101
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Farrusseng D, Tuel A. Perspectives on zeolite-encapsulated metal nanoparticles and their applications in catalysis. NEW J CHEM 2016. [DOI: 10.1039/c5nj02608c] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Recent strategies for the design of zeolites with unusual architectures and porosities offer many opportunities for the encapsulation of catalysts.
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Affiliation(s)
- David Farrusseng
- IRCELYON
- UMR 5256 CNRS-Université de Lyon 1
- 69626 Villeurbanne Cedex
- France
| | - Alain Tuel
- IRCELYON
- UMR 5256 CNRS-Université de Lyon 1
- 69626 Villeurbanne Cedex
- France
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102
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Wang Z, Liu H, Wu J, Lau WM, Mei J, Liu H, Liu G. Hierarchical LiNi0.8Co0.15Al0.05O2 plates with exposed {010} active planes as a high performance cathode material for Li-ion batteries. RSC Adv 2016. [DOI: 10.1039/c6ra02694j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hierarchical LiNi0.8Co0.15Al0.05O2 plates with exposed {010} active planes deliver a discharge capacity of 124 mA h g−1 at 10C.
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Affiliation(s)
- Zhen Wang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
| | - Heng Liu
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jian Wu
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu Development Center of Science and Technology
- China Academy of Engineering Physics
- Chengdu 610207
- China
| | - Woon-Ming Lau
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu Development Center of Science and Technology
- China Academy of Engineering Physics
- Chengdu 610207
- China
| | - Jun Mei
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu Development Center of Science and Technology
- China Academy of Engineering Physics
- Chengdu 610207
- China
| | - Hao Liu
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu Development Center of Science and Technology
- China Academy of Engineering Physics
- Chengdu 610207
- China
| | - Guobiao Liu
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu Development Center of Science and Technology
- China Academy of Engineering Physics
- Chengdu 610207
- China
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103
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Hu KJ, Plant SR, Ellis PR, Brown CM, Bishop PT, Palmer RE. Atomic Resolution Observation of a Size-Dependent Change in the Ripening Modes of Mass-Selected Au Nanoclusters Involved in CO Oxidation. J Am Chem Soc 2015; 137:15161-8. [DOI: 10.1021/jacs.5b08720] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kuo-Juei Hu
- Nanoscale
Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Simon R. Plant
- Nanoscale
Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Peter R. Ellis
- Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, Reading, RG4 9NH, U.K
| | - Christopher M. Brown
- Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, Reading, RG4 9NH, U.K
| | - Peter T. Bishop
- Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, Reading, RG4 9NH, U.K
| | - Richard E. Palmer
- Nanoscale
Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, U.K
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104
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Johns TR, Goeke RS, Ashbacher V, Thüne PC, Niemantsverdriet J, Kiefer B, Kim CH, Balogh MP, Datye AK. Relating adatom emission to improved durability of Pt–Pd diesel oxidation catalysts. J Catal 2015. [DOI: 10.1016/j.jcat.2015.03.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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105
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Prieto G, Schüth F. Bridging the gap between insightful simplicity and successful complexity: From fundamental studies on model systems to technical catalysts. J Catal 2015. [DOI: 10.1016/j.jcat.2014.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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106
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Ostwald ripening on a planar Co/SiO2 catalyst exposed to model Fischer–Tropsch synthesis conditions. J Catal 2015. [DOI: 10.1016/j.jcat.2015.02.017] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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107
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Tian H, Li X, Zeng L, Gong J. Recent Advances on the Design of Group VIII Base-Metal Catalysts with Encapsulated Structures. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01221] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hao Tian
- Key Laboratory
for Green
Chemical Technology of Ministry of Education, School of Chemical Engineering
and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Xinyu Li
- Key Laboratory
for Green
Chemical Technology of Ministry of Education, School of Chemical Engineering
and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Liang Zeng
- Key Laboratory
for Green
Chemical Technology of Ministry of Education, School of Chemical Engineering
and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Jinlong Gong
- Key Laboratory
for Green
Chemical Technology of Ministry of Education, School of Chemical Engineering
and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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108
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Su DS, Zhang B, Schlögl R. Electron microscopy of solid catalysts--transforming from a challenge to a toolbox. Chem Rev 2015; 115:2818-82. [PMID: 25826447 DOI: 10.1021/cr500084c] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Dang Sheng Su
- †Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.,‡Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Bingsen Zhang
- †Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Robert Schlögl
- ‡Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
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109
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Choi HW, Zhou T, Singh M, Jabbour GE. Recent developments and directions in printed nanomaterials. NANOSCALE 2015; 7:3338-55. [PMID: 25366473 DOI: 10.1039/c4nr03915g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this review, we survey several recent developments in printing of nanomaterials for contacts, transistors, sensors of various kinds, light-emitting diodes, solar cells, memory devices, and bone and organ implants. The commonly used nanomaterials are classified according to whether they are conductive, semiconducting/insulating or biological in nature. While many printing processes are covered, special attention is paid to inkjet printing and roll-to-roll printing in light of their complexity and popularity. In conclusion, we present our view of the future development of this field.
