1
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Wu X, Steinmann SN, Michel C. Gaussian attractive potential for carboxylate/cobalt surface interactions. J Chem Phys 2023; 159:164115. [PMID: 37902224 DOI: 10.1063/5.0173351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/09/2023] [Indexed: 10/31/2023] Open
Abstract
Ligand-decorated metal surfaces play a pivotal role in various areas of chemistry, particularly in selective catalysis. Molecular dynamics simulations at the molecular mechanics level of theory are best adapted to gain complementary insights to experiments regarding the structure and dynamics of such organic films. However, standard force fields tend to capture only weak physisorption interactions. This is inadequate for ligands that are strongly adsorbed such as carboxylates on metal surfaces. To address this limitation, we employ the Gaussian Lennard-Jones (GLJ) potential, which incorporates an attractive Gaussian potential between the surface and ligand atoms. Here, we develop this approach for the interaction between cobalt surfaces and carboxylate ligands. The accuracy of the GLJ approach is validated through the analysis of the interaction of oxygen with two distinct cobalt surfaces. The accuracy of this method reaches a root mean square deviation (RMSD) of about 3 kcal/mol across all probed configurations, which corresponds to a percentage error of roughly 4%. Application of the GLJ force field to the dynamics of the organic layer on these surfaces reveals how the ligand concentration influences the film order, and highlights differing mobility in the x and y directions, attributable to surface corrugation on Co(112̄0). GLJ is versatile, suitable for a broad range of metal/ligand systems, and can, subsequently, be utilized to study the organic film on the adsorption/desorption of reactants and products during a catalytic process.
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Affiliation(s)
- Xiaojing Wu
- École Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, F-69364 Lyon, France
| | - Stephan N Steinmann
- École Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, F-69364 Lyon, France
| | - Carine Michel
- École Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, F-69364 Lyon, France
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2
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Luo Q, Duan H, McLaughlin MC, Wei K, Tapia J, Adewuyi JA, Shuster S, Liaqat M, Suib SL, Ung G, Bai P, Sun S, He J. Why surface hydrophobicity promotes CO 2 electroreduction: a case study of hydrophobic polymer N-heterocyclic carbenes. Chem Sci 2023; 14:9664-9677. [PMID: 37736633 PMCID: PMC10510627 DOI: 10.1039/d3sc02658b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/31/2023] [Indexed: 09/23/2023] Open
Abstract
We report the use of polymer N-heterocyclic carbenes (NHCs) to control the microenvironment surrounding metal nanocatalysts, thereby enhancing their catalytic performance in CO2 electroreduction. Three polymer NHC ligands were designed with different hydrophobicity: hydrophilic poly(ethylene oxide) (PEO-NHC), hydrophobic polystyrene (PS-NHC), and amphiphilic block copolymer (BCP) (PEO-b-PS-NHC). All three polymer NHCs exhibited enhanced reactivity of gold nanoparticles (AuNPs) during CO2 electroreduction by suppressing proton reduction. Notably, the incorporation of hydrophobic PS segments in both PS-NHC and PEO-b-PS-NHC led to a twofold increase in the partial current density for CO formation, as compared to the hydrophilic PEO-NHC. While polymer ligands did not hinder ion diffusion, their hydrophobicity altered the localized hydrogen bonding structures of water. This was confirmed experimentally and theoretically through attenuated total reflectance surface-enhanced infrared absorption spectroscopy and molecular dynamics simulation, demonstrating improved CO2 diffusion and subsequent reduction in the presence of hydrophobic polymers. Furthermore, NHCs exhibited reasonable stability under reductive conditions, preserving the structural integrity of AuNPs, unlike thiol-ended polymers. The combination of NHC binding motifs with hydrophobic polymers provides valuable insights into controlling the microenvironment of metal nanocatalysts, offering a bioinspired strategy for the design of artificial metalloenzymes.
