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Catalytic Oxidation of Propane and Carbon Monoxide by Pd Nanoparticles on Mn/TiO2 Catalysts. Catal Letters 2023. [DOI: 10.1007/s10562-023-04285-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
AbstractThe present work shows experimental results on the catalytic oxidation of C3H8 and CO by Pd nanoparticles supported on MnOx/TiO2 synthesized by the sol–gel method. The results show a strong interaction between Pd and MnOx/TiO2; likewise, the annealing temperature of the TiO2 support modified the catalytic properties of the Pd–MnOx/TiO2 catalyst. In this line, the catalysts with 1 and 2 wt% of Pd loading supported on MnOx/TiO2 showed outstanding catalytic activity oxidizing C3H8 and CO within two temperature intervals: 200–400 °C and 25–200 °C, respectively. The Pd–MnOx/TiO2 catalyst also displayed very high stability during long-term tests and the addition of Pd nanoparticles reduced greatly the oxidation temperature of MnOx/TiO2. The outcomes revealed that the Pd–Mn interaction promoted the formation of new Pd0/Pd2+ active sites as well as the formation of oxygen vacancies and reduced Ti4+ to Ti3+ species, which led to the improvement of the Mn3+ and Mn4+ redox features, thus boosting the catalytic oxidation capacity of the Pd–MnOx/TiO2 catalyst.
Graphical Abstract
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2
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Matsuyama T, Yatabe T, Yabe T, Yamaguchi K. Decarbonylation of 1,2-Diketones to Diaryl Ketones via Oxidative Addition Enabled by an Electron-Deficient Au–Pd Nanoparticle Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03729] [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)
- Takehiro Matsuyama
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takafumi Yatabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tomohiro Yabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuya Yamaguchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Li C, Zhu H, Guo Y, Ye S, Wang T, Fu Y, Zhang X. Hydrogen-Induced Aggregation of Au@Pd Nanoparticles for Eye-Readable Plasmonic Hydrogen Sensors. ACS Sens 2022; 7:2778-2787. [PMID: 36073785 DOI: 10.1021/acssensors.2c01471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Plasmonic materials provide a promising platform for optical hydrogen detection, but their sensitivities remain limited. Herein, a new type of eye-readable H2 sensor based on Au@Pd core-shell nanoparticle arrays (NAs) is reported. After exposed to 2% H2, Au@Pd (16/2) NAs demonstrate a dramatic decrease in the optical extinction intensity, along with an obvious color change from turquoise to gray. Experimental results and theoretical calculations prove that the huge optical change resulted from the H2-induced aggregation of Au@Pd nanoparticles (NPs), which remarkably alters the plasmon coupling effect between NPs. Moreover, we optimize the sensing behavior from two aspects. The first is selecting appropriate substrates (either rigid glass substrate or flexible polyethylene terephthalate substrate) to offer moderate adhesion force to NAs, ensuring an efficient aggregation of Au@Pd NPs upon H2 exposure. The second is adjusting the Pd shell thickness to control the extent of NP aggregation and thus the detection range of the as-prepared sensors. This work highlights the advantage of designing eye-readable plasmonic H2 sensors from the aspect of tuning the interparticle plasmonic coupling in NP assemblies. Au@Pd NAs presented here have several advantages in terms of simple fabrication method, eye-readability in air background at room temperature, tunable detection range, and high cost-effectiveness.
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Affiliation(s)
- Chao Li
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
| | - Huili Zhu
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
| | - Yu Guo
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
| | - Shunsheng Ye
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, People's Republic of China
| | - Tieqiang Wang
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
| | - Yu Fu
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
| | - Xuemin Zhang
- College of Sciences, Northeastern University, Shenyang 110189, People's Republic of China
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Faezeh Ghaderi, Samavat F, Tafreshi MJ, Kiani M. Physical Properties of Au/Pd-on-glass Thin Films on Glasses Prepared by Electron Beam Evaporation. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2021. [DOI: 10.1134/s1990793121090062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Bukhtiyarov AV, Prosvirin IP, Panafidin MA, Fedorov AY, Klyushin AY, Knop-Gericke A, Zubavichus YV, Bukhtiyarov VI. Near-Ambient Pressure XPS and MS Study of CO Oxidation over Model Pd-Au/HOPG Catalysts: The Effect of the Metal Ratio. NANOMATERIALS 2021; 11:nano11123292. [PMID: 34947641 PMCID: PMC8703420 DOI: 10.3390/nano11123292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 11/16/2022]
Abstract
In this study, the dependence of the catalytic activity of highly oriented pyrolytic graphite (HOPG)-supported bimetallic Pd-Au catalysts towards the CO oxidation based on the Pd/Au atomic ratio was investigated. The activities of two model catalysts differing from each other in the initial Pd/Au atomic ratios appeared as distinctly different in terms of their ignition temperatures. More specifically, the PdAu-2 sample with a lower Pd/Au surface ratio (~0.75) was already active at temperatures less than 150 °C, while the PdAu-1 sample with a higher Pd/Au surface ratio (~1.0) became active only at temperatures above 200 °C. NAP XPS revealed that the exposure of the catalysts to a reaction mixture at RT induces the palladium surface segregation accompanied by an enrichment of the near-surface regions of the two-component Pd-Au alloy nanoparticles with Pd due to adsorption of CO on palladium atoms. The segregation extent depends on the initial Pd/Au surface ratio. The difference in activity between these two catalysts is determined by the presence or higher concentration of specific active Pd sites on the surface of bimetallic particles, i.e., by the ensemble effect. Upon cooling the sample down to room temperature, the reverse redistribution of the atomic composition within near-surface regions occurs, which switches the catalyst back into inactive state. This observation strongly suggests that the optimum active sites emerge under reaction conditions exclusively, involving both high temperature and a reactive atmosphere.
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Affiliation(s)
- Andrey V. Bukhtiyarov
- Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, 630559 Kol’tsovo, Russia; (M.A.P.); (Y.V.Z.)