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Affiliation(s)
- Hyung Woo Choi
- Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
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110
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Huang Y, Ding D, Zhu M, Meng W, Huang Y, Geng F, Li J, Lin J, Tang C, Lei Z, Zhang Z, Zhi C. Facile synthesis of α-Fe 2O 3 nanodisk with superior photocatalytic performance and mechanism insight. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2015; 16:014801. [PMID: 27877744 PMCID: PMC5036498 DOI: 10.1088/1468-6996/16/1/014801] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 12/09/2014] [Accepted: 12/09/2014] [Indexed: 06/05/2023]
Abstract
Intrinsic short hole diffusion length is a well-known problem for α-Fe2O3 as a visible-light photocatalytic material. In this paper, a nanodisk morphology was designed to remarkably enhance separation of electron-hole pairs of α-Fe2O3. As expected, α-Fe2O3 nanodisks presented superior photocatalytic activity toward methylene blue degradation: more than 90% of the dye could be photodegraded within 30 min in comparison with a degradation efficiency of 50% for conventional Fe2O3 powder. The unique multilayer structure is thought to play a key role in the remarkably improved photocatalytic performance. Further experiments involving mechanism investigations revealed that instead of high surface area, ·OH plays a crucial role in methylene blue degradation and that O·2- may also contribute effectively to the degradation process. This paper demonstrates a facile and energy-saving route to fabricating homogenous α-Fe2O3 nanodisks with superior photocatalytic activity that is suitable for the treatment of contaminated water and that meets the requirement of mass production.
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Affiliation(s)
- Yang Huang
- Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
| | | | - Minshen Zhu
- Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
| | - Wenjun Meng
- Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
| | - Yan Huang
- Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
| | - Fengxia Geng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jie Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People’s Republic of China
| | - Jing Lin
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People’s Republic of China
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People’s Republic of China
| | - Zhongfang Lei
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
| | - Zhenya Zhang
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
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111
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Li R, Li L, Zi W, Zhang J, Liu L, Zou L, Gan S. Morphology control and multicolor-tunable luminescence of YOF:Ln3+ (Ln = Eu, Tb, Dy, Tm) nano-/microcrystals. NEW J CHEM 2015. [DOI: 10.1039/c4nj01136h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiform YOF nano-/microcrystals have been synthesized and multicolor-tunable luminescence of YOF:Ln3+ (Ln = Eu, Tb, Dy, Tm, Tm/Dy) has been investigated.
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Affiliation(s)
- Ruiqing Li
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Linlin Li
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Wenwen Zi
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Junjun Zhang
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Lu Liu
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Lianchun Zou
- Teaching Center of Basic Courses
- Jilin University
- Changchun 130062
- China
| | - Shucai Gan
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
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112
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Jian M, Liu B, Liu R, Qu J, Wang H, Zhang X. Water-based synthesis of zeolitic imidazolate framework-8 with high morphology level at room temperature. RSC Adv 2015. [DOI: 10.1039/c5ra04033g] [Citation(s) in RCA: 188] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Additive-free synthesis of ZIF-8 with perfect morphology in water at room temperature involves 3 key reactions and 5 evolutional steps.
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Affiliation(s)
- Meipeng Jian
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences (CAS)
- Beijing 100085
- China
| | - Bao Liu
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences (CAS)
- Beijing 100085
- China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences (CAS)
- Beijing 100085
- China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences (CAS)
- Beijing 100085
- China
| | - Huanting Wang
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
| | - Xiwang Zhang
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
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113
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Xiao B, Zhao Q, Xiao C, Yang T, Wang P, Wang F, Chen X, Zhang M. Low-temperature solvothermal synthesis of hierarchical flower-like WO3nanostructures and their sensing properties for H2S. CrystEngComm 2015. [DOI: 10.1039/c5ce00870k] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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114
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Tabib Zadeh Adibi P, Mazzotta F, Antosiewicz TJ, Skoglundh M, Grönbeck H, Langhammer C. In Situ Plasmonic Sensing of Platinum Model Catalyst Sintering on Different Oxide Supports and in O2 and NO2 Atmospheres with Different Concentrations. ACS Catal 2014. [DOI: 10.1021/cs5015173] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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115
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Liu Z, Che R, Elzatahry AA, Zhao D. Direct imaging Au nanoparticle migration inside mesoporous silica channels. ACS NANO 2014; 8:10455-60. [PMID: 25264601 DOI: 10.1021/nn503794v] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Supported metal nanoparticle (NP) catalysts have been widely used in many industry processes and catalytic reactions. Catalyst deactivation is mainly caused by the sintering of supported metal NPs. Hence, understanding the metal NPs' sintering behaviors has great significance in preventing catalyst deactivation. Here we report the metal particle migration inside/between mesochannels by scanning transmission electron microscopy and electron energy loss spectroscopy via an in situ TEM heating technique. A sintering process is proposed that particle migration predominates, driven by the difference of gravitational potential from the height of the uneven internal surface of the mesopores; when the distance of the gold nanoparticles with a size of about 3 and 5 nm becomes short after migration, the coalescence process is completed, which is driven by an "octopus-claw-like" expansion of a conduction electron cloud outside the Au NPs. The supports containing an abundance of micropores help to suppress particle migration and coalescence. Our findings provide the understanding toward the rational design of supported industrial catalysts and other nanocomposites with enhanced activity and stability for applications such as batteries, catalysis, drug delivery, gas sensors, and solar cells.
