1
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Wang P, Senftle TP. Modeling phase formation on catalyst surfaces: Coke formation and suppression in hydrocarbon environments. AIChE J 2021. [DOI: 10.1002/aic.17454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peng Wang
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Thomas P. Senftle
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
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2
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Singh DK, S G P, Jayakumar A, M N S, Kamble VB, Mitra J, Jaiswal-Nagar D. Thickness induced metal to insulator charge transport and unusual hydrogen response in granular palladium nanofilms. Phys Chem Chem Phys 2020; 22:27861-27872. [PMID: 33284302 DOI: 10.1039/d0cp05508e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports a systematic study of the evolution of charge transport properties in granular ultra-thin films of palladium of thicknesses varying between 6 nm and 2 nm. While the films with thickness >4 nm exhibit metallic behaviour, that at 3 nm thickness undergoes a metal-insulator transition at 19.5 K. In contrast, the 2 nm thick film remained insulating at all temperatures, with transport following Mott's variable range hopping. At room temperature, while the thicker films exhibit resistance decrease upon H2 exposure, the insulating film showed an anomalous initial resistance increase before switching to a subsequent decrease. The nanostructure dependent transport and the ensuing H2 response is modeled on a percolation model, which also explores the relevance of film thickness as a macroscopic control parameter to engineer the desired system response in granular metal films.
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Affiliation(s)
- Dharmendra K Singh
- School of Physics, Indian Institute of Science Education and Research Thiruvanthapuram, Vithura, Thiruvananthapuram 695551, Kerala, India.
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3
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Nielander AC, Blair SJ, McEnaney JM, Schwalbe JA, Adams T, Taheri S, Wang L, Yang S, Cargnello M, Jaramillo TF. Readily Constructed Glass Piston Pump for Gas Recirculation. ACS OMEGA 2020; 5:16455-16459. [PMID: 32685809 PMCID: PMC7364576 DOI: 10.1021/acsomega.0c00742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
The recirculation of gases in a sealed reactor system is a broadly useful method in catalytic and electrocatalytic studies. It is especially relevant when a reactant gas reacts slowly with respect to residence time in a catalytic reaction zone and when mass transport control through the reaction zone is necessary. This need is well illustrated in the field of electrocatalytic N2 reduction, where the need for recirculation of 15N2 has recently become more apparent. Herein, we describe the design, fabrication, use, and specifications of a lubricant-free, readily constructed recirculating pump fabricated entirely from glass and inert polymer (poly(ether ether ketone) (PEEK), poly(tetrafluoroethylene) (PTFE)) components. Using these glass and polymer components ensures chemical compatibility between the piston pump and a wide range of chemical environments, including strongly acidic and organic electrolytes often employed in studies of electrocatalytic N2 reduction. The lubricant-free nature of the pump and the presence of components made exclusively of glass and PEEK/PTFE mitigate contamination concerns associated with recirculating gases saturated with corrosive or reactive vapors for extended periods. The gas recirculating glass pump achieved a flow rate of >500 mL min-1 N2 against atmospheric pressure at 15 W peak power input and >100 mL min-1 N2 against a differential pressure of +6 in. H2O (∼15 mbar) at 10 W peak power input.
