1
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Spurio E, Pelatti S, D'Addato S, Luches P. Plasmonic properties and stability of Au and Cu nanoparticles embedded in cerium oxide. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:375003. [PMID: 38857601 DOI: 10.1088/1361-648x/ad5633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 06/10/2024] [Indexed: 06/12/2024]
Abstract
With the aim of sensitizing cerium oxide-a very important catalytic material-to visible light, its coupling with Au and Cu nanoparticles is investigated. The samples are grown by physical synthesis by embedding a layer of nanoparticles between two cerium oxide films. The films are controlled in composition byin-situx-ray photoemission spectroscopy and in morphology byex-situscanning electron microscopy. The optical properties as a function of the oxide thickness, investigated by spectrophotometry in the UV-Vis range, are interpreted based on the results of the morphological characterization and of simulations based on the Maxwell Garnett model. The stability of chemical and optical properties after air exposure is also investigated. The results, indicating that stable materials with tuneable optical properties can be obtained, are important in view of the potential application of the investigated systems in photocatalysis.
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Affiliation(s)
- Eleonora Spurio
- Dipartimento FIM, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
- Istituto Nanoscienze, CNR (NANO-CNR), Modena, Italy
| | - Samuele Pelatti
- Dipartimento FIM, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
- Istituto Nanoscienze, CNR (NANO-CNR), Modena, Italy
| | - Sergio D'Addato
- Dipartimento FIM, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
- Istituto Nanoscienze, CNR (NANO-CNR), Modena, Italy
| | - Paola Luches
- Istituto Nanoscienze, CNR (NANO-CNR), Modena, Italy
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2
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Peng W, Lu YR, Lin H, Peng M, Chan TS, Pan A, Tan Y. Sulfur-Stabilizing Ultrafine High-Entropy Alloy Nanoparticles on MXene for Highly Efficient Ethanol Electrooxidation. ACS NANO 2023; 17:22691-22700. [PMID: 37926947 DOI: 10.1021/acsnano.3c07110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
High-entropy alloys (HEAs) are significantly promising candidates for heterogeneous catalysis, yet the controllable synthesis of ultrafine HEA nanoparticles (NPs) remains a formidable challenge due to severe thermal sintering during the high-temperature fabrication process. Herein, we report a sulfur-stabilizing strategy to construct ultrafine HEA NPs with an average diameter of 4.02 nm supported on sulfur-modified Ti3C2Tx (S-Ti3C2Tx) MXene, on which the strong interfacial metal-sulfur interactions between HEA NPs and the S-Ti3C2Tx supports significantly increase the interfacial adhesion strength, thus greatly suppressing nanoparticle sintering by retarding both particle migration and metal atom diffusion. The representative quinary PtPdCuNiCo HEA-S-Ti3C2Tx exhibits excellent catalytic performance toward alkaline ethanol oxidation reaction (EOR) with an ultrahigh mass activity of 7.03 A mgPt+Pd-1, which is 4.34 and 5.17 times higher than those of the commercial Pt/C and Pd/C catalysts, respectively. In situ attenuated total reflection-infrared spectroscopy studies reveal that the high intrinsic catalytic activity for the EOR can be ascribed to the synergy of different catalytically active sites of HEA NPs and the well-designed interfacial metal-sulfur interactions.
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Affiliation(s)
- Wei Peng
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Ying-Rui Lu
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Haiping Lin
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Ming Peng
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Anlian Pan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Yongwen Tan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
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3
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Chih YK, You JL, Lin WH, Chang YH, Tseng CC, Ger MD. A Novel Method for the Fabrication of Antibacterial Stainless Steel with Uniform Silver Dispersions by Silver Nanoparticle/Polyethyleneimine Composites. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103719. [PMID: 37241346 DOI: 10.3390/ma16103719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/10/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Only a few studies have so far focused on the addition of silver to SS316L alloys by conventional sintering methods. Unfortunately, the metallurgical process of silver-containing antimicrobial SS is greatly limited due to the extremely low solubility of silver in iron and its tendency to precipitate at the grain boundaries, resulting in an inhomogeneous distribution of the antimicrobial phase and loss of antimicrobial properties. In this work, we present a novel approach to fabricate antibacterial stainless steel 316L by functional polyethyleneimine-glutaraldehyde copolymer (PEI-co-GA/Ag catalyst) composites. PEI is a highly branched cationic polymer, which makes it exhibit very good adhesion on the surface of the substrate. Unlike the effect of the conventional silver mirror reaction, the introduction of functional polymers can effectively improve the adhesion and distribution of Ag particles on the surface of 316LSS. It can be seen from the SEM images that a large number of silver particles are retained and well dispersed in 316LSS after sintering. PEI-co-GA/Ag 316LSS exhibits excellent antimicrobial properties and does not release free silver ions to affect the surrounding environment. Furthermore, the probable mechanism for the influence of the functional composites on the enhancement of adhesion is also proposed. The formation of a large number of hydrogen bonds and van der Waals forces, as well as the negative zeta potential of the 316LSS surface, can effectively enable the formation of a tight attraction between the Cu layer and the surface of 316LSS. These results meet our expectations of designing passive antimicrobial properties on the contact surface of medical devices.
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Affiliation(s)
- Yu-Kun Chih
- Graduate School of Defense Science, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan
| | - Jhu-Lin You
- Department of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan
- System Engineering and Technology Program, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Wei-Hsuan Lin
- Department of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan
| | - Yen-Hao Chang
- Combination Medical Device Technology Division, Medical Devices and Opto-Electronics Equipment Department, Metal Industries Research & Development Centre, Kaohsiung 821, Taiwan
| | - Chun-Chieh Tseng
- Combination Medical Device Technology Division, Medical Devices and Opto-Electronics Equipment Department, Metal Industries Research & Development Centre, Kaohsiung 821, Taiwan
| | - Ming-Der Ger
- Department of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan
- System Engineering and Technology Program, National Chiao Tung University, Hsinchu 300, Taiwan
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4
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Insights into the Role of Sensitive Surface Lattice Oxygen Species on Promoting Methane Conversion. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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5
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Liu Y, Zong X, Patra A, Caratzoulas S, Vlachos DG. Propane Dehydrogenation on Pt xSn y ( x, y ≤ 4) Clusters on Al 2O 3(110). ACS Catal 2023. [DOI: 10.1021/acscatal.2c05671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Yilang Liu
- RAPID Manufacturing Institute, Catalysis Center for Energy Innovation, Delaware Energy Institute, Center for Plastics Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Xue Zong
- RAPID Manufacturing Institute, Catalysis Center for Energy Innovation, Delaware Energy Institute, Center for Plastics Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St., Newark, Delaware 19716, United States
| | - Abhirup Patra
- RAPID Manufacturing Institute, Catalysis Center for Energy Innovation, Delaware Energy Institute, Center for Plastics Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Stavros Caratzoulas
- RAPID Manufacturing Institute, Catalysis Center for Energy Innovation, Delaware Energy Institute, Center for Plastics Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Dionisios G. Vlachos
- RAPID Manufacturing Institute, Catalysis Center for Energy Innovation, Delaware Energy Institute, Center for Plastics Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St., Newark, Delaware 19716, United States
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6
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Zhao K, Janulaitis N, Rumptz JR, Campbell CT. Size-Dependent Energy and Adhesion of Pd Nanoparticles on Graphene on Ni(111) by Pd Vapor Adsorption Calorimetry. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Kun Zhao
- Department of Chemistry, University of Washington, Seattle, Washington98105-1700, United States
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi980-8577, Japan
| | - Nida Janulaitis
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
| | - John R. Rumptz
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington98105-1700, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
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7
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Liu JC, Luo L, Xiao H, Zhu J, He Y, Li J. Metal Affinity of Support Dictates Sintering of Gold Catalysts. J Am Chem Soc 2022; 144:20601-20609. [DOI: 10.1021/jacs.2c06785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jin-Cheng Liu
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
| | - Langli Luo
- Institute of Molecular Plus, Department of Chemistry, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Hai Xiao
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology China, Hefei, Anhui 230029, China
| | - Yang He
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jun Li
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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8
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De Bellis J, Petersen H, Ternieden J, Pfänder N, Weidenthaler C, Schüth F. Direct Dry Synthesis of Supported Bimetallic Catalysts: A Study on Comminution and Alloying of Metal Nanoparticles. Angew Chem Int Ed Engl 2022; 61:e202208016. [PMID: 35972468 PMCID: PMC9804192 DOI: 10.1002/anie.202208016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 01/05/2023]
Abstract
Ball milling is growing increasingly important as an alternative synthetic tool to prepare catalytic materials. It was recently observed that supported metal catalysts could be directly obtained upon ball milling from the coarse powders of metal and oxide support. Moreover, when two compatible metal sources are simultaneously subjected to the mechanochemical treatment, bimetallic nanoparticles are obtained. A systematic investigation was extended to different metals and supports to understand better the mechanisms involved in the comminution and alloying of metal nanoparticles. Based on this, a model describing the role of metal-support interactions in the synthesis was developed. The findings will be helpful for the future rational design of supported metal catalysts via dry ball milling.
