1
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Yu WZ, Wu MY, Wang WW, Jia CJ. In Situ Generation of the Surface Oxygen Vacancies in a Copper-Ceria Catalyst for the Water-Gas Shift Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10499-10509. [PMID: 34435787 DOI: 10.1021/acs.langmuir.1c01428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The dissociation of H2O is a crucial aspect for the water-gas shift reaction, which often occurs on the vacancies of a reducible oxide support. However, the vacancies sometimes run off, thus inhibiting H2O dissociation. After high-temperature treatment, the ceria supports were lacking vacancies because of sintering. Unexpectedly, the in situ generation of surface oxygen vacancies was observed, ensuring the efficient dissociation of H2O. Due to the surface reconstruction of ceria nanorods, the copper species sustained were highly dispersed on the sintered support, on which CO was adsorbed efficiently to react with hydroxyls from H2O dissociation. In contrast, no surface reconstruction occurred in ceria nanoparticles, leading to the sintering of copper species. The sintered copper species were averse to adsorb CO, so the copper-ceria nanoparticle catalyst had poor reactivity even when surface oxygen vacancies could be generated in situ.
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Affiliation(s)
- Wen-Zhu Yu
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Mei-Yao Wu
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Wei-Wei Wang
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Chun-Jiang Jia
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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2
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Xiao Q, Wei S, Wang WW, Jia CJ. The Effect of Hydrogenated TiO 2 to the Au/TiO 2 Catalyst in Catalyzing CO Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3270-3280. [PMID: 33705652 DOI: 10.1021/acs.langmuir.0c03167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Supported Au catalysts are widely used for CO oxidation due to their extremely high activity, and the modification of a support structure is a crucial method to improve catalytic performance. Herein, we prepared gold catalysts supported on flaky TiO2 and on TiO2 hydrogenated at different temperatures (200, 400, and 600 °C). We found that the sample with the support pretreated in hydrogen at 600 °C (0.5Au/TiO2-H600) showed the greatest advantages in activity and stability over the sample with as-prepared TiO2 nanosheets (0.5Au/TiO2-UC). First, calcination at 600 °C changed the exposed surface of TiO2 from {001} to {101}, and gold nanoparticles (2-3 nm) were observed as highly reactive species on 0.5Au/TiO2-H600. Moreover, the increase of oxygen vacancies on the surface of 0.5Au/TiO2-H600 was conducive to oxygen activation and promoted the catalytic activity. Therefore, we emphasized the important role of the support and gave an effective method to improve the catalytic performance by regulating the support structure.
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Affiliation(s)
- Qi Xiao
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Shuai Wei
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Wei-Wei Wang
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Chun-Jiang Jia
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
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3
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Yiu SC, Nunns A, Ho CL, Ngai JHL, Meng Z, Li G, Gwyther J, Whittell GR, Manners I, Wong WY. Nanostructured Bimetallic Block Copolymers as Precursors to Magnetic FePt Nanoparticles. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00088] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sze-Chun Yiu
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Adam Nunns
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
| | - Cheuk-Lam Ho
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Jenner Ho-Loong Ngai
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Zhengong Meng
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | | | - Jessica Gwyther
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
| | | | - Ian Manners
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
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4
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Guo Y, Liu X, Wang Y. Catalytic and DRIFTS Studies of Pt-Based Bimetallic Alloy Catalysts in Aqueous-Phase Reforming of Glycerol. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05774] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong Guo
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiaohui Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanqin Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
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5
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Wong A, Liu Q, Griffin S, Nicholls A, Regalbuto JR. Synthesis of ultrasmall, homogeneously alloyed, bimetallic nanoparticles on silica supports. Science 2017; 358:1427-1430. [DOI: 10.1126/science.aao6538] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/13/2017] [Indexed: 01/19/2023]
Abstract
Supported nanoparticles containing more than one metal have a variety of applications in sensing, catalysis, and biomedicine. Common synthesis techniques for this type of material often result in large, unalloyed nanoparticles that lack the interactions between the two metals that give the particles their desired characteristics. We demonstrate a relatively simple, effective, generalizable method to produce highly dispersed, well-alloyed bimetallic nanoparticles. Ten permutations of noble and base metals (platinum, palladium, copper, nickel, and cobalt) were synthesized with average particle sizes from 0.9 to 1.4 nanometers, with tight size distributions. High-resolution imaging and x-ray analysis confirmed the homogeneity of alloying in these ultrasmall nanoparticles.
