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Acharya A, Mete TB, Kumari N, Yoon Y, Jeong H, Jang T, Song B, Choi HC, Han JW, Pang Y, Yun Y, Kumar A, Lee IS. Ultrathin covalent organic overlayers on metal nanocrystals for highly selective plasmonic photocatalysis. Nat Commun 2023; 14:7667. [PMID: 37996475 PMCID: PMC10667221 DOI: 10.1038/s41467-023-43482-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
Metal nanoparticle-organic interfaces are common but remain elusive for controlling reactions due to the complex interactions of randomly formed ligand-layers. This paper presents an approach for enhancing the selectivity of catalytic reactions by constructing a skin-like few-nanometre ultrathin crystalline porous covalent organic overlayer on a plasmonic nanoparticle surface. This organic overlayer features a highly ordered layout of pore openings that facilitates molecule entry without any surface poisoning effects and simultaneously endows favourable electronic effects to control molecular adsorption-desorption. Conformal organic overlayers are synthesised through the plasmonic oxidative activation and intermolecular covalent crosslinking of molecular units. We develop a light-operated multicomponent interfaced plasmonic catalytic platform comprising Pd-modified gold nanoparticles inside hollow silica to achieve the highly efficient and selective semihydrogenation of alkynes. This approach demonstrates a way to control molecular adsorption behaviours on metal surfaces, breaking the linear scaling relationship and simultaneously enhancing activity and selectivity.
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Affiliation(s)
- Anubhab Acharya
- Creative Research Initiative Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Trimbak Baliram Mete
- Creative Research Initiative Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Nitee Kumari
- Creative Research Initiative Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Youngkwan Yoon
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Hayoung Jeong
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Taehyung Jang
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Korea
| | - Byeongju Song
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Hee Cheul Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Jeong Woo Han
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Yoonsoo Pang
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Korea
| | - Yongju Yun
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Amit Kumar
- Creative Research Initiative Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
| | - In Su Lee
- Creative Research Initiative Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, Seoul, 03722, Korea.
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Tiwari G, Sharma G, Verma R, Gakhad P, Singh AK, Polshettiwar V, Jagirdar BR. Acetylene Semi-Hydrogenation at Room Temperature over Pd-Zn Nanocatalyst. Chemistry 2023; 29:e202301932. [PMID: 37632841 DOI: 10.1002/chem.202301932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/20/2023] [Accepted: 08/26/2023] [Indexed: 08/28/2023]
Abstract
A reaction of fundamental and commercial importance is acetylene semi-hydrogenation. Acetylene impurity in the ethylene feedstock used in the polyethylene industry poisons the Ziegler-Natta catalyst which adversely affects the polymer quality. Pd based catalysts are most often employed for converting acetylene into the main reactant, ethylene, however, it often involves a tradeoff between the conversion and the selectivity and generally requires high temperatures. In this work, bimetallic Pd-Zn nanoparticles capped by hexadecylamine (HDA) have been synthesized by co-digestive ripening of Pd and Zn nanoparticles and studied for semi-hydrogenation of acetylene. The catalyst showed a high selectivity of ~85 % towards ethylene with a high ethylene productivity to the tune of ~4341 μmol g-1 min-1 , at room temperature and atmospheric pressure. It also exhibited excellent stability with ethylene selectivity remaining greater than 85 % even after 70 h on stream. To the best of the authors' knowledge, this is the first report of room temperature acetylene semi-hydrogenation, with the catalyst effecting high amount of acetylene conversion to ethylene retaining excellent selectivity and stability among all the reported catalysts thus far. DFT calculations show that the disordered Pd-Zn nanocatalyst prepared by a low temperature route exhibits a change in the d-band center of Pd and Zn which in turn enhances the selectivity towards ethylene. TPD, XPS and a range of catalysis experiments provided in-depth insights into the reaction mechanism, indicating the key role of particle size, surface area, Pd-Zn interactions, and the capping agent.
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Affiliation(s)
- Garima Tiwari
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Gunjan Sharma
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai, 400 005, India
| | - Rishi Verma
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai, 400 005, India
| | - Pooja Gakhad
- Materials Research Centre, Indian Institute of Science, Bangalore, 560 012, India
| | - Abhishek Kumar Singh
- Materials Research Centre, Indian Institute of Science, Bangalore, 560 012, India
| | - Vivek Polshettiwar
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai, 400 005, India
| | - Balaji R Jagirdar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560 012, India
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3
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Ropp A, André RF, Carenco S. Phosphine-Enhanced Semi-Hydrogenation of Phenylacetylene by Cobalt Phosphide Nano-Urchins. Chempluschem 2023; 88:e202300469. [PMID: 37694531 DOI: 10.1002/cplu.202300469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/12/2023]
Abstract
Transition metal phosphides are promising, selective, and air-stable nanocatalysts for hydrogenation reactions. However, they often require fairly high temperatures and H2 pressures to provide quantitative conversions. This work reports the positive effect of phosphine additives on the activity of cobalt phosphide nano-urchins for the semi-hydrogenation of phenylacetylene. While the nanocatalyst's activity was low under mild conditions (7 bar of H2 , 100 °C), the addition of a catalytic amount of phosphine remarkably increased the conversion, e. g., from 13 % to 98 % in the case of Pn Bu3 . The heterogeneous nature of the catalyst was confirmed by negative supernatant activity tests. The catalyst integrity was carefully verified by post-mortem analyses (TEM, XPS, and liquid 31 P NMR). A stereo-electronic map was proposed to rationalize the activity enhancement provided over a selection of nine phosphines: the strongest effect was observed for low to moderately hindered phosphines, associated with strong electron donor abilities. A threshold in phosphine stoichiometry was revealed for the enhancement of activity to occur, which was related to the ratio of phosphine to surface cobalt atoms.
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Affiliation(s)
- Anthony Ropp
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, 75005, Paris, France
| | - Rémi F André
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, 75005, Paris, France
| | - Sophie Carenco
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, 75005, Paris, France
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Mhamane NB, Panchal S, Kolekar SK, Ranjan R, Salgaonkar KN, Burange AS, Nalajala N, Datar S, Gopinath CS. Possible handle for broadening the catalysis regime towards low temperatures: proof of concept and mechanistic studies with CO oxidation on surface modified Pd-TiO 2. Phys Chem Chem Phys 2023; 25:22040-22054. [PMID: 37555468 DOI: 10.1039/d3cp01122d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
The present work demonstrates the effect of temperature-dependent surface modification (SM) treatment and its influence in broadening the catalysis regime with Pd-TiO2 catalysts prepared by various methods. Due to SM induced changes, a shift in the onset of CO oxidation activity as well as broadening of the oxidation catalysis regime by 30 to 65 K to lower temperatures is observed compared to the temperature required for virgin counterparts. SM carried out at 523 K for PdPhoto-TiO2 exhibits the lowest onset (10% CO2 production - T10) and T100 for CO oxidation at 360 and 392 K, respectively, while its virgin counterpart shows T10 and T100 at 393 and 433 K, respectively. The SMd Pd-TiO2 catalysts were investigated using X-ray photoelectron spectroscopy (XPS), ultra-violet photoelectron spectroscopy (UPS) and atomic force microscopy (AFM). It is observed that diffusion of atomic oxygen into Pd-subsurfaces leads to SM and changes the nature of the surface significantly. These changes are demonstrated by work function (ϕ), surface potential, catalytic activity, and correlation among them. UPS results demonstrate the maximum increase in ϕ by 0.5 eV for PdPhoto-TiO2 after SM, compared to all other catalysts. XPS study shows a moderate to severe change in the oxidation states of Pd due to atomic oxygen diffusion into the subsurface layers of Pd. Kelvin probe force microscopy (KPFM) study also reveals corroborating evidence that the surface potential increases linearly with increasing temperature deployed for SM up to 523 K, followed by a marginal decrease at 573 K. The ϕ measured by KPFM and UPS shows a similar trend and correlates well with the changes in catalysis observed. Our results indicate that there is a strong correlation between surface physical and chemical properties, and ϕ changes could be considered as a global marker for chemical reactivity.
