nanoclusters, present a degradation efficiency of methylene blue of 70% and a photodegradation rate improved by about five times compared to the ceria loaded samples, without Pt. The present results bring a significant improvement of the photocatalytic performance of polymeric nanocomposite fibrous systems under visible light irradiation, for efficient wastewater treatment applications.
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18
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Borges LR, Silva AGM, Braga AH, Rossi LM, Suller Garcia MA, Vidinha P. Towards the Effect of Pt
0
/Pt
δ+
and Ce
3+
Species at the Surface of CeO
2
Crystals: Understanding the Nature of the Interactions under CO Oxidation Conditions. ChemCatChem 2021. [DOI: 10.1002/cctc.202001621] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Laís Reis Borges
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000, SP Brasil
| | - Anderson Gabriel Marques Silva
- Departamento de Engenharia Química e de Materiais Pontifícia Universidade Católica R. Marquês de São Vicente 225 22451-900 Rio de Janeiro Brasil
| | - Adriano Henrique Braga
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000, SP Brasil
| | - Liane Marcia Rossi
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000, SP Brasil
| | - Marco Aurélio Suller Garcia
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000, SP Brasil
- Departamento de Química Universidade Federal do Maranhão Avenida dos Portugueses 1966 65080-805, MA Sao Luis Brasil
| | - Pedro Vidinha
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000, SP Brasil
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19
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Song B, Choi D, Xin Y, Bowers CR, Hagelin‐Weaver H. Ultra‐Low Loading Pt/CeO
2
Catalysts: Ceria Facet Effect Affords Improved Pairwise Selectivity for Parahydrogen Enhanced NMR Spectroscopy. Angew Chem Int Ed Engl 2020; 60:4038-4042. [DOI: 10.1002/anie.202012469] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Bochuan Song
- Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Diana Choi
- Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Yan Xin
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32310 USA
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20
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Song B, Choi D, Xin Y, Bowers CR, Hagelin‐Weaver H. Ultra‐Low Loading Pt/CeO
2
Catalysts: Ceria Facet Effect Affords Improved Pairwise Selectivity for Parahydrogen Enhanced NMR Spectroscopy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bochuan Song
- Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Diana Choi
- Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Yan Xin
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32310 USA
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21
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Koleva IZ, Aleksandrov HA, Vayssilov GN. Influence of the adsorption of CO on the electronic structure of platinum clusters and nanowires deposited on CeO2(111) and γ-Al2O3(001) surfaces. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.07.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Yang J, Peng M, Ren G, Qi H, Zhou X, Xu J, Deng F, Chen Z, Zhang J, Liu K, Pan X, Liu W, Su Y, Li W, Qiao B, Ma D, Zhang T. A Hydrothermally Stable Irreducible Oxide-Modified Pd/MgAl 2 O 4 Catalyst for Methane Combustion. Angew Chem Int Ed Engl 2020; 59:18522-18526. [PMID: 32656990 DOI: 10.1002/anie.202009050] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Indexed: 11/07/2022]
Abstract
Catalytic combustion is promising in removing trace amounts of CH4 to address serious environmental concerns. Supported Pd-based catalysts are most effective but often suffer from low stability in applications owing to the water-vapor-induced sintering. Herein, we develop a universal strategy to prepare irreducible-oxide-modified Pd/MgAl2 O4 catalysts which show high activity and excellent stability against both hydrothemal aging at elevated temperatures and deactivation in long-term reaction under wet conditions. The addition of irreducible oxides inhibited the deep oxidation of Pd in the oxygen-rich conditions, which preserved not only the epitaxial structure but also a suitable active phase of Pd-PdOx on MgAl2 O4 , thus promoting both activity and stability. This work provides new insights into the effect of metal-oxide interaction on CH4 combustion and offers an avenue to design hydrothermally stable and active combustion catalysts for industrial applications.
