1
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Roongcharoen T, Yang X, Han S, Sementa L, Vegge T, Hansen HA, Fortunelli A. Oxidation and de-alloying of PtMn particle models: a computational investigation. Faraday Discuss 2023; 242:174-192. [PMID: 36196677 DOI: 10.1039/d2fd00107a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We present a computational study of the energetics and mechanisms of oxidation of Pt-Mn systems. We use slab models and simulate the oxidation process over the most stable (111) facet at a given Pt2Mn composition to make the problem computationally affordable, and combine Density-Functional Theory (DFT) with neural network potentials and metadynamics simulations to accelerate the mechanistic search. We find, first, that Mn has a strong tendency to alloy with Pt. This tendency is optimally realized when Pt and Mn are mixed in the bulk, but, at a composition in which the Mn content is high enough such as for Pt2Mn, Mn atoms will also be found in the surface outmost layer. These surface Mn atoms can dissociate O2 and generate MnOx species, transforming the surface-alloyed Mn atoms into MnOx surface oxide structures supported on a metallic framework in which one or more vacancy sites are simultaneously created. The thus-formed vacancies promote the successive steps of the oxidation process: the vacancy sites can be filled by surface oxygen atoms, which can then interact with Mn atoms in deeper layers, or subsurface Mn atoms can intercalate into interstitial sites. Both these steps facilitate the extraction of further bulk Mn atoms into MnOx oxide surface structures, and thus the progress of the oxidation process, with typical rate-determining energy barriers in the range 0.9-1.0 eV.
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Affiliation(s)
- Thantip Roongcharoen
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche, via G. Moruzzi 1, Pisa, 56124, Italy. .,Department of Chemistry and Industrial Chemistry, DCCI, University of Pisa, Via G. Moruzzi 13, Pisa, Italy
| | - Xin Yang
- Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800 Kgs. Lyngby, Denmark.
| | - Shuang Han
- Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800 Kgs. Lyngby, Denmark.
| | - Luca Sementa
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche, via G. Moruzzi 1, Pisa, 56124, Italy.
| | - Tejs Vegge
- Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800 Kgs. Lyngby, Denmark.
| | - Heine Anton Hansen
- Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800 Kgs. Lyngby, Denmark.
| | - Alessandro Fortunelli
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche, via G. Moruzzi 1, Pisa, 56124, Italy.
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2
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Zhang T, Zhang Z, Luo D, Xie T, Zheng WT, Hu Z, Yang RT. Photothermal Synergism on Pd/TiO 2 Catalysts with Varied TiO 2 Crystalline Phases for NO x Removal via H 2-SCR: A Transient DRIFTS Study. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Zhang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhenyu Zhang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Decun Luo
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Tao Xie
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Wen-Tao Zheng
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Zhun Hu
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Ralph T. Yang
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow, 2300 Hayward Street, Ann Arbor, Michigan 48109-2136, United States
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3
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Du P, Qi R, Zhang Y, Gu Q, Xu X, Tan Y, Liu X, Wang A, Zhu B, Yang B, Zhang T. Single-atom-driven dynamic carburization over Pd1–FeOx catalyst boosting CO2 conversion. Chem 2022. [DOI: 10.1016/j.chempr.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Abstract
Zeolites with ordered microporous systems, distinct framework topologies, good spatial nanoconfinement effects, and superior (hydro)thermal stability are an ideal scaffold for planting diverse active metal species, including single sites, clusters, and nanoparticles in the framework and framework-associated sites and extra-framework positions, thus affording the metal-in-zeolite catalysts outstanding activity, unique shape selectivity, and enhanced stability and recyclability in the processes of Brønsted acid-, Lewis acid-, and extra-framework metal-catalyzed reactions. Especially, thanks to the advances in zeolite synthesis and characterization techniques in recent years, zeolite-confined extra-framework metal catalysts (denoted as metal@zeolite composites) have experienced rapid development in heterogeneous catalysis, owing to the combination of the merits of both active metal sites and zeolite intrinsic properties. In this review, we will present the recent developments of synthesis strategies for incorporating and tailoring of active metal sites in zeolites and advanced characterization techniques for identification of the location, distribution, and coordination environment of metal species in zeolites. Furthermore, the catalytic applications of metal-in-zeolite catalysts are demonstrated, with an emphasis on the metal@zeolite composites in hydrogenation, dehydrogenation, and oxidation reactions. Finally, we point out the current challenges and future perspectives on precise synthesis, atomic level identification, and practical application of the metal-in-zeolite catalyst system.
