401
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Metin Ö, Can H, Şendil K, Gültekin MS. Monodisperse Ag/Pd core/shell nanoparticles assembled on reduced graphene oxide as highly efficient catalysts for the transfer hydrogenation of nitroarenes. J Colloid Interface Sci 2017; 498:378-386. [DOI: 10.1016/j.jcis.2017.03.066] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/11/2017] [Accepted: 03/14/2017] [Indexed: 11/28/2022]
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402
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Liu L, Ai Y, Li D, Qi L, Zhou J, Tang Z, Shao Z, Liang Q, Sun HB. Recyclable Acid-Base Bifunctional Core-Shell-Shell Nanosphere Catalyzed Synthesis of 5-Aryl-1H
-1,2,3-triazoles through the “One-Pot” Cyclization of Aldehydes, Nitromethane, and Sodium Azide. ChemCatChem 2017. [DOI: 10.1002/cctc.201700401] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lei Liu
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
| | - Yongjian Ai
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
- Department of Chemistry; Tsinghua University; Beijing 100084 P.R. China
| | - Dong Li
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
| | - Li Qi
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
| | - Junjie Zhou
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
| | - Zhike Tang
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
| | - Zixing Shao
- Department of Chemistry; Tsinghua University; Beijing 100084 P.R. China
| | - Qionglin Liang
- Department of Chemistry; Tsinghua University; Beijing 100084 P.R. China
| | - Hong-Bin Sun
- Department of Chemistry; Northeastern University; Shenyang 110819 P.R. China
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403
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Zhang M, Nowak M, Malo de Molina P, Abramovitch M, Santizo K, Mitragotri S, Helgeson ME. Synthesis of Oil-Laden Poly(ethylene glycol) Diacrylate Hydrogel Nanocapsules from Double Nanoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6116-6126. [PMID: 28605186 DOI: 10.1021/acs.langmuir.7b01162] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Multiple emulsions have received great interest due to their ability to be used as templates for the production of multicompartment particles for a variety of applications. However, scaling these complex droplets to nanoscale dimensions has been a challenge due to limitations on their fabrication methods. Here, we report the development of oil-in-water-in-oil (O1/W/O2) double nanoemulsions via a two-step high-energy method and their use as templates for complex nanogels comprised of inner oil droplets encapsulated within a hydrogel matrix. Using a combination of characterization methods, we determine how the properties of the nanogels are controlled by the size, stability, internal morphology, and chemical composition of the nanoemulsion templates from which they are formed. This allows for identification of compositional and emulsification parameters that can be used to optimize the size and oil encapsulation efficiency of the nanogels. Our templating method produces oil-laden nanogels with high oil encapsulation efficiencies and average diameters of 200-300 nm. In addition, we demonstrate the versatility of the system by varying the types of inner oil, the hydrogel chemistry, the amount of inner oil, and the hydrogel network cross-link density. These nontoxic oil-laden nanogels have potential applications in food, pharmaceutical, and cosmetic formulations.
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Affiliation(s)
- Mengwen Zhang
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Maksymilian Nowak
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Paula Malo de Molina
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Michael Abramovitch
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Katherine Santizo
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Samir Mitragotri
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
| | - Matthew E Helgeson
- Department of Chemical Engineering, University of California , Santa Barbara, California 93106, United States
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404
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Zhang YL, Shen WJ, Kuang WT, Guo S, Li YJ, Wang ZH. Serrated Au/Pd Core/Shell Nanowires with Jagged Edges for Boosting Liquid Fuel Electrooxidation. CHEMSUSCHEM 2017; 10:2375-2379. [PMID: 28466537 DOI: 10.1002/cssc.201700602] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 04/29/2017] [Indexed: 05/26/2023]
Abstract
Integration of 1D, core/shell, and jagged features into one entity may provide a promising avenue for further enhancing catalyst performance. However, designing such unique nanostructures is extremely challenging. Herein, 1D serrated Au/Pd core/shell nanowires (CSNWs) with jagged edges were produced simply by a one-pot, dual-capping-agent-assisted method involving co-reduction, galvanic replacement, directional coalescence of preformed nanoparticles, and site-selective epitaxial growth of Pd. Au/PdCSNWs, compared with the commercially available Pd/C, exhibited enhanced electrocatalytic performance towards liquid fuel oxidation because of the synergistic effect of the electronic structure and low-coordinated jagged edges.
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Affiliation(s)
- Yu-Ling Zhang
- State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Wen-Jin Shen
- State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Wen-Tao Kuang
- State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Shaojun Guo
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China
| | - Yong-Jun Li
- State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Ze-Hong Wang
- State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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405
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Martínez L, Mayoral A, Espiñeira M, Roman E, Palomares FJ, Huttel Y. Core@shell, Au@TiO x nanoparticles by gas phase synthesis. NANOSCALE 2017; 9:6463-6470. [PMID: 28466930 PMCID: PMC5509011 DOI: 10.1039/c7nr01148b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Herein, gas phase synthesis and characterization of multifunctional core@shell, Au@TiOx nanoparticles have been reported. The nanoparticles were produced via a one-step process using a multiple-ion cluster source under a controlled environment that guaranteed the purity of the nanoparticles. The growth of the Au cores (6 nm diameter) is stopped when they pass through the Ti plasma where they are covered by an ultra-thin (1 nm thick) and homogeneous titanium shell that is oxidized in-flight before the soft-landing of the nanoparticles. The Au cores were found to be highly crystalline with icosahedral (44%) and decahedral (66%) structures, whereas the shell, mainly composed of TiO2 (79%), was not ordered. The highly electrical insulating behaviour of the titanium oxide shell was confirmed by the charging effect produced during X-ray photoemission spectroscopy.
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Affiliation(s)
- L Martínez
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), C/Sor Juana Inés de la Cruz, 3, 28049 Madrid, Spain.