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6
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7
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Meng Z, Li G, Wong HF, Ng SM, Yiu SC, Ho CL, Leung CW, Manners I, Wong WY. Patterning of L1 0 FePt nanoparticles with ultra-high coercivity for bit-patterned media. NANOSCALE 2017; 9:731-738. [PMID: 27959375 DOI: 10.1039/c6nr07863j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
L10-ordered FePt nanoparticles (NPs) with ultra-high coercivity were directly prepared from a new metallopolyyne using a one-step pyrolysis method. The chemical ordering, morphology and magnetic properties of the as-synthesized FePt NPs have been studied. Magnetic measurements show the coercivity of these FePt NPs is as high as 3.6 T. Comparison of NPs synthesized under the Ar and Ar/H2 atmospheres shows that the presence of H2 in the annealing environment influences the nucleation and promotes the growth of L10-FePt NPs. Application of this metallopolymer for bit-patterned media was also demonstrated using nanoimprint lithography.
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Affiliation(s)
- Zhengong Meng
- Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China.
| | - Guijun Li
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China.
| | - Hon-Fai Wong
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China.
| | - Sheung-Mei Ng
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China.
| | - Sze-Chun Yiu
- Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China.
| | - Cheuk-Lam Ho
- Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China.
| | - Chi-Wah Leung
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China.
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK.
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China.
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8
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Kuzutani T, Torihata Y, Suzuki H, Takao T. Synthesis of a Heterometallic Trinuclear Cluster of Ruthenium and Platinum with a Linear Alignment. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00449] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Kuzutani
- Department of Chemical Science and Engineering, School
of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yushi Torihata
- Department of Chemical Science and Engineering, School
of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiroharu Suzuki
- Department of Chemical Science and Engineering, School
of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Toshiro Takao
- Department of Chemical Science and Engineering, School
of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
- JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 3332-0012, Japan
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9
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Liu L, Zhou F, Kodiyath R, Ueda S, Abe H, Wang D, Deng Y, Ye J. CO tolerance of Pt/FeOxcatalyst in both thermal catalytic H2oxidation and electrochemical CO oxidation: the effect of Pt deficit electron state. Phys Chem Chem Phys 2016; 18:29607-29615. [DOI: 10.1039/c6cp05289d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Decreased electron density of Pt in Pt/Fe enhances the mobility of adsorbed CO, suppresses Pt–CO bonding and prominently enhances CO-tolerance.
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Affiliation(s)
- Lequan Liu
- TU-NIMS Joint Research Center
- Key Lab of Advanced Ceramics and Machining Technology (Ministry of Education)
- School of Materials Science and Engineering
- Tianjin University
- Tianjin
| | - Feng Zhou
- Centre for Green Chemistry and Catalysis
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Rajesh Kodiyath
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- Environmental Remediation Materials Unit
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Shigenori Ueda
- Synchrotron X-ray Station at SPring-8
- National Institute for Materials Science
- Sayo
- Japan
- Quantum Beam Unit
| | - Hideki Abe
- International Center for Materials Nanoarchitectonics (WPI-MANA)
- Environmental Remediation Materials Unit
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Defa Wang
- TU-NIMS Joint Research Center
- Key Lab of Advanced Ceramics and Machining Technology (Ministry of Education)
- School of Materials Science and Engineering
- Tianjin University
- Tianjin
| | - Youquan Deng
- Centre for Green Chemistry and Catalysis
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Jinhua Ye
- TU-NIMS Joint Research Center
- Key Lab of Advanced Ceramics and Machining Technology (Ministry of Education)
- School of Materials Science and Engineering
- Tianjin University
- Tianjin
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10
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Zheng B, Liu G, Geng L, Cui J, Wu S, Wu P, Jia M, Yan W, Zhang W. Role of the FeOxsupport in constructing high-performance Pt/FeOxcatalysts for low-temperature CO oxidation. Catal Sci Technol 2016. [DOI: 10.1039/c5cy00840a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The FeOxsupport not only affects the oxidation state of Pt nanoparticles, but also provides active sites in the catalytic process.