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Affiliation(s)
- Qiang Luo
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Hanyi Duan
- Polymer Program, Institute of Materials Science, University of Connecticut Storrs CT 06269 USA
| | | | - Kecheng Wei
- Department of Chemistry, Brown University Providence Rhode Island 02912 USA
| | - Joseph Tapia
- Department of Chemical Engineering, University of Massachusetts Amherst Massachusetts 01003 USA
| | - Joseph A Adewuyi
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Seth Shuster
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Maham Liaqat
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Steven L Suib
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Gaël Ung
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Peng Bai
- Department of Chemical Engineering, University of Massachusetts Amherst Massachusetts 01003 USA
| | - Shouheng Sun
- Department of Chemistry, Brown University Providence Rhode Island 02912 USA
| | - Jie He
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
- Polymer Program, Institute of Materials Science, University of Connecticut Storrs CT 06269 USA
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3
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Wang X, Fu J, Jiang C, Liao X, Chen Y, Jia T, Chen G, Feng X. Specific and Long-Term Luminescent Monitoring of Hydrogen Peroxide in Tumor Metastasis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210948. [PMID: 36848628 DOI: 10.1002/adma.202210948] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/06/2023] [Indexed: 05/19/2023]
Abstract
Luminescent monitoring of endogenous hydrogen peroxide (H2 O2 ) in tumors is conducive to understanding metastasis and developing novel therapeutics. The clinical transformation is obstructed by the limited light penetration depth, toxicity of nano-probes, and lack of long-term monitoring modes of up to days or months. New monitoring modes are introduced via specific probes and implantable devices, which can achieve real-time monitoring with a readout frequency of 0.01 s or long-term monitoring for months to years. Near-infrared dye-sensitized upconversion nanoparticles (UCNPs) are fabricated as the luminescent probes, and the specificity to reactive oxygen species is subtly regulated by the self-assembled monolayers on the surfaces of UCNPs. Combined with the passive implanted system, a 20-day monitoring of H2 O2 in the rat model of ovarian cancer with peritoneal metastasis is achieved, in which the limited light penetration depth and toxicity of nano-probes are circumvented. The developed monitoring modes show great potential in accelerating the clinical transformation of nano-probes and biochemical detection methods.
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Affiliation(s)
- Xindong Wang
- Center for Flexible Electronics Technology, Tsinghua University, No. 30 Shuangqing Road, Beijing, 100084, P. R. China
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures, Ministry of Education, Harbin Institute of Technology, No. 92 Xidazhi Street, Harbin, 150001, P. R. China
- Institute of Flexible Electronics Technology of THU, No. 906, YaTai Road, Jiaxing, 314006, P. R. China
- Jiaxing Key Laboratory of Flexible Electronics based Intelligent Sensing and Advanced Manufacturing Technology, Jiaxing, 314006, P. R. China
| | - Ji Fu
- Institute of Flexible Electronics Technology of THU, No. 906, YaTai Road, Jiaxing, 314006, P. R. China
| | - Chang Jiang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures, Ministry of Education, Harbin Institute of Technology, No. 92 Xidazhi Street, Harbin, 150001, P. R. China
| | - Xiaohui Liao
- Institute of Flexible Electronics Technology of THU, No. 906, YaTai Road, Jiaxing, 314006, P. R. China
| | - Yiju Chen
- Institute of Flexible Electronics Technology of THU, No. 906, YaTai Road, Jiaxing, 314006, P. R. China
| | - Tao Jia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures, Ministry of Education, Harbin Institute of Technology, No. 92 Xidazhi Street, Harbin, 150001, P. R. China
| | - Guanying Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures, Ministry of Education, Harbin Institute of Technology, No. 92 Xidazhi Street, Harbin, 150001, P. R. China
| | - Xue Feng
- Center for Flexible Electronics Technology, Tsinghua University, No. 30 Shuangqing Road, Beijing, 100084, P. R. China
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4
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Bhattacharjee K, Prasad BLV. Surface functionalization of inorganic nanoparticles with ligands: a necessary step for their utility. Chem Soc Rev 2023; 52:2573-2595. [PMID: 36970981 DOI: 10.1039/d1cs00876e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
The importance of protecting inorganic nanoparticles with organic ligands and thus imparting the needed stabilization as colloidal dispersions for their potential applications is highlighted in this review.
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Affiliation(s)
- Kaustav Bhattacharjee
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road, Pune 411008, India.
| | - Bhagavatula L V Prasad
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road, Pune 411008, India.
- Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, India
- Center for Nano and Soft Matter Sciences, Bangalore 562162, India
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5
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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] [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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6
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Temperature-Dependent Activity of Gold Nanocatalysts Supported on Activated Carbon in Redox Catalytic Reactions: 5-Hydroxymethylfurfural Oxidation and 4-Nitrophenol Reduction Comparison. Catalysts 2022. [DOI: 10.3390/catal12030323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, the temperature-dependent activity of Au/AC nanocatalysts in redox catalytic reactions was investigated. To this end, a series of colloidal gold catalysts supported on activated carbon and titania were prepared by the sol immobilization method employing polyvinyl alcohol as a polymeric stabilizer at different hydrolysis degrees. The as-synthesized materials were widely characterized by spectroscopic analysis (XPS, XRD, and ATR-IR) as well as TEM microscopy and DLS/ELS measurements. Furthermore, 5-hydroxymethylfurfural (HMF) oxidation and 4-nitrophenol (4-NP) reduction were chosen to investigate the catalytic activity as a model reaction for biomass valorization and wastewater remediation. In particular, by fitting the hydrolysis degree with the kinetic data, volcano plots were obtained for both reactions, in which the maximum of the curves was represented relative to hydrolysis intermediate values. However, a comparison of the catalytic performance of the sample Au/AC_PVA-99 (hydrolysis degree of the polymer is 99%) in the two reactions showed a different catalytic behavior, probably due to the detachment of polymer derived from the different reaction temperature chosen between the two reactions. For this reason, several tests were carried out to investigate deeper the observed catalytic trend, focusing on studying the effect of the reaction temperature as well as the effect of support (metal–support interaction) by immobilizing Au colloidal nanoparticles on commercial titania. The kinetic data, combined with the characterization carried out on the catalysts, confirmed that changing the reaction conditions, the PVA behavior on the surface of the catalysts, and, therefore, the reaction outcome, is modified.
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7
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Zaera F. Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? Chem Rev 2022; 122:8594-8757. [PMID: 35240777 DOI: 10.1021/acs.chemrev.1c00905] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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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8
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Butcha S, Lapeyre V, Wattanakit C, Kuhn A. Self-assembled monolayer protection of chiral-imprinted mesoporous platinum electrodes for highly enantioselective synthesis. Chem Sci 2022; 13:2339-2346. [PMID: 35310499 PMCID: PMC8864712 DOI: 10.1039/d2sc00056c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 02/01/2022] [Indexed: 11/21/2022] Open
Abstract
In modern chemistry, chiral (electro)catalysis is a powerful strategy to produce enantiomerically pure compounds (EPC). However, it still struggles with uncontrollable stereochemistry due to side reactions, eventually producing a racemic mixture. To overcome this important challenge, a well-controlled design of chiral catalyst materials is mandatory to produce enantiomers with acceptable purity. In this context, we propose the synergetic combination of two strategies, namely the elaboration of mesoporous Pt films, imprinted with chiral recognition sites, together with the spatially controlled formation of a self-assembled monolayer. Chiral imprinted metals have been previously suggested as electrode materials for enantioselective recognition, separation and synthesis. However, the outermost surface of such electrodes is lacking chiral information and thus leads to unspecific reactions. Functionalising selectively this part of the electrode with a monolayer of organosulfur ligands allows an almost total suppression of undesired side reactions and thus leads to a boost of enantiomeric excess to values of over 90% when using these surfaces in the frame of enantioselective electrosynthesis. In addition, this strategy also decreases the total reaction time by one order of magnitude. The study therefore opens up promising perspectives for the development of heterogeneous enantioselective electrocatalysis strategies.
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Affiliation(s)
- Sopon Butcha
- School of Molecular Science and Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology 21210 Wangchan Rayong Thailand
- University of Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Site ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Véronique Lapeyre
- University of Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Site ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Chularat Wattanakit
- School of Molecular Science and Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology 21210 Wangchan Rayong Thailand
| | - Alexander Kuhn
- School of Molecular Science and Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology 21210 Wangchan Rayong Thailand
- University of Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Site ENSCBP 16 Avenue Pey Berland 33607 Pessac France
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9
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Boosting the electrocatalytic activity of ZrO2/MWCNT supported PdPt bi-metallic electrocatalyst towards ethanol oxidation reaction by electrochemical activation process and modeling by artificial neural network approach. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.02.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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10