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406
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Zhu K, Jin C, Klencsár Z, Wang J. Fabrication of Yolk/Shell Partially Inverse Spinel Cobalt Ferrite/Mesoporous Silica Nanostructured Catalysts for Organic Pollutants Degradation by Peroxymonosulfate Activation. Catal Letters 2017. [DOI: 10.1007/s10562-017-2042-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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407
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ZnO@C (core@shell) microspheres derived from spent coffee grounds as applicable non-precious electrode material for DMFCs. Sci Rep 2017; 7:1738. [PMID: 28496121 PMCID: PMC5431908 DOI: 10.1038/s41598-017-01463-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/28/2017] [Indexed: 11/08/2022] Open
Abstract
Although numerous reports have introduced non precious electrocatalysts for methanol oxidation, most of those studies did not consider the corresponding high onset potential which restricts utilization in real fuel cells. In this study, an -90 mV [vs. Ag/AgCl] onset potential non-precious electrocatalyst is introduced as an applicable anode material for the direct methanol fuel cells. Moreover, the proposed material was prepared from a cheap and abundantly existing resource; the spent coffee grounds. Typically, the spent coffee grounds were facilely converted to core@shell (ZnO@C) microspheres through a two-step approach, involving chemical activation and a subsequent calcination at temperature of 700 °C. Activation of the carbon derived from the spent coffee grounds was performed with ZnCl2 which acts as pore-forming agent as well as a precursor for the ZnO. The structure and morphology were characterized by (XRD), (SEM), and (TEM) analyses while the electrochemical characterizations was evaluated by cyclic voltammetry (CV) technique. Besides the comparatively very low onset potential, the introduced microspheres exhibited relatively high current density; 17 mA/cm2. Overall, based on the advantages of the green source of carbon and the good electrocatalytic activity, the spent coffee grounds-derived carbon can be considered a promise anode material for the DMFCs.
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408
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Leistner K, Yang M, Damm C, Oswald S, Petr A, Kataev V, Nielsch K, Kavanagh KL. Aligned cuboid iron nanoparticles by epitaxial electrodeposition. NANOSCALE 2017; 9:5315-5322. [PMID: 28398446 DOI: 10.1039/c7nr00908a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aligned, individual iron square cuboid nanoparticles have been achieved by taking advantage of epitaxial, three-dimensional-island growth on GaAs(001) during electrodeposition at low deposition rates. The nanoparticles exhibit lateral dimensions between 10 and 80 nm and heights below 40 nm. Surface {100} facets predominate with a thin crystalline oxide shell that protects the nanoparticles during prolonged storage in air. The single crystallinity of the iron in combination with structural alignment leads to an in-plane magnetic anisotropy. These immobilized, oriented, and stable nanoparticles are promising for applications in nanoelectronic, sensor, and data storage technologies, as well as for the detailed analysis of the effect of shape and size on magnetism at the nanoscale.
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Affiliation(s)
- Karin Leistner
- IFW Dresden, P.O. Box: 270116, D-01171 Dresden, Germany.
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409
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Sun D, Ye L, Sun F, García H, Li Z. From Mixed-Metal MOFs to Carbon-Coated Core–Shell Metal Alloy@Metal Oxide Solid Solutions: Transformation of Co/Ni-MOF-74 to CoxNi1–x@CoyNi1–yO@C for the Oxygen Evolution Reaction. Inorg Chem 2017; 56:5203-5209. [DOI: 10.1021/acs.inorgchem.7b00333] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Dengrong Sun
- Research Institute of Photocatalysis, State Key Laboratory
of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, People’s Republic of China
| | - Lin Ye
- Research Institute of Photocatalysis, State Key Laboratory
of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, People’s Republic of China
| | - Fangxiang Sun
- Research Institute of Photocatalysis, State Key Laboratory
of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, People’s Republic of China
| | - Hermenegildo García
- Instituto de Tecnología Química, CSIV-UPV, Av. De los Naranjos s/n, Valencia 46022, Spain
| | - Zhaohui Li
- Research Institute of Photocatalysis, State Key Laboratory
of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, People’s Republic of China
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410
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Liu X, Astruc D. From Galvanic to Anti-Galvanic Synthesis of Bimetallic Nanoparticles and Applications in Catalysis, Sensing, and Materials Science. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605305. [PMID: 28128862 DOI: 10.1002/adma.201605305] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/01/2016] [Indexed: 05/28/2023]
Abstract
The properties of two alloyed metals have been known since the Bronze Age to outperform those of a single metal. How alloying and mixing metals applies to the nanoworld is now attracting considerable attention. The galvanic process, which is more than two centuries old and involves the reduction of a noble-metal cation by a less noble metal, has not only been used in technological processes, but also in the design of nanomaterials for the synthesis of bimetallic transition-metal nanoparticles. The background and nanoscience applications of the galvanic reactions (GRs) are reviewed here, in particular with emphasis on recent progress in bimetallic catalysis. Very recently, new reactions have been discovered with nanomaterials that contradict the galvanic principle, and these reactions, called anti-galvanic reactions (AGRs), are now attracting much interest for their mechanistic, synthetic, catalytic, and sensor aspects. The second part of the review deals with these AGRs and compares GRs and AGRs, including the intriguing AGRs mechanism and the first applications.
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Affiliation(s)
- Xiang Liu
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
- UMR 6226, Institut des Sciences Chimiques de Rennes, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Didier Astruc
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
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411
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Raccichini R, Varzi A, Wei D, Passerini S. Critical Insight into the Relentless Progression Toward Graphene and Graphene-Containing Materials for Lithium-Ion Battery Anodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603421. [PMID: 28032920 DOI: 10.1002/adma.201603421] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/11/2016] [Indexed: 06/06/2023]
Abstract
Used as a bare active material or component in hybrids, graphene has been the subject of numerous studies in recent years. Indeed, from the first report that appeared in late July 2008, almost 1600 papers were published as of the end 2015 that investigated the properties of graphene as an anode material for lithium-ion batteries. Although an impressive amount of data has been collected, a real advance in the field still seems to be missing. In this framework, attention is focused on the most prominent research efforts in this field with the aim of identifying the causes of such relentless progression through an insightful and critical evaluation of the lithium-ion storage performances (i.e., 1st cycle irreversible capacity, specific gravimetric and volumetric capacities, average delithiation voltage profile, rate capability and stability upon cycling). The "graphene fever" has certainly provided a number of fundamental studies unveiling the electrochemical properties of this "wonder" material. However, analysis of the published literature also highlights a loss of focus from the final application. Hype-driven claims, not fully appropriate metrics, and negligence of key parameters are probably some of the factors still hindering the application of graphene in commercial batteries.