- Correspondence: ; Tel.: +7-383-326-97-87
| | - Igor P. Prosvirin
- Department of Physicochemical Techniques, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (I.P.P.); (A.Y.F.); (V.I.B.)
| | - Maxim A. Panafidin
- Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, 630559 Kol’tsovo, Russia; (M.A.P.); (Y.V.Z.)
| | - Alexey Yu. Fedorov
- Department of Physicochemical Techniques, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (I.P.P.); (A.Y.F.); (V.I.B.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Alexander Yu. Klyushin
- Inorganic Chemistry Department, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany; (A.Y.K.); (A.K.-G.)
- BESSY II, Helmholtz Center for Materials and Energy, 12489 Berlin, Germany
| | - Axel Knop-Gericke
- Inorganic Chemistry Department, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany; (A.Y.K.); (A.K.-G.)
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, 45470 Mülheim an der Ruhr, Germany
| | - Yan V. Zubavichus
- Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, 630559 Kol’tsovo, Russia; (M.A.P.); (Y.V.Z.)
| | - Valery I. Bukhtiyarov
- Department of Physicochemical Techniques, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (I.P.P.); (A.Y.F.); (V.I.B.)
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Filie A, Shirman T, Foucher AC, Stach EA, Aizenberg M, Aizenberg J, Friend CM, Madix RJ. Dilute Pd-in-Au alloy RCT-SiO2 catalysts for enhanced oxidative methanol coupling. J Catal 2021. [DOI: 10.1016/j.jcat.2021.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Yoon J, Cao Z, Raju RK, Wang Y, Burnley R, Gellman AJ, Barati Farimani A, Ulissi ZW. Deep reinforcement learning for predicting kinetic pathways to surface reconstruction in a ternary alloy. MACHINE LEARNING: SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1088/2632-2153/ac191c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Abstract
The majority of computational catalyst design focuses on the screening of material components and alloy composition to optimize selectivity and activity for a given reaction. However, predicting the metastability of the alloy catalyst surface at realistic operating conditions requires an extensive sampling of possible surface reconstructions and their associated kinetic pathways. We present CatGym, a deep reinforcement learning (DRL) environment for predicting the thermal surface reconstruction pathways and their associated kinetic barriers in crystalline solids under reaction conditions. The DRL agent iteratively changes the positions of atoms in the near-surface region to generate kinetic pathways to accessible local minima involving changes in the surface compositions. We showcase our agent by predicting the surface reconstruction pathways of a ternary Ni3Pd3Au2(111) alloy catalyst. Our results show that the DRL agent can not only explore more diverse surface compositions than the conventional minima hopping method, but also generate the kinetic surface reconstruction pathways. We further demonstrate that the kinetic pathway to a global minimum energy surface composition and its associated transition state predicted by our agent is in good agreement with the minimum energy path predicted by nudged elastic band calculations.
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Sharma D, Thakur KK, Gupta N. Pd‐Au Supported Reduced Graphene Oxide Catalyst for Carbon‐ Hydrogen Bond Activation in Benzene. ChemistrySelect 2021. [DOI: 10.1002/slct.202101988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Deepika Sharma
- Department: School of Advanced Chemical Sciences Institution: Shoolini University Solan Post box No. 9, Head Post Office Solan 173229, H.P. India
| | - Kamal Kishor Thakur
- Department: Chemistry Institution: Chandigarh University Gharuan 140413 Punjab India
| | - Neeraj Gupta
- Department: School of Advanced Chemical Sciences Institution: Shoolini University Solan Post box No. 9, Head Post Office Solan 173229, H.P. India
- Department: Chemistry and Chemical Sciences Institution: Central University of Himachal Pradesh Dharamshala 176206, H.P. India
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Ricciardulli T, Gorthy S, Adams JS, Thompson C, Karim AM, Neurock M, Flaherty DW. Effect of Pd Coordination and Isolation on the Catalytic Reduction of O 2 to H 2O 2 over PdAu Bimetallic Nanoparticles. J Am Chem Soc 2021; 143:5445-5464. [PMID: 33818086 DOI: 10.1021/jacs.1c00539] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The direct synthesis of hydrogen peroxide (H2 + O2 → H2O2) may enable low-cost H2O2 production and reduce environmental impacts of chemical oxidations. Here, we synthesize a series of Pd1Aux nanoparticles (where 0 ≤ x ≤ 220, ∼10 nm) and show that, in pure water solvent, H2O2 selectivity increases with the Au to Pd ratio and approaches 100% for Pd1Au220. Analysis of in situ XAS and ex situ FTIR of adsorbed 12CO and 13CO show that materials with Au to Pd ratios of ∼40 and greater expose only monomeric Pd species during catalysis and that the average distance between Pd monomers increases with further dilution. Ab initio quantum chemical simulations and experimental rate measurements indicate that both H2O2 and H2O form by reduction of a common OOH* intermediate by proton-electron transfer steps mediated by water molecules over Pd and Pd1Aux nanoparticles. Measured apparent activation enthalpies and calculated activation barriers for H2O2 and H2O formation both increase as Pd is diluted by Au, even beyond the complete loss of Pd-Pd coordination. These effects impact H2O formation more significantly, indicating preferential destabilization of transition states that cleave O-O bonds reflected by increasing H2O2 selectivities (19% on Pd; 95% on PdAu220) but with only a 3-fold reduction in H2O2 formation rates. The data imply that the transition states for H2O2 and H2O formation pathways differ in their coordination to the metal surface, and such differences in site requirements require that we consider second coordination shells during the design of bimetallic catalysts.
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Affiliation(s)
- Tomas Ricciardulli
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Sahithi Gorthy
- Department of Chemical and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jason S Adams
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Coogan Thompson
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Ayman M Karim
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Matthew Neurock
- Department of Chemical and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - David W Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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Khawaji M, Graça I, Ware E, Chadwick D. Catalytic oxidation of glucose over highly stable AuxPdy NPs immobilised on ceria nanorods. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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11
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Félix LL, Porcel JM, Aragón FFH, Pacheco-Salazar DG, Sousa MH. Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04456-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
AbstractWe describe a simple method for the preparation of gold-decorated silica (SiO2) nanoparticles (NPs) by the in situ precipitation method using simple BH4− ions reduction as a procedure, where BH4− ions are adsorbed onto PEI-functionalized SiO2 NPs for stabilizing and reducing gold ions onto PEI-SiO2 surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO2 core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO2 NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.