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Affiliation(s)
- Adam C. Nielander
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Sarah J. Blair
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Joshua M. McEnaney
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Jay A. Schwalbe
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Tom Adams
- Adams
& Chittenden Scientific Glass, 2741 Eighth Street, Berkeley, California 94710, United States
| | - Sawson Taheri
- Stanford
Prototyping Facility, Stanford University, 350 Jane Stanford Way, Stanford, California 94305, United States
| | - Lei Wang
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Sungeun Yang
- Department
of Physics, Technical University of Denmark, Building 311, Fysikvej, DK-2800 Kgs Lyngby, Denmark
| | - Matteo Cargnello
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
| | - Thomas F. Jaramillo
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
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4
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Feng JY, Minjauw MM, Ramachandran RK, Van Daele M, Poelman H, Sajavaara T, Dendooven J, Detavernier C. The co-reactant role during plasma enhanced atomic layer deposition of palladium. Phys Chem Chem Phys 2020; 22:9124-9136. [PMID: 32301468 DOI: 10.1039/d0cp00786b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Atomic layer deposition (ALD) of noble metals is an attractive technology potentially applied in nanoelectronics and catalysis. Unlike the combustion-like mechanism shown by other noble metal ALD processes, the main palladium (Pd) ALD process using palladium(ii)hexafluoroacetylacetonate [Pd(hfac)2] as precursor is based on true reducing surface chemistry. In this work, a thorough investigation of plasma-enhanced Pd ALD is carried out by employing this precursor with different plasmas (H2*, NH3*, O2*) and plasma sequences (H2* + O2*, O2* + H2*) as co-reactants at varying temperatures, providing insights in the co-reactant and temperature dependence of the Pd growth per cycle (GPC). At all temperatures, films grown with only reducing co-reactants contain a large amount of carbon, while an additional O2* in the co-reactant sequence helps to obtain Pd films with much lower impurity concentrations. Remarkably, in situ XRD and SEM show an abrupt release of the carbon impurities during annealing at moderate temperatures in different atmospheres. In vacuo XPS measurements reveal the remaining species on the as-deposited surface after every exposure. Links are established between the particular surface termination prior to the precursor pulse and the observed differences in GPC, highlighting hydrogen as the key growth facilitator and carbon and oxygen as growth inhibitors. The increase in GPC with temperature for ALD sequences with H2* or NH3* prior to the precursor pulse is explained by an increase in the amount of hydrogen species that reside on the Pd surface which are available for reaction with the Pd(hfac)2 precursor.
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Affiliation(s)
- Ji-Yu Feng
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
| | - Matthias M Minjauw
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
| | - Ranjith K Ramachandran
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
| | - Michiel Van Daele
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
| | - Hilde Poelman
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | | | - Jolien Dendooven
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
| | - Christophe Detavernier
- Department of Solid State Sciences, COCOON Research Group, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium.
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5
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Bosilj M, Rustam L, Thomann R, Melke J, Fischer A, White RJ. Directing nitrogen-doped carbon support chemistry for improved aqueous phase hydrogenation catalysis. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00391c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Influencing stability and performance through directing nitrogen-doping in carbon support materials.
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Affiliation(s)
- Monika Bosilj
- Fraunhofer Institute for Solar Energy Systems ISE
- 79110 Freiburg im Breisgau
- Germany
- Institute for Inorganic and Analytical Chemistry
- Albert-Ludwigs-Universität Freiburg
| | - Lina Rustam
- Fraunhofer Institute for Solar Energy Systems ISE
- 79110 Freiburg im Breisgau
- Germany
| | - Ralf Thomann
- Freiburg Material Research Center, FMF
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
| | - Julia Melke
- Institute for Inorganic and Analytical Chemistry
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
- Freiburg Material Research Center, FMF
| | - Anna Fischer
- Institute for Inorganic and Analytical Chemistry
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
- Freiburg Material Research Center, FMF
| | - Robin J. White
- Fraunhofer Institute for Solar Energy Systems ISE
- 79110 Freiburg im Breisgau
- Germany
- Netherlands Organization for Applied Scientific Research
- TNO
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6
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Jung CK, Braunwarth L, Jacob T. Grand Canonical ReaxFF Molecular Dynamics Simulations for Catalytic Reactions. J Chem Theory Comput 2019; 15:5810-5816. [DOI: 10.1021/acs.jctc.9b00687] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Christoph K. Jung
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, Helmholtzstr. 11, D-89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box
3640, D-76021 Karlsruhe, Germany
| | - Laura Braunwarth
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - Timo Jacob
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, Helmholtzstr. 11, D-89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box
3640, D-76021 Karlsruhe, Germany