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Affiliation(s)
- Rinaldo Raccichini
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Alberto Varzi
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Di Wei
- Nokia Technologies, Broers Building, 21 JJ Thomson Av., Madingley Road, CB3 0FA, Cambridge, UK
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
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412
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Antonin VS, Parreira LS, Aveiro LR, Silva FL, Valim RB, Hammer P, Lanza MR, Santos MC. W@Au Nanostructures Modifying Carbon as Materials for Hydrogen Peroxide Electrogeneration. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.192] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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413
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Kadam RG, Rathi AK, Cepe K, Zboril R, Varma RS, Gawande MB, Jayaram RV. Hexagonal Mesoporous Silica-Supported Copper Oxide (CuO/HMS) Catalyst: Synthesis of Primary Amides from Aldehydes in Aqueous Medium. Chempluschem 2017; 82:467-473. [PMID: 31962015 DOI: 10.1002/cplu.201600611] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/17/2017] [Indexed: 11/08/2022]
Abstract
Hexagonal mesoporous silica (HMS)-supported copper oxides (CuO/HMS) have been prepared by a sol-gel method and characterized by X-ray diffraction, FTIR spectroscopy, transmission electron microscopy, N2 sorption, inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), H2 temperature-programed reduction (TPR), NH3 temperature-programed desorption (TPD), and high-resolution (HR)-TEM techniques. An analysis of these results revealed a mesoporous material system with a high surface area (974 m2 g-1 ) and uniform pore-size distribution. The catalytic efficacy of CuO on the HMS support with varying Cu loadings (1, 3, 5, 10, and 15 wt %) was investigated for the transformation of aldehydes to primary amides; 3 wt % CuO/HMS exhibited good catalytic performance with good to excellent yields of amides (60-92 %) in benign aqueous medium. The intrinsically heterogeneous catalyst could be recovered after the reaction and reused without any noticeable loss in activity.
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Affiliation(s)
- Ravishankar G Kadam
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Anuj K Rathi
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Klara Cepe
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Manoj B Gawande
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Radha V Jayaram
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
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414
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Li X, Zeng Z, Hu B, Qian L, Hong X. Surface-Atom Dependence of ZnO-Supported Ag@Pd Core@Shell Nanocatalysts in CO2Hydrogenation to CH3OH. ChemCatChem 2017. [DOI: 10.1002/cctc.201601119] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xinliang Li
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan China
| | - Ziyan Zeng
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan China
| | - Bing Hu
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan China
| | - Lihua Qian
- School of Physics; Huazhong University of Science and Technology; Wuhan P.R. China
| | - Xinlin Hong
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan China
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415
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Tan SF, Bosman M, Nijhuis CA. Molecular Coatings for Stabilizing Silver and Gold Nanocubes under Electron Beam Irradiation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1189-1196. [PMID: 28068103 DOI: 10.1021/acs.langmuir.6b03721] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We study the degradation process of closely spaced silver and gold nanocubes under high-energy electron beam irradiation using transmission electron microscopy (TEM). The high aspect ratio gaps between silver and gold nanocubes degraded in many cases as a result of protrusion and filament formation during electron beam irradiation. We demonstrate that the molecular coating of the nanoparticles can act as a protective barrier to minimize electron-beam-induced damage on passivated gold and silver nanoparticles.
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Affiliation(s)
- Shu Fen Tan
- Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore
| | - Michel Bosman
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore 138634, Singapore
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, Singapore 117575, Singapore
| | - Christian A Nijhuis
- Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543, Singapore
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546, Singapore
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416
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Goswami A, Rathi AK, Aparicio C, Tomanec O, Petr M, Pocklanova R, Gawande MB, Varma RS, Zboril R. In Situ Generation of Pd-Pt Core-Shell Nanoparticles on Reduced Graphene Oxide (Pd@Pt/rGO) Using Microwaves: Applications in Dehalogenation Reactions and Reduction of Olefins. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2815-2824. [PMID: 28035800 DOI: 10.1021/acsami.6b13138] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Core-shell nanocatalysts are a distinctive class of nanomaterials with varied potential applications in view of their unique structure, composition-dependent physicochemical properties, and promising synergism among the individual components. A one-pot microwave (MW)-assisted approach is described to prepare the reduced graphene oxide (rGO)-supported Pd-Pt core-shell nanoparticles, (Pd@Pt/rGO); spherical core-shell nanomaterials (∼95 nm) with Pd core (∼80 nm) and 15 nm Pt shell were nicely distributed on the rGO matrix in view of the choice of reductant and reaction conditions. The well-characterized composite nanomaterials, endowed with synergism among its components and rGO support, served as catalysts in aromatic dehalogenation reactions and for the reduction of olefins with high yield (>98%), excellent selectivity (>98%) and recyclability (up to 5 times); both Pt/rGO and Pd/rGO and even their physical mixtures showed considerably lower conversions (20 and 57%) in dehalogenation of 3-bromoaniline. Similarly, in the reduction of styrene to ethylbenzene, Pd@Pt core-shell nanoparticles (without rGO support) possess considerably lower conversion (60%) compared to Pd@Pt/rGO. The mechanism of dehalogenation reactions with Pd@Pt/rGO catalyst is discussed with the explicit premise that rGO matrix facilitates the adsorption of the reducing agent, thus enhancing its local concentration and expediting the hydrazine decomposition rate. The versatility of the catalyst has been validated via diverse substrate scope for both reduction and dehalogenation reactions.
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Affiliation(s)
- Anandarup Goswami
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Anuj K Rathi
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Claudia Aparicio
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Ondrej Tomanec
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Martin Petr
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Radka Pocklanova
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Manoj B Gawande
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University , Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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417
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Ashley J, Shahbazi MA, Kant K, Chidambara VA, Wolff A, Bang DD, Sun Y. Molecularly imprinted polymers for sample preparation and biosensing in food analysis: Progress and perspectives. Biosens Bioelectron 2017; 91:606-615. [PMID: 28103516 DOI: 10.1016/j.bios.2017.01.018] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 12/01/2022]
Abstract
Molecularly imprinted polymers (MIPs) are biomimetics which can selectively bind to analytes of interest. One of the most interesting areas where MIPs have shown the biggest potential is food analysis. MIPs have found use as sorbents in sample preparation attributed to the high selectivity and high loading capacity. MIPs have been intensively employed in classical solid-phase extraction and solid-phase microextraction. More recently, MIPs have been combined with magnetic bead extraction, which greatly simplifies sample handling procedures. Studies have consistently shown that MIPs can effectively minimize complex food matrix effects, and improve recoveries and detection limits. In addition to sample preparation, MIPs have also been viewed as promising alternatives to bio-receptors due to the inherent molecular recognition abilities and the high stability in harsh chemical and physical conditions. MIPs have been utilized as receptors in biosensing platforms such as electrochemical, optical and mass biosensors to detect various analytes in food. In this review, we will discuss the current state-of-the-art of MIP synthesis and applications in the context of food analysis. We will highlight the imprinting methods which are applicable for imprinting food templates, summarize the recent progress in using MIPs for preparing and analysing food samples, and discuss the current limitations in the commercialisation of MIPs technology. Finally, future perspectives will be given.