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Liu Y, Li W, Zhao G, Qin G, Li Y, Liu Y. Self-driven microstructural evolution of Au@Pd core-shell nanoparticles for greatly enhanced catalytic performance during methanol electrooxidation. NANOSCALE 2021; 13:3528-3542. [PMID: 33491724 DOI: 10.1039/d0nr07135h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The lack of direct insight into the microstructural evolution of catalytic materials under electrochemical polarization has inhibited the development of heterogeneous catalysts. By investigating a typical Au@Pd core-shell nanostructure, the present study discloses the microstructural evolution of heterogeneous catalytic materials during the methanol electrooxidation reaction (MOR). The electrocatalytic activity of the as-prepared Au@Pd_core-shell nanoparticles continuously increased during the first 100 successive voltammetry cycles of the MOR. Microstructural characterization studies revealed that during the MOR, an Au/Pd mixed bimetallic shell was formed by the self-driven microstructural evolution of the Au@Pd_core-shell nanoparticles. Both the experimental and calculation results indicated that the Au/Pd mixed bimetallic shell reduced the binding strength of OH- and CO on the catalyst surface. The exposed Au atoms in the shell region also produced large-scale reactive ˙OH radicals that facilitated the oxidative removal of the adsorbed carbonaceous species from the adjacent Pd active sites.
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Affiliation(s)
- Yaxing Liu
- Shanxi Key Laboratory of Nano Functional Composite Materials, North University of China, Taiyuan, 030051, P. R. China.
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Pd Single-Atom Sites on the Surface of PdAu Nanoparticles: A DFT-Based Topological Search for Suitable Compositions. NANOMATERIALS 2021; 11:nano11010122. [PMID: 33430403 PMCID: PMC7828025 DOI: 10.3390/nano11010122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/23/2020] [Accepted: 01/04/2021] [Indexed: 11/25/2022]
Abstract
Structure of model bimetallic PdAu nanoparticles is analyzed aiming to find Pd:Au ratios optimal for existence of Pd1 single-atom surface sites inside outer Au atomic shell. The analysis is performed using density-functional theory (DFT) calculations and topological approach based on DFT-parameterized topological energy expression. The number of the surface Pd1 sites in the absence of adsorbates is calculated as a function of Pd concentration inside the particles. At low Pd contents none of the Pd atoms emerge on the surface in the lowest-energy chemical orderings. However, surface Pd1 sites become stable, when Pd content inside a Pd-Au particle reaches ca. 60%. Further Pd content increase up to almost pure Pd core is accompanied by increased concentration of surface Pd atoms, mostly as Pd1 sites, although larger Pd ensembles as dimers and linear trimers are formed as well. Analysis of the chemical orderings inside PdAu nanoparticles at different Pd contents revealed that enrichment of the subsurface shell by Pd with predominant occupation of its edge positions precedes emergence of Pd surface species.
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Al-Nayili A, Albdiry M. AuPd bimetallic nanoparticles supported on reduced graphene oxide nanosheets as catalysts for hydrogen generation from formic acid under ambient temperature. NEW J CHEM 2021. [DOI: 10.1039/d1nj01658j] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Monometallic Au and Pd, and bimetallic AuxPdy (x/y mole ratio Au/Pd: 3 : 1, 1 : 1 and 1 : 3) catalysts supported on reduced graphene oxide (rGO) have been synthesised by the sol-immobilization method.
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Affiliation(s)
| | - Mushtaq Albdiry
- Department of Materials Engineering
- University of Al-Qadisiyah
- Iraq
- Department of Mechanical Engineering
- School of Civil and Mechanical Engineering
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15
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Kim DH, Lee E, Pak C. Effect of rare-earth elements in Pd ternary alloy catalysts on activity toward oxygen reduction reaction. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Processing Methods Used in the Fabrication of Macrostructures Containing 1D Carbon Nanomaterials for Catalysis. Processes (Basel) 2020. [DOI: 10.3390/pr8111329] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A large number of methodologies for fabrication of 1D carbon nanomaterials have been developed in the past few years and are extensively described in the literature. However, for many applications, and in particular in catalysis, a translation of the materials to a macro-structured form is often required towards their use in practical operation conditions. This review intends to describe the available methods currently used for fabrication of such macro-structures, either already applied or with potential for application in the fabrication of macro-structured catalysts containing 1D carbon nanomaterials. A review of the processing methods used in the fabrication of macrostructures containing 1D sp2 hybridized carbon nanomaterials is presented. The carbon nanomaterials here discussed include single- and multi-walled carbon nanotubes, and several types of carbon nanofibers (fishbone, platelet, stacked cup, etc.). As the processing methods used in the fabrication of the macrostructures are generally very similar for any of the carbon nanotubes or nanofibers due to their similar chemical nature (constituted by stacked ordered graphene planes), the review aggregates all under the carbon nanofiber (CNF) moniker. The review is divided into methods where the CNFs are synthesized already in the form of a macrostructure (in situ methods) or where the CNFs are previously synthesized and then further processed into the desired macrostructures (ex situ methods). We highlight in particular the advantages of each approach, including a (non-exhaustive) description of methods commonly described for in situ and ex situ preparation of the catalytic macro-structures. The review proposes methods useful in the preparation of catalytic structures, and thus a number of techniques are left out which are used in the fabrication of CNF-containing structures with no exposure of the carbon materials to reactants due to, for example, complete coverage of the CNF. During the description of the methodologies, several different macrostructures are described. A brief overview of the potential applications of such structures in catalysis is also offered herein, together with a short description of the catalytic potential of CNFs in general.