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Affiliation(s)
- Nitin B Mhamane
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Suresh Panchal
- Department of Applied Physics, Defence Institute of Advanced Technology (Deemed University), Girinagar, Pune 411025, India
| | - Sadhu K Kolekar
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
| | - Ravi Ranjan
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Kranti N Salgaonkar
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Anand S Burange
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
- Department of Chemistry, John Wilson Education Society's Wilson College (Autonomous), Chowpatty, Mumbai, 400 007, India
| | - Naresh Nalajala
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
| | - Suwarna Datar
- Department of Applied Physics, Defence Institute of Advanced Technology (Deemed University), Girinagar, Pune 411025, India
| | - Chinnakonda S Gopinath
- Catalysis and Inorganic Chemistry Division, CSIR- National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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Cely-Pinto M, Wang B, Scaiano JC. Photocatalytic Semi-Hydrogenation of Alkynes: A Game of Kinetics, Selectivity and Critical Timing. Nanomaterials (Basel) 2023; 13:2390. [PMID: 37686898 PMCID: PMC10490202 DOI: 10.3390/nano13172390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 08/12/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023]
Abstract
The semi-hydrogenation reaction of alkynes is important in the fine chemicals and pharmaceutical industries, and it is thus important to find catalytic processes that will drive the reaction efficiently and at a low cost. The real challenge is to drive the alkyne-to-alkene reaction while avoiding over-hydrogenation to the saturated alkane moiety. The problem is more difficult when dealing with aromatic substitution at the alkyne center. Simple photocatalysts based on Palladium tend to proceed to the alkane, and stopping at the alkene with good selectivity requires very precise timing with basically no timing tolerance. We report here that the goal of high conversion with high selectivity could be achieved with TiO2-supported copper (Cu@TiO2), although with slower kinetics than for Pd@TiO2. A novel bimetallic catalyst, namely, CuPd@TiO2 (0.8% Cu and 0.05% Pd), with methanol as the hydrogen source could improve the kinetics by 50% with respect to Cu@TiO2, while achieving selectivities over 95% and with exceptional timing tolerance. Further, the low Palladium content minimizes its use, as Palladium is regarded as an element at risk of depletion.
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Affiliation(s)
| | | | - Juan C. Scaiano
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada; (M.C.-P.); (B.W.)
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Zhang W, Qin R, Fu G, Zheng N. Hydrogen Bond Network Induced by Surface Ligands Shifts the Semi-hydrogenation Selectivity over Palladium Catalysts. J Am Chem Soc 2023; 145:10178-10186. [PMID: 37116205 DOI: 10.1021/jacs.3c00953] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Tuning the metal-ligand interfaces of heterogeneous catalysts has emerged as an effective strategy to optimize their catalytic performance. However, improving the selectivity via organic modification remains a challenge so far. In this work, we demonstrate a simple ligand modification by preparing cysteamine-coated ultrathin palladium nanosheets. The as-prepared catalyst exhibits excellent selectivity with durability during catalytic hydrogenation of terminal alkynes, superior to most previously reported ligand-protected palladium catalysts. Further study reveals that a zwitterionic transformation occurs on the palladium interface under the H2 conditions, generating a rigid hydrogen bond network. Such an unexpected effect beyond the traditional steric effect derived from van der Waals interactions makes the catalytic surface favor the hydrogenation of alkynes over alkenes without significantly sacrificing the catalytic activity. These results not only provide a unique steric effect concept for surface coordination chemistry but also provide a practical application to improve the selectivity and activity comprehensively.
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Affiliation(s)
- Weijie Zhang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, and National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ruixuan Qin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, and National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
| | - Gang Fu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, and National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, and National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
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Chen J, Lin X, Xu F, Chai K, Ren M, Yu Z, Su W, Liu F. An Efficient Continuous Flow Synthesis for the Preparation of N-Arylhydroxylamines: Via a DMAP-Mediated Hydrogenation Process. Molecules 2023; 28:molecules28072968. [PMID: 37049731 PMCID: PMC10096002 DOI: 10.3390/molecules28072968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
The selective hydrogenation of nitroarenes to N-arylhydroxylamines is an important synthetic process in the chemical industry. It is commonly accomplished by using heterogeneous catalytic systems that contain inhibitors, such as DMSO. Herein, DMAP has been identified as a unique additive for increasing hydrogenation activity and product selectivity (up to >99%) under mild conditions in the Pt/C-catalyzed process. Continuous-flow technology has been explored as an efficient approach toward achieving the selective hydrogenation of nitroarenes to N-arylhydroxylamines. The present flow protocol was applied for a vast substrate scope and was found to be compatible with a wide range of functional groups, such as electron-donating groups, carbonyl, and various halogens. Further studies were attempted to show that the improvement in the catalytic activity and selectivity benefited from the dual functions of DMAP; namely, the heterolytic H2 cleavage and competitive adsorption.
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Affiliation(s)
- Jianli Chen
- College of New Materials Engineering, Jiaxing Nanhu University, Jiaxing 314000, China
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence: (J.C.); (F.L.)
| | - Xinyu Lin
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Feng Xu
- Raybow (Hangzhou) Pharmaceutical Co., Ltd., Hangzhou 310014, China
| | - Kejie Chai
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Minna Ren
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhiqun Yu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Weike Su
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Fengfan Liu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence: (J.C.); (F.L.)