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Affiliation(s)
- Jon Ashley
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Mohammad-Ali Shahbazi
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Krishna Kant
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Vinayaka Aaydha Chidambara
- Laboratory of Applied Micro and Nanotechnology (LAMINATE), National Food Institute, Technical University of Denmark (DTU-Food), Denmark
| | - Anders Wolff
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Dang Duong Bang
- Laboratory of Applied Micro and Nanotechnology (LAMINATE), National Food Institute, Technical University of Denmark (DTU-Food), Denmark
| | - Yi Sun
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark.
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418
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Kalz KF, Kraehnert R, Dvoyashkin M, Dittmeyer R, Gläser R, Krewer U, Reuter K, Grunwaldt J. Future Challenges in Heterogeneous Catalysis: Understanding Catalysts under Dynamic Reaction Conditions. ChemCatChem 2017; 9:17-29. [PMID: 28239429 PMCID: PMC5299475 DOI: 10.1002/cctc.201600996] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Indexed: 01/12/2023]
Abstract
In the future, (electro-)chemical catalysts will have to be more tolerant towards a varying supply of energy and raw materials. This is mainly due to the fluctuating nature of renewable energies. For example, power-to-chemical processes require a shift from steady-state operation towards operation under dynamic reaction conditions. This brings along a number of demands for the design of both catalysts and reactors, because it is well-known that the structure of catalysts is very dynamic. However, in-depth studies of catalysts and catalytic reactors under such transient conditions have only started recently. This requires studies and advances in the fields of 1) operando spectroscopy including time-resolved methods, 2) theory with predictive quality, 3) kinetic modelling, 4) design of catalysts by appropriate preparation concepts, and 5) novel/modular reactor designs. An intensive exchange between these scientific disciplines will enable a substantial gain of fundamental knowledge which is urgently required. This concept article highlights recent developments, challenges, and future directions for understanding catalysts under dynamic reaction conditions.
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Affiliation(s)
- Kai F. Kalz
- Institute of Catalysis Research and Technology (IKFT)Karlsruhe Institute of Technology (KIT)D-76344Eggenstein-LeopoldshafenGermany
| | - Ralph Kraehnert
- Department of ChemistryTechnische Universität BerlinD-10623BerlinGermany
| | - Muslim Dvoyashkin
- Institute of Chemical TechnologyUniversität LeipzigD-04103LeipzigGermany
| | - Roland Dittmeyer
- Institute for Micro Process Engineering (IMVT)Karlsruhe Institute of Technology (KIT)D-76344Eggenstein-LeopoldshafenGermany
| | - Roger Gläser
- Institute of Chemical TechnologyUniversität LeipzigD-04103LeipzigGermany
| | - Ulrike Krewer
- Institute of Energy and Process Systems EngineeringTU BraunschweigD-38106BraunschweigGermany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research CenterTechnische Universität MünchenD-85747GarchingGermany
| | - Jan‐Dierk Grunwaldt
- Institute of Catalysis Research and Technology (IKFT)Karlsruhe Institute of Technology (KIT)D-76344Eggenstein-LeopoldshafenGermany
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of Technology (KIT)D-76131KarlsruheGermany
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419
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Ma DD, Ding D, Huang JJ, Zhang H, Zheng YP, Chen MS, Wan HL. Promoting Effect of Bismuth Oxide on Palladium for Low-Temperature Carbon Monoxide Oxidation. ChemCatChem 2017. [DOI: 10.1002/cctc.201601181] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dong-Dong Ma
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Ding Ding
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Jun-Jie Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Hong Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Yan-Ping Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Ming-Shu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
| | - Hui-Lin Wan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering, Xiamen University; Xiamen 361005 Fujian China
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420
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Londoño-Calderon A, Ponce A, Santiago U, Mejia S, José-Yacamán M. Controlling the Number of Atoms on Catalytic Metallic Clusters. STUDIES IN SURFACE SCIENCE AND CATALYSIS 2017. [DOI: 10.1016/b978-0-12-805090-3.00006-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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421
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Huang S, Zhang W, Cui S, Chen W, Mi L. Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00047b] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A hierarchical Ni@Ni3S2/Co9S8/NiSe composite through sequential partial ion exchange for supercapacitor design.
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Affiliation(s)
- Shaobo Huang
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P.R. China
| | - Wangxi Zhang
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P.R. China
| | - Shizhong Cui
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P.R. China
| | - Weihua Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R
- China
| | - Liwei Mi
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P.R. China
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422
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Miao Z, Shu X, Ramella D. Synthesis of a Fe3O4@P4VP@metal–organic framework core–shell structure and studies of its aerobic oxidation reactivity. RSC Adv 2017. [DOI: 10.1039/c6ra25820d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A novel core–shell magnetic Fe3O4@P4VP@MIL-100(Fe) composite material has been synthesized and its aerobic oxidation activity has been extensively studied.
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Affiliation(s)
| | - Xin Shu
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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423
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Zhu YF, Zhao N, Jin B, Zhao M, Jiang Q. High thermal stability of core–shell structures dominated by negative interface energy. Phys Chem Chem Phys 2017; 19:9253-9260. [DOI: 10.1039/c6cp08061h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Superheating of the low-Tm(∞)-core is induced by the negative interface energy, improving thermal expansion, atomic diffusion and heat capacity accordingly.
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Affiliation(s)
- Yong-Fu Zhu
- Key Laboratory of Automobile Materials
- Ministry of Education, and School of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
| | - Ning Zhao
- Key Laboratory of Automobile Materials
- Ministry of Education, and School of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
| | - Bo Jin
- Key Laboratory of Automobile Materials
- Ministry of Education, and School of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
| | - Ming Zhao
- Key Laboratory of Automobile Materials
- Ministry of Education, and School of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
| | - Qing Jiang
- Key Laboratory of Automobile Materials
- Ministry of Education, and School of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
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424
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Li Y, Yang CX, Yan XP. Controllable preparation of core–shell magnetic covalent-organic framework nanospheres for efficient adsorption and removal of bisphenols in aqueous solution. Chem Commun (Camb) 2017; 53:2511-2514. [DOI: 10.1039/c6cc10188g] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A monomer-mediated in situ growth strategy has been developed for the controllable fabrication of magnetic COF core–shell nanostructures with great potential for wide applications.