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Affiliation(s)
- Zhengwang Liu
- Department of Chemistry and Shanghai Key Lab of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and Advanced Materials Laboratory, Fudan University , Shanghai 200433, P.R. China
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116
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Hu KJ, Plant SR, Ellis PR, Brown CM, Bishop PT, Palmer RE. The effects of 1-pentyne hydrogenation on the atomic structures of size-selected AuNand PdN(N = 923 and 2057) nanoclusters. Phys Chem Chem Phys 2014; 16:26631-7. [DOI: 10.1039/c4cp02686a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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117
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Du YE, Feng Q, Chen C, Tanaka Y, Yang X. Photocatalytic and dye-sensitized solar cell performances of {010}-faceted and [111]-faceted anatase TiO₂ nanocrystals synthesized from tetratitanate nanoribbons. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16007-16019. [PMID: 25158319 DOI: 10.1021/am503914q] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The morphology and exposed facet of the anatase-type TiO2 are very important to improve the photocatalytic activity and photovoltaic performance in dye-sensitized solar cells. In this work, we report the synthesis and the photocatalytic and dye-sensitized solar cell performances of anatase-type TiO2 single nanocrystals with exposed {010}- and [111]-facets and with various morphologies by using exfoliated tetratitanate nanoribbons as precursors. The precursor nanoribbons were prepared from the exfoliation of the protonated and, subsequently, tetramethylammonium/H(+) ion-exchanged K2Ti4O9. The colloidal suspension containing the nanoribbons was hydrothermally heated with a microwave-assistance at temperatures from 120 to 190 °C after pH was adjusted to 0.5-14. The dependence of the crystalline phases on temperature and pH indicated that anatase single phase can be obtained at pH 3-13 whereas temperatures higher than 160 °C. The [111]-faceted nanorod-shaped anatase nanocrystals were formed preferentially at pH ≤ 3, whereas the {010}-faceted anatase nanocrystals with morphologies of rhombic, cuboid, and spindle were preferentially at pH ≥5. The morphology observation revealed that the nanoribbons were transformed to anatase nanocrystals mainly by the topotactic structural transformation reaction accompanied by an Ostwald ripening reaction, and pH of the reaction solution took a critical role in the crystal morphology change. At pH ≤1, the mixture of anatase, rutile, and brookite were obtained at higher temperature conditions. The photocatalytic activity and photovoltaic performance were enhanced in an order of surface without a specific facet < [111]-faceted surface < {010}-faceted surface.