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Affiliation(s)
- Jingyi Yang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mi Peng
- National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and BIC-ESAT, Peking University, Beijing, 100871, China
| | - Guoqing Ren
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Haifeng Qi
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xue Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Jun Xu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Feng Deng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Zhiqiang Chen
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jingcai Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Kaipeng Liu
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoli Pan
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Wei Liu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yang Su
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Weizhen Li
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Botao Qiao
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Ding Ma
- National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and BIC-ESAT, Peking University, Beijing, 100871, China
| | - Tao Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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23
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Yang J, Peng M, Ren G, Qi H, Zhou X, Xu J, Deng F, Chen Z, Zhang J, Liu K, Pan X, Liu W, Su Y, Li W, Qiao B, Ma D, Zhang T. A Hydrothermally Stable Irreducible Oxide‐Modified Pd/MgAl
2
O
4
Catalyst for Methane Combustion. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jingyi Yang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Mi Peng
- National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering and BIC-ESAT Peking University Beijing 100871 China
| | - Guoqing Ren
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Haifeng Qi
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xue Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 China
| | - Jun Xu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 China
| | - Feng Deng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 China
| | - Zhiqiang Chen
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Jingcai Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Kaipeng Liu
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiaoli Pan
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Wei Liu
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Yang Su
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Weizhen Li
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Botao Qiao
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Ding Ma
- National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering and BIC-ESAT Peking University Beijing 100871 China
| | - Tao Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
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24
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Paz-Borbón LO, Buendía F, Garzón IL, Posada-Amarillas A, Illas F, Li J. CeO 2(111) electronic reducibility tuned by ultra-small supported bimetallic Pt-Cu clusters. Phys Chem Chem Phys 2019; 21:15286-15296. [PMID: 31090767 DOI: 10.1039/c9cp01772k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Controlling Ce4+ to Ce3+ electronic reducibility in a rare-earth binary oxide such as CeO2 has enormous applications in heterogeneous catalysis, where a profound understanding of reactivity and selectivity at the atomic level is yet to be reached. Thus, in this work we report an extensive DFT-based Basin Hopping global optimization study to find the most stable bimetallic Pt-Cu clusters supported on the CeO2(111) oxide surface, involving up to 5 atoms in size for all compositions. Our PBE+U global optimization calculations indicate a preference for Pt-Cu clusters to adopt 2D planar geometries parallel to the oxide surface, due to the formation of strong metal bonds to oxygen surface sites and charge transfer effects. The calculated adsorption energy values (Eads) for both mono- and bimetallic systems are of the order of 1.79 up to 4.07 eV, implying a strong metal cluster interaction with the oxide surface. Our calculations indicate that at such sub-nanometer sizes, the number of Ce4+ surface atoms reduced to Ce3+ cations is mediated by the amount of Cu atoms within the cluster, reaching a maximum of three Ce3+ for a supported Cu5 cluster. Our computational results have critical implications on the continuous understanding of the strong metal-support interactions over reducible oxides such as CeO2, as well as the advancement of frontier research areas such as heterogeneous single-atom catalysts (SAC) and single-cluster catalysts (SCC).
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Affiliation(s)
- Lauro Oliver Paz-Borbón
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Fernando Buendía
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Ignacio L Garzón
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Alvaro Posada-Amarillas
- Departamento de Investigación en Física, Universidad de Sonora, Blvd. Luis Encinas & Rosales, 83000 Hermosillo, Sonora, Mexico
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Quιmica Teòrica i Computacional (IQTCUB), de la Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jun Li
- Department of Chemistry, Tsinghua University, Haidian District, Beijing 100084, China and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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25
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Labbé F, Asset T, Chatenet M, Ahmad Y, Guérin K, Metkemeijer R, Berthon-Fabry S. Activity and Durability of Platinum-Based Electrocatalysts with Tin Oxide–Coated Carbon Aerogel Materials as Catalyst Supports. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-018-0505-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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26
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CO Oxidation Promoted by a Pt4/TiO2 Catalyst: Role of Lattice Oxygen at the Metal/Oxide Interface. Catal Letters 2018. [DOI: 10.1007/s10562-018-2610-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Huang Y, Babu DD, Wu M, Wang Y. Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes. ChemCatChem 2018. [DOI: 10.1002/cctc.201801094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yiyin Huang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002 P.R. China
| | - Dickson D. Babu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002 P.R. China
| | - Maoxiang Wu
- Key Laboratory of Optoelectronic Materials Chemistry; Physics Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences; Fuzhou 350002 P.R. China
| | - Yaobing Wang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002 P.R. China