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Affiliation(s)
- Bin Zheng
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Gang Liu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Longlong Geng
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Junyan Cui
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Shujie Wu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Ping Wu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Mingjun Jia
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Wenfu Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Wenxiang Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- China
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11
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Nguyen L, Zhang S, Yoon SJ, Tao F(F. Preferential Oxidation of CO in H
2
on Pure Co
3
O
4−
x
and Pt/Co
3
O
4−
x. ChemCatChem 2015. [DOI: 10.1002/cctc.201500320] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luan Nguyen
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Kansas, KS 66045 (USA)
| | - Shiran Zhang
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Kansas, KS 66045 (USA)
| | - Seog Joon Yoon
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556 (USA)
| | - Franklin (Feng) Tao
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Kansas, KS 66045 (USA)
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12
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Buchwalter P, Rosé J, Braunstein P. Multimetallic catalysis based on heterometallic complexes and clusters. Chem Rev 2014; 115:28-126. [PMID: 25545815 DOI: 10.1021/cr500208k] [Citation(s) in RCA: 569] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Paulin Buchwalter
- Laboratoire de Chimie de Coordination (UMR 7177 CNRS), Institut Le Bel - Université de Strasbourg , 4, rue Blaise Pascal F-67081, Strasbourg, France
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13
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Thomas JM. Heterogeneous catalysis and the challenges of powering the planet, securing chemicals for civilised life, and clean efficient utilization of renewable feedstocks. CHEMSUSCHEM 2014; 7:1801-1832. [PMID: 24988917 DOI: 10.1002/cssc.201301202] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Indexed: 06/03/2023]
Abstract
This article reviews, first, the prospects, practices and principles of generating solar fuels. It does so with an analysis of recent progress in the light-driven emission of H2 (and other fuels) as well as O2 from water. To place this challenge in perspective, some current practices entailing the use of well-proven solid catalysts developed for fossil-based feedstocks, are described. The massive differences between proven methods of generating fuel and chemicals from non-renewable and from solar radiation are emphasized with the aid of numerous quantitative examples. Whilst it is acknowledged that a key action in reducing the liberation of greenhouse gases (GHG) is to tackle the challenge of decreasing their evolution in power generation and in the production of steel, aluminium and other bulk commodities (metals, alloys, concrete and ceramics), nevertheless much can be done to diminish the emission of CO2 (and to use it as feedstock) through the agency of new, designed solid catalysts and microalgae. Solar-thermal converters are also attractive alternatives, even though they are more likely to be used centrally rather than in small modular units like 'artificial leaves,' some of which are promising for the purposes of generating energy (and perhaps fuel) in a delocalized, modular manner.
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Affiliation(s)
- John Meurig Thomas
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS (UK).
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14
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Nazarpoor Z, Khivantsev K, Kyriakidou E, Kubicki C, Ma S, Fanson PT, Alexeev OS, Amiridis MD. Dendrimer-mediated synthesis of supported rhodium nanoparticles with controlled size: effect of pH and dialysis. J Colloid Interface Sci 2013; 398:22-32. [PMID: 23499295 DOI: 10.1016/j.jcis.2013.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/18/2013] [Accepted: 02/04/2013] [Indexed: 12/31/2022]
Abstract
Rh-dendrimer nanocomposites were synthesized in solution under different conditions and were subsequently used as precursors for the preparation of ZrO2-supported Rh nanoparticles. Elemental analysis, UV-vis, XPS, and STEM measurements were used to estimate the extent of the Rh-dendrimer interactions and to illustrate how the solution pH and dialysis affect the number of Rh atoms complexed with each dendrimer molecule, as well as the final size of the ZrO2-supported Rh particles. When the solution acidity was not controlled and the solution was not purified by dialysis, Rh particles with sizes in the 1-6 nm range were formed on the ZrO2 support. In contrast, the formation of nearly uniform Rh particles was observed when the synthesis was performed under controlled pH and dialysis conditions. Furthermore, the size of these Rh particles can be regulated by controlling the Rh/dendrimer ratio in the original solution.