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Affiliation(s)
- Yi-en Du
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University , Beijing 100875, China
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118
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Li LX, Xu D, Li XQ, Liu WC, Jia Y. Excellent fluoride removal properties of porous hollow MgO microspheres. NEW J CHEM 2014. [DOI: 10.1039/c4nj01361a] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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119
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Morsbach E, Brauns E, Kowalik T, Lang W, Kunz S, Bäumer M. Ligand-stabilized Pt nanoparticles (NPs) as novel materials for catalytic gas sensing: influence of the ligand on important catalytic properties. Phys Chem Chem Phys 2014; 16:21243-51. [DOI: 10.1039/c4cp02993c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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120
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Zhang B, Shao L, Zhang W, Sun X, Pan X, Su DS. Interaction between Palladium Nanoparticles and Surface-Modified Carbon Nanotubes: Role of Surface Functionalities. ChemCatChem 2014. [DOI: 10.1002/cctc.201402272] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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121
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Legras B, Ordomsky VV, Dujardin C, Virginie M, Khodakov AY. Impact and Detailed Action of Sulfur in Syngas on Methane Synthesis on Ni/γ-Al2O3 Catalyst. ACS Catal 2014. [DOI: 10.1021/cs500436f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benoit Legras
- Unité
de Catalyse et de Chimie
du Solide, UMR CNRS 8181, Université Lille 1-ENSCL-EC Lille, Cité Scientifique, Bâtiment C3, 59655 Villeneuve d’Ascq, France
| | - Vitaly V. Ordomsky
- Unité
de Catalyse et de Chimie
du Solide, UMR CNRS 8181, Université Lille 1-ENSCL-EC Lille, Cité Scientifique, Bâtiment C3, 59655 Villeneuve d’Ascq, France
| | - Christophe Dujardin
- Unité
de Catalyse et de Chimie
du Solide, UMR CNRS 8181, Université Lille 1-ENSCL-EC Lille, Cité Scientifique, Bâtiment C3, 59655 Villeneuve d’Ascq, France
| | - Mirella Virginie
- Unité
de Catalyse et de Chimie
du Solide, UMR CNRS 8181, Université Lille 1-ENSCL-EC Lille, Cité Scientifique, Bâtiment C3, 59655 Villeneuve d’Ascq, France
| | - Andreï Y. Khodakov
- Unité
de Catalyse et de Chimie
du Solide, UMR CNRS 8181, Université Lille 1-ENSCL-EC Lille, Cité Scientifique, Bâtiment C3, 59655 Villeneuve d’Ascq, France
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122
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Munnik P, Velthoen MEZ, de Jongh PE, de Jong KP, Gommes CJ. Nanoparticle growth in supported nickel catalysts during methanation reaction--larger is better. Angew Chem Int Ed Engl 2014; 53:9493-7. [PMID: 25044071 DOI: 10.1002/anie.201404103] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/19/2014] [Indexed: 11/09/2022]
Abstract
A major cause of supported metal catalyst deactivation is particle growth by Ostwald ripening. Nickel catalysts, used in the methanation reaction, may suffer greatly from this through the formation of [Ni(CO)4 ]. By analyzing catalysts with various particle sizes and spatial distributions, the interparticle distance was found to have little effect on the stability, because formation and decomposition of nickel carbonyl rather than diffusion was rate limiting. Small particles (3-4 nm) were found to grow very large (20-200 nm), involving local destruction of the support, which was detrimental to the catalyst stability. However, medium sized particles (8 nm) remained confined by the pores of the support displaying enhanced stability, and an activity 3 times higher than initially small particles after 150 h. Physical modeling suggests that the higher [Ni(CO)4 ] supersaturation in catalysts with smaller particles enabled them to overcome the mechanical resistance of the support. Understanding the interplay of particle size and support properties related to the stability of nanoparticles offers the prospect of novel strategies to develop more stable nanostructured materials, also for applications beyond catalysis.
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Affiliation(s)
- Peter Munnik
- Inorganic Chemistry and Catalysis, Debye institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands)
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123
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Munnik P, Velthoen MEZ, de Jongh PE, de Jong KP, Gommes CJ. Nanoparticle Growth in Supported Nickel Catalysts during Methanation Reaction-Larger is Better. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404103] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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124
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Sehested J, Larsen NW, Falsig H, Hinnemann B. Sintering of nickel steam reforming catalysts: Effective mass diffusion constant for Ni-OH at nickel surfaces. Catal Today 2014. [DOI: 10.1016/j.cattod.2014.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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125
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Morsbach E, Spéder J, Arenz M, Brauns E, Lang W, Kunz S, Bäumer M. Stabilizing catalytically active nanoparticles by ligand linking: toward three-dimensional networks with high catalytic surface area. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5564-73. [PMID: 24761778 DOI: 10.1021/la4049055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A general approach for the linking of Pt nanoparticles (NPs) with bifunctional amine ligands (organic molecules with two amine groups) is presented that allows for the preparation of NP catalysts without inorganic supports and high densities of the catalytically active metal. Advantage was taken of the use of "unprotected" NPs, which enables us to prepare different ligand-functionalized NPs from the same particle batch and thus to relate changes of the resulting material properties exclusively to the influence of the ligand. Three bifunctional ligands with similar functional groups (amines) but different hydrocarbon skeletons were used and compared to monofunctional ligands of similar molecular structures (alkyl and aryl amines) showing significantly different material properties. Monofunctional molecules with minor steric demand cover almost completely the NP surface and lead to two-dimensional assembling of the NPs. In contrast, the use of bifunctional amine ligands leads to the formation of porous, three-dimensional NP networks (ligand-linked NPs) with a high density of ligand free surface atoms, thus enabling for the application as catalytic materials. The stabilizing effect of bifunctional ligands serves as an alternative to the use of inorganic support materials and enables for catalytic applications of ligand-linked NP networks.