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Affiliation(s)
- Yang Li
- College of Chemistry
- Research Center for Analytical Science
- Tianjin Key Laboratory of Molecular Recognition and Biosensing
- State Key Laboratory of Medicinal Chemical Biology
- Nankai University
| | - Cheng-Xiong Yang
- College of Chemistry
- Research Center for Analytical Science
- Tianjin Key Laboratory of Molecular Recognition and Biosensing
- State Key Laboratory of Medicinal Chemical Biology
- Nankai University
| | - Xiu-Ping Yan
- College of Chemistry
- Research Center for Analytical Science
- Tianjin Key Laboratory of Molecular Recognition and Biosensing
- State Key Laboratory of Medicinal Chemical Biology
- Nankai University
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425
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Fabrication of Hollow Core-Shell Type Si/C Nanocomposites by a Simple Process. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2017. [DOI: 10.1380/ejssnt.2017.69] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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426
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Li R, Zhao J, Yang F, Zhang Y, Ramella D, Peng Y, Luan Y. An Fe3O4@P4VP@FeCl3 core–shell heterogeneous catalyst for aerobic oxidation of alcohols and benzylic oxidation reaction. RSC Adv 2017. [DOI: 10.1039/c7ra09005f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A novel Fe3O4@P4VP@FeCl3 core–shell catalyst has been developed through coordination interaction between P4VP and FeCl3, which was utilized in selective oxidation of alcohols using molecular oxygen as the oxidant.
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Affiliation(s)
- Ruilian Li
- Hunan Agricultural University
- P. R. China
| | - Jian Zhao
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Fengxia Yang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Yingchao Zhang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | | | - Yu Peng
- Hunan Agricultural University
- P. R. China
| | - Yi Luan
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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427
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Zhai P, Chen PP, Xie J, Liu JX, Zhao H, Lin L, Zhao B, Su HY, Zhu Q, Li WX, Ma D. Carbon induced selective regulation of cobalt-based Fischer–Tropsch catalysts by ethylene treatment. Faraday Discuss 2017; 197:207-224. [DOI: 10.1039/c6fd00194g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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428
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Wu KL, Cai YM, Jiang BB, Cheong WC, Wei XW, Wang W, Yu N. Cu@Ni core–shell nanoparticles/reduced graphene oxide nanocomposites for nonenzymatic glucose sensor. RSC Adv 2017. [DOI: 10.1039/c7ra00910k] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Cu@Ni core–shell nanoparticle decorated reduced graphene oxide nanocomposites are prepared and further employed as a novel sensing material for fabricating a sensitive nonenzymatic glucose sensor with excellent performance for glucose.
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Affiliation(s)
- Kong-Lin Wu
- College of Chemistry and Materials Science
- Key Laboratory of Functional Molecular Solids
- The Ministry of Education
- Anhui Laboratory of Molecule-based Materials (State Key Laboratory Cultivation Base)
- Anhui Key Laboratory of Functional Molecular Solids
| | - Ya-Miao Cai
- College of Chemistry and Materials Science
- Key Laboratory of Functional Molecular Solids
- The Ministry of Education
- Anhui Laboratory of Molecule-based Materials (State Key Laboratory Cultivation Base)
- Anhui Key Laboratory of Functional Molecular Solids
| | - Bin-Bin Jiang
- School of Chemical and Engineering
- Anhui University of Technology
- Maanshan 243002
- China
| | | | - Xian-Wen Wei
- College of Chemistry and Materials Science
- Key Laboratory of Functional Molecular Solids
- The Ministry of Education
- Anhui Laboratory of Molecule-based Materials (State Key Laboratory Cultivation Base)
- Anhui Key Laboratory of Functional Molecular Solids
| | - Weizhi Wang
- College of Chemistry and Materials Science
- Key Laboratory of Functional Molecular Solids
- The Ministry of Education
- Anhui Laboratory of Molecule-based Materials (State Key Laboratory Cultivation Base)
- Anhui Key Laboratory of Functional Molecular Solids
| | - Nan Yu
- College of Chemistry and Materials Science
- Key Laboratory of Functional Molecular Solids
- The Ministry of Education
- Anhui Laboratory of Molecule-based Materials (State Key Laboratory Cultivation Base)
- Anhui Key Laboratory of Functional Molecular Solids
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429
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Xu H, Feng JX, Tong YX, Li GR. Cu2O–Cu Hybrid Foams as High-Performance Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02911] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Han Xu
- MOE Laboratory of Bioinorganic
and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy
Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Jin-Xian Feng
- MOE Laboratory of Bioinorganic
and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy
Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Ye-Xiang Tong
- MOE Laboratory of Bioinorganic
and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy
Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Gao-Ren Li
- MOE Laboratory of Bioinorganic
and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy
Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
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430
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Taher A, Yoo HY, Oh PI, Moon S, Jin MJ. Microwave-accelerated Suzuki Coupling Reaction Catalyzed by Heterogeneous NHC-Pd. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.11018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Abu Taher
- Department of Chemistry and Chemical Engineering; Inha University; Incheon 402-751 Korea
| | - Hye-Young Yoo
- Department of Chemistry and Chemical Engineering; Inha University; Incheon 402-751 Korea
| | - Phil-In Oh
- Department of Chemistry and Chemical Engineering; Inha University; Incheon 402-751 Korea
| | - Sanggon Moon
- Department of Chemistry and Chemical Engineering; Inha University; Incheon 402-751 Korea
| | - Myung-Jong Jin
- Department of Chemistry and Chemical Engineering; Inha University; Incheon 402-751 Korea
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431