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Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Shiqin Gao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
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5
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Ghampson IT, Yun GN, Kaneko A, Vargheese V, Bando KK, Shishido T, Oyama ST. Effect of Support and Pd Cluster Size on Catalytic Methane Partial Oxidation to Dimethyl Ether Using a NO/O 2 Shuttle. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I. Tyrone Ghampson
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Gwang-Nam Yun
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- Green Carbon Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Arisa Kaneko
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Vibin Vargheese
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kyoko K. Bando
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Tetsuya Shishido
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
| | - S. Ted Oyama
- School of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
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6
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7
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Kubota H, Mine S, Toyao T, Maeno Z, Shimizu KI. Redox-Driven Reversible Structural Evolution of Isolated Silver Atoms Anchored to Specific Sites on γ-Al2O3. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroe Kubota
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Shinya Mine
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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8
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Tang Y, Li Y, Feng Tao F. Activation and catalytic transformation of methane under mild conditions. Chem Soc Rev 2021; 51:376-423. [PMID: 34904592 DOI: 10.1039/d1cs00783a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the last few decades, worldwide scientists have been motivated by the promising production of chemicals from the widely existing methane (CH4) under mild conditions for both chemical synthesis with low energy consumption and climate remediation. To achieve this goal, a whole library of catalytic chemistries of transforming CH4 to various products under mild conditions is required to be developed. Worldwide scientists have made significant efforts to reach this goal. These significant efforts have demonstrated the feasibility of oxidation of CH4 to value-added intermediate compounds including but not limited to CH3OH, HCHO, HCOOH, and CH3COOH under mild conditions. The fundamental understanding of these chemical and catalytic transformations of CH4 under mild conditions have been achieved to some extent, although currently neither a catalyst nor a catalytic process can be used for chemical production under mild conditions at a large scale. In the academic community, over ten different reactions have been developed for converting CH4 to different types of oxygenates under mild conditions in terms of a relatively low activation or catalysis temperature. However, there is still a lack of a molecular-level understanding of the activation and catalysis processes performed in extremely complex reaction environments under mild conditions. This article reviewed the fundamental understanding of these activation and catalysis achieved so far. Different oxidative activations of CH4 or catalytic transformations toward chemical production under mild conditions were reviewed in parallel, by which the trend of developing catalysts for a specific reaction was identified and insights into the design of these catalysts were gained. As a whole, this review focused on discussing profound insights gained through endeavors of scientists in this field. It aimed to present a relatively complete picture for the activation and catalytic transformations of CH4 to chemicals under mild conditions. Finally, suggestions of potential explorations for the production of chemicals from CH4 under mild conditions were made. The facing challenges to achieve high yield of ideal products were highlighted and possible solutions to tackle them were briefly proposed.
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Affiliation(s)
- Yu Tang
- Institute of Molecular Catalysis and In situ/operando Studies, College of Chemistry, Fuzhou University, Fujian, 350000, China.
| | - Yuting Li
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
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9
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Jing Y, Wang G, Ting KW, Maeno Z, Oshima K, Satokawa S, Nagaoka S, Shimizu KI, Toyao T. Roles of the basic metals La, Ba, and Sr as additives in Al2O3-supported Pd-based three-way catalysts. J Catal 2021. [DOI: 10.1016/j.jcat.2021.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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10
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Bindra P, Hazra A. Electroless deposition of Pd/Pt nanoparticles on electrochemically grown TiO 2 nanotubes for ppb level sensing of ethanol at room temperature. Analyst 2021; 146:1880-1891. [PMID: 33475622 DOI: 10.1039/d0an01757d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents a comparative sensing study of three sensors based on pristine TiO2 nanotubes, Pd loaded TiO2 nanotubes, and Pt loaded TiO2 nanotubes. Pristine TiO2 nanotubes were synthesized using an electrochemical anodization method and an electroless plating method was used for the uniform deposition of noble metal nanoparticles of either Pd or Pt over the surface of TiO2 nanotubes. The samples were thoroughly characterized by XRD, FESEM, EDS, TEM, and XPS techniques. The sensitivity of all three sensors was investigated at room temperature (300 K) for different volatile organic compounds like ethanol, methanol, 2-propanol, acetone, and benzene. The results revealed that loading of Pd and Pt nanoparticles improved the response magnitude of the sensor remarkably as these noble metals possess better oxygen dissociation capability than pristine TiO2. The Pd-TiO2 nanotube sensor exhibited a maximum response magnitude of 20-98% towards 100-1000 ppb of ethanol at room temperature. Notably, the formation of Pd/Pt-TiO2 discrete heterojunctions on the surface of TiO2 nanotubes was found to be responsible for enhanced sensitivity of the sensors.
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Affiliation(s)
- Prateek Bindra
- Dept. of Electrical & Electronics Engineering, Birla Institute of Technology and Science (BITS)-Pilani, Vidya Vihar, Rajasthan 333031, India.
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11
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Yasumura S, Ide H, Ueda T, Jing Y, Liu C, Kon K, Toyao T, Maeno Z, Shimizu KI. Transformation of Bulk Pd to Pd Cations in Small-Pore CHA Zeolites Facilitated by NO. JACS AU 2021; 1:201-211. [PMID: 34467284 PMCID: PMC8395613 DOI: 10.1021/jacsau.0c00112] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 06/13/2023]
Abstract
Atomic dispersion of metal species has attracted attention as a unique phenomenon that affects adsorption properties and catalytic activities and that can be used to design so-called single atom materials. In this work, we describe atomic dispersion of bulk Pd into small pores of CHA zeolites. Under 4% NO flow at 600 °C, bulk Pd metal on the outside of CHA zeolites effectively disperses, affording Pd2+ cations on Al sites with concomitant formation of N2O, as revealed by microscopic and spectroscopic characterizations combined with mass spectroscopy. In the present method, even commercially available submicrosized Pd black can be used as a Pd source, and importantly, 4.1 wt % of atomic Pd2+ cations, which is the highest loading amount reported so far, can be introduced into CHA zeolites. The structural evolution of bulk Pd metal is also investigated by in situ X-ray absorption spectroscopy (XAS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), as well as ab initio thermodynamic analysis using density functional theory (DFT) calculations.
