Unveiling the Stability of Encapsulated Pt Catalysts Using Nanocrystals and Atomic Layer Deposition

被引:5
|
作者
Liccardo, Gennaro [1 ,2 ,3 ]
Cendejas, Melissa C. [4 ]
Mandal, Shyama C. [1 ,2 ,3 ]
Stone, Michael L. [1 ,2 ]
Porter, Stephen [5 ]
Nhan, Bang T. [6 ]
Kumar, Abinash [7 ]
Smith, Jacob [7 ,8 ]
Plessow, Philipp N. [9 ]
Cegelski, Lynette [6 ]
Osio-Norgaard, Jorge [1 ,2 ]
Abild-Pedersen, Frank [3 ]
Chi, Miaofang [7 ,10 ]
Datye, Abhaya K. [5 ]
Bent, Stacey F. [1 ,2 ,11 ]
Cargnello, Matteo [1 ,2 ,3 ]
机构
[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA
[2] Stanford Univ, SUNCAT Ctr Interface Sci & Catalysis, Stanford, CA 94305 USA
[3] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[4] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA
[5] Univ New Mexico, Dept Chem & Biol Engn, Albuquerque, NM 87131 USA
[6] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[7] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA
[8] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
[9] Karlsruhe Inst Technol, Inst Catalysis Res & Technol, D-76344 Eggenstein Leopoldshafen, Germany
[10] Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA
[11] Stanford Univ, Dept Energy Sci & Engn, Stanford, CA 94305 USA
基金
美国国家科学基金会;
关键词
TOTAL-ENERGY CALCULATIONS; WATER-GAS SHIFT; PLATINUM; CERIA; NANOPARTICLES; OXIDATION; TEMPERATURE; PARTICLES; METALS; SITE;
D O I
10.1021/jacs.4c06423
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Platinum exhibits desirable catalytic properties, but it is scarce and expensive. Optimizing its use in key applications such as emission control catalysis is important to reduce our reliance on such a rare element. Supported Pt nanoparticles (NPs) used in emission control systems deactivate over time because of particle growth in sintering processes. In this work, we shed light on the stability against sintering of Pt NPs supported on and encapsulated in Al2O3 using a combination of nanocrystal catalysts and atomic layer deposition (ALD) techniques. We find that small amounts of alumina overlayers created by ALD on preformed Pt NPs can stabilize supported Pt catalysts, significantly reducing deactivation caused by sintering, as previously observed by others. Combining theoretical and experimental insights, we correlate this behavior to the decreased propensity of oxidized Pt species to undergo Ostwald ripening phenomena because of the physical barrier imposed by the alumina overlayers. Furthermore, we find that highly stable catalysts can present an abundance of under-coordinated Pt sites after restructuring of both Pt particles and alumina overlayers at a high temperature (800 degrees C) in C3H6 oxidation conditions. The enhanced stability significantly improves the Pt utilization efficiency after accelerated aging treatments, with encapsulated Pt catalysts reaching reaction rates more than two times greater than those of a control supported Pt catalyst.
引用
收藏
页码:23909 / 23922
页数:14
相关论文
共 50 条
  • [21] Carbon nanotube forests growth using catalysts from atomic layer deposition
    Chen, Bingan
    Zhang, Can
    Esconjauregui, Santiago
    Xie, Rongsi
    Zhong, Guofang
    Bhardwaj, Sunil
    Cepek, Cinzia
    Robertson, John
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (14)
  • [22] Scalable synthesis of supported catalysts using fluidized bed atomic layer deposition
    Lu, Zheng
    Yanguas-Gil, Angel
    Kang, Donghyeon
    Darapaneni, Pragathi
    Mane, Anil U.
    Marshall, Christopher L.
    Elam, Jeffrey W.
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2022, 40 (04):
  • [23] Carbon nanotube forests growth using catalysts from atomic layer deposition
    20141817647754
    1600, American Institute of Physics Inc. (115):
  • [24] Atomic Layer-by-Layer Deposition of Pt on Pd Nanocubes for Catalysts with Enhanced Activity and Durability toward Oxygen Reduction
    Xie, Shuifen
    Choi, Sang-Il
    Lu, Ning
    Roling, Luke T.
    Herron, Jeffrey A.
    Zhang, Lei
    Park, Jinho
    Wang, Jinguo
    Kim, Moon J.
    Xie, Zhaoxiong
    Mavrikakis, Manos
    Xia, Younan
    NANO LETTERS, 2014, 14 (06) : 3570 - 3576
  • [25] In Situ Engineering of a Metal Oxide Protective Layer into Pt/Carbon Fuel-Cell Catalysts by Atomic Layer Deposition
    Lee, Woo-Jae
    Bera, Susanta
    Woo, Hyunjae
    Kim, Hyun Gu
    Baek, Ji-Hu
    Hong, Woongpyo
    Park, Jung-Yeon
    Oh, Seung-Jeong
    Kwon, Se-Hun
    Chemistry of Materials, 2022, 34 (13) : 5949 - 5959
  • [26] In Situ Engineering of a Metal Oxide Protective Layer into Pt/Carbon Fuel-Cell Catalysts by Atomic Layer Deposition
    Lee, Woo Jae
    Bera, Susanta
    Woo, HyunJae
    Kim, Hyun Gu
    Baek, Ji-Hu
    Hong, Woongpyo
    Park, Jung-Yeon
    Oh, Seung-Jeong
    Kwon, Se-Hun
    CHEMISTRY OF MATERIALS, 2022, : 5949 - 5959
  • [27] Enhanced stability of Pt/C by the atomic layer deposition of porous MOx for the decarboxylation of oleic acid
    Lin, Wenwen
    Chen, Hao
    Li, Jing
    Chen, Kequan
    Lu, Xiuyang
    Ouyang, Pingkai
    Fu, Jie
    CATALYSIS COMMUNICATIONS, 2019, 123 : 59 - 63
  • [28] Interface Tailoring of Heterogeneous Catalysts by Atomic Layer Deposition
    Zhang, Bin
    Qin, Yong
    ACS CATALYSIS, 2018, 8 (11): : 10064 - 10081
  • [29] Synthesis of supported Ni catalysts by atomic layer deposition
    Gould, Troy D.
    Lubers, Alia M.
    Neltner, Brian T.
    Carrier, Jacob V.
    Weimer, Alan W.
    Falconer, John L.
    Medlin, J. Will
    JOURNAL OF CATALYSIS, 2013, 303 : 9 - 15
  • [30] Atomic layer deposition of TiO2 for stabilization of Pt nanoparticle oxygen reduction reaction catalysts
    W. Wilson McNeary
    Audrey E. Linico
    Chilan Ngo
    Sarah van Rooij
    Sophia Haussener
    Megan E. Maguire
    Svitlana Pylypenko
    Alan W. Weimer
    Journal of Applied Electrochemistry, 2018, 48 : 973 - 984