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Sousa F, Sanavio B, Saccani A, Tang Y, Zucca I, Carney TM, Mastropietro A, Jacob Silva PH, Carney RP, Schenk K, Omrani AO, Huang P, Yang L, Rønnow HM, Stellacci F, Krol S. Superparamagnetic Nanoparticles as High Efficiency Magnetic Resonance Imaging T2 Contrast Agent. Bioconjug Chem 2016; 28:161-170. [DOI: 10.1021/acs.bioconjchem.6b00577] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fernanda Sousa
- Nanomedicine
Laboratory, Fondazione IRCCS Istituto Neurologico Carlo Besta, AMADEOLAB, Via G.A. Amadeo 42, 20133 Milan, Italy
- IFOM The FIRC Institute of Molecular Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Barbara Sanavio
- Nanomedicine
Laboratory, Fondazione IRCCS Istituto Neurologico Carlo Besta, AMADEOLAB, Via G.A. Amadeo 42, 20133 Milan, Italy
| | - Alessandra Saccani
- Nanomedicine
Laboratory, Fondazione IRCCS Istituto Neurologico Carlo Besta, AMADEOLAB, Via G.A. Amadeo 42, 20133 Milan, Italy
| | - Yun Tang
- Institute
of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
- Department
of Chemistry, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Ileana Zucca
- Laboratory
of Experimental Imaging, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy
| | - Tamara M. Carney
- Institute
of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Alfonso Mastropietro
- Laboratory
of Experimental Imaging, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy
| | - Paulo H. Jacob Silva
- Institute
of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Randy P. Carney
- Institute
of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Kurt Schenk
- Laboratory
of X-ray Diffraction, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Arash O. Omrani
- Laboratory
for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Ping Huang
- Laboratory
for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Lin Yang
- Laboratory
for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Henrik M. Rønnow
- Laboratory
for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Francesco Stellacci
- Institute
of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Silke Krol
- Nanomedicine
Laboratory, Fondazione IRCCS Istituto Neurologico Carlo Besta, AMADEOLAB, Via G.A. Amadeo 42, 20133 Milan, Italy
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432
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Kisukuri CM, Reis JLMS, Rodrigues TS, Camargo PHC, Andrade LH. Evaluation of AgPd Nanoshells in Dual Catalysis: One-Pot Silane Oxidation and Reduction of Organic Compounds. ChemCatChem 2016. [DOI: 10.1002/cctc.201600977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Camila M. Kisukuri
- Department of Fundamental Chemistry, Institute of Chemistry; University of São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo SP Brazil
| | - João L. M. S. Reis
- Department of Fundamental Chemistry, Institute of Chemistry; University of São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo SP Brazil
| | - Thenner S. Rodrigues
- Department of Fundamental Chemistry, Institute of Chemistry; University of São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo SP Brazil
| | - Pedro H. C. Camargo
- Department of Fundamental Chemistry, Institute of Chemistry; University of São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo SP Brazil
| | - Leandro H. Andrade
- Department of Fundamental Chemistry, Institute of Chemistry; University of São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo SP Brazil
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433
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Musa MS, Milani AH, Shaw P, Simpson G, Lovell PA, Eaves E, Hodson N, Saunders BR. Tuning the modulus of nanostructured ionomer films of core-shell nanoparticles based on poly(n-butyl acrylate). SOFT MATTER 2016; 12:8112-8123. [PMID: 27722747 DOI: 10.1039/c6sm01563h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study we investigate the structure-mechanical property relationships for nanostructured ionomer films containing ionically crosslinked core-shell polymer nanoparticles based on poly(n-butyl acrylate) (PBA). Whilst nanostructured ionomer films of core-shell nanoparticles have been previously shown to have good ductility [Soft Matter, 2014, 10, 4725], the modulus values were modest. Here, we used BA as the primary monomer to construct core-shell nanoparticles that provided films containing nanostructured polymers with much higher glass transition temperature (Tg) values. The core-shell nanoparticles were synthesised using BA, acrylonitrile (AN), methacrylic acid (MAA) and 1,4-butanediol diacrylate (BDDA). Nanostructured ionomer films were prepared by casting aqueous core-shell nanoparticle dispersions in which the shell -COOH groups were neutralised with KOH and ZnO. The film mechanical properties were studied using dynamic mechanical analysis and tensile stress-strain measurements. The use of BA-based nanoparticles increased the Tg values to close to room temperature which caused a strong dependence of the film mechanical properties on the AN content and extent of neutralisation of the -COOH groups. The Young's modulus values for the films ranged from 1.0 to 86.0 MPa. The latter is the highest modulus reported for cast films of nanostructured ionomer films prepared from core-shell nanoparticles. The films had good ductility with strain-at-break values of at least 200%. The mechanical properties of the films were successfully modelled using the isostrain model. From comparison with an earlier butadiene-based system this study demonstrates that the nature of the primary monomer used to construct the nanoparticles can profoundly change the film mechanical properties. The aqueous nanoparticle dispersion approach used here provides a simple and versatile method to prepare high modulus elastomer films with tuneable mechanical properties.
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Affiliation(s)
- Muhamad S Musa
- Polymer Science and Technology Group, MSS Tower, School of Materials, The University of Manchester, Manchester, M13 9PL, UK.
| | - Amir H Milani
- Polymer Science and Technology Group, MSS Tower, School of Materials, The University of Manchester, Manchester, M13 9PL, UK.
| | - Peter Shaw
- Synthomer (UK) Ltd, Temple Fields, Harlow, Essex CM20 2BH, UK
| | - Gareth Simpson
- Synthomer (UK) Ltd, Temple Fields, Harlow, Essex CM20 2BH, UK
| | - Peter A Lovell
- Polymer Science and Technology Group, MSS Tower, School of Materials, The University of Manchester, Manchester, M13 9PL, UK.
| | - Elizabeth Eaves
- Polymer Science and Technology Group, MSS Tower, School of Materials, The University of Manchester, Manchester, M13 9PL, UK.
| | - Nigel Hodson
- BioAFM Facility, Stopford Building, The University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Brian R Saunders
- Polymer Science and Technology Group, MSS Tower, School of Materials, The University of Manchester, Manchester, M13 9PL, UK.