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Affiliation(s)
- Shunsaku Yasumura
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Hajime Ide
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Taihei Ueda
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Yuan Jing
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Chong Liu
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Kenichi Kon
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Ken-ichi Shimizu
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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12
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Timoshenko J, Roldan Cuenya B. In Situ/ Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy. Chem Rev 2021; 121:882-961. [PMID: 32986414 PMCID: PMC7844833 DOI: 10.1021/acs.chemrev.0c00396] [Citation(s) in RCA: 184] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 12/18/2022]
Abstract
During the last decades, X-ray absorption spectroscopy (XAS) has become an indispensable method for probing the structure and composition of heterogeneous catalysts, revealing the nature of the active sites and establishing links between structural motifs in a catalyst, local electronic structure, and catalytic properties. Here we discuss the fundamental principles of the XAS method and describe the progress in the instrumentation and data analysis approaches undertaken for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra. Recent usages of XAS in the field of heterogeneous catalysis, with emphasis on examples concerning electrocatalysis, will be presented. The latter is a rapidly developing field with immense industrial applications but also unique challenges in terms of the experimental characterization restrictions and advanced modeling approaches required. This review will highlight the new insight that can be gained with XAS on complex real-world electrocatalysts including their working mechanisms and the dynamic processes taking place in the course of a chemical reaction. More specifically, we will discuss applications of in situ and operando XAS to probe the catalyst's interactions with the environment (support, electrolyte, ligands, adsorbates, reaction products, and intermediates) and its structural, chemical, and electronic transformations as it adapts to the reaction conditions.
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Affiliation(s)
- Janis Timoshenko
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
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13
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Xie T, Cao L, Sun W, Yang J. Methanol reforming denitration over an integrated bifunctional CuZnO x–X–MnPdO z@Ni catalyst at low temperature. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02089c] [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
Severe conditions involved in hydrogen storage and transportation limit the practical applications of hydrogen denitration reaction.
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Affiliation(s)
- Tianying Xie
- School of Resources and Environmental Engineering
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- East China University of Science and Technology
- Shanghai 200237
- P.R. China
| | - Limei Cao
- School of Resources and Environmental Engineering
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- East China University of Science and Technology
- Shanghai 200237
- P.R. China
| | - Wei Sun
- College of Ecology and Environment
- Hainan University
- Haikou 570228
- P.R. China
| | - Ji Yang
- School of Resources and Environmental Engineering
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- East China University of Science and Technology
- Shanghai 200237
- P.R. China
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14
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Kumar AP, Bilehal D, Tadesse A, Kumar D. Photocatalytic degradation of organic dyes: Pd-γ-Al 2O 3 and PdO-γ-Al 2O 3 as potential photocatalysts. RSC Adv 2021; 11:6396-6406. [PMID: 35685908 PMCID: PMC9133854 DOI: 10.1039/d0ra10290c] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/18/2021] [Indexed: 01/22/2023] Open
Abstract
This work describes photocatalytic application of γ-alumina (γ-Al2O3) surface-anchored palladium and palladium oxide nanoparticles (Pd-γ-Al2O3 and PdO-γ-Al2O3 NPs) synthesized by a novel co-precipitation technique. The palladium(0) NPs (Pd-γ-Al2O3) were formed by calcination of the sample in inert medium, whereas PdO NPs (PdO-γ-Al2O3) were obtained by calcination of the sample in atmospheric oxygen. As-synthesized Pd-γ-Al2O3 and PdO-γ-Al2O3 NPs are characterized by X-ray diffraction, Fourier transform-infrared spectroscopy, field emission scanning electron microscopy and photoluminescence (PL) spectra. The PL spectra of Pd-γ-Al2O3 and PdO-γ-Al2O3 NPs display visible-light emissions from 450 to 500 nm at room temperature. This work aims to study the photocatalytic degradation of organic dye pollutants, including bromocresol green (BCG), bromothymol blue, methylene blue and methyl orange using Pd-γ-Al2O3 and PdO-γ-Al2O3 NPs as potential photocatalysts. Experimental parameters, including the admitting concentration of the organic dye solution, Pd-γ-Al2O3 and PdO-γ-Al2O3 photocatalyst dosage, and pH, were varied to ascertain favorable conditions for photocatalytic degradation. The results indicate that the organic dye BCG is completely (100%) degraded in aqueous solution under ultraviolet light, compared with the other organic dyes. Furthermore, Pd-γ-Al2O3 NPs showed better photocatalytic performance than PdO-γ-Al2O3 NPs. The possible photocatalytic degradation mechanism of the organic dyes by Pd-γ-Al2O3 and PdO-γ-Al2O3 photocatalysts is proposed. The studies reveal that Pd and PdO NPs anchored on the γ-Al2O3 surface are promising and effective catalysts for photocatalytic degradation of organic dyes. Mechanism of photocatalytic degradation of organic dyes by Pd/PdO NPs.![]()
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Affiliation(s)
- Avvaru Praveen Kumar
- Department of Applied Chemistry
- School of Applied Natural Science
- Adama Science and Technology University
- Adama
- Ethiopia
| | - Dinesh Bilehal
- Department of Chemistry
- Karnatak University
- Dharwad-560008
- India
| | - Aschalew Tadesse
- Department of Applied Chemistry
- School of Applied Natural Science
- Adama Science and Technology University
- Adama
- Ethiopia
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry
- School of Pharmaceutical Sciences