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Affiliation(s)
- Eva Morsbach
- IAPC (Institute of Applied and Physical Chemistry), University of Bremen , Leobener Str. NW2, 28359 Bremen, Germany
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126
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Hansen TW, Wagner JB. Catalysts under Controlled Atmospheres in the Transmission Electron Microscope. ACS Catal 2014. [DOI: 10.1021/cs401148d] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Thomas W. Hansen
- Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Jakob B. Wagner
- Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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127
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Liu J, Liu W, Ji S, Wan Y, Gu M, Yin H, Zhou Y. Iron Fluoride Hollow Porous Microspheres: Facile Solution-Phase Synthesis and Their Application for Li-Ion Battery Cathodes. Chemistry 2014; 20:5815-20. [DOI: 10.1002/chem.201304713] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 02/09/2014] [Indexed: 11/12/2022]
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128
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Liu X, Hou W, Yang X, Liang J. Morphology controllable synthesis of NaLa(WO4)2: the morphology dependent photoluminescent properties and single-phased white light emission of NaLa(WO4)2: Eu3+/Tb3+/Tm3+. CrystEngComm 2014. [DOI: 10.1039/c3ce41712c] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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129
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Jinschek JR. Advances in the environmental transmission electron microscope (ETEM) for nanoscale in situ studies of gas–solid interactions. Chem Commun (Camb) 2014; 50:2696-706. [DOI: 10.1039/c3cc49092k] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This review highlights how ETEM technology advances have enabled new essential (structural) information that improve our understanding of nanomaterials' structure–property–function relationships.
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Affiliation(s)
- J. R. Jinschek
- FEI Company
- Materials Science BU
- Eindhoven, The Netherlands
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130
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Shen J, Shi W, Wang J, Gao B, Qiao Z, Huang H, Nie F, Li R, Li Z, Liu Y, Yang G. Facile fabrication of porous CL-20 for low sensitivity high explosives. Phys Chem Chem Phys 2014; 16:23540-3. [DOI: 10.1039/c4cp03224a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile solvent/non-solvent co-crystallization technology is applied to fabricate porous CL-20, which exhibits interesting morphologies and low sensitivity.
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Affiliation(s)
- Jinpeng Shen
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
- Sichuan New Material Research Center
- Mianyang 621000, China
| | - Weimei Shi
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
- Sichuan New Material Research Center
- Mianyang 621000, China
| | - Jun Wang
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
| | - Bing Gao
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials
- Southwest University of Science and Technology
- Mianyang 621010, P. R. China
| | - Zhiqiang Qiao
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
| | - Hui Huang
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
| | - Fude Nie
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
| | - Rui Li
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
- Sichuan New Material Research Center
- Mianyang 621000, China
| | - Zhaoqian Li
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials
- Southwest University of Science and Technology
- Mianyang 621010, P. R. China
| | - Yu Liu
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
| | - Guangcheng Yang
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900, China
- Sichuan New Material Research Center
- Mianyang 621000, China
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131
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Tang Y, He W, Wang S, Tao Z, Cheng L. New insight into the size-controlled synthesis of silver nanoparticles and its superiority in room temperature sintering. CrystEngComm 2014. [DOI: 10.1039/c3ce42439a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver nanoparticles with a controlled size present a high conductivity after room temperature sintering achieved by a chemical process.
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Affiliation(s)
- Yao Tang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu, PR China
| | - Wei He
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu, PR China
| | - Shouxu Wang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu, PR China
| | - Zhihua Tao
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu, PR China
| | - Lijuan Cheng
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu, PR China
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132
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Liu Q, Joshi UA, Über K, Regalbuto JR. The control of Pt and Ru nanoparticle size on high surface area supports. Phys Chem Chem Phys 2014; 16:26431-5. [DOI: 10.1039/c4cp02714k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supported Ru and Pt nanoparticles were synthesized by the method of strong electrostatic adsorption and subsequently treated to achieve a series of catalysts with particle sizes ranging from 1 to 8 nm. This methodology allows the control of particle size applicable to high surface area supports with common metal precursors.
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Affiliation(s)
- Qiuli Liu
- Department of Chemical Engineering
- University of South Carolina
- Columbia, USA
| | - Upendra A. Joshi
- Department of Chemical Engineering
- University of South Carolina
- Columbia, USA
| | - Kevin Über
- Department of Chemical Engineering
- University of South Carolina
- Columbia, USA
| | - John R. Regalbuto
- Department of Chemical Engineering
- University of South Carolina
- Columbia, USA
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133
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DeLaRiva AT, Hansen TW, Challa SR, Datye AK. In situ Transmission Electron Microscopy of catalyst sintering. J Catal 2013. [DOI: 10.1016/j.jcat.2013.08.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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134
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Lu P, Campbell CT, Xia Y. A sinter-resistant catalytic system fabricated by maneuvering the selectivity of SiO2 deposition onto the TiO2 surface versus the Pt nanoparticle surface. NANO LETTERS 2013; 13:4957-62. [PMID: 24000792 DOI: 10.1021/nl4029973] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A triphasic catalytic system (Pt/TiO2-SiO2) with an "islands in the sea" configuration was fabricated by controlling the selectivity of SiO2 deposition onto the surface of TiO2 versus the surface of Pt nanoparticles. The Pt surface was exposed, while the nanoparticles were supported on TiO2 and isolated from each other by SiO2 to achieve both significantly improved sinter resistance up to 700 °C and outstanding activity after high-temperature calcination. This work not only demonstrates the feasibility of using a new triphasic system with uncovered catalyst to maximize the thermal stability and catalytic activity but also offers a general approach to the synthesis of high-performance catalytic systems with tunable compositions.