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Affiliation(s)
- Zahra Nazarpoor
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA
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15
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Gallo A, Psaro R, Guidotti M, Dal Santo V, Pergola RD, Masih D, Izumi Y. Cluster-derived Ir–Sn/SiO2 catalysts for the catalytic dehydrogenation of propane: a spectroscopic study. Dalton Trans 2013; 42:12714-24. [DOI: 10.1039/c3dt51144h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Chen L, Ma D, Zhang Z, Guo Y, Ye D, Huang B. Synergistic Effect of a Carbon Black Supported PtAg Non-Alloy Bimetal Nanocatalyst for CO Preferential Oxidation in Excess Hydrogen. ChemCatChem 2012. [DOI: 10.1002/cctc.201200365] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Chen L, Ma D, Zhang Z, Guo Y, Ye D, Huang B. Low Pt Loading High Catalytic Performance of PtFeNi/Carbon Nanotubes Catalysts for CO Preferential Oxidation in Excess Hydrogen I: Promotion Effects of Fe and/or Ni. Catal Letters 2012. [DOI: 10.1007/s10562-012-0850-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Liu K, Wang A, Zhang T. Recent Advances in Preferential Oxidation of CO Reaction over Platinum Group Metal Catalysts. ACS Catal 2012. [DOI: 10.1021/cs200418w] [Citation(s) in RCA: 331] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kuo Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
457 Zhongshan Road, Dalian 116023, People's Republic of China
| | - Aiqin Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
457 Zhongshan Road, Dalian 116023, People's Republic of China
| | - Tao Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
457 Zhongshan Road, Dalian 116023, People's Republic of China
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19
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Gu XK, Ouyang R, Sun D, Su HY, Li WX. CO oxidation at the perimeters of an FeO/Pt(111) interface and how water promotes the activity: a first-principles study. CHEMSUSCHEM 2012; 5:871-878. [PMID: 22162485 DOI: 10.1002/cssc.201100525] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 10/25/2011] [Indexed: 05/31/2023]
Abstract
The catalytic role of the Pt--Fe cation ensemble presented at the perimeters of the FeO film supported on Pt(111) for low-temperature CO oxidation and the promotion of water on activity were studied by using DFT calculations. We found that the perimeter sites along the edge of the FeO islands on Pt provided a favorable ensemble that consisted of coordinatively unsaturated ferrous species and nearby Pt atoms for O(2) and H(2) O activation free from CO poison. A dissociative oxygen atom at the Pt--Fe cation ensemble reacts easily with CO adsorbed on nearby Pt. The OH group from water dissociation not only facilitates activation of the oxygen molecule, more importantly it opens a facile reaction channel for CO oxidation through the formation of the carboxyl intermediate. The presence of the OH group on the FeO film strengthens interfacial interactions between FeO and Pt(111), which would make the FeO film more resistant to further oxidation. The importance of the Pt--Fe cation ensemble and the role of water as a cocatalyst for low-temperature CO oxidation is highlighted.
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Affiliation(s)
- Xiang-Kui Gu
- State Key Laboratory of Catalysis and Center for Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, PR China
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20
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Qiu H, Huang X. Retracted article: Nanoporous PtFe surface alloy architecture for enhanced methanol electro-oxidation. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16106k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Uffalussy KJ, Captain BK, Adams RD, Hungria AB, Monnier JR, Amiridis MD. Synthesis and Characterization of Cluster-Derived PtRu5Sn Catalysts. ACS Catal 2011. [DOI: 10.1021/cs2003559] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Ana B. Hungria
- Department of Chemistry, University of Cadiz, 11001 Cadiz, Spain
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22
