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Polo-Garzon F, Yang SZ, Fung V, Foo GS, Bickel EE, Chisholm MF, Jiang DE, Wu Z. Controlling Reaction Selectivity through the Surface Termination of Perovskite Catalysts. Angew Chem Int Ed Engl 2017. [PMID: 28636790 DOI: 10.1002/anie.201704656] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Although perovskites have been widely used in catalysis, tuning of their surface termination to control reaction selectivity has not been well established. In this study, we employed multiple surface-sensitive techniques to characterize the surface termination (one aspect of surface reconstruction) of SrTiO3 (STO) after thermal pretreatment (Sr enrichment) and chemical etching (Ti enrichment). We show, by using the conversion of 2-propanol as a probe reaction, that the surface termination of STO can be controlled to greatly tune catalytic acid/base properties and consequently the reaction selectivity over a wide range, which is not possible with single-metal oxides, either SrO or TiO2 . Density functional theory (DFT) calculations explain well the selectivity tuning and reaction mechanism on STO with different surface termination. Similar catalytic tunability was also observed on BaZrO3 , thus highlighting the generality of the findings of this study.
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Affiliation(s)
- Felipe Polo-Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Shi-Ze Yang
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Victor Fung
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Guo Shiou Foo
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Elizabeth E Bickel
- Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN, 38505, USA
| | - Matthew F Chisholm
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - De-En Jiang
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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Polo‐Garzon F, Yang S, Fung V, Foo GS, Bickel EE, Chisholm MF, Jiang D, Wu Z. Controlling Reaction Selectivity through the Surface Termination of Perovskite Catalysts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704656] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Felipe Polo‐Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Shi‐Ze Yang
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Victor Fung
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Guo Shiou Foo
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Elizabeth E. Bickel
- Department of Chemical Engineering Tennessee Technological University Cookeville TN 38505 USA
| | - Matthew F. Chisholm
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - De‐en Jiang
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
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Zhang H, Zheng Z, Ma C, Zheng J, Zhang N, Li Y, Chen BH. Tuning Surface Properties and Catalytic Performances of Pt-Ru Bimetallic Nanoparticles by Thermal Treatment. ChemCatChem 2014. [DOI: 10.1002/cctc.201402793] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Humboldt and Bessel Research Awards, Camille Dreyfus Teacher-Scholar Awards. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201204696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Humboldt- und Bessel-Forschungspreise, Camille Dreyfus Teacher-Scholar Awards. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Shi G, Franzke T, Sánchez MD, Xia W, Weis F, Seipenbusch M, Kasper G, Muhler M. Thin-film β-MoO3 Supported on α-Fe2O3 as a Shell-Core Catalyst for the Selective Oxidation of Methanol to Formaldehyde. ChemCatChem 2012. [DOI: 10.1002/cctc.201200127] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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