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Mittal R, Awasthi SK. A Synergistic Magnetically Retrievable Inorganic‐Organic Hybrid Metal Oxide Catalyst for Scalable Selective Oxidation of Alcohols to Aldehydes and Ketones. ChemCatChem 2021. [DOI: 10.1002/cctc.202101262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Rupali Mittal
- Chemical Biology Laboratory Department of Chemistry University of Delhi Delhi 110007 India
| | - Satish Kumar Awasthi
- Chemical Biology Laboratory Department of Chemistry University of Delhi Delhi 110007 India
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11
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Yang N, Pattisson S, Douthwaite M, Zeng G, Zhang H, Ma J, Hutchings GJ. Influence of Stabilizers on the Performance of Au/TiO 2 Catalysts for CO Oxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02820] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nating Yang
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute (SARI), Chinese Academy of Sciences (CAS), Shanghai 201210, China
| | - Samuel Pattisson
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Mark Douthwaite
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Gaofeng Zeng
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute (SARI), Chinese Academy of Sciences (CAS), Shanghai 201210, China
| | - Hao Zhang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Jingyuan Ma
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Graham J. Hutchings
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis, FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
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12
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Masuda R, Yasukawa T, Yamashita Y, Kobayashi S. Nitrogen‐Doped Carbon Enables Heterogeneous Asymmetric Insertion of Carbenoids into Amines Catalyzed by Rhodium Nanoparticles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ryusuke Masuda
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tomohiro Yasukawa
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yasuhiro Yamashita
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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13
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Masuda R, Yasukawa T, Yamashita Y, Kobayashi S. Nitrogen-Doped Carbon Enables Heterogeneous Asymmetric Insertion of Carbenoids into Amines Catalyzed by Rhodium Nanoparticles. Angew Chem Int Ed Engl 2021; 60:12786-12790. [PMID: 33720497 DOI: 10.1002/anie.202102506] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 01/02/2023]
Abstract
Development of stable heterogeneous catalyst systems is a crucial subject to achieve sustainable society. Though metal nanoparticles are robust species, the study of asymmetric catalysis by them has been restricted because methods to activate metal nanoparticles without causing metal leaching were limited. We developed Rh nanoparticle catalysts (NCI-Rh) supported on nitrogen-doped carbon as a solid ligand to interact with metals for asymmetric insertion of carbenoids into N-H bonds cocatalyzed by chiral phosphoric acid. Nitrogen dopants played a crucial role in both catalytic activity and enantioselectivity while almost no catalysis was observed with Rh nanoparticles immobilized on supports without nitrogen dopants. Various types of chiral α-amino acid derivatives were synthesized in high yields with high enantioselectivities and NCI-Rh could be reused in seven runs. Furthermore, we demonstrated the corresponding continuous-flow reaction using a column packed with NCI-Rh. The desired product was obtained efficiently for over 90 h through the reactivation of NCI-Rh and the chiral source could be recovered.
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Affiliation(s)
- Ryusuke Masuda
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tomohiro Yasukawa
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yasuhiro Yamashita
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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14
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Recent developments of supported and magnetic nanocatalysts for organic transformations: an up-to-date review. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01888-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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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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16
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Scurti S, Monti E, Rodríguez-Aguado E, Caretti D, Cecilia JA, Dimitratos N. Effect of Polyvinyl Alcohol Ligands on Supported Gold Nano-Catalysts: Morphological and Kinetics Studies. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:879. [PMID: 33808449 PMCID: PMC8066135 DOI: 10.3390/nano11040879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 01/21/2023]
Abstract
The effect of polyvinyl alcohol (PVA) stabilizers and gold nanoparticles supported on active carbon (AuNPs/AC) was investigated in this article. Polymers with different molecular weights and hydrolysis degrees have been synthesized and used, like the stabilizing agent of Au nano-catalysts obtained by the sol-immobilization method. The reduction of 4-nitrophenol with NaBH4 has been used as a model reaction to investigate the catalytic activity of synthesized Au/AC catalysts. In addition, we report several characterization techniques such as ultraviolet-visible spectroscopy (UV-Vis), dynamic light scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) in order to correlate the properties of the polymer with the metal nanoparticle size and the catalytic activity. A volcano plot was observed linking the catalytic performance with hydrolysis degree and the maximum of the curve was identified at a value of 60%. The Au:PVA-60 weight ratio was changed in order to explain how the amount of the polymer can influence catalytic properties. The effect of nitroaromatic ring substituents on the catalytic mechanism was examined by the Hammett theory. Moreover, the reusability of the catalyst was investigated, with little to no decrease in activity observed over five catalytic cycles. Morphological and kinetic studies reported in this paper reveal the effect of the PVA polymeric stabilizer properties on the size and catalytic activity of supported gold nanoparticles.