- Shoolini University
- Solan
- India
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15
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Collinge G, Yuk SF, Nguyen MT, Lee MS, Glezakou VA, Rousseau R. Effect of Collective Dynamics and Anharmonicity on Entropy in Heterogenous Catalysis: Building the Case for Advanced Molecular Simulations. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01501] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Greg Collinge
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Simuck F. Yuk
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Manh-Thuong Nguyen
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Mal-Soon Lee
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Vassiliki-Alexandra Glezakou
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Roger Rousseau
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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16
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A thin-felt Pd–MgO–Al2O3/Al-fiber catalyst for catalytic combustion of methane with resistance to water-vapor poisoning. J Catal 2020. [DOI: 10.1016/j.jcat.2020.01.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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18
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Hu Z, Yong X, Li D, Yang RT. Synergism between palladium and nickel on Pd-Ni/TiO2 for H2-SCR: A transient DRIFTS study. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Li G, Khim S, Chang CS, Fu C, Nandi N, Li F, Yang Q, Blake GR, Parkin S, Auffermann G, Sun Y, Muller DA, Mackenzie AP, Felser C. In Situ Modification of a Delafossite-Type PdCoO 2 Bulk Single Crystal for Reversible Hydrogen Sorption and Fast Hydrogen Evolution. ACS ENERGY LETTERS 2019; 4:2185-2191. [PMID: 31544150 PMCID: PMC6747882 DOI: 10.1021/acsenergylett.9b01527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 08/15/2019] [Indexed: 06/10/2023]
Abstract
The observation of extraordinarily high conductivity in delafossite-type PdCoO2 is of great current interest, and there is some evidence that electrons behave like a fluid when flowing in bulk crystals of PdCoO2. Thus, this material is an ideal platform for the study of the electron transfer processes in heterogeneous reactions. Here, we report the use of bulk single-crystal PdCoO2 as a promising electrocatalyst for hydrogen evolution reactions (HERs). An overpotential of only 31 mV results in a current density of 10 mA cm-2, accompanied by high long-term stability. We have precisely determined that the crystal surface structure is modified after electrochemical activation with the formation of strained Pd nanoclusters in the surface layer. These nanoclusters exhibit reversible hydrogen sorption and desorption, creating more active sites for hydrogen access. The bulk PdCoO2 single crystal with ultrahigh conductivity, which acts as a natural substrate for the Pd nanoclusters, provides a high-speed channel for electron transfer.
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Affiliation(s)
- Guowei Li
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Seunghyun Khim
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Celesta S. Chang
- Department
of Physics, Cornell University, Ithaca, New York 14853, United States
| | - Chenguang Fu
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Nabhanila Nandi
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Fan Li
- Max
Planck Institute for Microstructure Physics, 06120 Halle, Germany
| | - Qun Yang
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Graeme R. Blake
- Zernike
Institute for Advanced Materials, University
of Groningen, 9747 AG Groningen, The Netherlands
| | - Stuart Parkin
- Max
Planck Institute for Microstructure Physics, 06120 Halle, Germany
| | - Gudrun Auffermann
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Yan Sun
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - David A. Muller
- School
of Applied and Engineering Physics, Cornell
University, Ithaca, New York 14853, United
States
- Kavli
Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, New York 14853, United States
| | - Andrew P. Mackenzie
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Scottish
Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, Fife KY16 9SS, United Kingdom
| | - Claudia Felser
- Max
Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
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20
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Bergmann A, Roldan Cuenya B. Operando Insights into Nanoparticle Transformations during Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01831] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arno Bergmann
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
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21
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Li X, Tang Y, Li S, Gui Y. Spectroscopic properties and activated mechanism of NO on isolated cationic tantalum clusters: A first-principles study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 216:335-341. [PMID: 30909090 DOI: 10.1016/j.saa.2019.03.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 02/18/2019] [Accepted: 03/17/2019] [Indexed: 06/09/2023]
Abstract
The adsorption and dissociation of NO on the cationic Ta15+ cluster were investigated using the density-functional theory (DFT) calculations, and the Ta-centered bicapped hexagonal antiprism (BHA) structure of cationic Ta15+ cluster can be identified as the global minimum, which reproduces well the infrared multiple photo dissociation (IR-MPD) spectrum. Our results show that the cationic BHATa15+ cluster provides the hollow region for NO to interact effectively, and possess larger adsorption strength on the region than other sites. The density of states, charge density differences and frontier molecular orbitals were analyzed to understand the electronic properties of the stable NO-adsorbed isomers. The characteristic IR peaks of the firstly two low-lying isomers are properly assigned, in which the strongest IR peak originates from the N - O stretching vibration. For the dissociation of NO on the BHATa15+ cluster, it is found that the reaction path II easily occurs rather than path I due to small reaction barrier, and the cluster may possess the great catalytic behavior to dissociate NO molecule. The present results will inevitably stimulate future theoretical and experimental studies for the design of novel Ta-based catalytic materials for the NO dissociation.