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28
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Ro I, Resasco J, Christopher P. Approaches for Understanding and Controlling Interfacial Effects in Oxide-Supported Metal Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02071] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Insoo Ro
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
| | - Joaquin Resasco
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
| | - Phillip Christopher
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
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29
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Metal Clusters Dispersed on Oxide Supports: Preparation Methods and Metal-Support Interactions. Top Catal 2018. [DOI: 10.1007/s11244-018-0957-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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30
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Aleksandrov HA, Neyman KM, Hadjiivanov KI, Vayssilov GN. Can the state of platinum species be unambiguously determined by the stretching frequency of an adsorbed CO probe molecule? Phys Chem Chem Phys 2018; 18:22108-21. [PMID: 27444400 DOI: 10.1039/c6cp03988j] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The paper addresses possible ambiguities in the determination of the state of platinum species by the stretching frequency of a CO probe, which is a common technique for characterization of platinum-containing catalytic systems. We present a comprehensive comparison of the available experimental data with our theoretical modeling (density functional) results of pertinent systems - platinum surfaces, nanoparticles and clusters as well as reduced or oxidized platinum moieties on a ceria support. Our results for CO adsorbed on-top on metallic Pt(0), with C-O vibrational frequencies in the region 2018-2077 cm(-1), suggest that a decrease of the coordination number of the platinum atom, to which CO is bound, by one lowers the CO frequency by about 7 cm(-1). This trend corroborates the Kappers-van der Maas correlation derived from the analysis of the experimental stretching frequency of CO adsorbed on platinum-containing samples on different supports. We also analyzed the effect of the charge of platinum species on the CO frequency. Based on the calculated vibrational frequencies of CO in various model systems, we concluded that the actual state of the platinum species may be mistaken based only on the measured value of the C-O vibrational frequency due to overlapping regions of frequencies corresponding to different types of species. In order to identify the actual state of platinum species one has to combine this powerful technique with other approaches.
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Affiliation(s)
- Hristiyan A Aleksandrov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria. and Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Konstantin M Neyman
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional, Universitat de Barcelona, 08028 Barcelona, Spain and Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain.
| | - Konstantin I Hadjiivanov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Georgi N Vayssilov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria.
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31
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DeRita L, Dai S, Lopez-Zepeda K, Pham N, Graham GW, Pan X, Christopher P. Catalyst Architecture for Stable Single Atom Dispersion Enables Site-Specific Spectroscopic and Reactivity Measurements of CO Adsorbed to Pt Atoms, Oxidized Pt Clusters, and Metallic Pt Clusters on TiO2. J Am Chem Soc 2017; 139:14150-14165. [DOI: 10.1021/jacs.7b07093] [Citation(s) in RCA: 390] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Leo DeRita
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Sheng Dai
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Kimberly Lopez-Zepeda
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Nicholas Pham
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - George W. Graham
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Xiaoqing Pan
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Phillip Christopher
- Department
of Chemical and Environmental Engineering, ‡Program in Materials
Science and Engineering, and §UCR Center for Catalysis, University of California Riverside, Riverside, California 92521, United States
- Department of Chemical Engineering and Materials Science and ⊥Department of
Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
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32
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Ruiz Puigdollers A, Schlexer P, Tosoni S, Pacchioni G. Increasing Oxide Reducibility: The Role of Metal/Oxide Interfaces in the Formation of Oxygen Vacancies. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01913] [Citation(s) in RCA: 423] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio Ruiz Puigdollers
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Philomena Schlexer
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Sergio Tosoni
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
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33
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Figueroba A, Bruix A, Kovács G, Neyman KM. Metal-doped ceria nanoparticles: stability and redox processes. Phys Chem Chem Phys 2017; 19:21729-21738. [PMID: 28776626 DOI: 10.1039/c7cp02820b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Doping oxide materials by inserting atoms of a different element in their lattices is a common procedure for modifying properties of the host oxide. Using catalytically active, yet expensive noble metals as dopants allows synthesizing materials with atomically dispersed metal atoms, which can become cost-efficient catalysts. The stability and chemical properties of the resulting materials depend on the structure of the host oxide and on the position of the dopant atoms in it. In the present work we analyze by means of density functional calculations the relative stability and redox properties of cerium dioxide (ceria) nanoparticles doped with atoms of four technologically relevant transition metals - Pt, Pd, Ni and Cu. Our calculations indicate that the dopants are most stable at surface positions of ceria nanoparticles, highlighting the role of under-coordinated sites in the preparation and characterization of doped nanostructured oxides. The energies of two catalytically important reduction reactions - the formation of oxygen vacancies and homolytic dissociative adsorption of H2 - are found to strongly depend on the position of the doping atoms in nanoparticulate ceria.