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434
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Gao L, Fu Q, Wei M, Zhu Y, Liu Q, Crumlin E, Liu Z, Bao X. Enhanced Nickel-Catalyzed Methanation Confined under Hexagonal Boron Nitride Shells. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02188] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lijun Gao
- Department
of Chemical Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
- State
Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Qiang Fu
- State
Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Mingming Wei
- State
Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Yifeng Zhu
- State
Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Qiang Liu
- State
Key Laboratory of Functional Materials for Informatics, Shanghai Institute
of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, People’s Republic of China
| | - Ethan Crumlin
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Zhi Liu
- State
Key Laboratory of Functional Materials for Informatics, Shanghai Institute
of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China
- School
of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, People’s Republic of China
| | - Xinhe Bao
- State
Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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435
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436
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Guskos N, Żołnierkiewicz G, Typek J, Guskos A, Adamski P, Moszyński D. Structure and magnetic properties of chromium doped cobalt molybdenum nitrides. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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437
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Ohyama J, Ishikawa H, Mahara Y, Nishiyama T, Satsuma A. Formation of Ru Shell on Co/Al2O3by Galvanic Deposition Method and Its High Catalytic Performance for Three-Way Conversion. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160102] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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438
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Marusak KE, Feng Y, Eben CF, Payne ST, Cao Y, You L, Zauscher S. Cadmium sulphide quantum dots with tunable electronic properties by bacterial precipitation. RSC Adv 2016; 6:76158-76166. [PMID: 28435671 DOI: 10.1039/c6ra13835g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present a new method to fabricate semiconducting, transition metal nanoparticles (NPs) with tunable bandgap energies using engineered Escherichia coli. These bacteria overexpress the Treponema denticola cysteine desulfhydrase gene to facilitate precipitation of cadmium sulphide (CdS) NPs. Analysis with transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy reveal that the bacterially precipitated NPs are agglomerates of mostly quantum dots, with diameters that can range from 3 to 15 nm, embedded in a carbon-rich matrix. Additionally, conditions for bacterial CdS precipitation can be tuned to produce NPs with bandgap energies that range from quantum-confined to bulk CdS. Furthermore, inducing precipitation at different stages of bacterial growth allows for control over whether the precipitation occurs intra- or extracellularly. This control can be critically important in utilizing bacterial precipitation for the environmentally-friendly fabrication of functional, electronic and catalytic materials. Notably, the measured photoelectrochemical current generated by these NPs is comparable to values reported in the literature and higher than that of synthesized chemical bath deposited CdS NPs. This suggests that bacterially precipitated CdS NPs have potential for applications ranging from photovoltaics to photocatalysis in hydrogen evolution.
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Affiliation(s)
- K E Marusak
- Department of Mechanical Engineering & Materials Science, 144 Hudson Hall, Box 90300 Durham, NC 27708, United States
| | - Y Feng
- Department of Mechanical Engineering & Materials Science, 144 Hudson Hall, Box 90300 Durham, NC 27708, United States
| | - C F Eben
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Durham NC 27708, United States
| | - S T Payne
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Durham NC 27708, United States
| | - Y Cao
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Durham NC 27708, United States
| | - L You
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Durham NC 27708, United States
| | - S Zauscher
- Department of Mechanical Engineering & Materials Science, 144 Hudson Hall, Box 90300 Durham, NC 27708, United States
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439
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Design of a core–shell Pt–SiO2 catalyst in a reverse microemulsion system: Distinctive kinetics on CO oxidation at low temperature. J Catal 2016. [DOI: 10.1016/j.jcat.2016.06.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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440
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Gorsd M, Sathicq G, Romanelli G, Pizzio L, Blanco M. Tungstophosphoric acid supported on core-shell polystyrene-silica microspheres or hollow silica spheres catalyzed trisubstituted imidazole synthesis by multicomponent reaction. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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441
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Ortega-Amaya R, Matsumoto Y, Espinoza-Rivas AM, Pérez-Guzmán MA, Ortega-López M. Development of highly faceted reduced graphene oxide-coated copper oxide and copper nanoparticles on a copper foil surface. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1010-1017. [PMID: 27547618 PMCID: PMC4979746 DOI: 10.3762/bjnano.7.93] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 06/17/2016] [Indexed: 05/29/2023]
Abstract
This work describes the formation of reduced graphene oxide-coated copper oxide and copper nanoparticles (rGO-Cu2ONPs, rGO-CuNPs) on the surface of a copper foil supporting graphene oxide (GO) at annealing temperatures of 200-1000 °C, under an Ar atmosphere. These hybrid nanostructures were developed from bare copper oxide nanoparticles which grew at an annealing temperature of 80 °C under nitrogen flux. The predominant phase as well as the particle size and shape strongly depend on the process temperature. Characterization with transmission electron microscopy and scanning electron microscopy indicates that Cu or Cu2O nanoparticles take rGO sheets from the rGO network to form core-shell Cu-rGO or Cu2O-rGO nanostructures. It is noted that such ones increase in size from 5 to 800 nm as the annealing temperature increases in the 200-1000 °C range. At 1000 °C, Cu nanoparticles develop a highly faceted morphology, displaying arm-like carbon nanorods that originate from different facets of the copper crystal structure.
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Affiliation(s)
- Rebeca Ortega-Amaya
- SEES, Electrical Engineering Department, Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Yasuhiro Matsumoto
- SEES, Electrical Engineering Department, Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
- Nanoscience and Nanotechnology Program. Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Andrés M Espinoza-Rivas
- SEES, Electrical Engineering Department, Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Manuel A Pérez-Guzmán
- Nanoscience and Nanotechnology Program. Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Mauricio Ortega-López
- SEES, Electrical Engineering Department, Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
- Nanoscience and Nanotechnology Program. Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, Col. San Pedro Zacatenco, Mexico City 07360, Mexico
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442
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Etayo P, Ayats C, Pericàs MA. Synthesis and catalytic applications of C3-symmetric tris(triazolyl)methanol ligands and derivatives. Chem Commun (Camb) 2016; 52:1997-2010. [PMID: 26701737 DOI: 10.1039/c5cc08961a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Recently introduced tris(1,2,3-triazol-4-yl)methanols and derivatives (TTM ligands) have become a valuable subclass of C3-symmetric tripodal ligands for transition metal-mediated reactions. TTM-based ligand architectures are modularly constructed through regioselective, one-pot triple [3+2] cycloaddition of azides and alkynes. Applications of homogeneous systems of this type and of heterogenised (polystyrene- and magnetic nanoparticle-supported) TTM ligands in synthesis and catalysis are compiled in this Feature Article.