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Affiliation(s)
- Stefano Scurti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Eleonora Monti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Elena Rodríguez-Aguado
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain; (E.R.-A.); (J.A.C.)
| | - Daniele Caretti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Juan Antonio Cecilia
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain; (E.R.-A.); (J.A.C.)
| | - Nikolaos Dimitratos
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
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17
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Kim M, Dygas M, Sobolev YI, Beker W, Zhuang Q, Klucznik T, Ahumada G, Ahumada JC, Grzybowski BA. On-Nanoparticle Gating Units Render an Ordinary Catalyst Substrate- and Site-Selective. J Am Chem Soc 2021; 143:1807-1815. [DOI: 10.1021/jacs.0c09408] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Minju Kim
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
| | - Miroslaw Dygas
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Yaroslav I. Sobolev
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
| | - Wiktor Beker
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Qiang Zhuang
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, China
| | - Tomasz Klucznik
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Guillermo Ahumada
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
| | - Juan Carlos Ahumada
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
| | - Bartosz A. Grzybowski
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
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18
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Peres L, Axet MR, Yi D, Serp P, Soulantica K. Selective hydrogenation of cinnamaldehyde by unsupported and few layer graphene supported platinum concave nanocubes exposing {110} facets stabilized by a long-chain amine. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Zhang L, Wei Z, Thanneeru S, Meng M, Kruzyk M, Ung G, Liu B, He J. A Polymer Solution To Prevent Nanoclustering and Improve the Selectivity of Metal Nanoparticles for Electrocatalytic CO
2
Reduction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909069] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lei Zhang
- Jiangsu Key Laboratory of New Power Batteries Collaborative Innovation Center of Biomedical Functional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | - Zichao Wei
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | | | - Michael Meng
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | - Megan Kruzyk
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | - Gaël Ung
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries Collaborative Innovation Center of Biomedical Functional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China
| | - Jie He
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
- Polymer Program Institute of Materials Science University of Connecticut Storrs CT 06269 USA
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20
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Zhang L, Wei Z, Thanneeru S, Meng M, Kruzyk M, Ung G, Liu B, He J. A Polymer Solution To Prevent Nanoclustering and Improve the Selectivity of Metal Nanoparticles for Electrocatalytic CO 2 Reduction. Angew Chem Int Ed Engl 2019; 58:15834-15840. [PMID: 31468668 DOI: 10.1002/anie.201909069] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 01/26/2023]
Abstract
The stability of metal nanocatalysts for electrocatalytic CO2 reduction is of key importance for practical application. We report the use of two polymeric N-heterocyclic carbenes (NHC) (polydentate and monodentate) to stabilize metal nanocatalysts (Au and Pd) for efficient CO2 electroreduction. Compared with other conventional ligands including thiols and amines, metal-carbene bonds that are stable under reductive potentials prevent the nanoclustering of nanoparticles. Au nanocatalysts modified by polymeric NHC ligands show an activity retention of 86 % after CO2 reduction at -0.9 V for 11 h, while it is less than 10 % for unmodified Au. We demonstrate that the hydrophobicity of polymer ligands and the enriched surface electron density of metal NPs through σ-donation of NHCs substantially improve the selectivity for CO2 reduction over proton.
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Affiliation(s)
- Lei Zhang
- Jiangsu Key Laboratory of New Power Batteries, Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.,Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Zichao Wei
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Srinivas Thanneeru
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Michael Meng
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Megan Kruzyk
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Gaël Ung
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269, USA.,Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA
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21
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Xu D, Lv H, Jin H, Liu Y, Ma Y, Han M, Bao J, Liu B. Crystalline Facet-Directed Generation Engineering of Ultrathin Platinum Nanodendrites. J Phys Chem Lett 2019; 10:663-671. [PMID: 30682888 DOI: 10.1021/acs.jpclett.8b03861] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we successfully prepare two-dimensional ultrathin single-crystalline platinum nanodendrites (PtNDs) with precisely controlled generation (size) through a surfactant-directed solution-phase synthesis. The amphiphilic surfactant of C22H45-N+(CH3)2CH2COOH (Br-) acts as the structure-directing template and facet-capping agent simultaneously to kinetically engineer in-the-plane epitaxial growth of Pt nanocrystals along selectively exposed {111} facets into ultrathin PtNDs. A novel formation mechanism defined as crystalline facet-directed step-by-step in-the-plane epitaxial growth, similar to the synthesis of organic dendrimers, is proposed on the basis of the nanostructure and crystalline evolution of PtNDs. The generation growth process is readily extended to precisely engineer the generation of PtNDs (from 0 to 25) and can also be utilized to grow other noble metal NDs (e.g., PdNDs and AuNDs) and core-shell Pt-Pd NDs. Because of the structural advantages, ultrathin PtNDs exhibit enhanced electrocatalytic performance toward hydrogen evolution reaction.