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8
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Xu C, Li K, Yu H, Liu M, Zhou S. Pt nanoparticles confined in hollow silica nanoreactors as highly efficient catalysts for semihydrogenations of alkynes at atmospheric H2 pressure. J Colloid Interface Sci 2023; 630:334-342. [DOI: 10.1016/j.jcis.2022.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 09/23/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
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9
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Hyun K, Park Y, Choi M. Chain length effects of phenylene sulfide modifiers on selective acetylene partial hydrogenation over Pd catalysts. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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10
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Paterson R, Alharbi HY, Wills C, Chamberlain TW, Bourne RA, Griffiths A, Collins SM, Wu K, Simmons MD, Menzel R, Masey AF, Knight JG, Doherty S. Highly Efficient and Selective Partial Reduction of Nitroarenes to N-Arylhydroxylamines Catalysed by Phosphine Oxide-Decorated Polymer Immobilized Ionic Liquid Stabilized Ruthenium Nanoparticles. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Zeng Y, Lemay JC, Dong Y, Garcia J, Groves MN, McBreen PH. Ligand-Assisted Carbonyl Bond Activation in Single Diastereomeric Complexes on Platinum. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yang Zeng
- CCVC and Department of Chemistry, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Jean-Christian Lemay
- CCVC and Department of Chemistry, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Yi Dong
- CCVC and Department of Chemistry, Université Laval, Québec, Québec G1V 0A6, Canada
| | - James Garcia
- Department of Chemistry and Biochemistry, California State University Fullerton, Fullerton, California 92831, United States
| | - Michael. N Groves
- Department of Chemistry and Biochemistry, California State University Fullerton, Fullerton, California 92831, United States
| | - Peter H. McBreen
- CCVC and Department of Chemistry, Université Laval, Québec, Québec G1V 0A6, Canada
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Song B, Chung I, Kim J, Yun M, Yun Y. Promoting effects of residual poly(vinyl alcohol) capping agent on the activity and chemoselectivity of Pt/Al2O3 for catalytic hydrogenation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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Paterson R, Alharbi AA, Wills C, Dixon C, Šiller L, Chamberlain TW, Griffiths A, Collins SM, Wu K, Simmons MD, Bourne RA, Lovelock KR, Seymour J, Knight JG, Doherty S. Heteroatom modified polymer immobilized ionic liquid stabilized ruthenium nanoparticles: Efficient catalysts for the hydrolytic evolution of hydrogen from sodium borohydride. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2022.112476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Wu D, Han D, Zhou W, Streiff S, Khodakov AY, Ordomsky VV. Surface modification of metallic catalysts for the design of selective processes. Catalysis Reviews 2022. [DOI: 10.1080/01614940.2022.2079809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Dan Wu
- UCCS–Unité de Catalyse et Chimie du Solide, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ, Artois, France
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, Shanghai, Jiangsu, People’s Republic of China
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, China
| | - Dandan Han
- College of Science, Henan Agricultural University, Zhengzhou, Henan, China
| | - Wenjuan Zhou
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, Shanghai, Jiangsu, People’s Republic of China
| | - Stephane Streiff
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, Shanghai, Jiangsu, People’s Republic of China
| | - Andrei Y. Khodakov
- UCCS–Unité de Catalyse et Chimie du Solide, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ, Artois, France
| | - Vitaly V. Ordomsky
- UCCS–Unité de Catalyse et Chimie du Solide, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ, Artois, France
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Parida D, Bakkali-Hassani C, Lebraud E, Schatz C, Grelier S, Taton D, Vignolle J. Tuning the activity and selectivity of polymerised ionic liquid-stabilised ruthenium nanoparticles through anion exchange reactions. Nanoscale 2022; 14:4635-4643. [PMID: 35262129 DOI: 10.1039/d1nr07628k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The development of highly active and selective heterogeneous-based catalysts with tailorable properties is not only a fundamental challenge, but is also crucial in the context of energy savings and sustainable chemistry. Here, we show that ruthenium nanoparticles (RuNPs) stabilised with simple polymerised ionic liquids (PILs) based on N-vinyl imidazolium led to highly active and robust nano-catalysts in hydrogenation reactions, both in water and organic media. Of particular interest, their activity and selectivity could simply be manipulated through counter-anion exchange reactions. Hence, as a proof of concept, the activity of RuNPs could be reversibly turned on and off in the hydrogenation of toluene, while in the case of styrene, the hydrogenation could be selectively switched from ethylbenzene to ethylcyclohexane upon anion metathesis. According to X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS) analyses, these effects could originate not only from the relative hydrophobicity and solvation of the PIL corona but also from the nature and strength of the PIL-Ru interactions.
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Affiliation(s)
- Dambarudhar Parida
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
- Swiss Federal Laboratories for Materials Science and Technology (Empa), St. Gallen, CH-9014, Switzerland
| | - Camille Bakkali-Hassani
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
| | - Eric Lebraud
- University of Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Christophe Schatz
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
| | - Stéphane Grelier
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
| | - Daniel Taton
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
| | - Joan Vignolle
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France.
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16
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Abstract
A critical review of different prominent nanotechnologies adapted to catalysis is provided, with focus on how they contribute to the improvement of selectivity in heterogeneous catalysis. Ways to modify catalytic sites range from the use of the reversible or irreversible adsorption of molecular modifiers to the immobilization or tethering of homogeneous catalysts and the development of well-defined catalytic sites on solid surfaces. The latter covers methods for the dispersion of single-atom sites within solid supports as well as the use of complex nanostructures, and it includes the post-modification of materials via processes such as silylation and atomic layer deposition. All these methodologies exhibit both advantages and limitations, but all offer new avenues for the design of catalysts for specific applications. Because of the high cost of most nanotechnologies and the fact that the resulting materials may exhibit limited thermal or chemical stability, they may be best aimed at improving the selective synthesis of high value-added chemicals, to be incorporated in organic synthesis schemes, but other applications are being explored as well to address problems in energy production, for instance, and to design greener chemical processes. The details of each of these approaches are discussed, and representative examples are provided. We conclude with some general remarks on the future of this field.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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17
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Doherty S, Knight JG, Alharbi HY, Paterson R, Wills C, Dixon C, Šiller L, Chamberlain TW, Griffiths A, Collins SM, Wu K, Simmons MD, Bourne RA, Lovelock KRJ, Seymour J. Efficient Hydrolytic Hydrogen Evolution from Sodium Borohydride Catalyzed by Polymer Immobilized Ionic Liquid‐Stabilized Platinum Nanoparticles. ChemCatChem 2022. [DOI: 10.1002/cctc.202101752] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Simon Doherty
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Julian G. Knight
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Hussam Y. Alharbi
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Reece Paterson
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Corinne Wills
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Casey Dixon
- Newcastle University Centre for Catalysis (NUCAT) School of Chemistry, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Lidija Šiller
- School of Engineering, Bedson Building Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Thomas W. Chamberlain
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | - Anthony Griffiths
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | - Sean M. Collins
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | - Kejun Wu
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | - Matthew D. Simmons
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | - Richard A. Bourne
- Institute of Process Research & Development School of Chemistry and School of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | | | - Jake Seymour
- School of Chemistry, Food and Pharmacy University of Reading Reading RG6 6AT UK
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18
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Doherty S, Knight JG, Backhouse T, Tran TST, Paterson R, Stahl F, Alharbi HY, Chamberlain TW, Bourne RA, Stones R, Griffiths A, White JP, Aslam Z, Hardare C, Daly H, Hart J, Temperton RH, O'Shea JN, Rees NH. Highly efficient and selective aqueous phase hydrogenation of aryl ketones, aldehydes, furfural and levulinic acid and its ethyl ester catalyzed by phosphine oxide-decorated polymer immobilized ionic liquid-stabilized ruthenium nanoparticles. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00205a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Phosphine oxide-decorated polymer immobilized ionic liquid stabilized RuNPs catalyse the hydrogenation of aryl ketones with remarkable selectivity for the CO bond, complete hydrogenation to the cyclohexylalcohol and hydrogenation of levulinic acid to γ-valerolactone.