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
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7
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Hijazi I, Zhang Y, Fuller R. A simple embedded atom potential for Pd-H alloys. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1508840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Iyad Hijazi
- Weisberg Division of Engineering, Marshall University, Huntington, WV, USA
| | - Yang Zhang
- Weisberg Division of Engineering, Marshall University, Huntington, WV, USA
| | - Robert Fuller
- Weisberg Division of Engineering, Marshall University, Huntington, WV, USA
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8
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Dehydrogenation of Liquid Organic Hydrogen Carriers on Supported Pd Model Catalysts: Carbon Incorporation Under Operation Conditions. Catal Letters 2018. [DOI: 10.1007/s10562-018-2487-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Heinen J, Dubbeldam D. On flexible force fields for metal-organic frameworks: Recent developments and future prospects. WILEY INTERDISCIPLINARY REVIEWS. COMPUTATIONAL MOLECULAR SCIENCE 2018; 8:e1363. [PMID: 30008812 PMCID: PMC6032946 DOI: 10.1002/wcms.1363] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 12/11/2017] [Accepted: 12/15/2017] [Indexed: 11/09/2022]
Abstract
Classical force field simulations can be used to study structural, diffusion, and adsorption properties of metal-organic frameworks (MOFs). To account for the dynamic behavior of the material, parameterization schemes have been developed to derive force constants and the associated reference values by fitting on ab initio energies, vibrational frequencies, and elastic constants. Here, we review recent developments in flexible force field models for MOFs. Existing flexible force field models are generally able to reproduce the majority of experimentally observed structural and dynamic properties of MOFs. The lack of efficient sampling schemes for capturing stimuli-driven phase transitions, however, currently limits the full predictive potential of existing flexible force fields from being realized. This article is categorized under: Structure and Mechanism > Computational Materials ScienceMolecular and Statistical Mechanics > Molecular Mechanics.
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Affiliation(s)
- Jurn Heinen
- Van ’t Hoff Institute for Molecular SciencesUniversity of AmsterdamAmsterdamThe Netherlands
| | - David Dubbeldam
- Van ’t Hoff Institute for Molecular SciencesUniversity of AmsterdamAmsterdamThe Netherlands
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10
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Heinen J, Burtch NC, Walton KS, Dubbeldam D. Flexible Force Field Parameterization through Fitting on the Ab Initio-Derived Elastic Tensor. J Chem Theory Comput 2017; 13:3722-3730. [PMID: 28661672 PMCID: PMC5550891 DOI: 10.1021/acs.jctc.7b00310] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Constructing functional
forms and their corresponding force field
parameters for the metal–linker interface of metal–organic
frameworks is challenging. We propose fitting these parameters on
the elastic tensor, computed from ab initio density functional theory
calculations. The advantage of this top-down approach is that it becomes
evident if functional forms are missing when components of the elastic
tensor are off. As a proof-of-concept, a new flexible force field
for MIL-47(V) is derived. Negative thermal expansion is observed and
framework flexibility has a negligible effect on adsorption and transport
properties for small guest molecules. We believe that this force field
parametrization approach can serve as a useful tool for developing
accurate flexible force field models that capture the correct mechanical
behavior of the full periodic structure.
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Affiliation(s)
- Jurn Heinen
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Nicholas C Burtch
- Sandia National Laboratories , Livermore, California 94551, United States
| | - Krista S Walton
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology , 311 Ferst Drive Northwest, Atlanta, Georgia 30332, United States
| | - David Dubbeldam
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
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11
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Development of physics based analytical interatomic potential for palladium-hydride. J Mol Model 2017; 23:108. [PMID: 28285441 DOI: 10.1007/s00894-017-3288-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 02/20/2017] [Indexed: 10/20/2022]
Abstract
Palladium hydrides (Pd-H) research is an important topic in materials research with many practical industrial applications. The complex behavior of the Pd-H alloy system such as phase miscibility gap, however, presents a huge challenge for developing reliable computational models. The embedded atom method (EAM) offers an advantage of computational efficiency and being suited to the metal-hydride system. We propose a new EAM interatomic potential for the complete mathematical modeling of palladium hydride. The present interatomic potential well predicts the lattice constant, cohesive energy, bulk modulus, other elastic constants, and stable alloy crystal structures during molecular dynamics simulations. The phase miscibility gap is also accurately predicted for the Pd-H system using the present potential. To our knowledge, only two Pd-H EAM potentials were used for predicting the phase miscibility gap for the PdH system. The predicted values from these works, however, considerably deviated from the experimental result, which hinders further application to the palladium hydride system. The present potential is reliably accurate and can be used to study the Pd-H system with its compete description of the mathematical formalism.