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Gebremariam TT, Chen F, Kou B, Guo L, Pan B, Wang Q, Li Z, Bian W. PdAgRu nanoparticles on polybenzimidazole wrapped CNTs for electrocatalytic formate oxidation. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136678] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Hannagan RT, Giannakakis G, Flytzani-Stephanopoulos M, Sykes ECH. Single-Atom Alloy Catalysis. Chem Rev 2020; 120:12044-12088. [DOI: 10.1021/acs.chemrev.0c00078] [Citation(s) in RCA: 286] [Impact Index Per Article: 71.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Preformed Pd-Based Nanoparticles for the Liquid Phase Decomposition of Formic Acid: Effect of Stabiliser, Support and Au–Pd Ratio. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10051752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hydrogen is one of the most promising energy carriers for the production of electricity based on fuel cell hydrogen technology. Recently, hydrogen storage chemicals, such as formic acid, have been proposed to be part of the long-term solution towards hydrogen economy for the future of our planet. Herein we report the synthesis of preformed Pd nanoparticles using colloidal methodology varying a range of specific experimental parameters, such as the amount of the stabiliser and reducing agent, nature of support and Pd loading of the support. The aforementioned parameters have shown to affect mean Pd particle size, Pd oxidation, atomic content of Pd on the surface as well as on the catalytic performance towards formic acid decomposition. Reusability studies were carried out using the most active monometallic Pd material with a small loss of activity after five uses. The catalytic performance based on the Au–Pd atomic ratio was evaluated and the optimum catalytic performance was found to be with the Au/Pd atomic ratio of 1/3, indicating that the presence of a small amount of Pd is essential to promote significantly Au activity for the liquid phase decomposition of formic acid. Thorough characterisation has been carried out by means of XPS, SEM-EDX, TEM and BET. The observed catalytic performance is discussed in terms of the structure/morphology and composition of the supported Pd and Au–Pd nanoparticles.
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Khawaji M, Chadwick D. Selective catalytic oxidation over Au-Pd/titanate nanotubes and the influence of the catalyst preparation method on the activity. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.11.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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McClure JP, Boltersdorf J, Baker DR, Farinha TG, Dzuricky N, Villegas CEP, Rocha AR, Leite MS. Structure-Property-Performance Relationship of Ultrathin Pd-Au Alloy Catalyst Layers for Low-Temperature Ethanol Oxidation in Alkaline Media. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24919-24932. [PMID: 31044596 DOI: 10.1021/acsami.9b01389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pd-containing alloys are promising materials for catalysis. Yet, the relationship of the structure-property performance strongly depends on their chemical composition, which is currently not fully resolved. Herein, we present a physical vapor deposition methodology for developing PdxAu1-x alloys with fine control over the chemical composition. We establish direct correlations between the composition and these materials' structural and electronic properties with its catalytic activity in an ethanol (EtOH) oxidation reaction. By combining X-ray diffraction (XRD) and X-ray photelectron spectroscopy (XPS) measurements, we validate that the Pd content within both bulk and surface compositions can be finely controlled in an ultrathin-film regime. Catalytic oxidation of EtOH on the PdxAu1-x electrodes presents the largest forward-sweeping current density for x = 0.73 at ∼135 mA cm-2, with the lowest onset potential and largest peak activity of 639 A gPd-1 observed for x = 0.58. Density functional theory (DFT) calculations and XPS measurements demonstrate that the valence band of the alloys is completely dominated by Pd particularly near the Fermi level, regardless of its chemical composition. Moreover, DFT provides key insights into the PdxAu1-x ligand effect, with relevant chemisorption activity descriptors probed for a large number of surface arrangements. These results demonstrate that alloys can outperform pure metals in catalytic processes, with fine control of the chemical composition being a powerful tuning knob for the electronic properties and, therefore, the catalytic activity of ultrathin PdxAu1-x catalysts. Our high-throughput experimental methodology, in connection with DFT calculations, provides a unique foundation for further materials' discovery, including machine-learning predictions for novel alloys, the development of Pd-alloyed membranes for the purification of reformate gases, binder-free ultrathin electrocatalysts for fuel cells, and room temperature lithography-based development of nanostructures for optically driven processes.
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Affiliation(s)
- Joshua P McClure
- Sensors and Electron Devices Directorate , U.S. Army Research Laboratory , Adelphi , Maryland 20783 , United States
| | - Jonathan Boltersdorf
- Sensors and Electron Devices Directorate , U.S. Army Research Laboratory , Adelphi , Maryland 20783 , United States
| | - David R Baker
- Sensors and Electron Devices Directorate , U.S. Army Research Laboratory , Adelphi , Maryland 20783 , United States
| | | | | | - Cesar E P Villegas
- Instituto de Física Teórica , Universidade Estadual Paulista , São Paulo , 01140-070 , Brazil
- Departamento de Ciencias , Universidad Privada del Norte , Avenida Andrés Belaunde cdra 10 s/n , Comas , Peru
| | - Alexandre R Rocha
- Instituto de Física Teórica , Universidade Estadual Paulista , São Paulo , 01140-070 , Brazil
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22
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Polak M, Rubinovich L. Thermal properties and segregation phenomena in transition metals and alloys: modeling based on modified cohesive-energies. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:215402. [PMID: 30780149 DOI: 10.1088/1361-648x/ab0865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In spite of free-atom electronic-relaxation contributions to transition-metal cohesive-energies, numerous studies have misused the latter instead of using the solid-state interatomic bond-energy in modeling bulk and surface properties. This work reveals that eliminating the free-atom contributions from experimental cohesive-energies leads to highly accurate linear correlations of the resultant bond-energies with melting temperatures and enthalpies, as well as with inverse thermal-expansion coefficients, specifically for the fcc transition-metals. Likewise, predictions of surface segregation phenomena in Cu-Pd and Au-Pd alloys on the basis of the modified energetics are in much better agreement with reported low-energy ion scattering spectroscopy (LEISS) experimental results, as compared to the use of cohesive-energy values. A last demonstration of the problem and its solution involves the significant impact of the modification on segregation (separation) phase transitions in Cu-Ni model nanoparticles.