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Affiliation(s)
- Ping Lu
- The Wallace H. Coulter Department of Biomedical Engineering, School of Chemistry and Biochemistry, and School of Chemical and Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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135
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Liu X, Hou W, Yang X, Shen Q. Pure-phase La2(WO4)3:Eu3+ nanocrystals and spindle-like NaLa(WO4)2:Yb3+/Er3+ nano/microcrystals: selective synthesis, morphologies and photoluminescent properties. Dalton Trans 2013; 42:11445-54. [PMID: 23824277 DOI: 10.1039/c3dt50562f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective synthesis of pure-phase La2(WO4)3 nanocrystals and uniform spindle-like NaLa(WO4)2 nano/microcrystals with tunable size based on one reaction system has been reported for the first time. The sodium ion is crucial for the selective synthesis of La2(WO4)3 and NaLa(WO4)2. An additional hydrothermal treatment has a great effect on the morphology of La2(WO4)3, while the hydrothermal temperature and time, and the amount of glycerine, significantly influence the morphology and size of NaLa(WO4)2. Based on the time-dependent experiments, it is proposed that the Ostwald ripening is the formation mechanism of the spindle-like NaLa(WO4)2. The resultant La2(WO4)3:Er(3+) nanocrystals can emit a bright red color with a high purity under the excitation of 467 nm (blue region) and, more importantly, it can be easily dispersed in distilled water. The up-conversion emission intensity of NaLa(WO4)2:Yb(3+)/Er(3+) is increased rapidly with the Yb(3+) concentration under 980 nm laser excitation, suggesting the efficient energy transfer from Yb(3+) to Er(3+). Moreover, the emission color can be tuned from chartreuse to green by increasing the Yb(3+) concentration. These unique properties of La2(WO4)3 and NaLa(WO4)2 are closely related with their distinctive crystal structures, and it is anticipated that the findings in this work may give an insight into the fabrication and application of the rare earth tungstates.
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Affiliation(s)
- Xiaolin Liu
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P R China
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136
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Hansen TW, DeLaRiva AT, Challa SR, Datye AK. Sintering of catalytic nanoparticles: particle migration or Ostwald ripening? Acc Chem Res 2013; 46:1720-30. [PMID: 23634641 DOI: 10.1021/ar3002427] [Citation(s) in RCA: 521] [Impact Index Per Article: 47.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal nanoparticles contain the active sites in heterogeneous catalysts, which are important for many industrial applications including the production of clean fuels, chemicals and pharmaceuticals, and the cleanup of exhaust from automobiles and stationary power plants. Sintering, or thermal deactivation, is an important mechanism for the loss of catalyst activity. This is especially true for high temperature catalytic processes, such as steam reforming, automotive exhaust treatment, or catalytic combustion. With dwindling supplies of precious metals and increasing demand, fundamental understanding of catalyst sintering is very important for achieving clean energy and a clean environment, and for efficient chemical conversion processes with atom selectivity. Scientists have proposed two mechanisms for sintering of nanoparticles: particle migration and coalescence (PMC) and Ostwald ripening (OR). PMC involves the mobility of particles in a Brownian-like motion on the support surface, with subsequent coalescence leading to nanoparticle growth. In contrast, OR involves the migration of adatoms or mobile molecular species, driven by differences in free energy and local adatom concentrations on the support surface. In this Account, we divide the process of sintering into three phases. Phase I involves rapid loss in catalyst activity (or surface area), phase II is where sintering slows down, and phase III is where the catalyst may reach a stable performance. Much of the previous work is based on inferences from catalysts that were observed before and after long term treatments. While the general phenomena can be captured correctly, the mechanisms cannot be determined. Advancements in the techniques of in situ TEM allow us to observe catalysts at elevated temperatures under working conditions. We review recent evidence obtained via in situ methods to determine the relative importance of PMC and OR in each of these phases of catalyst sintering. The evidence suggests that, in phase I, OR is responsible for the rapid loss of activity that occurs when particles are very small. Surprisingly, very little PMC is observed in this phase. Instead, the rapid loss of activity is caused by the disappearance of the smallest particles. These findings are in good agreement with representative atomistic simulations of sintering. In phase II, sintering slows down since the smallest particles have disappeared. We now see a combination of PMC and OR, but do not fully understand the relative contribution of each of these processes to the overall rates of sintering. In phase III, the particles have grown large and other parasitic phenomena, such as support restructuring, can become important, especially at high temperatures. Examining the evolution of particle size and surface area with time, we do not see a stable or equilibrium state, especially for catalysts operating at elevated temperatures. In conclusion, the recent literature, especially on in situ studies, shows that OR is the dominant process causing the growth of nanoparticle size. Consequently, this leads to the loss of surface area and activity. While particle migration could be controlled through suitable structuring of catalyst supports, it is more difficult to control the mobility of atomically dispersed species. These insights into the mechanisms of sintering could help to develop sinter-resistant catalysts, with the ultimate goal of designing catalysts that are self-healing.