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12
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Schoutteten KVKM, Hennebel T, Dheere E, Bertelkamp C, De Ridder DJ, Maes S, Chys M, Van Hulle SWH, Vanden Bussche J, Vanhaecke L, Verliefde ARD. Effect of oxidation and catalytic reduction of trace organic contaminants on their activated carbon adsorption. CHEMOSPHERE 2016; 165:191-201. [PMID: 27654222 DOI: 10.1016/j.chemosphere.2016.09.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/05/2016] [Accepted: 09/08/2016] [Indexed: 06/06/2023]
Abstract
The combination of ozonation and activated carbon (AC) adsorption is an established technology for removal of trace organic contaminants (TrOCs). In contrast to oxidation, reduction of TrOCs has recently gained attention as well, however less attention has gone to the combination of reduction with AC adsorption. In addition, no literature has compared the removal behavior of reduction vs. ozonation by-products by AC. In this study, the effect of pre-ozonation vs pre-catalytic reduction on the AC adsorption efficiency of five TrOCs and their by-products was compared. All compounds were susceptible to oxidation and reduction, however the catalytic reductive treatment proved to be a slower reaction than ozonation. New oxidation products were identified for dinoseb and new reduction products were identified for carbamazepine, bromoxynil and dinoseb. In terms of compatibility with AC adsorption, the influence of the oxidative and reductive pretreatments proved to be compound dependent. Oxidation products of bromoxynil and diatrizoic acid adsorbed better than their parent TrOCs, but oxidation products of atrazine, carbamazepine and dinoseb showed a decreased adsorption. The reductive pre-treatment showed an enhanced AC adsorption for dinoseb and a major enhancement for diatrizoic acid. For atrazine and bromoxynil, no clear influence on adsorption was noted, while for carbamazepine, the reductive pretreatment resulted in a decreased AC affinity. It may thus be concluded that when targeting mixtures of TrOCs, a trade-off will undoubtedly have to be made towards overall reactivity and removal of the different constituents, since no single treatment proves to be superior to the other.
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Affiliation(s)
- Klaas V K M Schoutteten
- Laboratory of Particle and Interfacial Technology (PaInT), Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Tom Hennebel
- Laboratory of Microbial Ecology and Technology (LabMET), Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Ellen Dheere
- Laboratory of Particle and Interfacial Technology (PaInT), Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Cheryl Bertelkamp
- Laboratory of Particle and Interfacial Technology (PaInT), Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; Laboratory of Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
| | - David J De Ridder
- Laboratory of Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
| | - Synthia Maes
- Laboratory of Microbial Ecology and Technology (LabMET), Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Michael Chys
- Laboratory of Industrial Water- and Ecotechnology (LIWET), Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium; BIOMATH, Department of Mathematical Modelling, Statistics and Bioinformatics, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Stijn W H Van Hulle
- Laboratory of Industrial Water- and Ecotechnology (LIWET), Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium; BIOMATH, Department of Mathematical Modelling, Statistics and Bioinformatics, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Julie Vanden Bussche
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Lynn Vanhaecke
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Arne R D Verliefde
- Laboratory of Particle and Interfacial Technology (PaInT), Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
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13
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The Chemical Deposition Method for the Decoration of Palladium Particles on Carbon Nanofibers with Rapid Conductivity Changes. NANOMATERIALS 2016; 6:nano6120226. [PMID: 28335353 PMCID: PMC5302716 DOI: 10.3390/nano6120226] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 11/15/2016] [Accepted: 11/22/2016] [Indexed: 11/17/2022]
Abstract
Palladium (Pd) metal is well-known for hydrogen sensing material due to its high sensitivity and selectivity toward hydrogen, and is able to detect hydrogen at near room temperature. In this work, palladium-doped carbon nanofibers (Pd/CNFs) were successfully produced in a facile manner via electrospinning. Well-organized and uniformly distributed Pd was observed in microscopic images of the resultant nanofibers. Hydrogen causes an increment in the volume of Pd due to the ability of hydrogen atoms to occupy the octahedral interstitial positions within its face centered cubic lattice structure, resulting in the resistance transition of Pd/CNFs. The resistance variation was around 400%, and it responded rapidly within 1 min, even in 5% hydrogen atmosphere conditions at room temperature. This fibrous hybrid material platform will open a new and practical route and stimulate further researches on the development of hydrogen sensing materials with rapid response, even to low concentrations of hydrogen in an atmosphere.