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Affiliation(s)
- Jacopo De Bellis
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Hilke Petersen
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Jan Ternieden
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Norbert Pfänder
- Department of Heterogeneous ReactionsMax-Planck-Institut für Chemische EnergiekonversionStiftstraße 34–3645470Mülheim an der RuhrGermany
| | - Claudia Weidenthaler
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Ferdi Schüth
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
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9
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Rumptz JR, Zhao K, Mayo J, Campbell CT. Size-Dependent Energy of Ni Nanoparticles on Graphene Films on Ni(111) and Adhesion Energetics by Adsorption Calorimetry. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John R. Rumptz
- Department of Chemical Engineering, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Kun Zhao
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Jackson Mayo
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Charles T. Campbell
- Department of Chemical Engineering, and University of Washington, Seattle, Washington 98105-1700, United States
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
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10
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Rudakemwa H, Kim KJ, Park TE, Son H, Na J, Kwon SJ. Observation and Analysis of Staircase Response of Single Palladium Nanoparticle Collision on Gold Ultramicroelectrodes. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12183095. [PMID: 36144883 PMCID: PMC9500959 DOI: 10.3390/nano12183095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/26/2022] [Accepted: 09/05/2022] [Indexed: 05/14/2023]
Abstract
Collision (or impact) of single palladium nanoparticles (Pd NPs) on gold (Au), copper (Cu), nickel (Ni), and platinum (Pt) ultramicroelectrodes (UMEs) were investigated via electrocatalytic amplification method. Unlike the blip responses of previous Pd NP collision studies, the staircase current response was obtained with the Au UME. The current response, including collision frequency and peak magnitude, was analyzed depending on the material of the UME and the applied potential. Adsorption factors implying the interaction between the Pd NP and the UMEs are suggested based on the experimental results.
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11
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12
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De Bellis J, Petersen H, Ternieden J, Pfänder N, Weidenthaler C, Schüth F. Direct Dry Synthesis of Supported Bimetallic Catalysts: A Study on Comminution and Alloying of Metal Nanoparticles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jacopo De Bellis
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
| | - Hilke Petersen
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
| | - Jan Ternieden
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
| | - Norbert Pfänder
- Max-Planck-Institute for Chemical Energy Conversion: Max-Planck-Institut fur chemische Energiekonversion Department of Heterogeneous Reactions Stiftstrasse 34-36 NRW Mülheim an der Ruhr GERMANY
| | - Claudia Weidenthaler
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
| | - Ferdi Schüth
- Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim GERMANY
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13
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Baker A, Vishnubhotla SB, Chen R, Martini A, Jacobs TDB. Origin of Pressure-Dependent Adhesion in Nanoscale Contacts. NANO LETTERS 2022; 22:5954-5960. [PMID: 35793499 PMCID: PMC9335865 DOI: 10.1021/acs.nanolett.2c02016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The adhesion between nanoscale components has been shown to increase with applied load, contradicting well-established mechanics models. Here, we use in situ transmission electron microscopy and atomistic simulations to reveal the underlying mechanism for this increase as a change in the mode of separation. Analyzing 135 nanoscale adhesion tests on technologically relevant materials of anatase TiO2, silicon, and diamond, we demonstrate a transition from fracture-controlled to strength-controlled separation. When fracture models are incorrectly applied, they yield a 7-fold increase in apparent work of adhesion; however, we show that the true work of adhesion is unchanged with loading. Instead, the nanoscale adhesion is governed by the product of adhesive strength and contact area; the pressure dependence of adhesion arises because contact area increases with applied load. By revealing the mechanism of separation for loaded nanoscale contacts, these findings provide guidance for tailoring adhesion in applications from nanoprobe-based manufacturing to nanoparticle catalysts.
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Affiliation(s)
- Andrew
J. Baker
- Department
of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, United States
| | - Sai Bharadwaj Vishnubhotla
- Department
of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, United States
| | - Rimei Chen
- Department
of Mechanical Engineering, University of
California-Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Ashlie Martini
- Department
of Mechanical Engineering, University of
California-Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Tevis D. B. Jacobs
- Department
of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, United States
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14
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Mejía-López J, Velásquez EA, Mazo-Zuluaga J. Low-energy configurations of Pt 6Cu 6 clusters and their physical-chemical characterization: a high-accuracy DFT study. Phys Chem Chem Phys 2022; 24:16011-16020. [PMID: 35730739 DOI: 10.1039/d2cp01614a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on a combination of many-body potentials, an analysis of the inertia tensors and a Density Functional Theory framework, we use a method to harvest the lowest energy states of any set of cluster systems. Then, this methodology is applied to the Pt6Cu6 cluster case and the structural, chemical, electronic, anisotropy, magnetic and vibrational properties of the lowest energy isomers are studied. Unexpectedly, some tens of isomers with much lower energy than the precedent believed ground state [J. Chem. Phys., 131(4):044701] are found, which indicates the goodness of this methodology. Some of the isomers obtained present the point groups Cs, C2v according to Schoenflies notation, while others do not exhibit specific symmetry operations. The global chemical descriptors as the ionization potential, the electron affinity and the chemical hardness have oscillating behaviors with overall decreasing trends as the energy of the isomer grows up, indicating a higher rate of deactivation by sintering processes and a higher strength of the adsorption of small molecules on these systems. We present interesting results of the electronic, magnetic, anisotropy, vibrational and thermal properties of these clusters and discuss them; what can be useful information for future experiments and technical applications in varied fields as catalysis, spintronics, molecular magnetism or magnetic storage information.