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Chatterjee S, Patel SK, Mobin SM. Synthesis and characterization of diphosphine bridged homo and heterometallic clusters containing chalcogen as “naked” atoms. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Su HY, Gu XK, Ma X, Zhao YH, Bao XH, Li WX. Structure evolution of Pt–3d transition metal alloys under reductive and oxidizing conditions and effect on the CO oxidation: a first-principles study. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.10.069] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Siani A, Captain B, Adams RD, Alexeev OS, Amiridis MD. Synthesis and Structural Characterization of SiO2-Supported PtFe Catalysts Prepared from PtFe2(C8H12)(CO)8. Top Catal 2011. [DOI: 10.1007/s11244-011-9665-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mu R, Fu Q, Xu H, Zhang H, Huang Y, Jiang Z, Zhang S, Tan D, Bao X. Synergetic effect of surface and subsurface Ni species at Pt-Ni bimetallic catalysts for CO oxidation. J Am Chem Soc 2011; 133:1978-86. [PMID: 21247156 DOI: 10.1021/ja109483a] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Various well-defined Ni-Pt(111) model catalysts are constructed at atomic-level precision under ultra-high-vacuum conditions and characterized by X-ray photoelectron spectroscopy and scanning tunneling microscopy. Subsequent studies of CO oxidation over the surfaces show that a sandwich surface (NiO(1-x)/Pt/Ni/Pt(111)) consisting of both surface Ni oxide nanoislands and subsurface Ni atoms at a Pt(111) surface presents the highest reactivity. A similar sandwich structure has been obtained in supported Pt-Ni nanoparticles via activation in H(2) at an intermediate temperature and established by techniques including acid leaching, inductively coupled plasma, and X-ray adsorption near-edge structure. Among the supported Pt-Ni catalysts studied, the sandwich bimetallic catalysts demonstrate the highest activity to CO oxidation, where 100% CO conversion occurs near room temperature. Both surface science studies of model catalysts and catalytic reaction experiments on supported catalysts illustrate the synergetic effect of the surface and subsurface Ni species on the CO oxidation, in which the surface Ni oxide nanoislands activate O(2), producing atomic O species, while the subsurface Ni atoms further enhance the elementary reaction of CO oxidation with O.
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Affiliation(s)
- Rentao Mu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
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Kim YH, Park ED, Lee HC, Lee D, Lee KH. Preferential CO oxidation over supported noble metal catalysts. Catal Today 2009. [DOI: 10.1016/j.cattod.2009.01.045] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Anpo M, Kim TH, Matsuoka M. The design of Ti-, V-, Cr-oxide single-site catalysts within zeolite frameworks and their photocatalytic reactivity for the decomposition of undesirable molecules—The role of their excited states and reaction mechanisms. Catal Today 2009. [DOI: 10.1016/j.cattod.2008.11.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Thomas JM, Hernandez-Garrido JC, Raja R, Bell RG. Nanoporous oxidic solids: the confluence of heterogeneous and homogeneous catalysis. Phys Chem Chem Phys 2009; 11:2799-825. [DOI: 10.1039/b819249a] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yin J, Wang J, Zhang T, Wang X. Novel Alumina-Supported PtFe Alloy Nanoparticles for Preferential Oxidation of Carbon Monoxide in Hydrogen. Catal Letters 2008. [DOI: 10.1007/s10562-008-9513-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kamegawa T, Matsuoka M, Anpo M. Photocatalytic selective oxidation of CO with O2 in the presence of H2 over highly dispersed chromium oxide on silica under visible or solar light irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2008. [DOI: 10.1163/156856708784040614] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Low-temperature CO oxidation over supported Pt catalysts prepared by colloid-deposition method. CATAL COMMUN 2008. [DOI: 10.1016/j.catcom.2007.10.016] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Meurig Thomas J, Adams RD, Boswell EM, Captain B, Grönbeck H, Raja R. Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin. Faraday Discuss 2008; 138:301-15; discussion 317-35, 433-4. [DOI: 10.1039/b706151j] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lee YB, Wong WT. Synthesis and characterisation of high-nuclearity osmium-silver mixed-metal clusters. Chem Commun (Camb) 2007:3924-6. [PMID: 17896034 DOI: 10.1039/b709860j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of the triosmium cluster anion, [Os(3)(micro-H)(CO)(11)][PPN] (PPN = [N(PPh(3))2]+), with [AgPF(6)] in the presence of [Ir(PPh(3))2(CO)Cl] in THF at room temperature affords two new high-nuclearity osmium-silver clusters, [Os(13)Ag(9)(CO)48][PPN] (1) and [Os(9)Ag(9)(micro3-O)2(CO)30][PPN] (2), and an iridium complex, [Ir(PPh(3))2(CO)Cl(O(2))] (3).