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Affiliation(s)
- Xiaojun Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi, China.
| | - Yongqiang Tang
- School of Chemical Engineering, Xi'an University, Xi'an, China
| | - Shuna Li
- School of Chemical Engineering, Xi'an University, Xi'an, China
| | - Yangyang Gui
- School of Chemical Engineering, Xi'an University, Xi'an, China
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22
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23
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Liu L, Zakharov DN, Arenal R, Concepcion P, Stach EA, Corma A. Evolution and stabilization of subnanometric metal species in confined space by in situ TEM. Nat Commun 2018; 9:574. [PMID: 29422522 PMCID: PMC5805776 DOI: 10.1038/s41467-018-03012-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 01/09/2018] [Indexed: 12/02/2022] Open
Abstract
Understanding the behavior and dynamic structural transformation of subnanometric metal species under reaction conditions will be helpful for understanding catalytic phenomena and for developing more efficient and stable catalysts based on single atoms and clusters. In this work, the evolution and stabilization of subnanometric Pt species confined in MCM-22 zeolite has been studied by in situ transmission electron microscopy (TEM). By correlating the results from in situ TEM studies and the results obtained in a continuous fix-bed reactor, it has been possible to delimitate the factors that control the dynamic agglomeration and redispersion behavior of metal species under reaction conditions. The dynamic reversible transformation between atomically dispersed Pt species and clusters/nanoparticles during CO oxidation at different temperatures has been elucidated. It has also been confirmed that subnanometric Pt clusters can be stabilized in MCM-22 crystallites during NO reduction with CO and H2. Understanding the behavior and structural transformation of metal species under reaction conditions is instrumental for developing more efficient and stable catalysts. Here, the authors reveal the evolution and stabilization of subnanometric Pt species confined in MCM-22 zeolite using in situ transmission electron microscopy.
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Affiliation(s)
- Lichen Liu
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022, Valencia, Spain
| | - Dmitri N Zakharov
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York, 11973, USA
| | - Raul Arenal
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Mariano Esquillor Edificio I+D, 50018, Zaragoza, Spain.,ARAID Foundation, 50018, Zaragoza, Spain
| | - Patricia Concepcion
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022, Valencia, Spain
| | - Eric A Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York, 11973, USA
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022, Valencia, Spain.
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24
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Pd supported on carbon containing nickel, nitrogen and sulfur for ethanol electrooxidation. Sci Rep 2017; 7:15479. [PMID: 29133796 PMCID: PMC5684197 DOI: 10.1038/s41598-017-15060-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/06/2017] [Indexed: 11/12/2022] Open
Abstract
Carbon material containing nickel, nitrogen and sulfur (Ni-NSC) has been synthesized using metal-organic frameworks (MOFs) as precursor by annealing treatment with a size from 200 to 300 nm. Pd nanoparticles supported on the Ni-NSC (Pd/Ni-NSC) are used as electrocatalysts for ethanol oxidation in alkaline media. Due to the synergistic effect between Pd and Ni, S, N, free OH radicals can form on the surface of Ni, N and S atoms at lower potentials, which react with CH3CO intermediate species on the Pd surface to produce CH3COO− and release the active sites. On the other hand, the stronger binding force between Pd and co-doped N and S is responsible for enhancing dispersion and preventing agglomeration of the Pd nanoparticles. The Pd(20 wt%)/Ni-NSC shows better electrochemical performance of ethanol oxidation than the traditional commercial Pd(20 wt%)/C catalyst. Onset potential on the Pd(20 wt%)/Ni-NSC electrode is 36 mV more negative compared with that on the commercial Pd(20 wt%)/C electrode. The Pd(20 wt%)/Ni-NSC in this paper demonstrates to have excellent electrocatalytic properties and is considered as a promising catalyst in alkaline direct ethanol fuel cells.
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25
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High catalytic activity of Ti-porphyrin for NO reduction by CO: a first-principles study. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3146-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Nikoshvili LZ, Bykov AV, Khudyakova TE, LaGrange T, Héroguel F, Luterbacher JS, Matveeva VG, Sulman EM, Dyson PJ, Kiwi-Minsker L. Promotion Effect of Alkali Metal Hydroxides on Polymer-Stabilized Pd Nanoparticles for Selective Hydrogenation of C–C Triple Bonds in Alkynols. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01612] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Linda Zh. Nikoshvili
- Department
of Biotechnology and Chemistry, Tver Technical University, A. Nikitina
Street, 22, 170026, Tver, Russia
| | - Alexey V. Bykov
- Department
of Biotechnology and Chemistry, Tver Technical University, A. Nikitina
Street, 22, 170026, Tver, Russia
| | - Tatiana E. Khudyakova
- Department
of Biotechnology and Chemistry, Tver Technical University, A. Nikitina
Street, 22, 170026, Tver, Russia
| | | | | | | | - Valentina G. Matveeva
- Department
of Biotechnology and Chemistry, Tver Technical University, A. Nikitina
Street, 22, 170026, Tver, Russia
| | - Esther M. Sulman
- Department
of Biotechnology and Chemistry, Tver Technical University, A. Nikitina
Street, 22, 170026, Tver, Russia
| | | | - Lioubov Kiwi-Minsker
- Tver State University, Regional Technological Center, Zhelyabova Street, 33, 170100, Tver, Russia
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27
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Schafer D, Castegnaro MV, Gorgeski A, Rochet A, Briois V, Alves MCM, Morais J. Controlling the atomic distribution in PtPd nanoparticles: thermal stability and reactivity during NO abatement. Phys Chem Chem Phys 2017; 19:9974-9982. [PMID: 28362013 DOI: 10.1039/c7cp00602k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ X-ray absorption spectroscopy and mass spectrometry measurements were employed to simultaneously probe the atom specific short range order and reactivity of Pd and PtPd nanoparticles towards NO decomposition at 300 °C. The nanoparticles were synthesized by a well controlled, eco-friendly wet chemical reduction of metal salts and later supported on activated carbon. Particularly for the bimetallic PtPd samples, distinct atomic arrangements were achieved using a seeding growth method, which allowed producing a random nanoalloy, or nanoparticles with Pt- or Pd-rich core. X-ray photoelectron spectroscopy, transmission electron microscopy, and X-ray diffraction provided additional insights on their electronic, morphological and long range order structural properties. The results revealed that the higher the thermal induced atomic migration observed within the nanoparticles during thermal treatments, the least were their reactivity for NO abatement.