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Affiliation(s)
- Alberto Figueroba
- Departament de Ciència dels Materials i Química Física & Institut de Química Teòrica i Computacional, Universitat de Barcelona, 08028 Barcelona, Spain
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34
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Koleva IZ, Aleksandrov HA, Vayssilov GN. Decomposition behavior of platinum clusters supported on ceria and γ-alumina in the presence of carbon monoxide. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02586b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon monoxide facilitates decomposition of platinum clusters supported on ceria, while carbonylated platinum clusters are stable on gamma alumina.
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Affiliation(s)
- Iskra Z. Koleva
- Faculty of Chemistry and Pharmacy
- University of Sofia
- 1126 Sofia
- Bulgaria
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35
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Paz-Borbón LO, López-Martínez A, Garzón IL, Posada-Amarillas A, Grönbeck H. 2D–3D structural transition in sub-nanometer PtN clusters supported on CeO2(111). Phys Chem Chem Phys 2017; 19:17845-17855. [DOI: 10.1039/c7cp02753b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal particles dispersed on oxide supports are used as heterogeneous catalysts in numerous applications.
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Affiliation(s)
| | | | - Ignacio L. Garzón
- Instituto de Física
- Universidad Nacional Autónoma de México
- 01000 México
- Mexico
| | | | - Henrik Grönbeck
- Competence Centre for Catalysis and Department of Physics
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
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36
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Lykhach Y, Bruix A, Fabris S, Potin V, Matolínová I, Matolín V, Libuda J, Neyman KM. Oxide-based nanomaterials for fuel cell catalysis: the interplay between supported single Pt atoms and particles. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00710h] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Nanomaterials coated with atomically dispersed platinum on ceria are structurally dynamic and show high potential for applications in fuel cells.
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Affiliation(s)
- Yaroslava Lykhach
- Lehrstuhl für Physikalische Chemie II
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Albert Bruix
- Department of Physics and Astronomy and Interdisciplinary Nanoscience Center
- Aarhus University
- DK-8000 Aarhus
- Denmark
| | - Stefano Fabris
- CNR-IOM DEMOCRITOS
- Istituto Officina dei Materiali
- Consiglio Nazionale delle Ricerche and SISSA
- Trieste
- Italy
| | - Valérie Potin
- Laboratoire Interdisciplinaire Carnot de Bourgogne
- UMR 6303 CNRS-Université de Bourgogne Franche-Comté
- F-21078 Dijon Cedex
- France
| | - Iva Matolínová
- Faculty of Mathematics and Physics
- Department of Surface and Plasma Science
- Charles University
- 18000 Prague
- Czech Republic
| | - Vladimír Matolín
- Faculty of Mathematics and Physics
- Department of Surface and Plasma Science
- Charles University
- 18000 Prague
- Czech Republic
| | - Jörg Libuda
- Lehrstuhl für Physikalische Chemie II
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
- Erlangen Catalysis Resource Center
| | - Konstantin M. Neyman
- Departament de Ciència dels Materials i Química Física and Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- ICREA (Institució Catalana de Recerca i Estudis Avançats)
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37
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Kozlov SM, Neyman KM. Effects of electron transfer in model catalysts composed of Pt nanoparticles on CeO2(1 1 1) surface. J Catal 2016. [DOI: 10.1016/j.jcat.2016.10.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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38
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Taira K, Nakao K, Suzuki K, Einaga H. SOx Tolerant Pt/TiO2 Catalysts for CO Oxidation and the Effect of TiO2 Supports on Catalytic Activity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:9773-9780. [PMID: 27501217 DOI: 10.1021/acs.est.6b01652] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We developed a new technique for mitigating catalyst deactivation caused by SO2 in exhaust gases. A series of 0.1 wt %-Pt/TiO2 catalysts with different surface, crystal, and pore structures were prepared and tested for CO oxidation activity in the presence of SO2 and H2O. The order of the CO oxidation activity under the influence of SO2 was much different from that in the absence of SO2. Catalysts with a high ratio of larger pores exhibited higher catalytic activity under the influence of SO2 and H2O in the temperature range of 250-300 °C, whereas other parameters, such as BET surface area and crystal structure of the TiO2 support, had minor effects on the CO oxidation activity. The oxidation state of Pt differed significantly depending on the kind of TiO2 support. Some catalysts were less active without H2 reduction pretreatment due to the presence of oxidized Pt species.