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Affiliation(s)
- Micha Polak
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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23
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Kim JS, Kim HK, Kim SH, Kim I, Yu T, Han GH, Lee KY, Lee JC, Ahn JP. Catalytically Active Au Layers Grown on Pd Nanoparticles for Direct Synthesis of H 2O 2: Lattice Strain and Charge-Transfer Perspective Analyses. ACS NANO 2019; 13:4761-4770. [PMID: 30943005 DOI: 10.1021/acsnano.9b01394] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite its effectiveness in improving the properties of materials, strain engineering has not yet been employed to endow catalytic characteristics to apparently nonactive metals. This limitation can be overcome by controlling simultaneously lattice strains and charge transfer originated from the epitaxially prepared bimetallic core-shell structure. Here, we report the experimental results of the direct H2O2 synthesis enabled by a strained Au layer grown on Pd nanoparticles. This system can benefit the individual catalytic properties of each involved material, and the heterostructured catalyst displays an improved productivity for the direct synthesis of H2O2 by ∼100% relative to existing Pd catalysts. This is explained here by exploring the individual effects of lattice strain and charge transfer on the alteration of the electronic structure of ultrathin Au layers grown on Pd nanoparticles. The approach used in this study can be viewed as a means of designing catalysts with multiple catalytic functions.
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Affiliation(s)
- Jin-Soo Kim
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , South Korea
- Advanced Analysis Center , Korea Institute of Science and Technology , Seoul 02792 , South Korea
| | - Hong-Kyu Kim
- Advanced Analysis Center , Korea Institute of Science and Technology , Seoul 02792 , South Korea
| | - Sung-Hoon Kim
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , South Korea
- Advanced Analysis Center , Korea Institute of Science and Technology , Seoul 02792 , South Korea
| | - Inho Kim
- Department of Chemical Engineering , Kyung Hee University , Yongin 17140 , South Korea
| | - Taekyung Yu
- Department of Chemical Engineering , Kyung Hee University , Yongin 17140 , South Korea
| | - Geun-Ho Han
- Department of Chemical and Biological Engineering , Korea University , Seoul 02841 , South Korea
| | - Kwan-Young Lee
- Department of Chemical and Biological Engineering , Korea University , Seoul 02841 , South Korea
| | - Jae-Chul Lee
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , South Korea
| | - Jae-Pyoung Ahn
- Advanced Analysis Center , Korea Institute of Science and Technology , Seoul 02792 , South Korea
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24
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Panafidin MA, Bukhtiyarov AV, Prosvirin IP, Chetyrin IA, Bukhtiyarov VI. Model Bimetallic Pd–Ag/HOPG Catalysts: An XPS and STM Study. KINETICS AND CATALYSIS 2019. [DOI: 10.1134/s0023158418060113] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Li Y, Huang J, Zheng Y, Chen M. Surface Compositions of Oxide Supported Bimetallic Catalysts: A Compared Study by High-Sensitivity Low Energy Ion Scattering Spectroscopy and X-Ray Photoemission Spectroscopy. CHEM REC 2019; 19:1432-1443. [PMID: 30663239 DOI: 10.1002/tcr.201800169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/25/2018] [Indexed: 12/29/2022]
Abstract
It is well known that there is a critical relationship between the surface composition and catalytic performance for a bimetallic catalyst. However, in most cases, the surface composition is obviously different from that of the bulk. Moreover, the surface is normally reconstructed under reaction conditions. In this personal account, our recent progresses in determining the surface compositions of oxide supported bimetal catalysts by high-sensitivity low energy ion scattering spectroscopy (HS-LEIS) and X-ray photoemission spectroscopy (XPS) are summarized. Phase diagrams of the surface compositions under various conditions as a function of the bulk composition are established and compared. It is found that oxidation induces de-alloying and enrichment of PdO, CuO, SnO2 on the surface, while H2 reduction results in re-alloying. The addition of the second component not only modifies the nature of the active site, but also varies the dispersion of the active components. The support effects are discussed. The compared studies reveal that HS-LEIS can achieve a more reliable surface composition for oxide supported catalysts.
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Affiliation(s)
- Yangyang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P.R. China
| | - Junjie Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P.R. China
| | - Yanping Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P.R. China
| | - Mingshu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P.R. China
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26
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Boosting the Characterization of Heterogeneous Catalysts for H2O2 Direct Synthesis by Infrared Spectroscopy. Catalysts 2019. [DOI: 10.3390/catal9010030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Infrared (IR) spectroscopy is among the most powerful spectroscopic techniques available for the morphological and physico-chemical characterization of catalytic systems, since it provides information on (i) the surface sites at an atomic level, (ii) the nature and structure of the surface or adsorbed species, as well as (iii) the strength of the chemical bonds and (iv) the reaction mechanism. In this review, an overview of the main contributions that have been determined, starting from IR absorption spectroscopy studies of catalytic systems for H2O2 direct synthesis, is given. Which kind of information can be extracted from IR data? IR spectroscopy detects the vibrational transitions induced in a material by interaction with an electromagnetic field in the IR range. To be IR active, a change in the dipole moment of the species must occur, according to well-defined selection rules. The discussion will be focused on the advancing research in the use of probe molecules to identify (and possibly, quantify) specific catalytic sites. The experiments that will be presented and discussed have been carried out mainly in the mid-IR frequency range, between approximately 700 and 4000 cm−1, in which most of the molecular vibrations absorb light. Some challenging possibilities of utilizing IR spectroscopy for future characterization have also been envisaged.