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Affiliation(s)
- S. Doherty
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - J. G. Knight
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. Backhouse
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. S. T. Tran
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - R. Paterson
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - F. Stahl
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - H. Y. Alharbi
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. W. Chamberlain
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - R. A. Bourne
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - R. Stones
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - A. Griffiths
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - J. P. White
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - Z. Aslam
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - C. Hardare
- School of Chemical Engineering and Analytical Sciences, The University of Manchester, The Mill, Sackville Street Campus, Manchester, M13 9PL, UK
| | - H. Daly
- School of Chemical Engineering and Analytical Sciences, The University of Manchester, The Mill, Sackville Street Campus, Manchester, M13 9PL, UK
| | - J. Hart
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - R. H. Temperton
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - J. N. O'Shea
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - N. H. Rees
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UK
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19
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Jansen M, Juranyi F, Yarema O, Seydel T, Wood V. Ligand Dynamics in Nanocrystal Solids Studied with Quasi-Elastic Neutron Scattering. ACS Nano 2021; 15:20517-20526. [PMID: 34878757 DOI: 10.1021/acsnano.1c09073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanocrystal surfaces are commonly populated by organic ligands, which play a determining role in the optical, electronic, thermal, and catalytic properties of the individual nanocrystals and their assemblies. Understanding the bonding of ligands to nanocrystal surfaces and their dynamics is therefore important for the optimization of nanocrystals for different applications. In this study, we use temperature-dependent, quasi-elastic neutron scattering (QENS) to investigate the dynamics of different surface bound alkanethiols in lead sulfide nanocrystal solids. We select alkanethiols with mono- and dithiol terminations, as well as different backbone types and lengths. QENS spectra are collected both on a time-of-flight spectrometer and on a backscattering spectrometer, allowing us to investigate ligand dynamics in a time range from a few picoseconds to nanoseconds. Through model-based analysis of the QENS data, we find that ligands can either (1) precess around a central axis, while simultaneously rotating around their own molecular axis, or (2) only undergo uniaxial rotation with no precession. We establish the percentage of ligands undergoing each type of motion, the average relaxation times, and activation energies for these motions. We determine, for example, that dithiols which link facets of neighboring nanocrystals only exhibit uniaxial rotation and that longer ligands have higher activation energies and show smaller opening angles of precession due to stronger ligand-ligand interactions. Generally, this work provides insight into the arrangement and dynamics of ligands in nanocrystal solids, which is key to understanding their mechanical and thermal properties, and, more generally, highlights the potential of QENS for studying ligand behavior.
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Affiliation(s)
- Maximilian Jansen
- Department of Information Technology and Electrical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | - Fanni Juranyi
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Olesya Yarema
- Department of Information Technology and Electrical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | - Tilo Seydel
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Vanessa Wood
- Department of Information Technology and Electrical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
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20
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Staiger L, Kratky T, Günther S, Urstoeger A, Schuster M, Tomanek O, Zbořil R, Fischer RW, Fischer RA, Cokoja M. Nanometallurgy in solution: organometallic synthesis of intermetallic Pd-Ga colloids and their activity in semi-hydrogenation catalysis. Nanoscale 2021; 13:15038-15047. [PMID: 34533180 DOI: 10.1039/d1nr04550d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanoparticles (NPs) of Pd1--xGax (x = 0.67, 0.5, 0.33), stabilized in non-aqueous colloidal solution, were obtained via an organometallic approach under mild conditions using [Pd2(dvds)3] and GaCp* as all-hydrocarbon ligated metal-precursor compounds (dvds = 1,1,3,3-tetramethyl-1,3-divinyl-disiloxane; Cp* = η5-C5Me5; Me = CH3). The reaction of the two precursors involves the formation of a library of molecular clusters [PdnGamCp*y(dvds)z], as shown by liquid injection field desorption ionization mass spectrometry (LIFDI-MS). Full characterization of the catalytic system (HR-TEM, EDX, DLS, PXRD, XPS, NMR, IR, Raman) confirmed the formation of ultra-small, spherical NPs with narrow size distributions ranging from 1.2 ± 0.2 nm to 2.1 ± 0.4 nm (depending on the Pd : Ga ratio). The catalytic performance of the Pd1--xGax NPs in the semi-hydrogenation of terminal and internal alkynes and the influence of the gallium content on product selectivity were investigated. The highest activities (65%) and selectivities (81%) are achieved using colloids with a "stoichiometric" Pd/Ga ratio of 1 : 1 at 0 °C and 2.0 bar H2 pressure. While lower Ga ratios lead to an increase in activity, higher Ga contents increase the olefin selectivity but are detrimental to the activity.
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Affiliation(s)
- Lena Staiger
- Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center and Faculty of Chemistry, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, D-85747 Garching bei München, Germany.
| | - Tim Kratky
- Chair of Physical Chemistry with Focus on Catalysis, Catalysis Research Center and Department of Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Sebastian Günther
- Chair of Physical Chemistry with Focus on Catalysis, Catalysis Research Center and Department of Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Alexander Urstoeger
- Chair of Analytical Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Michael Schuster
- Chair of Analytical Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Ondrej Tomanek
- Regional Center of Advanced Technologies and Materials RCPTM, Olomouc, Czech Republic
| | - Radek Zbořil
- Regional Center of Advanced Technologies and Materials RCPTM, Olomouc, Czech Republic
| | | | - Roland A Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center and Faculty of Chemistry, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, D-85747 Garching bei München, Germany.
| | - Mirza Cokoja
- Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center and Faculty of Chemistry, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, D-85747 Garching bei München, Germany.
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21
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Schröder C, Schmidt MC, Haugg PA, Baumann A, Smyczek J, Schauermann S. Understanding Ligand‐Directed Heterogeneous Catalysis: When the Dynamically Changing Nature of the Ligand Layer Controls the Hydrogenation Selectivity. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Carsten Schröder
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Marvin C. Schmidt
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Philipp A. Haugg
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Ann‐Katrin Baumann
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Jan Smyczek
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Swetlana Schauermann
- Institute of Physical Chemistry Christian-Albrechts-University Kiel Max-Eyth-Str. 2 24118 Kiel Germany
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22
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Luo Q, Wang Z, Chen Y, Mao S, Wu K, Zhang K, Li Q, Lv G, Huang G, Li H, Wang Y. Dynamic Modification of Palladium Catalysts with Chain Alkylamines for the Selective Hydrogenation of Alkynes. ACS Appl Mater Interfaces 2021; 13:31775-31784. [PMID: 34227385 DOI: 10.1021/acsami.1c09682] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Selective hydrogenation of alkynes plays a pivotal role in the field of chemical production but still suffers from restrained catalytic activity and low alkene selectivity. Herein, a dynamic modification strategy was utilized by preferentially attaching diethylenetriamine (DETA) to the surface of the support to modify the Pd catalyst. The DETA-modified Pd catalyst demonstrates unprecedented reactivity (14,412 h-1) and selectivity as high as 94% for the semihydrogenation of 2-methyl-3-butyn-2-ol at 35 °C, presenting a 36-fold higher reactivity than the Lindlar catalyst. Moreover, the yield exceeds 98.2% at full conversion under no solvent and organic adsorbate conditions, indicating the potential applications for industrial production. Systematic studies reveal that flexible DETA serves in a reversible "breathing pattern" for the molecular discrimination by constructing dynamic metal-support interaction (DMSI), enabling selective exclusion of alkenes from the Pd surface. DETA is competent to dynamically adjust the adsorption behaviors of reactants and effectively boost the intrinsic activity of the modified catalyst. Impressively, the DETA-modified Pd catalyst exhibits exceptional stability even after being recycled 20 times. This work sheds light on a novel and applicable method for the rational design of heterogeneous catalysts via DMSI.