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Affiliation(s)
- Dongdong Xu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
| | - Hao Lv
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
| | - Haibao Jin
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Ying Liu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
| | - Yanhang Ma
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Min Han
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
| | - Jianchun Bao
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , Jiangsu 210023 , China
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22
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Peres L, Yi D, Bustos-Rodriguez S, Marcelot C, Pierrot A, Fazzini PF, Florea I, Arenal R, Lacroix LM, Warot-Fonrose B, Blon T, Soulantica K. Shape selection through epitaxy of supported platinum nanocrystals. NANOSCALE 2018; 10:22730-22736. [PMID: 30500037 DOI: 10.1039/c8nr07515h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Supported nanocrystals of original shapes are highly desirable for the development of optimized catalysts; however, conventional methods for the preparation of supported catalysts do not allow shape control. In this work, we have synthesized concave platinum nanocubes exposing {110} crystallographic facets at 20 °C. In the presence of a crystallographically oriented Pt(111) support in the reaction medium, the concave nanocubes grow epitaxially on the support, producing macroscopic nanostructured surfaces. Higher reaction temperature produces a mixture of different nanostructures in solution; however, only the nanostructures growing along the 111 direction are obtained on the Pt(111) support. Therefore, the oriented surface acts as a template for a selective immobilization of specific nanostructures out of a mixture, which can be regarded as an "epitaxial resolution" of an inhomogeneous mixture of nanocrystals. Thus, a judicious choice of the support crystallographic orientation may allow the isolation of original nanostructures that cannot be obtained in a pure form.
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Affiliation(s)
- Laurent Peres
- Laboratoire de Physique et Chimie des NanoObjets (LPCNO), Université de Toulouse, CNRS, INSA, UPS, 135 avenue de Rangueil, 31077 Toulouse, France.
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23
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Xu D, Lv H, Liu B. Encapsulation of Metal Nanoparticle Catalysts Within Mesoporous Zeolites and Their Enhanced Catalytic Performances: A Review. Front Chem 2018; 6:550. [PMID: 30474024 PMCID: PMC6238153 DOI: 10.3389/fchem.2018.00550] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/23/2018] [Indexed: 11/24/2022] Open
Abstract
Metal nanoparticles (NPs) exhibit desired activities in various catalytic reactions. However, the aggregation and sintering of metal NPs usually cause the loss of catalytic performance in practical reaction processes. Encapsulation of catalytically active metal NPs on/within a high-surface-area inorganic support partially resolve such concerns. Microporous zeolites, owing to their rigid frameworks and porous structural features, have been considered as one of ideal inorganic supports. Metal NPs can be easily encapsulated and stabilized within zeolitic frameworks to prevent unwished aggregation during the catalysis. Unfortunately, sole microporous nanochannels (generally <1 nm) in conventional zeolites are not easy to be accessed. The introduction of another set of nanochannel (e.g., mesopore), known as mesoporous zeolites, can greatly improve the mass-transfer efficiency, which is structurally beneficial for most catalytic reactions. The coexistence of micropores and mesopores in inorganic supports provides the synergetic advantages of both fine confinement effect for metal NPs and easy diffusion for organic reactants/intermediates/products. This review focuses on the recent advances in the design and synthesis of mesoporous zeolites-encapsulated metal NP catalysts as well as their desired catalytic performances (activity and stability) in organic reactions. We first discuss the advantages of mesoporous zeolites as the supports and present general strategies for the construction of mesoporous zeolites. Then, the preparation methods on how to encapsulate NP catalysts within both microporous and mesoporous zeolites are clearly demonstrated. Third, some recent important cases on catalytic applications are presented to verify structural advantages of mesoporous zeolite supports. Within the conclusion, the perspectives on future developments in metal NP catalysts encapsulated within mesoporous zeolites are lastly discussed.
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Affiliation(s)
| | | | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
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24
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Chang Z, Yang Y, He J, Rusling JF. Gold nanocatalysts supported on carbon for electrocatalytic oxidation of organic molecules including guanines in DNA. Dalton Trans 2018; 47:14139-14152. [PMID: 30066010 PMCID: PMC6191342 DOI: 10.1039/c8dt01966e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Gold (Au) is chemically stable and resistant to oxidation. Although bulk Au is catalytically inert, nanostructured Au exhibits unique size-dependent catalytic activity. When Au nanocatalysts are supported on conductive carbon (denoted as Au@C), Au@C becomes promising for a wide range of electrochemical reactions such as electrooxidation of alcohols and electroreduction of carbon dioxide. In this mini-review, we summarize Au@C nanocatalysts with specific attention on the most recent achievements including the findings in our own laboratories, and show that Au nanoclusters (AuNCs, <2 nm) on nitrided carbon are excellent electrocatalysts for the oxidation of organic molecules including guanines in DNA. The state-of-the-art synthesis and characterization of these nanomaterials are also documented. Synergistic interactions among Au-containing multicomponents on carbon supports and their applications in electrocatalysis are discussed as well. Finally, challenges and future outlook for these emerging and promising nanomaterials are envisaged.