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Affiliation(s)
- D Schafer
- Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, 91501-970, Brazil.
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28
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Qu Q, Zhang JH, Wang J, Li QY, Xu CW, Lu X. Three-dimensional ordered mesoporous Co 3O 4 enhanced by Pd for oxygen evolution reaction. Sci Rep 2017; 7:41542. [PMID: 28134348 PMCID: PMC5278512 DOI: 10.1038/srep41542] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 12/22/2016] [Indexed: 11/09/2022] Open
Abstract
Considerable efforts have been devoted recently to design and fabrication of high performance and low cost electrocatalysts for oxygen evolution reaction (OER). However, catalytic activity of current electrocatalysts is usually restricted by high onset potential and limited active sites. Herein, we fabricated three-dimensional (3D) highly ordered mesoporous Pd-Co3O4 composite materials as excellent electrocatalysts for OER in alkaline solution with high activity and stability. Three-dimensional highly ordered mesoporous Co3O4 material was firstly synthesized using mesoporous silica KIT-6 as hard template. Then, Pd-Co3O4 nanomaterials were prepared by a simple reduction method. The as-prepared 3D mesoporous Pd-Co3O4 catalysts have ordered mesoporous structure with a high surface area of 81.0 m2 g-1. Three-dimensional highly ordered mesoporous structure can facilitate diffusion and penetration of electrolyte and oxygen. Moreover, the catalysts can also keep catalyst particles in a well dispersed condition with more catalytic active sites. Electrochemical measurements reveal that the 3D mesoporous Pd-Co3O4 catalysts exhibit superior performance in alkaline solution with low onset potential (0.415 V vs. SCE) and excellent long-duration cycling stability.
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Affiliation(s)
- Qing Qu
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 51006, China
| | - Jian-Hua Zhang
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 51006, China
| | - Jing Wang
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 51006, China
| | - Qing-Yu Li
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Chang-Wei Xu
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 51006, China
| | - Xihong Lu
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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29
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Roy A, Pal T. Silver-induced electronic drift in AgPd bimetallics: rationale for enhanced electrocatalytic activity of ethanol oxidation reaction. NEW J CHEM 2017. [DOI: 10.1039/c7nj02371e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced catalytic ethanol oxidation is mechanistically driven by the Ag-induced electronic drift from Pd in an AgPd bimetallic system.
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Affiliation(s)
- Anindita Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Tarasankar Pal
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
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30
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Peng Z, Li Z, Liu YQ, Yan S, Tong J, Wang D, Ye Y, Li S. Supported Pd nanoclusters with enhanced hydrogen spillover for NOx removal via H2-SCR: the elimination of “volcano-type” behaviour. Chem Commun (Camb) 2017; 53:5958-5961. [DOI: 10.1039/c7cc02235b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a highly dispersed Pd catalyst that efficiently eliminates the “volcano-type” behavior of NOx conversion in H2-SCR with excess O2.
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Affiliation(s)
- Zhezhe Peng
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Zongyuan Li
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Yun-Quan Liu
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Shuai Yan
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Jianing Tong
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Duo Wang
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Yueyuan Ye
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
| | - Shuirong Li
- College of Energy
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)
- Xiamen University
- Xiamen 361102
- China
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31
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Gao Y, Zhang LM, Kong CC, Yang ZM, Chen YM. NO adsorption and dissociation on palladium clusters: The importance of charged state and metal doping. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Octahedral Ni-nanocluster (Ni85) for Efficient and Selective Reduction of Nitric Oxide (NO) to Nitrogen (N2). Sci Rep 2016; 6:25590. [PMID: 27157072 PMCID: PMC4860637 DOI: 10.1038/srep25590] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/11/2016] [Indexed: 01/06/2023] Open
Abstract
Nitric oxide (NO) reduction pathways are systematically studied on a (111) facet of the octahedral nickel (Ni85) nanocluster in the presence/absence of hydrogen. Thermodynamic (reaction free energies) and kinetic (free energy barriers, and temperature dependent reaction rates) parameters are investigated to find out the most favoured reduction pathway for NO reduction. The catalytic activity of the Ni-nanocluster is investigated in greater detail toward the product selectivity (N2 vs. N2O vs. NH3). The previous theoretical (catalyzed by Pt, Pd, Rh and Ir) and experimental reports (catalyzed by Pt, Ag, Pd) show that direct N-O bond dissociation is very much unlikely due to the high-energy barrier but our study shows that the reaction is thermodynamically and kinetically favourable when catalysed by the octahedral Ni-nanocluster. The catalytic activity of the Ni-nanocluster toward NO reduction reaction is very much efficient and selective toward N2 formation even in the presence of hydrogen. However, N2O (one of the major by-products) formation is very much unlikely due to the high activation barrier. Our microkinetic analysis shows that even at high hydrogen partial pressures, the catalyst is very much selective toward N2 formation over NH3.