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Affiliation(s)
- J Mejía-López
- Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Facultad de Física, Pontificia Universidad Católica de Chile, CEDENNA, Santiago, Chile.,Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, Riobamba, Ecuador
| | - E A Velásquez
- Grupo Matbiom, Facultad de Ciencias Básicas, Universidad de Medellín, Cra. 87 30-65, Medellín, Colombia.
| | - J Mazo-Zuluaga
- Grupo de Instrumentación Científica y Microelectrónica, Grupo de Estado Sólido, IF-FCEN, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
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15
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Prabhu AM, Choksi TS. Data-driven methods to predict the stability metrics of catalytic nanoparticles. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2022.100797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Liu CY, Ye S, Li M, Senftle TP. A Rapid Feature Selection Method for Catalyst Design: Iterative Bayesian Additive Regression Trees (iBART). J Chem Phys 2022; 156:164105. [DOI: 10.1063/5.0090055] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Feature selection (FS) methods often are used to develop data-driven descriptors (i.e., features) for rapidly predicting the functional properties of a physical or chemical system based on its composition and structure. FS algorithms identify descriptors from a candidate pool (i.e., feature space) built by feature engineering (FE) steps that construct complex features from the system's fundamental physical properties. Recursive FE, which involves repeated FE operations on the feature space, is necessary to build features with sufficient complexity to capture the physical behavior of a system. However, this approach creates a highly correlated feature space that contains millions or billions of candidate features. Such feature spaces are computationally demanding to process using traditional FS approaches that often struggle with strong collinearity. Herein, we address this shortcoming by developing a new method that interleaves the FE and FS steps to progressively build and select powerful descriptors with reduced computational demand. We call this method iBART, as it iterates between FE with unary/binary operators and FS with Bayesian additive regression trees (BART). The capabilities of iBART are illustrated by extracting descriptors for predicting metal-support interactions in catalysis, which we compare to those predicted in our previous work using other state-of-the-art FS methods (i.e., LASSO+ l0, SISSO, and Bayesian FS). iBART matches the performance of these methods, yet uses a fraction of the computational resources because it generates a maximum feature space of size O(102), as opposed to O(106) generated by one-shot FE/FS methods.
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Affiliation(s)
- Chun-Yen Liu
- Chemical and Biomolecular Engineering, Rice University, United States of America
| | - Shengbin Ye
- Statistics, Rice University, United States of America
| | - Meng Li
- Statistics, Rice University, United States of America
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17
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Liu F, Park YS, Diercks D, Kazempoor P, Duan C. Enhanced CO 2 Methanation Activity of Sm 0.25Ce 0.75O 2-δ-Ni by Modulating the Chelating Agents-to-Metal Cation Ratio and Tuning Metal-Support Interactions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13295-13304. [PMID: 35262347 DOI: 10.1021/acsami.1c23881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Highly active and selective CO2 methanation catalysts are critical to CO2 upgrading, synthetic natural gas production, and CO2 emission reduction. Wet impregnation is widely used to synthesize oxide-supported metallic nanoparticles as the catalyst for CO2 methanation. However, as the reagents cannot be homogeneously mixed at an atomic level, it is challenging to modulate the microstructure, crystal structure, chemical composition, and electronic structure of catalysts via wet impregnation. Herein, a scalable and straightforward catalyst fabrication approach has been designed and validated to produce Sm0.25Ce0.75O2-δ-supported Ni (SDC-Ni) as the CO2 methanation catalyst. By varying the chelating agents-to-total metal cations ratio (C/I ratio) during the catalyst synthesis, we can readily and simultaneously modulate the microstructure, metallic surface area, crystal structure, chemical composition, and electronic structure of SDC-Ni, consequently fine-tuning the oxide-support interactions and CO2 methanation activity. The optimal C/I ratio (0.1) leads to an SDC-Ni catalyst that facilitates C-O bond cleavage and significantly improves CO2 conversion at 250 °C. A CO2-to-CH4 yield of >73% has been achieved at 250 °C. Furthermore, a stable operation of >1500 hours has been demonstrated, and no degradation is observed. Extensive characterizations were performed to fundamentally understand how to tune and enhance CO2 methanation activity of SDC-Ni by modulating the C/I ratio. The correlation of physical, chemical, and catalytic properties of SDC-Ni with the C/I ratio is established and thoroughly elaborated in this work. This study could be applied to tune the oxide-support interactions of various catalysts for enhancing the catalytic activity.
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Affiliation(s)
- Fan Liu
- Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, United States
| | - Yoo Sei Park
- Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, United States
| | - David Diercks
- Department of Metallurgical & Materials Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Pejman Kazempoor
- School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Chuancheng Duan
- Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, United States
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18
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Plessow PN, Campbell CT. Influence of Adhesion on the Chemical Potential of Supported Nanoparticles as Modeled with Spherical Caps. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Philipp N. Plessow
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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19
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Zhou J, Gao Z, Xiang G, Zhai T, Liu Z, Zhao W, Liang X, Wang L. Interfacial compatibility critically controls Ru/TiO 2 metal-support interaction modes in CO 2 hydrogenation. Nat Commun 2022; 13:327. [PMID: 35039518 PMCID: PMC8764066 DOI: 10.1038/s41467-021-27910-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/08/2021] [Indexed: 11/09/2022] Open
Abstract
Supports can widely affect or even dominate the catalytic activity, selectivity, and stability of metal nanoparticles through various metal-support interactions (MSIs). However, underlying principles have not been fully understood yet, because MSIs are influenced by the composition, size, and facet of both metals and supports. Using Ru/TiO2 supported on rutile and anatase as model catalysts, we demonstrate that metal-support interfacial compatibility can critically control MSI modes and catalytic performances in CO2 hydrogenation. Annealing Ru/rutile-TiO2 in air can enhance CO2 conversion to methane resulting from enhanced interfacial coupling driven by matched lattices of RuOx with rutile-TiO2; annealing Ru/anatase-TiO2 in air decreases CO2 conversion and converts the product into CO owing to strong metal-support interaction (SMSI). Although rutile and anatase share the same chemical composition, we show that interfacial compatibility can basically modify metal-support coupling strength, catalyst morphology, surface atomic configuration, MSI mode, and catalytic performances of Ru/TiO2 in heterogeneous catalysis. Supports can largely affect the catalytic performance of metal nanoparticles, but the underlying principles are not yet fully understood. Here the authors demonstrate that metal-support interfacial compatibility of Ru/TiO2 can critically control the metal-support interaction modes and the catalytic performances in CO2 hydrogenation.