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Affiliation(s)
- Zheng Chang
- Department of Applied Chemistry of College of Science, Xi’an University of Technology, Xi’an 710054, China
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Yue Yang
- Department of Chemical Engineering, Nanjing University of Science and Technology, Jiangsu 210094, China
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - James F. Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
- Department of Surgery and Neag Cancer Center, UConn Health, Farmington, CT 06032, USA
- School of Chemistry, National University of Ireland at Galway, Galway H91 TK33, Ireland
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25
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Nayak S, Pradhan AC, Parida KM. Topotactic Transformation of Solvated MgCr-LDH Nanosheets to Highly Efficient Porous MgO/MgCr 2O 4 Nanocomposite for Photocatalytic H 2 Evolution. Inorg Chem 2018; 57:8646-8661. [PMID: 29949363 DOI: 10.1021/acs.inorgchem.8b01517] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The hybrid structure of nanoparticles (NPs) with nanosheets has the advantage of both anisotropic properties of NPs and large specific surface areas of nanosheets, which is desirable for many technological applications. In this study, MgCr2O4 spinel NPs decorated on highly porous MgO nanosheets forming MgO/MgCr2 O4( x) nanocomposites were synthesized by a one pot coprecipitation method followed by a heat treatment process of the solvated wet gel of MgCr-LDH with polar solvent N, N-dimethylformamide (DMF) at 400 °C. This novel synthetic methodology generates materials consisting of porous metal oxides nanosheets adhered with spinel phase NPs due to the slow generation of gases such as H2O, CO2, and NH3 under moderate temperature during the heat treatment process. The synergistic effect of much wider band gap MgO nanosheets and narrow band gap MgCr2O4 NPs added increased stability due to the stronger bonding coordination of MgCr2O4 NPs with MgO nanosheets. The obtained MgO/MgCr2 O4( x) nanocomposites possess large specific surface areas, highly porous structure, and excellent interface between MgCr2O4 NPs and MgO nanosheets, which proved from N2 sorption isotherm, TEM, HR-TEM study. With metallic ratio of MgCr3:1, MgO/MgCr2O4(MgCr3:1) nanocomposites exhibit highest H2 evolution rate of 840 μmolg-12h-1, which was 2 times higher than that of pure MgCr2O4(420 μmolg-12h-1). The LSV measurement study of MgO/MgCr2O4 (MgCr3:1) nanocomposite shows an enhancement of light current density of 0.22 μA/cm2 at potential bias of -1.1 V. The Mott-Schottky analysis suggested the band edge positions of the n-type constituents and formation of n-n type heterojunctions in MgO/MgCr2O4 (MgCr3:1) nanocomposite, which facilitates the flow of charge carriers. The EIS and Bode phase plot of MgO/MgCr2O4 (MgCr3:1) nanocomposite signifies the lower interfacial charge transfer resistance and higher lifetime of electrons (2.7 ms) for enhanced H2 production. Lastly, the enhanced photocatalytic H2 production activity and long-term stability of MgO/MgCr2O4(MgCr3:1) could be attributed to maximum specific surface area, porous structure, close intimacy contact angle between two cubic phases of MgCr2O4 NPs and MgO nanosheets, abundant oxygen vacancies sites, reduced charge transfer resistance and suitable band edge potential to drive the thermodynamic energy for H2 production. This work highlighted an effective strategy for the synthesis of cost-effective 2D porous heterojunctions nanocomposite photocatalyst for promising applications in the field of clean H2 production utilizing abundant solar energy.