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33
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Hydrogenation of Mg nanofilms catalyzed by size-selected Pd nanoparticles: Observation of localized MgH2 nanodomains. J Catal 2016. [DOI: 10.1016/j.jcat.2016.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Lü J, Fu Y, Song Y, Wang D, Lü C. Temperature-dependent catalytic reduction of 4-nitrophenol based on silver nanoclusters protected by a thermo-responsive copolymer ligand. RSC Adv 2016. [DOI: 10.1039/c5ra23158b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile strategy is developed for fabricating novel nanocatalysts of Ag NCs protected with a temperature-responsive copolymer ligand containing 8-hydroxyquinoline and isopropylacrylamide segments.
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Affiliation(s)
- Jianhua Lü
- Institute of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yuqin Fu
- College of Life Sciences
- Jilin Agricultural University
- Changchun 130118
- P. R. China
| | - Yajiao Song
- Institute of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Dongmei Wang
- Institute of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Changli Lü
- Institute of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
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35
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Shao C, Liu X, Meng D, Xu Q, Guo Y, Guo Y, Zhan W, Wang L, Lu G. Catalytic performance of Co–Fe mixed oxide for NH3-SCR reaction and the promotional role of cobalt. RSC Adv 2016. [DOI: 10.1039/c6ra12025c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Co-modified iron oxide (Co-FeOx) catalysts were prepared by a citric acid method for the low temperature NH3-SCR of NO in the presence of O2.
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Affiliation(s)
- Changzhi Shao
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaofei Liu
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Dongmei Meng
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qian Xu
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yanglong Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yun Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wangcheng Zhan
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Li Wang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Guanzhong Lu
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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36
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Loiland JA, Wulfers MJ, Marinkovic NS, Lobo RF. Fe/γ-Al2O3 and Fe–K/γ-Al2O3 as reverse water-gas shift catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02111a] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe–K/Al2O3 is shown to be an effective RWGS catalyst with high CO selectivity.
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Affiliation(s)
- Jason A. Loiland
- Center for Catalytic Science and Technology
- Department of Chemical and Biomolecular Engineering
- University of Delaware
- Newark
- USA
| | - Matthew J. Wulfers
- Center for Catalytic Science and Technology
- Department of Chemical and Biomolecular Engineering
- University of Delaware
- Newark
- USA
| | | | - Raul F. Lobo
- Center for Catalytic Science and Technology
- Department of Chemical and Biomolecular Engineering
- University of Delaware
- Newark
- USA
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37
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Uchiyama T, Karita R, Nishibori M, Einaga H, Teraoka Y. Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.09.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Wang X, Wu W, Chen Z, Wang R. Bauxite-supported Transition Metal Oxides: Promising Low-temperature and SO2-tolerant Catalysts for Selective Catalytic Reduction of NOx. Sci Rep 2015; 5:9766. [PMID: 25988825 PMCID: PMC4437047 DOI: 10.1038/srep09766] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/17/2015] [Indexed: 12/04/2022] Open
Abstract
In order to develop low-temperature (below 200 °C) and SO2-tolerant catalysts for selective catalytic reduction (SCR) of NOx, a series of cheap M/bauxite (M = Mn, Ni and Cu) catalysts were prepared using bauxite as a support. Their SCR performances are much superior to typical V2O5/TiO2, the addition of M into bauxite results in significant promotion of NOx removal efficiency, especially at low temperature. Among the catalysts, Cu/bauxite exhibits wide temperature window over 50-400 °C, strong resistance against SO2 and H2O as well as good regeneration ability in SCR of NOx. NOx conversion is more than 80% at 50-200 °C, and N2 selectivity is more than 98%. Cu/bauxite can serve as a promising catalyst in SCR of NOx.
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Affiliation(s)
- Xiuyun Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.Tel:86-591-83711028; Fax:86-591-83714946
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Wen Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.Tel:86-591-83711028; Fax:86-591-83714946
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zhilin Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.Tel:86-591-83711028; Fax:86-591-83714946
| | - Ruihu Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.Tel:86-591-83711028; Fax:86-591-83714946
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Chinese Academy of Sciences, Fuzhou 350002, China
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39
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Yacob S, Park S, Kilos BA, Barton DG, Notestein JM. Vapor-phase ethanol carbonylation with heteropolyacid-supported Rh. J Catal 2015. [DOI: 10.1016/j.jcat.2015.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Affiliation(s)
- Ashley M. Wright
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
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41
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Huai LY, He CZ, Wang H, Wen H, Yi WC, Liu JY. NO dissociation and reduction by H 2 on Pd(1 1 1): A first-principles study. J Catal 2015. [DOI: 10.1016/j.jcat.2014.11.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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The origin of active sites for direct synthesis of H 2 O 2 on Pd/TiO 2 catalysts: Interfaces of Pd and PdO domains. J Catal 2015. [DOI: 10.1016/j.jcat.2014.10.003] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Li S, Li H, Liu J, Zhang H, Yang Y, Yang Z, Wang L, Wang B. Highly efficient degradation of organic dyes by palladium nanoparticles decorated on 2D magnetic reduced graphene oxide nanosheets. Dalton Trans 2015; 44:9193-9. [DOI: 10.1039/c5dt01036e] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a novel and effective strategy to synthesize Pd/Fe3O4-PEI-RGO nanohybrids for highly efficient degradation of organic dyes.