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14
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Fong NR, Berini P, Tait RN. Hydrogen sensing with Pd-coated long-range surface plasmon membrane waveguides. NANOSCALE 2016; 8:4284-90. [PMID: 26838667 DOI: 10.1039/c5nr08001k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A low power, reusable optical hydrogen sensor using long-range surface plasmon polariton (LRSPP) cladded membrane waveguides is demonstrated. The sensor incorporates a 5 μm wide, 20 nm thick gold stripe embedded in a 160 nm thick free-standing Cytop membrane with a 5 nm thick Pd over-layer. Input and output coupling is achieved with directly integrated broadside grating couplers. The sensor is tested with hydrogen concentrations up to 3% and demonstrates a strong response with an estimated detection limit of 290 ppm, and a response time of 7 s to a 0.6% H2 step - this level of performance is among the best reported for optical H2 sensors. Cycling of the hydrogen exposure shows a significant hysteresis response, however no film deformation or delamination was observed over many cycles. The high stress that is induced in clamped films during hydrogenation is relaxed in due to the film being deposited on the flexible and elastic Cytop membrane. This could result in improved lifetimes for this sensor and increased uptake ability.
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Affiliation(s)
- Norman R Fong
- Department of Electronics, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
| | - Pierre Berini
- School of Electrical Engineering and Computer Science, Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada and Centre for Research in Photonics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - R N Tait
- Department of Electronics, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
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15
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Dubbeldam D, Calero S, Ellis DE, Snurr RQ. RASPA: molecular simulation software for adsorption and diffusion in flexible nanoporous materials. MOLECULAR SIMULATION 2015. [DOI: 10.1080/08927022.2015.1010082] [Citation(s) in RCA: 703] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Dubbeldam D, Torres-Knoop A, Walton KS. On the inner workings of Monte Carlo codes. MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2013.819102] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Yun J, Jin CY, Ahn JH, Jeon S, Park I. A self-heated silicon nanowire array: selective surface modification with catalytic nanoparticles by nanoscale Joule heating and its gas sensing applications. NANOSCALE 2013; 5:6851-6856. [PMID: 23770994 DOI: 10.1039/c3nr01640d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We demonstrated novel methods for selective surface modification of silicon nanowire (SiNW) devices with catalytic metal nanoparticles by nanoscale Joule heating and local chemical reaction. The Joule heating of a SiNW generated a localized heat along the SiNW and produced endothermic reactions such as hydrothermal synthesis of nanoparticles or thermal decomposition of polymer thin films. In the first method, palladium (Pd) nanoparticles could be selectively synthesized and directly coated on a SiNW by the reduction of the Pd precursor via Joule heating of the SiNW. In the second method, a sequential process composed of thermal decomposition of a polymer, evaporation of a Pd thin film, and a lift-off process was utilized. The selective decoration of Pd nanoparticles on SiNW was successfully accomplished by using both methods. Finally, we demonstrated the applications of SiNWs decorated with Pd nanoparticles as hydrogen detectors. We also investigated the effect of self-heating of the SiNW sensor on its sensing performance.
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Affiliation(s)
- Jeonghoon Yun
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
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18
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Senftle TP, Meyer RJ, Janik MJ, van Duin ACT. Development of a ReaxFF potential for Pd/O and application to palladium oxide formation. J Chem Phys 2013; 139:044109. [DOI: 10.1063/1.4815820] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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19
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Poyli MA, Silkin VM, Chernov IP, Echenique PM, Muiño RD, Aizpurua J. Multiscale Theoretical Modeling of Plasmonic Sensing of Hydrogen Uptake in Palladium Nanodisks. J Phys Chem Lett 2012; 3:2556-61. [PMID: 26295874 DOI: 10.1021/jz3007723] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We study theoretically the optical properties of palladium nanodisks during hydrogen uptake. A combination of an ab initio quantum mechanical description of the Pd-H dielectric properties and a full electrodynamical study of light scattering in the H-modified Pd nanodisks allows us to trace the shift of the localized surface plasmon as a function of the H concentration in the Pd-H disk. We follow the evolution of the plasmon peak energy for different admixtures of the Pd-H α and β phases and interpret quantitatively the experimental sensitivity of the plasmon energy shift to the structural inhomogeneity upon H absorption. Our multiscale theoretical framework provides a solid background for plasmonic sensing of structural domains, as well as for identifying H saturation conditions in metal hydride systems.