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Affiliation(s)
- Jun Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhe Gao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taoyuan South Road 27, Taiyuan, 030001, China
| | - Guolei Xiang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Tianyu Zhai
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zikai Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Weixin Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xin Liang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Leyu Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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20
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Hu S, Li WX. Sabatier principle of metal-support interaction for design of ultrastable metal nanocatalysts. Science 2021; 374:1360-1365. [PMID: 34735220 DOI: 10.1126/science.abi9828] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Sulei Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Center for Excellence in Nanoscience, iChEM, University of Science and Technology of China, Hefei, China
| | - Wei-Xue Li
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Center for Excellence in Nanoscience, iChEM, University of Science and Technology of China, Hefei, China
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21
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Yang CL, Wang LN, Yin P, Liu J, Chen MX, Yan QQ, Wang ZS, Xu SL, Chu SQ, Cui C, Ju H, Zhu J, Lin Y, Shui J, Liang HW. Sulfur-anchoring synthesis of platinum intermetallic nanoparticle catalysts for fuel cells. Science 2021; 374:459-464. [PMID: 34672731 DOI: 10.1126/science.abj9980] [Citation(s) in RCA: 147] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Cheng-Long Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Li-Na Wang
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Peng Yin
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jieyuan Liu
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Ming-Xi Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Qiang-Qiang Yan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zheng-Shu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Shi-Long Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Sheng-Qi Chu
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Chunhua Cui
- Molecular Electrochemistry Laboratory, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Huanxin Ju
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
| | - Yue Lin
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jianglan Shui
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Hai-Wei Liang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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22
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Messaykeh M, Chenot S, David P, Cabailh G, Jupille J, Koltsov A, Lagarde P, Trcera N, Goniakowski J, Lazzari R. Core level shifts as indicators of Cr chemistry on hydroxylated α-Al 2O 3(0001): a combined photoemission and first-principles study. Phys Chem Chem Phys 2021; 23:21852-21862. [PMID: 34554163 DOI: 10.1039/d1cp03224k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cr/α-Al2O3(0001) interface has been explored by X-ray photoemission spectroscopy, X-ray absorption spectroscopy (XAS) and ab initio first-principles calculations of core level shifts including final state effects. After an initial oxidation via a reaction with residual surface OH but no reduction of the alumina substrate, Cr grows in a metallic form without any chemical effect on the initially oxidized Cr. However, Cr metal lacks crystallinity. Long-range (reflection high energy electron diffraction) and short-range (XAS) order are hardly observed. Thus photoemission combined with atomistic simulations becomes a unique tool to explore the chemistry and environment at the Cr/alumina interface. Cr 2p, O 1s and Al 2s shifted components are all explained by the formation of moieties involving Cr3+ and/or Cr4+ and of metallic Cr0, which supports the previously found Cr buffer mechanism for poorly adhesive metals. Beyond the situation under study, the present data demonstrate the ability of a combined experimental and theoretical approach of core-level shifts to exhaustively describe the general case of disordered metal/oxide interfaces.
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Affiliation(s)
- Maya Messaykeh
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Stéphane Chenot
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Pascal David
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Gregory Cabailh
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Jacques Jupille
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Alexey Koltsov
- ArcelorMittal Maizières Research, Voie Romaine, F-57280 Maizières-lès-Metz, France
| | - Pierre Lagarde
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette, France
| | - Nicolas Trcera
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette, France
| | - Jacek Goniakowski
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
| | - Rémi Lazzari
- CNRS/Sorbonne Université, Institut des NanoSciences de Paris, UMR 7588, 4 Place Jussieu, F-75005 Paris, France.
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23
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Chung S, Schober JC, Tober S, Schmidt D, Khadiev A, Novikov DV, Vonk V, Stierle A. Epitaxy and Shape Heterogeneity of a Nanoparticle Ensemble during Redox Cycles. ACS NANO 2021; 15:13267-13278. [PMID: 34350766 DOI: 10.1021/acsnano.1c03002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The role of metal-support epitaxy on shape and size heterogeneity of nanoparticles and their response to gas atmospheres is not very well explored. Here we show that an ensemble of Pd nanoparticles, grown on MgO(001) by deposition under ultrahigh vacuum, mostly consists of two distinctly epitaxially oriented particles, each having a different structural response to redox cycles. X-ray reciprocal space patterns were acquired in situ under oxidizing and reducing environments. Each type of nanoparticle has a truncated octahedral shape, whereby the majority grows with a cube-on-cube epitaxy on the substrate. Less frequently occurring and larger particles have their principal crystal axes rotated ±3.7° with respect to the substrate's. Upon oxidation, the top (001) facets of both types of particles shrink. The relative change of the rotated particles' top facets is much more pronounced. This finding indicates that a larger mass transfer is involved for the rotated particles and that a larger portion of high-index facets forms. On the main facets of the cube-on-cube particles, the oxidation process results in a considerable strain, as concluded from the evolution to largely asymmetric facet scattering signals. The shape and strain responses are reversible upon reduction, either by annealing to 973 K in vacuum or by reducing with hydrogen. The presented results are important for unraveling different elements of heterogeneity and their effect on the performance of real polycrystalline catalysts. It is shown that a correlation can exist between the particle-support epitaxy and redox-cycling-induced shape changes.
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Affiliation(s)
- Simon Chung
- CXNS - Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Jan-Christian Schober
- CXNS - Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany
| | - Steffen Tober
- CXNS - Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany
| | - Daniel Schmidt
- Fachbereich Physik, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany
| | - Azat Khadiev
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Dmitri V Novikov
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Vedran Vonk
- CXNS - Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Andreas Stierle
- CXNS - Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany
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24
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Piccolo L. Restructuring effects of the chemical environment in metal nanocatalysis and single-atom catalysis. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.03.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Mao Z, Campbell CT. Predicting a Key Catalyst-Performance Descriptor for Supported Metal Nanoparticles: Metal Chemical Potential. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01870] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhongtian Mao
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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26
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Zheng B, Gan T, Shi S, Wang J, Zhang W, Zhou X, Zou Y, Yan W, Liu G. Exsolution of Iron Oxide on LaFeO 3 Perovskite: A Robust Heterostructured Support for Constructing Self-Adjustable Pt-Based Room-Temperature CO Oxidation Catalysts. ACS APPLIED MATERIALS & INTERFACES 2021; 13:27029-27040. [PMID: 34096275 DOI: 10.1021/acsami.1c04836] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Constructing highly active and stable surface sites for O2 activation is essential to lower the barrier of Pt-based catalysts for CO oxidation. Although a few active Pt-metal oxide interfaces have been reported, questions about the stability of these sites under the long-term storage and operation remain unresolved. Here, based on developing a robust FeOx/LaFeO3 heterostructure as a support, we constructed stable Pt-support interfaces to achieve highly active CO oxidation at room temperature. Even after it is kept in the air for more than 6 months, the catalyst (without pretreatment) still maintains the high activity like a fresh one, which is superior to metal hydroxide-Pt interfaces, and meets the requirements of long-term storage for emergency use. In situ characterizations and systematic reaction results showed that CO oxidation occurs through an alternative mechanism, which is triggered by intrinsic reactants and self-adjusted to a more active interface in the reaction process. Theoretical calculations and 57Fe Mössbauer spectra revealed that abundant cation vacancies significantly increase the activity of surface oxygen species and should be responsible for this unique process. This work demonstrates an alternative concept to fabricate robust and highly active Pt-based catalysts for catalytic oxidation.