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Affiliation(s)
- Kenji Taira
- Advanced Technology Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan
- Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University , 6-1 Kasuga-koen Kasuga-city Fukuoka, Japan
| | - Kenji Nakao
- Advanced Technology Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan
| | - Kimihito Suzuki
- Advanced Technology Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan
| | - Hisahiro Einaga
- Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University , 6-1 Kasuga-koen Kasuga-city Fukuoka, Japan
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39
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Gatla S, Aubert D, Agostini G, Mathon O, Pascarelli S, Lunkenbein T, Willinger MG, Kaper H. Room-Temperature CO Oxidation Catalyst: Low-Temperature Metal–Support Interaction between Platinum Nanoparticles and Nanosized Ceria. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00677] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suresh Gatla
- European Synchroton Radiation Facility, 71, Ave des Martyrs, 38 000 Grenoble, France
| | - Daniel Aubert
- Ceramic
Synthesis and Functionalization Laboratory, UMR 3080, CNRS/Saint-Gobain CREE, 550, Ave Alphonse Jauffret, 84306 Cavaillon, France
| | - Giovanni Agostini
- European Synchroton Radiation Facility, 71, Ave des Martyrs, 38 000 Grenoble, France
| | - Olivier Mathon
- European Synchroton Radiation Facility, 71, Ave des Martyrs, 38 000 Grenoble, France
| | - Sakura Pascarelli
- European Synchroton Radiation Facility, 71, Ave des Martyrs, 38 000 Grenoble, France
| | - Thomas Lunkenbein
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department
of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Marc Georg Willinger
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department
of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Helena Kaper
- Ceramic
Synthesis and Functionalization Laboratory, UMR 3080, CNRS/Saint-Gobain CREE, 550, Ave Alphonse Jauffret, 84306 Cavaillon, France
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40
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41
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Delbecq F, Li Y, Loffreda D. Metal–support interaction effects on chemo–regioselectivity: Hydrogenation of crotonaldehyde on Pt 13 /CeO 2 (1 1 1). J Catal 2016. [DOI: 10.1016/j.jcat.2015.10.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Figueroba A, Kovács G, Bruix A, Neyman KM. Towards stable single-atom catalysts: strong binding of atomically dispersed transition metals on the surface of nanostructured ceria. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00294c] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Surface oxygen sites on CeO2 nanostructures are able to bind atoms of various transition metals strong enough to prevent their sintering. This finding opens a knowledge-driven way to prepare stable single-atom catalysts with maximum metal efficiency.
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Affiliation(s)
- Alberto Figueroba
- Departament de Química Física & Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Gábor Kovács
- Departament de Química Física & Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Albert Bruix
- Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Konstantin M. Neyman
- Departament de Química Física & Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA)
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43
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Dole HA, Costa AC, Couillard M, Baranova EA. Quantifying metal support interaction in ceria-supported Pt, PtSn and Ru nanoparticles using electrochemical technique. J Catal 2016. [DOI: 10.1016/j.jcat.2015.10.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Abstract
Cerium dioxide is a compound important for heterogeneous catalysis, energy technologies, biomedical applications, etc. One of its most remarkable properties is low O vacancy (Ovac) formation energy Ef. Nanostructuring of ceria was shown to decrease Ef and to make the oxide material more active in oxidative reactions. Here we investigate computationally formation of Ovac on CeO2(111) surfaces nanostructured by steps with experimentally observed structures. To facilitate the search for Ovac + 2Ce(3+) configurations that yield the lowest Ef values we proposed and employed an efficient computational scheme where DFT + U calculations were preceded by a pre-screening procedure based on the results of plain DFT calculations. Ef values on the steps were calculated to be up to 0.7 eV lower than on a regular CeO2(111) surface. Some energetically stable Ovac + 2Ce(3+) configurations were found to include subsurface Ce(3+) ions. The present results quantify to what extent the roughness of the CeO2(111) surface affects its reducibility.