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Affiliation(s)
- Thomas W. Hansen
- Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Andrew T. DeLaRiva
- Department of Chemical & Nuclear Engineering and Center for Microengineered Materials, MSC 01 1120, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Sivakumar R. Challa
- Department of Chemical & Nuclear Engineering and Center for Microengineered Materials, MSC 01 1120, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Abhaya K. Datye
- Department of Chemical & Nuclear Engineering and Center for Microengineered Materials, MSC 01 1120, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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137
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Parkinson GS, Novotny Z, Argentero G, Schmid M, Pavelec J, Kosak R, Blaha P, Diebold U. Carbon monoxide-induced adatom sintering in a Pd-Fe3O4 model catalyst. NATURE MATERIALS 2013; 12:724-728. [PMID: 23749267 DOI: 10.1038/nmat3667] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 04/18/2013] [Indexed: 06/02/2023]
Abstract
The coarsening of catalytically active metal clusters is often accelerated by the presence of gases, but the role played by gas molecules is difficult to ascertain and varies from system to system. We use scanning tunnelling microscopy to follow the CO-induced coalescence of Pd adatoms supported on the Fe3O4(001) surface at room temperature, and find Pd-carbonyl species to be responsible for mobility in this system. Once these reach a critical density, clusters nucleate; subsequent coarsening occurs through cluster diffusion and coalescence. Whereas CO induces the mobility in the Pd/Fe3O4 system, surface hydroxyls have the opposite effect. Pd atoms transported to surface OH groups are no longer susceptible to carbonyl formation and remain isolated. Following the evolution from well-dispersed metal adatoms into clusters, atom-by-atom, allows identification of the key processes that underlie gas-induced mass transport.
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Affiliation(s)
- Gareth S Parkinson
- Institute of Applied Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/134, 1040 Vienna, Austria.
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138
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Gan L, Rudi S, Cui C, Strasser P. Ni-Catalyzed Growth of Graphene Layers during Thermal Annealing: Implications for the Synthesis of Carbon-Supported PtNi Fuel-Cell Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201300235] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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139
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Prieto G, Meeldijk JD, de Jong KP, de Jongh PE. Interplay between pore size and nanoparticle spatial distribution: Consequences for the stability of CuZn/SiO2 methanol synthesis catalysts. J Catal 2013. [DOI: 10.1016/j.jcat.2013.02.023] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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140
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Thomas JM, Ducati C, Leary R, Midgley PA. Some Turning Points in the Chemical Electron Microscopic Study of Heterogeneous Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201200883] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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141
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Du X, Zhang D, Shi L, Gao R, Zhang J. Coke- and sintering-resistant monolithic catalysts derived from in situ supported hydrotalcite-like films on Al wires for dry reforming of methane. NANOSCALE 2013; 5:2659-2663. [PMID: 23463343 DOI: 10.1039/c3nr33921a] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Monolithic catalysts derived from in situ supported hydrotalcite-like films on Al wires display high resistance to coke formation and sintering in the dry reforming of methane due to their hierarchical porous structure, well dispersed metallic nickel species, more basic sites and strong metal-support interaction effect.