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Affiliation(s)
- Bin Zheng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Tao Gan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Shaozhen Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Junhu Wang
- Mössbauer Effect Data Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, Liaoning, China
| | - Wenxiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Xin Zhou
- College of Environment and Chemical Engineering, Dalian University, 10 Xuefu Road, Dalian 116622, Liaoning, China
| | - Yongcun Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Wenfu Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
| | - Gang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Road, Changchun 130012, Jilin, China
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27
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Wolf M. Thermodynamic assessment of the stability of bulk and nanoparticulate cobalt and nickel during dry and steam reforming of methane. RSC Adv 2021; 11:18187-18197. [PMID: 34046175 PMCID: PMC8132427 DOI: 10.1039/d1ra01856f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The high reaction temperatures during steam and dry reforming of methane inevitably entail catalyst deactivation. Evaluation of the feasibility or potentially relevant mechanisms at play is of utmost importance to develop highly active and stable catalysts. Herein, various oxidation reactions of bulk-sized nickel and cobalt to the corresponding metal oxide or in the presence of a metal oxide carrier are evaluated thermodynamically and linked to approximated conditions during methane reforming. In particular cobalt aluminate, as well as cobalt or nickel titanates are likely to form. As oxidation to bulk-sized metal oxide is unlikely, a thermodynamic analysis of metallic nanoparticles was performed to calculate the size dependent stability against oxidation to nickel oxide or cobalt oxide in water and carbon dioxide-rich environments. The calculations indicate that nickel nanoparticles >3 nm and cobalt nanoparticles >10 nm are expected to withstand oxidation during steam and dry reforming of methane with stoichiometric feed compositions and methane conversion levels >10% at temperatures up to 1100 and 900 °C, respectively. Lastly, the reduced thermal stability of nanoparticles due to melting point suppression was assessed, leading to similar recommendations concerning minimum particle sizes. Thermodynamic assessment of oxidation and sintering of Co or Ni as well as the size dependent oxidation of nanoparticles to the corresponding oxide are presented considering the prevailing conditions during steam and dry reforming of methane.![]()
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Affiliation(s)
- Moritz Wolf
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH Egerlandstraße 3 91058 Erlangen Germany .,Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT) Egerlandstr. 3 91058 Erlangen Germany
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28
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Murakami K, Mizutani Y, Sampei H, Ishikawa A, Sekine Y. Manipulation of CO adsorption over Me 1/CeO 2 by heterocation doping: Key roles of single-atom adsorption energy. J Chem Phys 2021; 154:164705. [PMID: 33940849 DOI: 10.1063/5.0049582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The performance of metal atoms chemically bonded to oxide supports cannot be explained solely by the intrinsic properties of the metals such as the d-band center. Herein, we present an in-depth study of the correlation between metal-oxide interactions and the properties of the supported metal using CO adsorption on Me1 (Fe1, Co1, and Ni1) loaded over CeO2 (111) doped with divalent (Ca, Sr, and Ba), trivalent (Al, Ga, Sc, Y, and La), and quadrivalent (Hf and Zr) heterocations. CO adsorption over Me1 is strongly dependent on the binding energies of Me1. Two factors led to this trend. First, the extent of the Me1-surface oxygen (Me1-O) bond relaxation during CO adsorption played a key role. Second, the d-band center shifted drastically because of charge transfer to the oxides. The shift is related to the oxophilicity of metals. Adsorption energies of Me1 over oxides include the contributions of the factors described above. Therefore, we can predict the activities of Me1 using the strength of anchoring by oxide supports. Results show that smaller ionic radii of the doped heterocations were associated with more tightly bound Me1. This finding sheds light on the possibility of heterocation-doping manipulating the reactivity of the Me1 catalyst based on theoretical predictions.
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Affiliation(s)
- Kota Murakami
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Yuta Mizutani
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Hiroshi Sampei
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Atsushi Ishikawa
- National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasushi Sekine
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
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29
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Hulva J, Meier M, Bliem R, Jakub Z, Kraushofer F, Schmid M, Diebold U, Franchini C, Parkinson GS. Unraveling CO adsorption on model single-atom catalysts. Science 2021; 371:375-379. [PMID: 33479148 DOI: 10.1126/science.abe5757] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/09/2020] [Indexed: 12/16/2022]
Abstract
Understanding how the local environment of a "single-atom" catalyst affects stability and reactivity remains a challenge. We present an in-depth study of copper1, silver1, gold1, nickel1, palladium1, platinum1, rhodium1, and iridium1 species on Fe3O4(001), a model support in which all metals occupy the same twofold-coordinated adsorption site upon deposition at room temperature. Surface science techniques revealed that CO adsorption strength at single metal sites differs from the respective metal surfaces and supported clusters. Charge transfer into the support modifies the d-states of the metal atom and the strength of the metal-CO bond. These effects could strengthen the bond (as for Ag1-CO) or weaken it (as for Ni1-CO), but CO-induced structural distortions reduce adsorption energies from those expected on the basis of electronic structure alone. The extent of the relaxations depends on the local geometry and could be predicted by analogy to coordination chemistry.
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Affiliation(s)
- Jan Hulva
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | - Matthias Meier
- Institute of Applied Physics, TU Wien, Vienna, Austria.,Computational Materials Physics, University of Vienna, Vienna, Austria
| | - Roland Bliem
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | - Zdenek Jakub
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | | | | | | | - Cesare Franchini
- Computational Materials Physics, University of Vienna, Vienna, Austria.,Alma Mater Studiorum-Università di Bologna, Bologna, Italy
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30
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Zhou J, Du L, Braedt DL, Miao J, Senanayake SD. Growth, sintering, and chemical states of Co supported on reducible CeO 2(111) thin films: The effects of the metal coverage and the nature of the support. J Chem Phys 2021; 154:044704. [PMID: 33514090 DOI: 10.1063/5.0036952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The growth, sintering, and interaction of cobalt with ceria were studied under ultrahigh vacuum conditions by vapor-deposition of Co onto well-defined CeOx(111) (1.5 < x < 2) thin films grown on Ru(0001). Charge transfer from Co to ceria occurs upon deposition of Co on CeO1.96 and partially reduced CeO1.83 at 300 K. X-ray photoelectron spectroscopy studies show that Co is oxidized to Co2+ species at the cost of the reduction of Ce4+ to Ce3+, at a lesser extent on reduced ceria. Co2+ is the predominant species on CeO1.96 at low Co coverages (e.g., ≤0.20 ML). The ratio of metallic Co/Co2+ increases with the increase in the Co coverage. However, both metallic Co and Co2+ species are present on CeO1.83 even at low Co coverages with metallic Co as the major species. Scanning tunneling microscopy results demonstrate that Co tends to wet the CeO1.96 surface at very low Co coverages at room temperature forming one-atomic layer high structures of Co-O-Ce. The increase in the Co coverage can cause the particle growth into three-dimensional structures. The formation of slightly flatter Co particles was observed on reduced CeO1.83. In comparison with other transition metals including Ni, Rh, Pt, and Au, our studies demonstrate that Co on ceria exhibits a smaller particle size and higher thermal stability, likely arising from strong metal-support interactions. The formed particles upon Co deposition at 300 K are present on the ceria surface after heating to 1000 K. The Co-ceria interface can be tuned by varying the Co metal coverage, the annealing temperature, and the nature of the ceria surface.