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Affiliation(s)
- Yui-Bing Lee
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, Peoples Republic of China
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Rutledge RD, Morris WH, Wellons MS, Gai Z, Shen J, Bentley J, Wittig JE, Lukehart CM. Formation of FePt Nanoparticles Having High Coercivity. J Am Chem Soc 2006; 128:14210-1. [PMID: 17076466 DOI: 10.1021/ja0633868] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ultrasonication of toluene solutions of the heteropolynuclear cluster complex, Pt3Fe3(CO)15, in the presence of oleic acid and oleylamine affords surface-capped fcc FePt nanoparticles having an average diameter of ca. 2 nm. Self-assembled arrays of these nanoparticles on oxidized Si wafers undergo a fcc-to-fct phase transition at 775 degrees C to form ferromagnetic FePt nanocrystals ca. 5.8 nm in diameter well dispersed on the Si wafer surface. Room-temperature coercivity measurements of these annealed FePt nanoparticles confirm a high coercivity of ca. 22.3 kOe. Such high coercivity for fct FePt nanoparticles might result from use of a heterpolynuclear complex as a single-source precursor of Fe and Pt neutral atoms or from use of ultrasonication to form fcc FePt nanoparticles under conditions of exceptionally rapid heating. Experiments to determine the critical experimental conditions required to achieve such high room-temperature coercivities in ferromagnetic nanoparticles are underway.
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Affiliation(s)
- Ryan D Rutledge
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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Adams RD, Captain B, Pearl WC. Bimetallic Clusters of Iron with Palladium and Platinum. Synthesis and Structures of Fe2(CO)9[M(PBut3)]2 (M = Pd or Pt) and Fe2(CO)8[Pt(PBut3)]2(μ-H)2. Inorg Chem 2006; 45:8283-7. [PMID: 16999428 DOI: 10.1021/ic061087d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of Fe2(CO)9 with Pd(PBu(t)3)2 and Pt(PBu(t)3)2 yielded the Fe-Pd and Fe-Pt cluster complexes Fe2(CO)9[M(PBu(t)3)]2, M = Pd (8) or Pt (9). The structures of 8 and 9 are analogous and consist of nearly planar butterfly clusters of two palladium/platinum atoms in the wing-tip positions and two mutually bonded iron atoms, Fe-Fe = 2.9582(11) A in 8 and 2.9100 (9) A in 9. Compound 8 decomposes to form the mononuclear iron compound Fe(CO)4(PBu(t)3) (11) when heated at 68 degrees C. The reaction of Pt(PBu(t)3)2 with Fe2(CO)9 in the presence of hydrogen at 127 degrees C yielded the dihydrido complex Fe2(CO)8[Pt(PBu(t)3)]2(mu-H)2 (10). Compound 10 contains a closed Fe2Pt2 tetrahedral cluster with hydrido ligands bridging two of the Fe-Pt bonds. Compounds 8, 9, and 10 were structurally characterized crystallographically.
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Affiliation(s)
- Richard D Adams
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
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Anpo M, Thomas JM. Single-site photocatalytic solids for the decomposition of undesirable molecules. Chem Commun (Camb) 2006:3273-8. [PMID: 16883411 DOI: 10.1039/b606738g] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic solids, in which the absorption occurs at isolated, spatially well-separated centres, are particularly useful catalysts for effecting reactions that are of prime importance in both remedial and preparative contexts. These are qualities that they share with single-site (thermally-activated) heterogeneous catalysts; but they have the added advantage of being more readily probed during the actual processes of catalytic turnover, since they generally function under ambient conditions, unlike most conventional solid catalysts which usually operate at elevated pressures and temperatures. Thus, they are amenable to investigation by (in situ) X-ray absorption (XAFS), FT-IR, UV-Vis, and EPR spectroscopic studies as well as to photoluminescence measurement. This affords greater insight into the mechanisms of the photocatalytic reactions as we illustrate in this short review. Open-structure solids such as mesoporous silica and zeolitic aluminosilicates offer a generally applicable strategy to design new single-site photocatalysts such as those described here for the decomposition of NO to N2 and O2 and for the selective oxidation of CO in the presence of H2.
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Affiliation(s)
- Masakazu Anpo
- Department of Applied Chemistry, Graduate School of Engineering Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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