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27
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Muhammad Y, Rahman AU, Rashid HU, Sahibzada M, Subhan S, Tong Z. Hydrodesulfurization of dibenzothiophene using Pd-promoted Co–Mo/Al2O3and Ni–Mo/Al2O3catalysts coupled with ionic liquids at ambient operating conditions. RSC Adv 2019; 9:10371-10385. [PMID: 35520937 PMCID: PMC9062605 DOI: 10.1039/c9ra00095j] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 03/20/2019] [Indexed: 11/21/2022] Open
Abstract
Sulfur compounds in fuel oils are a major source of atmospheric pollution. This study is focused on the hydrodesulfurization (HDS) of dibenzothiophene (DBT) via the coupled application of 0.5 wt% Pd-loaded Co–Mo/Al2O3 and Ni–Mo/Al2O3 catalysts with ionic liquids (ILs) at ambient temperature (120 °C) and pressure (1 MPa H2). The enhanced HDS activity of the solid catalysts coupled with [BMIM]BF4, [(CH3)4N]Cl, [EMIM]AlCl4, and [(n-C8H17)(C4H9)3P]Br was credited to the synergism between hydrogenation by the former and extractive desulfurization and better H2 transport by the latter, which was confirmed by DFT simulation. The Pd-loaded catalysts ranked highest by activity i.e. Pd–Ni–Mo/Al2O3 > Pd–Co–Mo/Al2O3 > Ni–Mo/Al2O3 > Co–Mo/Al2O3. With mild experimental conditions of 1 MPa H2 pressure and 120 °C temperature and an oil : IL ratio of 10 : 3.3, DBT conversion was enhanced from 21% (by blank Ni–Mo/Al2O3) to 70% by Pd–Ni–Mo/Al2O3 coupled with [(n-C8H17)(C4H9)3P]Br. The interaction of polarizable delocalized bonds (in DBT) and van der Waals forces influenced the higher solubility in ILs and hence led to higher DBT conversion. The IL was recycled four times with minimal loss of activity. Fresh and spent catalysts were characterized by FESEM, ICP-MS, EDX, XRD, XPS and BET surface area techniques. GC-MS analysis revealed biphenyl as the major HDS product. This study presents a considerable advance to the classical HDS processes in terms of mild operating conditions, cost-effectiveness, and simplified mechanization, and hence can be envisaged as an alternative approach for fuel oil processing. Synergistic application of ionic liquids with Pd loaded Co–Mo@Al2O3 and Ni–Mo@Al2O3 catalysts for efficient hydrodesulfurization of dibenzothiophene at ambient conditions.![]()
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Affiliation(s)
- Yaseen Muhammad
- School of Chemistry and Chemical Engineering
- Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- Guangxi University
- P. R. China
- Institute of Chemical Sciences
| | - Ata Ur Rahman
- Institute of Chemical Sciences
- University of Peshawar
- Peshawar
- Pakistan
| | - Haroon Ur Rashid
- School of Chemistry and Chemical Engineering
- Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- Guangxi University
- P. R. China
| | | | - Sidra Subhan
- School of Chemistry and Chemical Engineering
- Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- Guangxi University
- P. R. China
- Institute of Chemical Sciences
| | - Zhangfa Tong
- School of Chemistry and Chemical Engineering
- Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- Guangxi University
- P. R. China
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28
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Wu Z, Tang M, Li X, Luo S, Yuan W, Zhu B, Zhang H, Yang H, Gao Y, Wang Y. Surface faceting and compositional evolution of Pd@Au core–shell nanocrystals during in situ annealing. Phys Chem Chem Phys 2019; 21:3134-3139. [DOI: 10.1039/c8cp07576j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A step-wise transformation process of a Pd@Au nanoparticle both structurally and compositionally was observed. Monte Carlo simulation was used to explain the results.
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29
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Bukhtiyarov AV, Prosvirin IP, Chetyrin IA, Bukhtiyarov VI. Using Sr-XPS to Study the Preparation Features of M-Au/HOPG Model Catalysts (M = Pd, Ag, Cu). J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619010062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Kim SM, Mun JH, Lee SW, An H, Kim HY, Kim SO, Park JY. Compositional effect of two-dimensional monodisperse AuPd bimetallic nanoparticle arrays fabricated by block copolymer nanopatterning on catalytic activity of CO oxidation. Chem Commun (Camb) 2018; 54:13734-13737. [PMID: 30456410 DOI: 10.1039/c8cc07963c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a straightforward approach for fabricating AuPd nanocatalysts based on self-assembled block copolymer nanopatterning. CO oxidation was carried out on AuPd alloy nanoparticles and the activity increased with increasing Pd content; this synergistic activity can be precisely tuned by varying the chemical composition. Theoretical calculations suggest that Pd clusters are required to bind and dissociate O2 for oxidation of coadsorbed CO molecules. Our results suggest that the geometric configuration of the Pd atoms on the surface are a key factor in the catalytic activity.
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Affiliation(s)
- Sun Mi Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
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31
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Kluenker M, Connolly BM, Marolf DM, Nawaz Tahir M, Korschelt K, Simon P, Köhler U, Plana-Ruiz S, Barton B, Panthöfer M, Kolb U, Tremel W. Controlling the Morphology of Au–Pd Heterodimer Nanoparticles by Surface Ligands. Inorg Chem 2018; 57:13640-13652. [DOI: 10.1021/acs.inorgchem.8b02236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Kluenker
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Bethany M. Connolly
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - David M. Marolf
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Muhammad Nawaz Tahir
- Department of Chemistry, King Fahd University of Petroleum and Minerals, P.O. Box 5048, Dhahran 31261, Kingdom of Saudi Arabia
| | - Karsten Korschelt
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Paul Simon
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Uta Köhler
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Sergi Plana-Ruiz
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- LENS, MIND/IN2UB, Electronics and Biomedical Engineering, Faculty of Physics, University of Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Catalonia, Spain
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, 64287 Darmstadt, Germany
| | - Bastian Barton
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Division of Plastics, Fraunhofer-Institute for Structural Durability and System Reliability LBF, Schlossgartenstraße 6, 64289 Darmstadt, Germany
| | - Martin Panthöfer
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ute Kolb
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, 64287 Darmstadt, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
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32
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Jedsukontorn T, Saito N, Hunsom M. Photoinduced Glycerol Oxidation over Plasmonic Au and AuM (M = Pt, Pd and Bi) Nanoparticle-Decorated TiO₂ Photocatalysts. NANOMATERIALS 2018; 8:nano8040269. [PMID: 29690645 PMCID: PMC5923599 DOI: 10.3390/nano8040269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/14/2018] [Accepted: 04/19/2018] [Indexed: 01/23/2023]
Abstract
In this study, sol-immobilization was used to prepare gold nanoparticle (Au NP)-decorated titanium dioxide (TiO2) photocatalysts at different Au weight % (wt. %) loading (Aux/TiO2, where x is the Au wt. %) and Au–M NP-decorated TiO2 photocatalysts (Au3M3/TiO2), where M is bismuth (Bi), platinum (Pt) or palladium (Pd) at 3 wt. %. The Aux/TiO2 photocatalysts exhibited a stronger visible light absorption than the parent TiO2 due to the localized surface plasmon resonance effect. Increasing the Au content from 1 wt. % to 7 wt. % led to increased visible light absorption due to the increasing presence of defective structures that were capable of enhancing the photocatalytic activity of the as-prepared catalyst. The addition of Pt and Pd coupled with the Au3/TiO2 to form Au3M3/TiO2 improved the photocatalytic activity of the Au3/TiO2 photocatalyst by maximizing their light-absorption property. The Au3/TiO2, Au3Pt3/TiO2 and Au3Pd3/TiO2 photocatalysts promoted the formation of glyceraldehyde from glycerol as the principle product, while Au3Bi3/TiO2 facilitated glycolaldehyde formation as the major product. Among all the prepared photocatalysts, Au3Pd3/TiO2 exhibited the highest photocatalytic activity with a 98.75% glycerol conversion at 24 h of reaction time.