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Affiliation(s)
- M Ameen Poyli
- †Centro de Física de Materiales CFM (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- ‡Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
| | - V M Silkin
- ‡Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
- ¶Departamento de Física de Materiales, Facultad de Químicas UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
- §IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - I P Chernov
- ∥Tomsk Polytechnical University, pr. Lenina 30, 634050 Tomsk, Russia
| | - P M Echenique
- †Centro de Física de Materiales CFM (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- ‡Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
- ¶Departamento de Física de Materiales, Facultad de Químicas UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - R Díez Muiño
- †Centro de Física de Materiales CFM (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- ‡Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
| | - J Aizpurua
- †Centro de Física de Materiales CFM (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- ‡Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
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Calvo F, Costa D. Diffusion of Hydrides in Palladium Nanoclusters. A Ring-Polymer Molecular Dynamics Study of Quantum Finite Size Effects. J Chem Theory Comput 2010; 6:508-16. [PMID: 26617306 DOI: 10.1021/ct900554r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The diffusion kinetics of hydrogen in bulk palladium and in Pd nanoclusters containing up to 512 atoms has been theoretically investigated at 3% loading using ring-polymer molecular dynamics simulations. The electronic ground-state energy surfaces are modeled using an explicit many-body potential fitted to reproduce the properties of bulk palladium and palladium hydrides. The diffusion constant, calculated by integration of the velocity autocorrelation function, shows Arrhenius behavior with inverse temperature. In addition, both the prefactor and activation energy are found to exhibit approximately linear variations with inverse cluster radius for sizes exceeding 128 Pd atoms. Vibrational delocalization generally enhances diffusion, this effect being stronger in clusters than in bulk. An inherent structure analysis from the positions of the centroids was used to characterize the diffusion mechanisms. Quantum effects lead to not only a higher coordination of hydrogen atoms both in bulk (fcc) palladium and in clusters but also favor further softening of the outer layers.
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Affiliation(s)
- F Calvo
- Laboratoire de Spectrométrie Ionique et Moléculaire (LASIM), Université Claude Bernard Lyon 1 and Centre National de la Recherche Scientifique (CNRS) UMR 5579, Bát. A. Kastler, 43 Boulevard du 11 Novembre 1918, F69622 Villeurbanne, France
| | - D Costa
- Laboratoire de Spectrométrie Ionique et Moléculaire (LASIM), Université Claude Bernard Lyon 1 and Centre National de la Recherche Scientifique (CNRS) UMR 5579, Bát. A. Kastler, 43 Boulevard du 11 Novembre 1918, F69622 Villeurbanne, France
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Yamauchi M, Kobayashi H, Kitagawa H. Hydrogen Storage Mediated by Pd and Pt Nanoparticles. Chemphyschem 2009; 10:2566-76. [DOI: 10.1002/cphc.200900289] [Citation(s) in RCA: 170] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bemis JM, Dahl LF. H12Pd28(PtPMe3)(PtPPh3)12(CO)27, a High-Nuclearity Pd28Pt13 Cluster Containing 12 Hydrido Atoms: A Possible Molecular Hydrogen-Storage Model for Palladium Metal. J Am Chem Soc 1997. [DOI: 10.1021/ja970528c] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- John M. Bemis
- Department of Chemistry, University of WisconsinMadison Madison, Wisconsin 53706
| | - Lawrence F. Dahl
- Department of Chemistry, University of WisconsinMadison Madison, Wisconsin 53706
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Naito S, Yamamoto M, Doi M, Kimura M. Sloping plateaux in the pressure–composition isotherms of the titanium–hydrogen and Ti94Al6–hydrogen systems. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/ft9959104143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wolf RJ, Lee MW, Ray JR. Pressure-composition isotherms for nanocrystalline palladium hydride. PHYSICAL REVIEW LETTERS 1994; 73:557-560. [PMID: 10057477 DOI: 10.1103/physrevlett.73.557] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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