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Affiliation(s)
- Qian Luo
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Zhe Wang
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yuzhuo Chen
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Shanjun Mao
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Kejun Wu
- Zhejiang NHU Company Ltd, Xinchang County 312500, Zhejiang Province, P. R. China
| | - Kaichao Zhang
- Zhejiang NHU Company Ltd, Xinchang County 312500, Zhejiang Province, P. R. China
| | - Qichuan Li
- Zhejiang NHU Company Ltd, Xinchang County 312500, Zhejiang Province, P. R. China
| | - Guofeng Lv
- Zhejiang NHU Company Ltd, Xinchang County 312500, Zhejiang Province, P. R. China
| | - Guodong Huang
- Zhejiang NHU Company Ltd, Xinchang County 312500, Zhejiang Province, P. R. China
| | - Haoran Li
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Yong Wang
- Advanced Materials and Catalysis Group, Institute of Catalysis, Center of Chemistry for Frontier Technolgies, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
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23
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Schröder C, Schmidt MC, Haugg PA, Baumann AK, Smyczek J, Schauermann S. Understanding Ligand-Directed Heterogeneous Catalysis: When the Dynamically Changing Nature of the Ligand Layer Controls the Hydrogenation Selectivity. Angew Chem Int Ed Engl 2021; 60:16349-16354. [PMID: 34008906 PMCID: PMC8362066 DOI: 10.1002/anie.202103960] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/03/2021] [Indexed: 12/17/2022]
Abstract
We present a mechanistic study on the formation and dynamic changes of a ligand‐based heterogeneous Pd catalyst for chemoselective hydrogenation of α,β‐unsaturated aldehyde acrolein. Deposition of allyl cyanide as a precursor of a ligand layer renders Pd highly active and close to 100 % selective toward propenol formation by promoting acrolein adsorption in a desired configuration via the C=O end. Employing a combination of real‐space microscopic and in‐operando spectroscopic surface‐sensitive techniques, we show that an ordered active ligand layer is formed under operational conditions, consisting of stable N‐butylimine species. In a competing process, unstable amine species evolve on the surface, which desorb in the course of the reaction. Obtained atomistic‐level insights into the formation and dynamic evolution of the active ligand layer under operational conditions provide important input required for controlling chemoselectivity by purposeful surface functionalization.
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Affiliation(s)
- Carsten Schröder
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Marvin C Schmidt
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Philipp A Haugg
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Ann-Katrin Baumann
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Jan Smyczek
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Swetlana Schauermann
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
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24
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Affiliation(s)
- Linfang Lu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Shihui Zou
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Baizeng Fang
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
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25
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Affiliation(s)
- Avishek Ghatak
- Department of Chemistry, Dr. A. P. J. Abdul Kalam Government College West Bengal State University) Kolkata 700156 India
| | - Madhurima Das
- Basic Science Department, Pailan College of Management and Technology Maulana Abul Kalam Azad University of Technology) Kolkata 700104 India
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26
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Zakhtser A, Naitabdi A, Benbalagh R, Rochet F, Salzemann C, Petit C, Giorgio S. Chemical Evolution of Pt-Zn Nanoalloys Dressed in Oleylamine. ACS Nano 2021; 15:4018-4033. [PMID: 32786209 DOI: 10.1021/acsnano.0c03366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report on the shape, composition (from Pt95Zn5 to Pt77Zn23), and surface chemistry of Pt-Zn nanoparticles obtained by reduction of precursors M2+(acac)2- (M2+: Pt2+ and Zn2+) in oleylamine, which serves as both solvent and ligand. We show first that the addition of phenyl ether or benzyl ether determines the composition and shape of the nanoparticles, which point to an adsorbate-controlled synthesis. The organic (ligand)/inorganic (nanoparticles) interface is characterized on the structural and chemical level. We observe that the particles, after washing with ethanol, are coated with oleylamine and the oxidation products of the latter, namely, an aldimine and a nitrile. After exposure to air, the particles oxidize, covering themselves with a few monolayer thick ZnO film, which is certainly discontinuous when the particles are low in zinc. Pt-Zn particles are unstable and prone to losing Zn. We have strong indications that the driving force is the preferential oxidation of the less noble metal. Finally, we show that adsorption of CO on the surface of nanoparticles modifies the oxidation state of amine ligands and attribute it to the displacement of hydrogen adsorbed on Pt. All the structural and chemical information provided by the combination of electron microscopy and X-ray photoelectron spectroscopy allows us to give a fairly accurate picture of the surface of nanoparticles and to better understand why Pt-Zn alloys are efficient in certain electrocatalytic reactions such as the oxidation of methanol.
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Affiliation(s)
- Alter Zakhtser
- Sorbonne Université, CNRS, MONARIS, UMR 8233, 4 Place Jussieu, 75005 Paris, France
- Sorbonne Université, CNRS, LCPMR, UMR 7614, 4 Place Jussieu, 75005 Paris, France
| | - Ahmed Naitabdi
- Sorbonne Université, CNRS, LCPMR, UMR 7614, 4 Place Jussieu, 75005 Paris, France
| | - Rabah Benbalagh
- Sorbonne Université, CNRS, LCPMR, UMR 7614, 4 Place Jussieu, 75005 Paris, France
| | - François Rochet
- Sorbonne Université, CNRS, LCPMR, UMR 7614, 4 Place Jussieu, 75005 Paris, France
| | - Caroline Salzemann
- Sorbonne Université, CNRS, MONARIS, UMR 8233, 4 Place Jussieu, 75005 Paris, France
| | - Christophe Petit
- Sorbonne Université, CNRS, MONARIS, UMR 8233, 4 Place Jussieu, 75005 Paris, France
| | - Suzanne Giorgio
- Aix Marseille Université, CNRS, CINaM, UMR 7325, 13288 Marseille, France
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27
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Affiliation(s)
- Bowen Wang
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research, University of Ottawa, Ottawa K1N 6N5, Ontario, Canada
| | - Anabel E. Lanterna
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research, University of Ottawa, Ottawa K1N 6N5, Ontario, Canada
| | - Juan C. Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research, University of Ottawa, Ottawa K1N 6N5, Ontario, Canada
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28
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Yu X, Zhang Y, Liu H, Liang S, Sun L, Hu X, Fang W, Chen Z, Yi X. Regulating Pd/Al 2O 3 catalyst by g-C 3N 4 toward the enhanced selectivity of isoprene hydrogenation. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00596k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The catalytic performance of Pd NPs in the selective hydrogenation of isoprene is modulated by g-C3N4 deposits on commercial alumina supports.