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Affiliation(s)
- Siliang Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Hua Li
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Jian Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Haoli Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Yanmei Yang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Zhengyin Yang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Linyun Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
| | - Baodui Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry
- and Key Laboratory of Special Function Materials and Structure Design
- Ministry of Education
- Lanzhou University Gansu
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44
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Duan L, Fu R, Xiao Z, Zhao Q, Wang JQ, Chen S, Wan Y. Activation of Aryl Chlorides in Water under Phase-Transfer Agent-Free and Ligand-Free Suzuki Coupling by Heterogeneous Palladium Supported on Hybrid Mesoporous Carbon. ACS Catal 2014. [DOI: 10.1021/cs501356h] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Linlin Duan
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Rao Fu
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Zhiguang Xiao
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Qingfei Zhao
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Jian-Qiang Wang
- Shanghai
Synchrotron Radiation Facility (SSRF), Shanghai Institute of Applied
Physics, Chinese Academy of Sciences, Shanghai, 201204, P. R. China
| | - Shangjun Chen
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Ying Wan
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
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45
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Wang J, Chen H, Hu Z, Yao M, Li Y. A Review on the Pd-Based Three-Way Catalyst. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2014. [DOI: 10.1080/01614940.2014.977059] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Dianat A, Seriani N, Ciacchi LC, Bobeth M, Cuniberti G. DFT study of reaction processes of methane combustion on PdO(100). Chem Phys 2014. [DOI: 10.1016/j.chemphys.2014.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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Zhou Y, Lawrence NJ, Wu TS, Liu J, Kent P, Soo YL, Cheung CL. Pd/CeO2−xNanorod Catalysts for CO Oxidation: Insights into the Origin of Their Regenerative Ability at Room Temperature. ChemCatChem 2014. [DOI: 10.1002/cctc.201402243] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Erickson EM, Oruc ME, Wetzel DJ, Cason MW, Hoang TTH, Small MW, Li D, Frenkel AI, Gewirth AA, Nuzzo RG. A comparison of atomistic and continuum approaches to the study of bonding dynamics in electrocatalysis: microcantilever stress and in situ EXAFS observations of platinum bond expansion due to oxygen adsorption during the oxygen reduction reaction. Anal Chem 2014; 86:8368-75. [PMID: 25066179 DOI: 10.1021/ac5019149] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Microcantilever stress measurements are examined to contrast and compare their attributes with those from in situ X-ray absorption spectroscopy to elucidate bonding dynamics during the oxygen reduction reaction (ORR) on a Pt catalyst. The present work explores multiple atomistic catalyst properties that notably include features of the Pt-Pt bonding and changes in bond strains that occur upon exposure to O2 in the electrochemical environment. The alteration of the Pt electronic and physical structures due to O2 exposure occurs over a wide potential range (1.2 to 0.4 V vs normal hydrogen electrode), a range spanning potentials where Pt catalyzes the ORR to those where Pt-oxide forms and all ORR activity ceases. We show that Pt-Pt surface bond strains due to oxygen interactions with Pt-Pt bonds are discernible at macroscopic scales in cantilever-based bending measurements of Pt thin films under O2 and Ar. Complementary extended X-ray absorption fine structure (EXAFS) measurements of nanoscale Pt clusters supported on carbon provide an estimate of the magnitude and direction of the in-operando bond strains. The data show that under O2 the M-M bonds elongate as compared to an N2 atmosphere across a broad range of potentials and ORR rates, an interfacial bond expansion that falls within a range of 0.23 (±0.15)% to 0.40 (±0.20)%. The EXAFS-measured Pt-Pt bond strains correspond to a stress thickness and magnitude that is well matched to the predictions of a mechanics mode applied to experimentally determined data obtained via the cantilever bending method. The data provide new quantitative understandings of bonding dynamics that will need to be considered in theoretical treatments of ORR catalysis and substantiate the subpicometer resolution of electrochemically mediated bond strains detected on the macroscale.
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Affiliation(s)
- Evan M Erickson
- Department of Chemistry, University of Illinois , Urbana, Illinois 61801, United States
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49
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Lira E, Merte LR, Behafarid F, Ono LK, Zhang L, Roldan Cuenya B. Role and Evolution of Nanoparticle Structure and Chemical State during the Oxidation of NO over Size- and Shape-Controlled Pt/γ-Al2O3 Catalysts under Operando Conditions. ACS Catal 2014. [DOI: 10.1021/cs500137r] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. Lira
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - L. R. Merte
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - F. Behafarid
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - L. K. Ono
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - L. Zhang
- Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - B. Roldan Cuenya
- Department
of Physics, Ruhr University Bochum, 44780 Bochum, Germany
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50
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Mahato SK, Ul Islam R, Acharya C, Witcomb MJ, Mallick K. Polymer-Stabilized Palladium Nanoparticles for the Chemoselective Transfer Hydrogenation of α,β-Unsaturated Carbonyls: Single-Step Bottom-Up Approach. ChemCatChem 2014. [DOI: 10.1002/cctc.201300985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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