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Affiliation(s)
- Xianjun Du
- Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444, China
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142
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Ouyang R, Liu JX, Li WX. Atomistic Theory of Ostwald Ripening and Disintegration of Supported Metal Particles under Reaction Conditions. J Am Chem Soc 2013; 135:1760-71. [DOI: 10.1021/ja3087054] [Citation(s) in RCA: 295] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Runhai Ouyang
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
Dalian 116023, China
| | - Jin-Xun Liu
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
Dalian 116023, China
| | - Wei-Xue Li
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
Dalian 116023, China
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143
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Prieto G, Zečević J, Friedrich H, de Jong KP, de Jongh PE. Towards stable catalysts by controlling collective properties of supported metal nanoparticles. NATURE MATERIALS 2013; 12:34-9. [PMID: 23142841 DOI: 10.1038/nmat3471] [Citation(s) in RCA: 384] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 09/24/2012] [Indexed: 05/04/2023]
Abstract
Supported metal nanoparticles play a pivotal role in areas such as nanoelectronics, energy storage/conversion and as catalysts for the sustainable production of fuels and chemicals. However, the tendency of nanoparticles to grow into larger crystallites is an impediment for stable performance. Exemplarily, loss of active surface area by metal particle growth is a major cause of deactivation for supported catalysts. In specific cases particle growth might be mitigated by tuning the properties of individual nanoparticles, such as size, composition and interaction with the support. Here we present an alternative strategy based on control over collective properties, revealing the pronounced impact of the three-dimensional nanospatial distribution of metal particles on catalyst stability. We employ silica-supported copper nanoparticles as catalysts for methanol synthesis as a showcase. Achieving near-maximum interparticle spacings, as accessed quantitatively by electron tomography, slows down deactivation up to an order of magnitude compared with a catalyst with a non-uniform nanoparticle distribution, or a reference Cu/ZnO/Al(2)O(3) catalyst. Our approach paves the way towards the rational design of practically relevant catalysts and other nanomaterials with enhanced stability and functionality, for applications such as sensors, gas storage, batteries and solar fuel production.
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Affiliation(s)
- Gonzalo Prieto
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, NL-3584 CG Utrecht University, The Netherlands
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144
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Benavidez AD, Kovarik L, Genc A, Agrawal N, Larsson EM, Hansen TW, Karim AM, Datye AK. Environmental Transmission Electron Microscopy Study of the Origins of Anomalous Particle Size Distributions in Supported Metal Catalysts. ACS Catal 2012. [DOI: 10.1021/cs3005117] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Angelica D. Benavidez
- Department of Chemical & Nuclear Engineering and Center for Microengineered Materials, MSC 01 1120, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | | | - Arda Genc
- FEI Company, USA NanoPort, 5350 NE Dawson Creek Drive, Hillsboro, Oregon
97124, United States
| | | | - Elin M. Larsson
- Division
of Chemical Physics,
Department of Applied Physics, and Competence Center for Catalysis, Chalmers University of Technology, 412 96 Göteborg,
Sweden
| | - Thomas W. Hansen
- Center for Electron
Nanoscopy, Technical University of Denmark, DK-2800 Kgs. Lyngby,
Denmark
| | | | - Abhaya K. Datye
- Department of Chemical & Nuclear Engineering and Center for Microengineered Materials, MSC 01 1120, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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145
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Hansen TW, Wagner JB. Environmental transmission electron microscopy in an aberration-corrected environment. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2012; 18:684-690. [PMID: 22691205 DOI: 10.1017/s1431927612000293] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The increasing use of environmental transmission electron microscopy (ETEM) in materials science provides exciting new possibilities for investigating chemical reactions and understanding both the interaction of fast electrons with gas molecules and the effect of the presence of gas on high-resolution imaging. A gaseous atmosphere in the pole-piece gap of the objective lens of the microscope alters both the incoming electron wave prior to interaction with the sample and the outgoing wave below the sample. Whereas conventional TEM samples are usually thin (below 100 nm), the gas in the environmental cell fills the entire gap between the pole pieces and is thus not spatially localized. By using an FEI Titan environmental transmission electron microscope equipped with a monochromator and an aberration corrector on the objective lens, we have investigated the effects on imaging and spectroscopy caused by the presence of the gas.
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Affiliation(s)
- Thomas W Hansen
- Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.
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146
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Wang Y, Liu J, Tran HD, Mecklenburg M, Guan XN, Stieg AZ, Regan BC, Martin DC, Kaner RB. Morphological and Dimensional Control via Hierarchical Assembly of Doped Oligoaniline Single Crystals. J Am Chem Soc 2012; 134:9251-62. [DOI: 10.1021/ja301061a] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yue Wang
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1969, United States
| | - Jinglin Liu
- Department of Materials Science
and Engineering, University of Delaware, Newark, Delaware 19716-1501, United States
| | - Henry D. Tran
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1969, United States
| | - Matthew Mecklenburg
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547,
United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
| | - Xin N. Guan
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1969, United States
| | - Adam Z. Stieg
- California NanoSystems Institute, Los Angeles, California 90095, United States
- WPI Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba,
Ibaraki 305-0040, Japan
| | - B. C. Regan
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547,
United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
| | - David C. Martin
- Department of Materials Science
and Engineering, University of Delaware, Newark, Delaware 19716-1501, United States
| | - Richard B. Kaner
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1969, United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
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147
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