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Affiliation(s)
- Xiang Yu
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Yuqi Zhang
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Huan Liu
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Shunqin Liang
- Petro China Lanzhou Petrochemical Research Center
- Lanzhou 730000
- China
| | - Limin Sun
- Petro China Lanzhou Petrochemical Research Center
- Lanzhou 730000
- China
| | - Xiaoli Hu
- Petro China Lanzhou Petrochemical Research Center
- Lanzhou 730000
- China
| | - Weiping Fang
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Zhou Chen
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Xiaodong Yi
- College of Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- P. R. China
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29
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Du M, Meng Y, Zhu G, Gao M, Hsu HY, Liu F. Intrinsic electrocatalytic activity of a single IrO x nanoparticle towards oxygen evolution reaction. Nanoscale 2020; 12:22014-22021. [PMID: 33140807 DOI: 10.1039/d0nr05780k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Identifying the intrinsic electrocatalytic activity of an individual nanoparticle is challenging as traditional ensemble measurements only provide average activity over a large number of nanoparticles and may be greatly affected by the ensemble properties, irrelevant to the nanoparticle itself. Here, single-particle collision electrochemistry is used to investigate the electrocatalytic activity of a single IrOx nanoparticle towards the oxygen evolution reaction (OER). The collision frequency is linearly proportional to the nanoparticle concentration. The mean peak current and transferred charge, extracted from current spikes of the collision, present a similar potential dependence relevant to IrOx intrinsic activity. The turnover frequency (TOF) is determined as 1.55 × 102 O2 s-1, which is orders of magnitude larger than TOFs of the reported ensemble systems. In addition, the deactivation of a single IrOx nanoparticle is also explored based on a half-width analysis of current spikes. This versatilely applicable method provides new insights into the intrinsic performance of a single nanoparticle, which is essential to reveal the structure-activity relations of nanoscale materials for the rational design of advanced catalysts.
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Affiliation(s)
- Minshu Du
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China.
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30
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Wang C, Hosomi T, Nagashima K, Takahashi T, Zhang G, Kanai M, Yoshida H, Yanagida T. Phosphonic Acid Modified ZnO Nanowire Sensors: Directing Reaction Pathway of Volatile Carbonyl Compounds. ACS Appl Mater Interfaces 2020; 12:44265-44272. [PMID: 32867471 DOI: 10.1021/acsami.0c10332] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Surface molecular transformations on nanoscale metal oxides are inherently complex, and directing those reaction pathways is still challenging but important for designing their various applications, including molecular sensing, catalysts, and others. Here, a rational strategy to direct a reaction pathway of volatile carbonyl compounds (nonanal: biomarker) on single-crystalline ZnO nanowire surfaces via molecular modification is demonstrated. The introduction of a methylphosphonic acid modification on the ZnO nanowire surface significantly alters the surface reaction pathway of nonanal via suppressing the detrimental aldol condensation reaction. This is directed by intentionally decreasing the probability of two neighboring molecular activations on the nanowire surface. Spectrometric measurements reveal the correlation between the suppression of the aldol condensation surface reaction and the improvement in the sensor performance. This tailored surface reaction pathway effectively reduces the operating temperature from 200 to 100 °C while maintaining the sensitivity. This is because the aldol condensation product ((E)-2-heptyl-2-undecenal) requires a higher temperature to desorb from the surface. Thus, the proposed facile strategy offers an interesting approach not only for the rational design of metal oxide sensors for numerous volatile carbonyl compounds but also for tailoring various surface reaction pathways on complex nanoscale metal oxides.
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Affiliation(s)
- Chen Wang
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Masaki Kanai
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Hideto Yoshida
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Takeshi Yanagida
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
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31
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Sodreau A, Vivien A, Moisset A, Salzemann C, Petit C, Petit M. Simpler and Cleaner Synthesis of Variously Capped Cobalt Nanocrystals Applied in the Semihydrogenation of Alkynes. Inorg Chem 2020; 59:13972-13978. [DOI: 10.1021/acs.inorgchem.0c01641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- A. Sodreau
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - A. Vivien
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - A. Moisset
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - C. Salzemann
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - C. Petit
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - M. Petit
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
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32
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Isozaki K, Taguchi T, Ishibashi K, Shimoaka T, Kurashige W, Negishi Y, Hasegawa T, Nakamura M, Miki K. Mechanistic Study of Silane Alcoholysis Reactions with Self-Assembled Monolayer-Functionalized Gold Nanoparticle Catalysts. Catalysts 2020; 10:908. [DOI: 10.3390/catal10080908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The self-assembled monolayer (SAM)-modified metallic nanoparticles (MNPs) often exhibit improved chemoselectivity in various catalytic reactions by controlling the reactants’ orientations adsorbed in the SAM; however, there have been a few examples showing that the reaction rate, i.e., catalytic activity, is enhanced by the SAM-modification of MNP catalysts. The critical parameters that affect the catalytic activity, such as the supports, nanoparticle size, and molecular structures of the SAM components, remain uninvestigated in these sporadic literature precedents. Here, we report the mechanistic investigation on the effects of those parameters on the catalytic activity of alkanethiolate SAM-functionalized gold nanoparticles (AuNPs) toward silane alcoholysis reactions. The evaluation of the catalytic reaction over two-dimensionally arrayed dodecanethiolate SAM-functionalized AuNPs with different supports revealed the electronic interactions between AuNPs and the supports contributing to the rate enhancement. Additionally, an unprecedented size effect appeared—the AuNP with a 20 nm radius showed higher catalytic activity than those at 10 and 40 nm. Infrared reflection–absorption spectroscopy revealed that the conformational change of alkyl chains of the SAM affects the entrapment of reactants and products inside the SAM, and therefore brings about the acceleration effect. These findings provide a guideline for further applying the SAM-functionalization technique to stereoselective organic transformations with designer MNP catalysts.
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33
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Barsbay M, Çaylan Özgür T, Sütekin SD, Güven O. Effect of brush length of stabilizing grafted matrix on size and catalytic activity of metal nanoparticles. Eur Polym J 2020; 134:109811. [DOI: 10.1016/j.eurpolymj.2020.109811] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Huang L, Subramanian R, Wang J, Kwon Oh J, Ye Z. Ligand screening for palladium nanocatalysts towards selective hydrogenation of alkynes. Molecular Catalysis 2020. [DOI: 10.1016/j.mcat.2020.110923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Maligal‐Ganesh RV, Pei Y, Xiao C, Chen M, Goh TW, Sun W, Wu J, Huang W. Sub‐5 nm Intermetallic Nanoparticles Confined in Mesoporous Silica Wells for Selective Hydrogenation of Acetylene to Ethylene. ChemCatChem 2020. [DOI: 10.1002/cctc.202000155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Yuchen Pei
- Department of Chemistry Iowa State University Ames IA 50010 USA
| | - Chaoxian Xiao
- Department of Chemistry Iowa State University Ames IA 50010 USA
| | - Minda Chen
- Department of Chemistry Iowa State University Ames IA 50010 USA
- Ames Laboratory U.S. Department of Energy Ames IA 50010 USA
| | - Tian Wei Goh
- Department of Chemistry Iowa State University Ames IA 50010 USA
| | - Weijun Sun
- Department of Chemistry Iowa State University Ames IA 50010 USA
| | - Jiashu Wu
- Department of Chemistry Iowa State University Ames IA 50010 USA
| | - Wenyu Huang
- Department of Chemistry Iowa State University Ames IA 50010 USA
- Ames Laboratory U.S. Department of Energy Ames IA 50010 USA
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36
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Zhang D, Liu J, Du P, Zhang Z, Ning X, Deng Y, Yin D, Chen J, Han Z, Lu X. Cross-Linked Surface Engineering to Improve Iron Porphyrin Catalytic Activity. Small 2020; 16:e1905889. [PMID: 32249524 DOI: 10.1002/smll.201905889] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/18/2020] [Accepted: 03/06/2020] [Indexed: 06/11/2023]
Abstract
Quasi-two-dimensional (QTD) structural heterogeneous catalysts have attracted a broad interest in multidisciplinary research due to their unique structure, preeminent surface properties and outstanding catalytic performance. Herein, a HZIF@TCPP-Fe/Fe heterogeneous catalyst based on cross-linked surface engineering is constructed by supporting QTD TCPP-Fe/Fe ultra-thin metallized film (≈2 nm) on hollow skeleton of zeolite imidazolate frameworks. The designed QTD structure exhibits high efficiency for the catalytic oxidative dehydrogenation of aromatic hydrazides reactions which is the key technology in various industrial processes. Taking advantage of QTD structure with excellent accessibility, the metallized film with irregular defects not only enhances electron transfer during the reaction but also exposes more surface-active sites. Furthermore, the prepared HZIF@TCPP-Fe/Fe heterogeneous catalyst can be recycled and reused, which is of great significance in the field of green chemistry.