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Affiliation(s)
- Trin Jedsukontorn
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Nagahiro Saito
- Graduate School of Engineering & Green Mobility Collaborative Research Center, Nagoya University, Nagoya 464-8603, Japan.
| | - Mali Hunsom
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology (PETRO-MAT), Chulalongkorn University, Bangkok 10330, Thailand.
- Associate Fellow of Royal Society of Thailand (AFRST), Sanam Suea Pa, Dusit, Bangkok 10300, Thailand.
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33
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Ding D, Xu X, Tian P, Liu X, Xu J, Han YF. Promotional effects of Sb on Pd-based catalysts for the direct synthesis of hydrogen peroxide at ambient pressure. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(18)63031-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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34
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Han S, Mullins CB. Surface Alloy Composition Controlled O2 Activation on Pd–Au Bimetallic Model Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00140] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Kareem H, Shan S, Lin F, Li J, Wu Z, Prasai B, O'Brien CP, Lee IC, Tran DT, Yang L, Mott D, Luo J, Petkov V, Zhong CJ. Evolution of surface catalytic sites on thermochemically-tuned gold-palladium nanoalloys. NANOSCALE 2018; 10:3849-3862. [PMID: 29417115 DOI: 10.1039/c7nr08748a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoscale alloying constitutes an increasingly-important pathway for design of catalysts for a wide range of technologically important reactions. A key challenge is the ability to control the surface catalytic sites in terms of the alloying composition, thermochemical treatment and phase in correlation with the catalytic properties. Herein we show novel findings of the nanoscale evolution of surface catalytic sites on thermochemically-tuned gold-palladium nanoalloys by probing CO adsorption and oxidation using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) technique. In addition to the bimetallic composition and the support, the surface sites are shown to depend strongly on the thermochemical treatment condition, demonstrating that the ratio of three-fold vs. bridge or atop Pd sites is greatly reduced by thermochemical treatment under hydrogen in comparison with that under oxygen. This type of surface reconstruction is further supported by synchrotron high-energy X-ray diffraction coupled to atomic pair distribution function (HE-XRD/PDF) analysis of the nanoalloy structure, revealing an enhanced degree of random alloying for the catalysts thermochemically treated under hydrogen. The nanoscale alloying and surface site evolution characteristics were found to correlate strongly with the catalytic activity of CO oxidation. These findings have significant implications for the nanoalloy-based design of catalytic synergy.
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Affiliation(s)
- Haval Kareem
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA.
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36
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Cho A, Byun S, Kim BM. AuPd−Fe3
O4
Nanoparticle Catalysts for Highly Selective, One-Pot Cascade Nitro-Reduction and Reductive Amination. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701462] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ahra Cho
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
| | - Sangmoon Byun
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
- The Research Institute of Basic Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
| | - B. Moon Kim
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
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37
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Li Y, Hu J, Ma D, Zheng Y, Chen M, Wan H. Disclosure of the Surface Composition of TiO2-Supported Gold–Palladium Bimetallic Catalysts by High-Sensitivity Low-Energy Ion Scattering Spectroscopy. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03839] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Yangyang Li
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Jun Hu
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Dongdong Ma
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Yanping Zheng
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Mingshu Chen
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Huilin Wan
- State Key
Laboratory of Physical Chemistry
of Solid Surfaces, National Engineering Laboratory for Green Chemical
Productions of Alcohols-Ethers-Esters, Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
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38
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Gallo IBC, Carbonio EA, Villullas HM. What Determines Electrochemical Surface Processes on Carbon-Supported PdAu Nanoparticles? ACS Catal 2018. [DOI: 10.1021/acscatal.7b03734] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Irã B. C. Gallo
- Universidade Estadual Paulista (UNESP), Instituto de
Química, Araraquara, 14800-060 Sao Paulo, Brazil
| | - Emilia A. Carbonio
- Helmholtz-Zentrum Berlin für Materialien und Energie, BESSY-II, Albert-Einstein-Straße
15, 12489 Berlin, Germany
| | - Hebe M. Villullas
- Universidade Estadual Paulista (UNESP), Instituto de
Química, Araraquara, 14800-060 Sao Paulo, Brazil
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39
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Čempel D, Nguyen MT, Ishida Y, Tokunaga T, Yonezawa T. Ligand free green plasma-in-liquid synthesis of Au/Ag alloy nanoparticles. NEW J CHEM 2018. [DOI: 10.1039/c7nj05154a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au/Ag alloy nanoparticles were successfully prepared by a microwave-induced plasma in liquid process without any organic protecting or reducing agents.
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Affiliation(s)
- David Čempel
- Division of Materials Science and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Mai Thanh Nguyen
- Division of Materials Science and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Yohei Ishida
- Division of Materials Science and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Tomoharu Tokunaga
- Department of Materials Science and Engineering
- Faculty of Engineering
- Nagoya University
- Furo-cho
- Chikusa
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
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40
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Bukhtiyarov AV, Prosvirin IP, Saraev AA, Klyushin AY, Knop-Gericke A, Bukhtiyarov VI. In situ formation of the active sites in Pd–Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study. Faraday Discuss 2018; 208:255-268. [DOI: 10.1039/c7fd00219j] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Transformation of the surface structure of HOPG-supported bimetallic Pd–Au particles in the course of CO oxidation has been demonstrated using NAP XPS and MS techniques.