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Affiliation(s)
- Jing Zhou
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, USAChemistry Division, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Linze Du
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, USA
| | - Daniel L Braedt
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, USA
| | - Jintao Miao
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, USA
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31
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An Q, McDonald M, Fortunelli A, Goddard WA. Controlling the Shapes of Nanoparticles by Dopant-Induced Enhancement of Chemisorption and Catalytic Activity: Application to Fe-Based Ammonia Synthesis. ACS NANO 2021; 15:1675-1684. [PMID: 33355457 DOI: 10.1021/acsnano.0c09346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We showed recently that the catalytic efficiency of ammonia synthesis on Fe-based nanoparticles (NP) for Haber-Bosch (HB) reduction of N2 to ammonia depends very dramatically on the crystal surface exposed and on the doping. In turn, the stability of each surface depends on the stable intermediates present during the catalysis. Thus, under reaction conditions, the shape of the NP is expected to evolve to optimize surface energies. In this paper, we propose to manipulate the shape of the nanoparticles through doping combined with chemisorption and catalysis. To do this, we consider the relationships between the catalyst composition (adding dopant elements) and on how the distribution of the dopant atoms on the bulk and facet sites affects the shape of the particles and therefore the number of active sites on the catalyst surfaces. We use our hierarchical, high-throughput catalyst screening (HHTCS) approach but extend the scope of HHTCS to select dopants that can increase the catalytically active surface orientations, such as Fe-bcc(111), at the expense of catalytically inactive facets, such as Fe-bcc(100). Then, for the most promising dopants, we predict the resulting shape and activity of doped Fe-based nanoparticles under reaction conditions. We examined 34 possible dopants across the periodic table and found 16 dopants that can potentially increase the fraction of active Fe-bcc(111) vs inactive Fe-bcc(100) facets. Combining this reshaping criterion with our HHTCS estimate of the resulting catalytic performance, we show that Si and Ni are the most promising elements for improving the rates of catalysis by optimizing the shape to decrease reaction barriers. Then, using Si dopant as a working example, we build a steady-state dynamical Wulff construction of Si-doped Fe bcc nanoparticles. We use nanoparticles with a diameter of ∼10 nm, typical of industrial catalysts. We predict that doping Si into such Fe nanoparticles at the optimal atomic content of ∼0.3% leads to rate enhancements by a factor of 56 per nanoparticle under target HB conditions.
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Affiliation(s)
- Qi An
- Department of Chemical and Materials Engineering, University of Nevada-Reno, Reno, Nevada 89577, United States
| | - Molly McDonald
- Department of Chemical and Materials Engineering, University of Nevada-Reno, Reno, Nevada 89577, United States
| | - Alessandro Fortunelli
- Materials and Process Simulation Center (MSC), California Institute of Technology, Pasadena, California 91125, United States
- CNR-ICCOM, Consiglio Nazionale delle Ricerche, ThC2-Lab, Pisa 56124, Italy
| | - William A Goddard
- Materials and Process Simulation Center (MSC), California Institute of Technology, Pasadena, California 91125, United States
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Bhanderi K, Ghalsasi PS, Inoue K. Nonconventional driving force for selective oxidative C-C coupling reaction due to concurrent and curious formation of Ag 0. Sci Rep 2021; 11:1568. [PMID: 33452369 PMCID: PMC7811016 DOI: 10.1038/s41598-021-81020-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/04/2021] [Indexed: 01/29/2023] Open
Abstract
Is it possible to 'explore' metal's intrinsic property-a cohesive interaction-which naturally transform M0 into an aggregate or a particle or film for driving oxidative C-C bond formation? With this intention, reduction of [Ag(NH3)2]+ to Ag0 with concurrent oxidation of different phenols/naphthols to biphenyls was undertaken. The work is originated during careful observation of an undergraduate experiment-Tollens' test-where silver mirror film deposition takes place on the walls of borosilicate glass test tube. When the same reaction was carried out in polypropylene (plastic-Eppendorf) tube, we observed aggregation of Ag0 leading to floating Ag-particles but not silver film deposition. This prompted us to carry out challenging cross-coupling reaction by ONLY changing the surface of the reaction flask from glass to plastic to silicones. To our surprise, we observed good selective oxidative homo-coupling on Teflon surface while cross-coupling in Eppendorf vial. Thus, we propose that the formation of biphenyl is driven by the macroscopic growth of Ag0 into [Ag-particle] orchestrated by Ag…Ag cohesive interaction. To validate results, experiments were also performed on gram scale. More importantly, oxidation of β-naphthol carried out in quartz (chiral) tube which yielded slight enantioselective excess of BINOL. Details are discussed.
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Affiliation(s)
- Khushboo Bhanderi
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, 390002, India
| | - Prasanna S Ghalsasi
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, 390002, India.
| | - Katsuya Inoue
- Department of Chemistry, Graduate School of Science and Chirality Research Center (CResCent), Hiroshima University, 1-3-1, Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8526, Japan
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33
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Wang C, Zhang X, Li J, Qi X, Guo Z, Wei H, Chu H. Gold Nanoparticles on Nanosheets Derived from Layered Rare-Earth Hydroxides for Catalytic Glycerol-to-Lactic Acid Conversion. ACS APPLIED MATERIALS & INTERFACES 2021; 13:522-530. [PMID: 33393772 DOI: 10.1021/acsami.0c17732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layered rare-earth hydroxides (LREHs), as a series of special lamellar compounds having a similar structure to layered double hydroxides (LDHs), are becoming a new type of catalyst materials. In this study, we have prepared a series of uniform LREH (RE = Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm) nanosheets through a reverse-microemulsion method. After deposition-precipitation of HAuCl4 and calcination, supported Au catalysts (denoted as Au/LREO) were subsequently obtained. The catalytic properties of all the derived Au/LREO catalysts were evaluated by aerobic conversion of glycerol to lactic acid under mild conditions (90 °C, 1 atm). Among these catalysts, Au/LPrO displays the best performances, including the highest glycerol conversion, lactic acid, and C3 product selectivity. Both the catalytic activities and the characterizations of the structure of Au/LREO indicate that the kind of rare-earth ions plays a key role in determining the Au particle size and its valence state and reducibility, which are the important factors correlated with the catalytic activities in glycerol conversion. In fact, the three features of gold particles, the extra-small size (∼3 nm), high content of Au0 species, and high reducibility, are the essential prerequisites for achieving the superior catalytic performance of Au/LPrO.
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Affiliation(s)
- Congying Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xueqiong Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Jiefei Li
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xingyue Qi
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Ziyang Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Hang Wei
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Haibin Chu
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
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34
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Hynek DJ, Singhania RM, Hart JL, Davis B, Wang M, Strandwitz NC, Cha JJ. Effects of growth substrate on the nucleation of monolayer MoTe 2. CrystEngComm 2021. [DOI: 10.1039/d1ce00275a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Choice of growth substrate is shown to have a significant effect on the conversion of ALD grown molybdenum oxide to monolayer 2H molybdenum ditelluride.
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Affiliation(s)
- David J. Hynek
- Energy Sciences Institute, Department of Mechanical Engineering and Materials Science, Yale University, West Haven, CT 06516, USA
| | - Raivat M. Singhania
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015, USA
| | - James L. Hart
- Energy Sciences Institute, Department of Mechanical Engineering and Materials Science, Yale University, West Haven, CT 06516, USA
| | - Benjamin Davis
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015, USA
| | - Mengjing Wang
- Energy Sciences Institute, Department of Mechanical Engineering and Materials Science, Yale University, West Haven, CT 06516, USA
| | - Nicholas C. Strandwitz
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015, USA
| | - Judy J. Cha
- Energy Sciences Institute, Department of Mechanical Engineering and Materials Science, Yale University, West Haven, CT 06516, USA
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35
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Zhu B, Qi R, Yuan L, Gao Y. Real-time atomistic simulation of the Ostwald ripening of TiO 2 supported Au nanoparticles. NANOSCALE 2020; 12:19142-19148. [PMID: 32936163 DOI: 10.1039/d0nr04571c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ostwald ripening (OR), one of the major processes of nanoparticle sintering, is critical for the rational design of functional nanomaterials. However, the atomistic mechanism of OR has not been fully understood, because the characterization of interparticle transport of atoms in real-time is challenging by either experiments or theoretical simulations. Thus, current understandings are based on ad hoc assumptions about the OR mechanism, which have never been confirmed yet at the atomic scale. Herein, we realized all-atom kinetic Monte Carlo simulation of sintering of TiO2 supported Au nanoparticles (NPs) through the OR mechanism at millisecond timescales. We demonstrated that the "semi-spherical" assumption should be removed. The OR process was a stagewise process determined by different rate-determining steps, which is in contrast to the single-stage presumption. Au dimers, rather than monomers as generally assumed, were exchanged among different NPs. Besides, we proposed a new kinetic model for describing the determining rate of OR without presumptions. This work brings deeper insights into the atomistic OR mechanism and also paves the way for real-time monitoring of catalyst sintering at the atomic scale.