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Affiliation(s)
- Dongxu Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Jia Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Peiyao Du
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhen Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Xingming Ning
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Yang Deng
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Dan Yin
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Jing Chen
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Zhengang Han
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Xiaoquan Lu
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry School of Science, Tianjin University, Tianjin, 300072, P. R. China
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
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37
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Fiorio JL, Barbosa ECM, Kikuchi DK, Camargo PHC, Rudolph M, Hashmi ASK, Rossi LM. Piperazine-promoted gold-catalyzed hydrogenation: the influence of capping ligands. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02016k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The presence of capping ligands can block the adsorption of the amine ligand on gold NPs, preventing the formation of a ligand–metal interface able to activate H2 for selective hydrogenation reactions.
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Affiliation(s)
- Jhonatan L. Fiorio
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Eduardo C. M. Barbosa
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Danielle K. Kikuchi
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Pedro H. C. Camargo
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Matthias Rudolph
- Organisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg University
- 69120 Heidelberg
- Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg University
- 69120 Heidelberg
- Germany
| | - Liane M. Rossi
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
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38
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Abstract
Interfacial chemistry dramatically impacts the activity (performance) and reactivity (mechanism) of nanoparticle catalysts.
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Affiliation(s)
- David Ung
- University of Washington
- Department of Chemistry
- Seattle
- USA
| | - Ian A. Murphy
- University of Washington
- Department of Chemistry
- Seattle
- USA
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39
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Rai RK, Awasthi MK, Singh VK, Barman SR, Behrens S, Singh SK. Aqueous phase semihydrogenation of alkynes over Ni–Fe bimetallic catalysts. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01153c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Bimetallic Ni–Fe catalysts (Ni/Fe, 1 : 1, 1 : 3, and 3 : 1) are synthesized and explored for their catalytic activity in semihydrogenation of internal alkynes using H2 gas in water–ethanol solution.
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Affiliation(s)
- Rohit K. Rai
- Catalysis Group
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Mahendra K. Awasthi
- Catalysis Group
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Vipin K. Singh
- UGC-DAE Consortium for Scientific Research
- Indore 452001
- India
| | | | - Silke Behrens
- Institut für Katalyseforschung und technologie (IKFT)
- Karlsruher Institut für Technologie (KIT)
- D-76344 Eggenstein-Leopoldshafen
- Germany
| | - Sanjay K. Singh
- Catalysis Group
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
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40
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Zhu W, Chen Z, Pan Y, Dai R, Wu Y, Zhuang Z, Wang D, Peng Q, Chen C, Li Y. Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction. Adv Mater 2019; 31:e1800426. [PMID: 30125990 DOI: 10.1002/adma.201800426] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 06/10/2018] [Indexed: 06/08/2023]
Abstract
Hollow nanomaterials have attracted a broad interest in multidisciplinary research due to their unique structure and preeminent properties. Owing to the high specific surface area, well-defined active site, delimited void space, and tunable mass transfer rate, hollow nanostructures can serve as excellent catalysts, supports, and reactors for a variety of catalytic applications, including photocatalysis, electrocatalysis, heterogeneous catalysis, homogeneous catalysis, etc. Based on state-of-the-art synthetic methods and characterization techniques, researchers focus on the purposeful functionalization of hollow nanomaterials for catalytic mechanism studies and intricate catalytic reactions. Herein, an overview of current reports with respect to the catalysis of functionalized hollow nanomaterials is given, and they are classified into five types of versatile strategies with a top-down perspective, including textual and composition modification, encapsulation, multishelled construction, anchored single atomic site, and surface molecular engineering. In the detailed case studies, the design and construction of hierarchical hollow catalysts are discussed. Moreover, since hollow structure offers more than two types of spatial-delimited sites, complicated catalytic reactions are elaborated. In summary, functionalized hollow nanomaterials provide an ideal model for the rational design and development of efficient catalysts.
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Affiliation(s)
- Wei Zhu
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
- State Key Lab of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zheng Chen
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yuan Pan
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Ruoyun Dai
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yue Wu
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Zhongbin Zhuang
- State Key Lab of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Qing Peng
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Chen Chen
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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41
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Affiliation(s)
- Smadar Attia
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Marvin C. Schmidt
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Carsten Schröder
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Swetlana Schauermann
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
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42
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Affiliation(s)
- Jacinto Sá
- Institute of Physical ChemistryPolish Academy of Sciences ul. Kasprzaka 44/52 01-224 Warsaw Poland
- Department of Chemistry, Ångström LaboratoryUppsala University Box 532 751 20 Uppsala Sweden
| | - J. Will Medlin
- Department of Chemical and Biological EngineeringUniversity of Colorado Boulder, JSCBB D125 3415 Colorado Avenue, Boulder Colorado 80303 USA
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43
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Doherty S, Knight JG, Backhouse T, Summers RJ, Abood E, Simpson W, Paget W, Bourne RA, Chamberlain TW, Stones R, Lovelock KRJ, Seymour JM, Isaacs MA, Hardacre C, Daly H, Rees NH. Highly Selective and Solvent-Dependent Reduction of Nitrobenzene to N-Phenylhydroxylamine, Azoxybenzene, and Aniline Catalyzed by Phosphino-Modified Polymer Immobilized Ionic Liquid-Stabilized AuNPs. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00347] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Simon Doherty
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Julian G. Knight
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Tom Backhouse
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Ryan J. Summers
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Einas Abood
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - William Simpson
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - William Paget
- NUCAT, School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Richard A. Bourne
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Thomas W. Chamberlain
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Rebecca Stones
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Kevin R. J. Lovelock
- School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AT, U.K
| | - Jake M. Seymour
- School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AT, U.K
| | - Mark A. Isaacs
- EPSRC National Facility for XPS (HarwellXPS),
Research Complex at Harwell (RCaH), Rutherford Appleton
Laboratory, Room G.63, Harwell, Didcot, Oxfordshire OX11 0FA, U.K
| | - Christopher Hardacre
- School of Chemical Engineering and Analytical Science, The University of Manchester, The Mill, Sackville Street Campus, Manchester M13 9PL, U.K
| | - Helen Daly
- School of Chemical Engineering and Analytical Science, The University of Manchester, The Mill, Sackville Street Campus, Manchester M13 9PL, U.K
| | - Nicholas H. Rees
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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44
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Kuwahara Y, Kango H, Yamashita H. Pd Nanoparticles and Aminopolymers Confined in Hollow Silica Spheres as Efficient and Reusable Heterogeneous Catalysts for Semihydrogenation of Alkynes. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04653] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Hiroto Kango
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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45
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Xiang G, Tang Y, Liu Z, Zhu W, Liu H, Wang J, Zhong G, Li J, Wang X. Probing Ligand-Induced Cooperative Orbital Redistribution That Dominates Nanoscale Molecule-Surface Interactions with One-Unit-Thin TiO 2 Nanosheets. Nano Lett 2018; 18:7809-7815. [PMID: 30407013 DOI: 10.1021/acs.nanolett.8b03572] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Understanding the general electronic principles underlying molecule-surface interactions at the nanoscale is crucial for revealing the processes based on chemisorption, like catalysis, surface ligation, surface fluorescence, etc. However, the electronic mechanisms of how surface states affect and even dominate the properties of nanomaterials have long remained unclear. Here, using one-unit-thin TiO2 nanosheet as a model surface platform, we find that surface ligands can competitively polarize and confine the valence 3d orbitals of surface Ti atoms from delocalized energy band states to localized chemisorption bonds, through probing the surface chemical interaction at the orbital level with near-edge X-ray absorption fine structure (NEXAFS). Such ligand-induced orbital redistributions, which are revealed by combining experimental discoveries, quantum calculations, and theoretical analysis, are cooperative with ligand coverages and can enhance the strength of chemisorption and ligation-induced surface effects on nanomaterials. The model and concept of nanoscale cooperative chemisorption reveal the general physical principle that drives the coverage-dependent ligand-induced surface effects on regulating the electronic structures, surface activity, optical properties, and chemisorption strength of nanomaterials.