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Affiliation(s)
- Sergey M Kozlov
- Departament de Química Física and Institut de Quimica Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/Marti i Franques 1, 08028 Barcelona, Spain
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45
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Hoh SW, Thomas L, Jones G, Willock DJ. A density functional study of oxygen vacancy formation on α-Fe2O3(0001) surface and the effect of supported Au nanoparticles. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1984-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Tereshchuk P, Freire RLH, Ungureanu CG, Seminovski Y, Kiejna A, Da Silva JLF. The role of charge transfer in the oxidation state change of Ce atoms in the TM13–CeO2(111) systems (TM = Pd, Ag, Pt, Au): a DFT + U investigation. Phys Chem Chem Phys 2015; 17:13520-30. [DOI: 10.1039/c4cp06016d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Despite extensive studies of transition-metal (TM) clusters supported on ceria, the role of TM atoms in the oxidation state change of Ce atoms is still unclear.
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Affiliation(s)
- Polina Tereshchuk
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | | | - Crina G. Ungureanu
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Yohanna Seminovski
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Adam Kiejna
- Institute of Experimental Physics
- University of Wrocław
- PL-50-204 Wrocław
- Poland
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47
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Aleksandrov HA, Neyman KM, Vayssilov GN. The structure and stability of reduced and oxidized mononuclear platinum species on nanostructured ceria from density functional modeling. Phys Chem Chem Phys 2015; 17:14551-60. [DOI: 10.1039/c5cp01685a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The most stable neutral and ionic mononuclear platinum species and their positions on a ceria nanoparticle under different conditions are identified.
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Affiliation(s)
- Hristiyan A. Aleksandrov
- Faculty of Chemistry and Pharmacy
- University of Sofia
- 1126 Sofia
- Bulgaria
- Departament de Química Física & Institut de Química Teòrica i Computacional (IQTC-UB)
| | - Konstantin M. Neyman
- Departament de Química Física & Institut de Química Teòrica i Computacional (IQTC-UB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA)
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48
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Choi Y, Scott M, Söhnel T, Idriss H. A DFT + U computational study on stoichiometric and oxygen deficient M–CeO2 systems (M = Pd1, Rh1, Rh10, Pd10 and Rh4Pd6). Phys Chem Chem Phys 2014; 16:22588-99. [DOI: 10.1039/c4cp03366c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular and dissociative adsorption processes of ethanol on stoichiometric and O-defected CeO2(111) surfaces alone as well as in the presence of one metal atom (Pd or Rh) are studied using spin-polarized density functional theory (DFT) with the GGA + U method (Ueff = 5.0 eV).
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Affiliation(s)
| | - M. Scott
- School of Chemical Sciences
- The University of Auckland
- Auckland, New Zealand
| | - T. Söhnel
- School of Chemical Sciences
- The University of Auckland
- Auckland, New Zealand
| | - Hicham Idriss
- SABIC Center for Research and Innovation (CRI) at King Abdullah University of Science of Technology (KAUST)
- Thuwal, Saudi Arabia
- Department of Chemistry
- University College London
- London WC1H 0AJ, UK
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49
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Cao M, Wu D, Cao R. Recent Advances in the Stabilization of Platinum Electrocatalysts for Fuel-Cell Reactions. ChemCatChem 2013. [DOI: 10.1002/cctc.201300647] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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50
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Kozlov SM, Aleksandrov HA, Goniakowski J, Neyman KM. Effect of MgO(100) support on structure and properties of Pd and Pt nanoparticles with 49-155 atoms. J Chem Phys 2013; 139:084701. [DOI: 10.1063/1.4817948] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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