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Affiliation(s)
- Beien Zhu
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China. and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Rui Qi
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lina Yuan
- College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China
| | - Yi Gao
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China. and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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36
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Nanoscale architecture of ceria-based model catalysts: Pt–Co nanostructures on well-ordered CeO2(111) thin films. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63462-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Cheula R, Maestri M, Mpourmpakis G. Modeling Morphology and Catalytic Activity of Nanoparticle Ensembles Under Reaction Conditions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Raffaele Cheula
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa, 34, 20156 Milano, Italy
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, 4200 Fifth Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Matteo Maestri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa, 34, 20156 Milano, Italy
| | - Giannis Mpourmpakis
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, 4200 Fifth Avenue, Pittsburgh, Pennsylvania 15260, United States
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38
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Rahmati M, Safdari MS, Fletcher TH, Argyle MD, Bartholomew CH. Chemical and Thermal Sintering of Supported Metals with Emphasis on Cobalt Catalysts During Fischer–Tropsch Synthesis. Chem Rev 2020; 120:4455-4533. [DOI: 10.1021/acs.chemrev.9b00417] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mahmood Rahmati
- Department of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
| | - Mohammad-Saeed Safdari
- Department of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
| | | | - Morris D. Argyle
- Department of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
| | - Calvin H. Bartholomew
- Department of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
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39
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Huang J, He S, Goodsell JL, Mulcahy JR, Guo W, Angerhofer A, Wei WD. Manipulating Atomic Structures at the Au/TiO2 Interface for O2 Activation. J Am Chem Soc 2020; 142:6456-6460. [DOI: 10.1021/jacs.9b13453] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jiawei Huang
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Shuai He
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Justin L. Goodsell
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Justin R. Mulcahy
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Wenxiao Guo
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Alexander Angerhofer
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
| | - Wei David Wei
- Department of Chemistry and Center for Catalysis, University of Florida, Gainesville, Florida 32611, United States
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40
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Choksi TS, Streibel V, Abild-Pedersen F. Predicting metal-metal interactions. II. Accelerating generalized schemes through physical insights. J Chem Phys 2020; 152:094702. [PMID: 33480718 DOI: 10.1063/1.5141378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Operando-computational frameworks that integrate descriptors for catalyst stability within catalyst screening paradigms enable predictions of rates and selectivity on chemically faithful representations of nanoparticles under reaction conditions. These catalyst stability descriptors can be efficiently predicted by density functional theory (DFT)-based models. The alloy stability model, for example, predicts the stability of metal atoms in nanoparticles with site-by-site resolution. Herein, we use physical insights to present accelerated approaches of parameterizing this recently introduced alloy-stability model. These accelerated approaches meld quadratic functions for the energy of metal atoms in terms of the coordination number with linear correlations between model parameters and the cohesive energies of bulk metals. By interpolating across both the coordination number and chemical space, these accelerated approaches shrink the training set size for 12 fcc p- and d-block metals from 204 to as few as 24 DFT calculated total energies without sacrificing the accuracy of our model. We validate the accelerated approaches by predicting adsorption energies of metal atoms on extended surfaces and 147 atom cuboctahedral nanoparticles with mean absolute errors of 0.10 eV and 0.24 eV, respectively. This efficiency boost will enable a rapid and exhaustive exploration of the vast material space of transition metal alloys for catalytic applications.
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Affiliation(s)
- Tej S Choksi
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA
| | - Verena Streibel
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA
| | - Frank Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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41
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Streibel V, Choksi TS, Abild-Pedersen F. Predicting metal-metal interactions. I. The influence of strain on nanoparticle and metal adlayer stabilities. J Chem Phys 2020; 152:094701. [PMID: 33480713 DOI: 10.1063/1.5130566] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Strain-engineering of bimetallic nanomaterials is an important design strategy for developing new catalysts. Herein, we introduce an approach for including strain effects into a recently introduced, density functional theory (DFT)-based alloy stability model. The model predicts adsorption site stabilities in nanoparticles and connects these site stabilities with catalytic reactivity and selectivity. Strain-based dependencies will increase the model's accuracy for nanoparticles affected by finite-size effects. In addition to the stability of small nanoparticles, strain also influences the heat of adsorption of epitaxially grown metal-on-metal adlayers. In this respect, we successfully benchmark the strain-including alloy stability model with previous experimentally determined trends in the heats of adsorption of Au and Cu adlayers on Pt (111). For these systems, our model predicts stronger bimetallic interactions in the first monolayer than monometallic interactions in the second monolayer. We explicitly quantify the interplay between destabilizing strain effects and the energy gained by forming new metal-metal bonds. While tensile strain in the first Cu monolayer significantly destabilizes the adsorption strength, compressive strain in the first Au monolayer has a minimal impact on the heat of adsorption. Hence, this study introduces and, by comparison with previous experiments, validates an efficient DFT-based approach for strain-engineering the stability, and, in turn, the catalytic performance, of active sites in bimetallic alloys with atomic level resolution.
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Affiliation(s)
- Verena Streibel
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA
| | - Tej S Choksi
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA
| | - Frank Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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42
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Richey NE, de Paula C, Bent SF. Understanding chemical and physical mechanisms in atomic layer deposition. J Chem Phys 2020; 152:040902. [PMID: 32007080 DOI: 10.1063/1.5133390] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Atomic layer deposition (ALD) is a powerful tool for achieving atomic level control in the deposition of thin films. However, several physical and chemical phenomena can occur which cause deviation from "ideal" film growth during ALD. Understanding the underlying mechanisms that cause these deviations is important to achieving even better control over the growth of the deposited material. Herein, we review several precursor chemisorption mechanisms and the effect of chemisorption on ALD growth. We then follow with a discussion on diffusion and its impact on film growth during ALD. Together, these two fundamental processes of chemisorption and diffusion underlie the majority of mechanisms which contribute to material growth during a given ALD process, and the recognition of their role allows for more rational design of ALD parameters.
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Affiliation(s)
- Nathaniel E Richey
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA
| | - Camila de Paula
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA
| | - Stacey F Bent
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA
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43
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Zhang L, Su YQ, Chang MW, Filot IAW, Hensen EJM. Linear Activation Energy-Reaction Energy Relations for LaBO 3 (B = Mn, Fe, Co, Ni) Supported Single-Atom Platinum Group Metal Catalysts for CO Oxidation. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2019; 123:31130-31141. [PMID: 32952767 PMCID: PMC7493305 DOI: 10.1021/acs.jpcc.9b11079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Indexed: 06/11/2023]
Abstract
Single-atom catalysts are at the center of attention of the heterogeneous catalysis community because they exhibit unique electronic structures distinct from nanoparticulate forms, resulting in very different catalytic performance combined with increased usage of often costly transition metals. Proper selection of a support that can stably keep the metal in a high dispersion is crucial. Here, we employ spin-polarized density functional theory and microkinetics simulations to identify optimum LaBO3 (B = Mn, Fe, Co, Ni) supported catalysts dispersing platinum group metals as atoms on their surface. We identify a strong correlation between the CO adsorption energy and the d-band center of the doped metal atom. These CO adsorption strength differences are explained in terms of the electronic structure. In general, Pd-doped surfaces exhibit substantially lower activation barriers for CO2 formation than the Rh- and Pt-doped surfaces. Strong Brønsted-Evans-Polanyi correlations are found for CO oxidation on these single-atom catalysts, providing a tool to predict promising compositions. Microkinetics simulations show that Pd-doped LaCoO3 is the most active catalyst for low-temperature CO oxidation. Moderate CO adsorption strength and low reaction barriers explain the high activity of this composition. Our approach provides guidelines for the design of highly active and cost-effective perovskite supported single-atom catalysts.