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Affiliation(s)
- Guolei Xiang
- State Key Laboratory of Chemical Resource Engineering, School of Science , Beijing University of Chemical Technology , Beijing , 100029 , P.R. China
| | - Yan Tang
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P.R. China
| | - Zigeng Liu
- Forschungszentrum Jülich GmbH , Institute of Energy and Climate Research Fundamental Electrochemistry (IEK-9) , Jülich , 52425 , Germany
- Max-Planck-Institute for Chemical Energy Conversion , Stiftstrasse 34-36 , Mülheim an der Ruhr , D-45470 , Germany
| | - Wei Zhu
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P.R. China
| | - Haitao Liu
- Department of Chemistry , University of Pittsburgh , Pittsburgh , Pennsylvania 15260 , United States
| | - Jiaou Wang
- Beijing Synchrotron Radiation Facility , Institute of High Energy Physics, Chinese Academy of Science , Beijing , 100049 , P.R. China
| | - Guiming Zhong
- Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences , Xiamen , Fujian 361021 , P.R. China
| | - Jun Li
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P.R. China
| | - Xun Wang
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P.R. China
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Jiadong Z, Yanyan S, Sun Z. Bimetallic nanoporous Pd-Ag prepared by dealloying with polyvinylpyrrolidone and their electrocatalytic properties. Nanotechnology 2018; 29:485401. [PMID: 30204126 DOI: 10.1088/1361-6528/aae05e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bimetallic nanoporous Pd-Ag solid solution alloys with hierarchical structure were prepared by dealloying melt-spun Al-Pd-Ag ribbons in a 10 wt% H3PO4 solution. Electrocatalytic properties of nanoporous Pd-Ag alloys were measured in comparison with the nanoporous Pd without Ag. Experimental results showed that the nanoporous Pd-Ag alloys displayed electrocatalytic properties superior to their Ag-free counterparts. In particular, the optimised composition was revealed to be Pd/Ag = 3/2 in atomic ratio in the precursor with fixed 85 at% Al alloys, which yielded in a peak current density in the nanoporous Pd-Ag alloy two times that of the pure Pd one. The electrocatalytic activity of nanoporous Pd-Ag alloy with refined microstructure was further increased up to three times of the pure Pd one by adding 1 mM polyvinylpyrrolidone (PVP) into the H3PO4 solution. The underlying mechanism of refinement was related to a restriction effect on the free diffusion of Pd and Ag under adsorption of the PVP macromolecules. The significant improvement in the electrocatalytic properties was attributed to the dual promotion by the electron transfer from PVP to Pd-Ag and by a synergistic effect between Pd and Ag.
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Affiliation(s)
- Zuo Jiadong
- School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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da Silva FP, Fiorio JL, Gonçalves RV, Teixeira-Neto E, Rossi LM. Synergic Effect of Copper and Palladium for Selective Hydrogenation of Alkynes. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03627] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fernanda P. da Silva
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Jhonatan L. Fiorio
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Renato V. Gonçalves
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
| | - Erico Teixeira-Neto
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, Sao Paulo, Brazil
| | - Liane M. Rossi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
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Kaeffer N, Larmier K, Fedorov A, Copéret C. Origin of ligand-driven selectivity in alkyne semihydrogenation over silica-supported copper nanoparticles. J Catal 2018; 364:437-45. [DOI: 10.1016/j.jcat.2018.06.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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San KA, Shon YS. Synthesis of Alkanethiolate-Capped Metal Nanoparticles Using Alkyl Thiosulfate Ligand Precursors: A Method to Generate Promising Reagents for Selective Catalysis. Nanomaterials (Basel) 2018; 8:E346. [PMID: 29783714 PMCID: PMC5977360 DOI: 10.3390/nano8050346] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 12/27/2022]
Abstract
Evaluation of metal nanoparticle catalysts functionalized with well-defined thiolate ligands can be potentially important because such systems can provide a spatial control in the reactivity and selectivity of catalysts. A synthetic method utilizing Bunte salts (sodium S-alkylthiosulfates) allows the formation of metal nanoparticles (Au, Ag, Pd, Pt, and Ir) capped with alkanethiolate ligands. The catalysis studies on Pd nanoparticles show a strong correlation between the surface ligand structure/composition and the catalytic activity and selectivity for the hydrogenation/isomerization of alkenes, dienes, trienes, and allylic alcohols. The high selectivity of Pd nanoparticles is driven by the controlled electronic properties of the Pd surface limiting the formation of Pd⁻alkene adducts (or intermediates) necessary for (additional) hydrogenation. The synthesis of water soluble Pd nanoparticles using ω-carboxylate-S-alkanethiosulfate salts is successfully achieved and these Pd nanoparticles are examined for the hydrogenation of various unsaturated compounds in both homogeneous and heterogeneous environments. Alkanethiolate-capped Pt nanoparticles are also successfully synthesized and further investigated for the hydrogenation of various alkynes to understand their geometric and electronic surface properties. The high catalytic activity of activated terminal alkynes, but the significantly low activity of internal alkynes and unactivated terminal alkynes, are observed for Pt nanoparticles.
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Affiliation(s)
- Khin Aye San
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd., Long Beach, CA 90840, USA.
| | - Young-Seok Shon
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd., Long Beach, CA 90840, USA.
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Maligal-Ganesh RV, Brashler K, Luan X, Goh TW, Gustafson J, Wu J, Huang W. Enhanced Chemoselectivity in Pt–Fe@mSiO2 Bimetallic Nanoparticles in the Absence of Surface Modifying Ligands. Top Catal 2018. [DOI: 10.1007/s11244-018-0933-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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