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Affiliation(s)
- Susanginee Nayak
- Centre for Nano Science and Nano Technology, Institute of Technical Education and Research , Siksha 'O' Anusandhan Deemed to be University , Bhubaneswar - 751030 , Odisha , India
| | - Amaresh C Pradhan
- UNAM-National Nanotechnology Research Center , Bilkent University , Ankara 06800 , Turkey
| | - K M Parida
- Centre for Nano Science and Nano Technology, Institute of Technical Education and Research , Siksha 'O' Anusandhan Deemed to be University , Bhubaneswar - 751030 , Odisha , India
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26
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Tambosco B, Segura K, Seyrig C, Cabrera D, Port M, Ferroud C, Amara Z. Outer-Sphere Effects in Visible-Light Photochemical Oxidations with Immobilized and Recyclable Ruthenium Bipyridyl Salts. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00890] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bryan Tambosco
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Kevin Segura
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Chloé Seyrig
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Damien Cabrera
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Marc Port
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Clotilde Ferroud
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
| | - Zacharias Amara
- Equipe de Chimie Moléculaire, EA 7341, Laboratoire de Chimie Moléculaire, Génie des Procédés Chimiques et Energétiques, Conservatoire National des Arts et Métiers, 2 rue Conté, Paris 75003, France
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27
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Yang Y, Jin L, Liu B, Kerns P, He J. Direct growth of ultrasmall bimetallic AuPd nanoparticles supported on nitrided carbon towards ethanol electrooxidation. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Fu P, Xiao Z, Liu Y, Wang L, Zhang X, Li G. Support-Independent Surface Functionalization for Efficient Pd Loading in Catalytic Hydrogenation. ChemistrySelect 2018. [DOI: 10.1002/slct.201800106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peng Fu
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Zhourong Xiao
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Yanhong Liu
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Li Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Guozhu Li
- Key Laboratory for Green Chemical Technology of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
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29
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Carja G, Gilea D, Cool P, Seftel EM. In Situ Synthesis of Bi2
O3
Nanoparticles on ZincMe (Me=Al or Cr) Layered Double Hydroxide Frameworks for Photocatalytic Oxygen Evolution from Water under Solar-Light Activation. ChemCatChem 2018. [DOI: 10.1002/cctc.201701749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriela Carja
- Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection; Technical University “Gh. Asachi” of Iasi; Bd. D. Mangeron 700554 Iasi Romania
| | - Diana Gilea
- Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection; Technical University “Gh. Asachi” of Iasi; Bd. D. Mangeron 700554 Iasi Romania
| | - Pegie Cool
- Department of Chemistry; University of Antwerpen (CDE); Universiteitsplein 1 2610 Wilrijk Antwerpen Belgium
| | - Elena M. Seftel
- Department of Chemistry; University of Antwerpen (CDE); Universiteitsplein 1 2610 Wilrijk Antwerpen Belgium
- Department of Sustainable Materials; VITO Flemish Institute for Technological Research; Boeretang 200 2400 Mol Belgium
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30
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Ernst JB, Schwermann C, Yokota GI, Tada M, Muratsugu S, Doltsinis NL, Glorius F. Molecular Adsorbates Switch on Heterogeneous Catalysis: Induction of Reactivity by N-Heterocyclic Carbenes. J Am Chem Soc 2017. [DOI: 10.1021/jacs.7b05112] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Johannes B. Ernst
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Christian Schwermann
- Institute
for Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
| | | | | | | | - Nikos L. Doltsinis
- Institute
for Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
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31
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Liu B, Jiang T, Zheng H, Dissanayke S, Song W, Federico A, Suib SL, He J. Nanoengineering of aggregation-free and thermally-stable gold nanoparticles in mesoporous frameworks. NANOSCALE 2017; 9:6380-6390. [PMID: 28452385 DOI: 10.1039/c7nr01988b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Loading catalytically active, aggregation-free and thermally stable metal nanoparticles (NPs) on a high surface area support represents a major interest in heterogeneous catalysis. Current synthetic approaches to these hybrid catalysts, however, still lack controllability in the thermal stability of metal NPs, particularly at high temperatures in the absence of organic ligands. We herein report a facile "co-assembly" methodology to prepare aggregation-free, ligand-free and thermally stable mesoporous hybrid nanocatalysts of metal-oxides and metal-carbons. Immobilization of catalytically active gold NPs (AuNPs) within high surface area mesoporous frameworks was achieved via the polymer-directed co-assembly of chemically and structurally equivalent Pluronic P-123 and poly(ethylene oxide)-modified metallic gold NPs (AuNP-PEO) as co-structure-directing-agents. The in situ immobilization of AuNPs partially embedded into periodically ordered mesoporous frameworks imposed a three-dimensional "nanoconfinement" effect and essentially enhanced the long-term thermal stability of AuNPs up to 800 °C. The mesoporous hybrids retained a high surface accessibility of AuNPs and they had a fantastic high-temperature catalytic durability (>130 h at 375 °C) confirmed by two model catalytic reactions, including aerobic oxidation of benzyl alcohol and CO oxidation, respectively. Our results may offer a new realm of possibilities for the rational applications of thermally stable nanocatalysts in renewable energy technology and high-temperature catalysis.
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Affiliation(s)
- Ben Liu
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
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