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44
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Resasco J, DeRita L, Dai S, Chada JP, Xu M, Yan X, Finzel J, Hanukovich S, Hoffman AS, Graham GW, Bare SR, Pan X, Christopher P. Uniformity Is Key in Defining Structure–Function Relationships for Atomically Dispersed Metal Catalysts: The Case of Pt/CeO2. J Am Chem Soc 2019; 142:169-184. [DOI: 10.1021/jacs.9b09156] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Joaquin Resasco
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Leo DeRita
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | | | - Joseph P. Chada
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Mingjie Xu
- Fok Ying Tung Research Institute, Hong Kong University of Science and Technology, Guangzhou 511458, PR China
| | | | - Jordan Finzel
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Sergei Hanukovich
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Adam S. Hoffman
- Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - George W. Graham
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Simon R. Bare
- Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | | | - Phillip Christopher
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
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45
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Kim HJ, Jang MG, Shin D, Han JW. Design of Ceria Catalysts for Low‐Temperature CO Oxidation. ChemCatChem 2019. [DOI: 10.1002/cctc.201901787] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hyung Jun Kim
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang, Gyeongbuk 37673 Republic of Korea
| | - Myeong Gon Jang
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang, Gyeongbuk 37673 Republic of Korea
| | - Dongjae Shin
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang, Gyeongbuk 37673 Republic of Korea
| | - Jeong Woo Han
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang, Gyeongbuk 37673 Republic of Korea
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46
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Resasco J, Yang F, Mou T, Wang B, Christopher P, Resasco DE. Relationship between Atomic Scale Structure and Reactivity of Pt Catalysts: Hydrodeoxygenation of m-Cresol over Isolated Pt Cations and Clusters. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04330] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Joaquin Resasco
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Feifei Yang
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Tong Mou
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Bin Wang
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Phillip Christopher
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Daniel E. Resasco
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
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47
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van Deelen TW, Hernández Mejía C, de Jong KP. Control of metal-support interactions in heterogeneous catalysts to enhance activity and selectivity. Nat Catal 2019. [DOI: 10.1038/s41929-019-0364-x] [Citation(s) in RCA: 652] [Impact Index Per Article: 130.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Rumptz JR, Campbell CT. Adhesion Energies of Solvent Films to Pt(111) and Ni(111) Surfaces by Adsorption Calorimetry. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03591] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Lai KC, Evans JW. Complex oscillatory decrease with size in diffusivity of {100}-epitaxially supported 3D fcc metal nanoclusters. NANOSCALE 2019; 11:17506-17516. [PMID: 31532433 DOI: 10.1039/c9nr05845a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Diffusion and coalescence of supported 3D metal nanoclusters (NCs) leads to Smoluchowski Ripening (SR), a key pathway for catalyst degradation. Variation of the NC diffusion coefficient, DN, with size N (in atoms) controls SR kinetics. Traditionally, a form DN∼N-β was assumed consistent with mean-field analysis. However, KMC simulation of a stochastic model for diffusion of {100}-epitaxially supported fcc NCs mediated by surface diffusion reveals instead a complex oscillatory decrease of DN with N. Barriers for surface diffusion of metal atoms across and between facets, along step edges, etc., in this model are selected to accurately capture behavior for fcc metals. (This contrasts standard bond-breaking prescriptions which fail dramatically.) For strong adhesion, equilibrated NCs are truncated pyramids (TP). Local minima of DN sometimes but not always correspond to sizes, NTP, where these have a closed-shell structure. Local maxima generally correspond to N≈NTP + 3 for N = O(102). For weak adhesion, equilibrated NCs are truncated octahedra (TO), and local minima of DN occur for sizes close or equal to those of just a subset of closed-shell structures. Analytic characterization of energetics along the NC diffusion pathway (which involves dissolving and reforming outer layers of facets) provides fundamental insight into the behavior of DN, including the strong variation with N of the effective NC diffusion barrier.
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Affiliation(s)
- King C Lai
- Division of Chemical & Biological Sciences, Ames Laboratory, USDOE and Department of Physics & Astronomy, Iowa State University, Ames IA 50011, USA.
| | - James W Evans
- Division of Chemical & Biological Sciences, Ames Laboratory, USDOE and Department of Physics & Astronomy, Iowa State University, Ames IA 50011, USA.
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50
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Wolf M, Fischer N, Claeys M. Preparation of isolated Co 3O 4 and fcc-Co crystallites in the nanometre range employing exfoliated graphite as novel support material. NANOSCALE ADVANCES 2019; 1:2910-2923. [PMID: 36133606 PMCID: PMC9417318 DOI: 10.1039/c9na00291j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/07/2019] [Indexed: 06/16/2023]
Abstract
The inert nature of graphitic samples allows for characterisation of rather isolated supported nanoparticles in model catalysts, as long as sufficiently large inter-particle distances are obtained. However, the low surface area of graphite and the little interaction with nanoparticles result in a challenging application of conventional preparation routes in practice. In the present study, a set of graphitic carbon materials was characterised in order to identify potential support materials for the preparation of model catalyst systems. Various sizes of well-defined Co3O4 nanoparticles were synthesised separately and supported onto exfoliated graphite powder, that is graphite after solvent-assisted exfoliation via ultrasonication resulting in thinner flakes with increased specific surface area. The stability of the supported nanoparticles during reduction to metallic cobalt in H2 was monitored in situ by means of X-ray diffraction and smaller crystallite sizes were found to be harder to reduce than their larger counterparts. A low cobalt loading of 1 wt% was required to avoid aggregates in the parent catalyst, and this allowed for the preparation of supported cobalt nanoparticles which were resistant to sintering at reduction temperatures below 370 °C. The developed model catalysts are ideally suited for sintering studies of isolated nano-sized cobalt particles as the graphitic support material does not provide distinct metal-support interaction. Furthermore, the differently sized cobaltous particles in the various model systems render possible studies on structural dependencies of activity, selectivity, and deactivation in cobalt oxide or cobalt catalysed reactions.
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Affiliation(s)
- Moritz Wolf
- Catalysis Institute, DST-NRF Centre of Excellence in Catalysis cchange, Department of Chemical Engineering, University of Cape Town Rondebosch 7701 South Africa
| | - Nico Fischer
- Catalysis Institute, DST-NRF Centre of Excellence in Catalysis cchange, Department of Chemical Engineering, University of Cape Town Rondebosch 7701 South Africa
| | - Michael Claeys
- Catalysis Institute, DST-NRF Centre of Excellence in Catalysis cchange, Department of Chemical Engineering, University of Cape Town Rondebosch 7701 South Africa
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