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Affiliation(s)
| | - I. P. Prosvirin
- Boreskov Institute of Catalysis
- SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
| | - A. A. Saraev
- Boreskov Institute of Catalysis
- SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
| | | | | | - V. I. Bukhtiyarov
- Boreskov Institute of Catalysis
- SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
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41
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Kareem H, Shan S, Wu ZP, Velasco L, Moseman K, O'Brien CP, Tran DT, Lee IC, Maswadeh Y, Yang L, Mott D, Luo J, Petkov V, Zhong CJ. Catalytic oxidation of propane over palladium alloyed with gold: an assessment of the chemical and intermediate species. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01704b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface intermediate species for catalytic oxidation of propane depend strongly on the catalyst composition.
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42
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Jia H, Wu P, Zeng G, Salas-Colera E, Serrano A, Castro GR, Xu H, Sun C, Goldbach A. High-temperature stability of Pd alloy membranes containing Cu and Au. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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44
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Shirai H, Nguyen MT, Čempel D, Tsukamoto H, Tokunaga T, Liao YC, Yonezawa T. Preparation of Au/Pd Bimetallic Nanoparticles by a Microwave-Induced Plasma in Liquid Process. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160333] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Liao Y, Li Y, Wang L, Zhao Y, Ma D, Wang B, Wan Y, Zhong S. Multi-shelled ceria hollow spheres with a tunable shell number and thickness and their superior catalytic activity. Dalton Trans 2017; 46:1634-1644. [DOI: 10.1039/c6dt04402f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Multi-shelled ceria hollow spheres with tunable shell number and thickness have been prepared via a coordination polymer precursor method. Besides, this method was extended to the preparation of other rare earth oxides. Au and AuPd loaded ceria hollow spheres composites display superior catalytic activity.
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Affiliation(s)
- Yuanyuan Liao
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Yuan Li
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Lei Wang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Yongxia Zhao
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Danyang Ma
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Biqing Wang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Yongxia Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
| | - Shengliang Zhong
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- China
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46
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Londoño-Calderon A, Ponce A, Santiago U, Mejia S, José-Yacamán M. Controlling the Number of Atoms on Catalytic Metallic Clusters. STUDIES IN SURFACE SCIENCE AND CATALYSIS 2017. [DOI: 10.1016/b978-0-12-805090-3.00006-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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47
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Han S, Evans EJ, Mullen GM, Mullins CB. H2O-Improved O2 activation on the Pd–Au bimetallic surface. Chem Commun (Camb) 2017; 53:3990-3993. [DOI: 10.1039/c7cc01542a] [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
Co-adsorbed H2O enhances the activation of adsorbed O2 on the Pd–Au(111) surface.
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Affiliation(s)
- Sungmin Han
- Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry
- University of Texas at Austin
| | - Edward J. Evans
- Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry
- University of Texas at Austin
| | - Gregory M. Mullen
- McKetta Department of Chemical Engineering
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry
- University of Texas at Austin
| | - C. Buddie Mullins
- Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry
- University of Texas at Austin
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48
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Evans EJ, Li H, Yu WY, Mullen GM, Henkelman G, Mullins CB. Mechanistic insights on ethanol dehydrogenation on Pd–Au model catalysts: a combined experimental and DFT study. Phys Chem Chem Phys 2017; 19:30578-30589. [DOI: 10.1039/c7cp05097f] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
UHV experiments and DFT show the dependence of the ethanol dehydrogenation mechanism on the Pd ensemble size on Au(111).
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Affiliation(s)
- E. J. Evans
- McKetta Department of Chemical Engineering and Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry, and Institute for Computational Engineering and Sciences
- University of Texas at Austin
| | - H. Li
- Department of Chemistry, Institute for Computational and Engineering Sciences
- Texas Materials Institute
- The University of Texas at Austin
- Austin
- USA
| | - Wen-Yueh Yu
- McKetta Department of Chemical Engineering and Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry, and Institute for Computational Engineering and Sciences
- University of Texas at Austin
| | - G. M. Mullen
- McKetta Department of Chemical Engineering and Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry, and Institute for Computational Engineering and Sciences
- University of Texas at Austin
| | - G. Henkelman
- Department of Chemistry, Institute for Computational and Engineering Sciences
- Texas Materials Institute
- The University of Texas at Austin
- Austin
- USA
| | - C. Buddie Mullins
- McKetta Department of Chemical Engineering and Department of Chemistry
- Center for Nano and Molecular Science and Technology
- Texas Materials Institute
- Center for Electrochemistry, and Institute for Computational Engineering and Sciences
- University of Texas at Austin
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49
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Liu S, Tan JM, Gulec A, Schweitzer NM, Delferro M, Marks LD, Stair PC, Marks TJ. Direct Synthesis of Low-Coordinate Pd Catalysts Supported on SiO2 via Surface Organometallic Chemistry. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02046] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengsi Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - J. Miles Tan
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Ahmet Gulec
- Department
of Materials Science and Engineering, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - Neil M. Schweitzer
- Department
of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208-3113, United States
| | - Massimiliano Delferro
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Laurence D. Marks
- Department
of Materials Science and Engineering, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - Peter C. Stair
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Tobin J. Marks
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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50
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Yang L, Chen X, Zhou Z, Zhang R, Li L, Cheng Z, Fang X. Magnetic Fe3O4@SiO2/Pd and Fe3O4@SiO2/Pd-M (M=Ag, Cu and Zn) Catalysts for Selective Hydrogenation of Phenylacetylene. ChemistrySelect 2016. [DOI: 10.1002/slct.201601422] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lei Yang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xiangling Chen
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Zhiming Zhou
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Rui Zhang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Li Li
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Zhenmin Cheng
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xiangchen Fang
- Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC; Fushun 113001 China
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