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Affiliation(s)
- Pablo Etayo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avgda. Països Catalans 16, E-43007 Tarragona, Spain.
| | - Carles Ayats
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avgda. Països Catalans 16, E-43007 Tarragona, Spain.
| | - Miquel A Pericàs
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avgda. Països Catalans 16, E-43007 Tarragona, Spain. and Departament de Química Orgànica, Universitat de Barcelona, 08028 Barcelona, Spain
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443
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Liu S, Regulacio MD, Tee SY, Khin YW, Teng CP, Koh LD, Guan G, Han MY. Preparation, Functionality, and Application of Metal Oxide-coated Noble Metal Nanoparticles. CHEM REC 2016; 16:1965-90. [DOI: 10.1002/tcr.201600028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Shuhua Liu
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Michelle D. Regulacio
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Si Yin Tee
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Yin Win Khin
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Choon Peng Teng
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Leng Duei Koh
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Guijian Guan
- Institute of Intelligent Machines Chinese Academy of Sciences; Hefei 230031 P. R. China
| | - Ming-Yong Han
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
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444
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Rather RA, Singh S, Pal B. Core–shell morphology of Au-TiO 2 @graphene oxide nanocomposite exhibiting enhanced hydrogen production from water. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.03.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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445
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Tan SF, Chee SW, Lin G, Bosman M, Lin M, Mirsaidov U, Nijhuis CA. Real-Time Imaging of the Formation of Au-Ag Core-Shell Nanoparticles. J Am Chem Soc 2016; 138:5190-3. [PMID: 27043921 DOI: 10.1021/jacs.6b00594] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We study the overgrowth process of silver-on-gold nanocubes in dilute, aqueous silver nitrate solution in the presence of a reducing agent, ascorbic acid, using in situ liquid-cell electron microscopy. Au-Ag core-shell nanostructures were formed via two mechanistic pathways: (1) nuclei coalescence, where the Ag nanoparticles absorbed onto the Au nanocubes, and (2) monomer attachment, where the Ag atoms epitaxially deposited onto the Au nanocubes. Both pathways lead to the same Au-Ag core-shell nanostructures. Analysis of the Ag deposition rate reveals the growth modes of this process and shows that this reaction is chemically mediated by the reducing agent.
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Affiliation(s)
- Shu Fen Tan
- Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543
| | - See Wee Chee
- Centre for Bioimaging Sciences and Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543.,Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore , 117551.,NUSNNI-Nanocore, National University of Singapore , 5A Engineering Drive 1, Singapore , 117411.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546
| | - Guanhua Lin
- Centre for Bioimaging Sciences and Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543.,Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore , 117551.,NUSNNI-Nanocore, National University of Singapore , 5A Engineering Drive 1, Singapore , 117411.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546
| | - Michel Bosman
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research) , 2 Fusionopolis Way, Singapore 138634.,Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, Singapore 117575
| | - Ming Lin
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research) , 2 Fusionopolis Way, Singapore 138634
| | - Utkur Mirsaidov
- Centre for Bioimaging Sciences and Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543.,Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore , 117551.,NUSNNI-Nanocore, National University of Singapore , 5A Engineering Drive 1, Singapore , 117411.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546
| | - Christian A Nijhuis
- Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , 6 Science Drive 2, Singapore 117546
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446
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Bonaiuto E, Magro M, Baratella D, Jakubec P, Sconcerle E, Terzo M, Miotto G, Macone A, Agostinelli E, Fasolato S, Venerando R, Salviulo G, Malina O, Zboril R, Vianello F. Ternary Hybrid γ-Fe2O3/CrVI/Amine Oxidase Nanostructure for Electrochemical Sensing: Application for Polyamine Detection in Tumor Tissue. Chemistry 2016; 22:6846-52. [DOI: 10.1002/chem.201600156] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Emanuela Bonaiuto
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
| | - Massimiliano Magro
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
- Regional Centre of Advanced Technologies and Materials; Palacky University; Olomouc Czech Republic
| | - Davide Baratella
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
| | - Petr Jakubec
- Regional Centre of Advanced Technologies and Materials; Palacky University; Olomouc Czech Republic
| | - Elisabetta Sconcerle
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
| | - Milo Terzo
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
| | - Giovanni Miotto
- Department of Molecular Medicine; University of Padua; Italy
- Proteomic Center of Padova University; VIMM and Padova University Hospital; Padua Italy
| | - Alberto Macone
- Department of Biochemical Sciences “A. Rossi Fanelli”; University of Rome “La Sapienza”; Rome Italy
| | - Enzo Agostinelli
- Department of Biochemical Sciences “A. Rossi Fanelli”; University of Rome “La Sapienza”; Rome Italy
- CNR, Institute of Molecular Biology and Pathology; Rome Italy
| | - Silvano Fasolato
- Unit of Hepatic Emergencies and Liver Transplantation; Department of Medicine; University of Padua; Padua Italy
| | - Rina Venerando
- Department of Molecular Medicine; University of Padua; Italy
| | | | - Ondrej Malina
- Regional Centre of Advanced Technologies and Materials; Palacky University; Olomouc Czech Republic
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials; Palacky University; Olomouc Czech Republic
| | - Fabio Vianello
- Department of Comparative Biomedicine and Food Science; University of Padua; Agripolis-Viale dell'Università 16 Legnaro 35020 (PD) Italy
- Regional Centre of Advanced Technologies and Materials; Palacky University; Olomouc Czech Republic
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447
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Yue Z, Cai B, Wang L, Wang X, Gu M. Intrinsically core-shell plasmonic dielectric nanostructures with ultrahigh refractive index. SCIENCE ADVANCES 2016; 2:e1501536. [PMID: 27051869 PMCID: PMC4820380 DOI: 10.1126/sciadv.1501536] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
Topological insulators are a new class of quantum materials with metallic (edge) surface states and insulating bulk states. They demonstrate a variety of novel electronic and optical properties, which make them highly promising electronic, spintronic, and optoelectronic materials. We report on a novel conic plasmonic nanostructure that is made of bulk-insulating topological insulators and has an intrinsic core-shell formation. The insulating (dielectric) core of the nanocone displays an ultrahigh refractive index of up to 5.5 in the near-infrared frequency range. On the metallic shell, plasmonic response and strong backward light scattering were observed in the visible frequency range. Through integrating the nanocone arrays into a-Si thin film solar cells, up to 15% enhancement of light absorption was predicted in the ultraviolet and visible ranges. With these unique features, the intrinsically core-shell plasmonic nanostructure paves a new way for designing low-loss and high-performance visible to infrared optical devices.
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Affiliation(s)
- Zengji Yue
- Centre for Micro-Photonics and CUDOS (Centre for Ultrahigh bandwidth Devices for Optical Systems), Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Boyuan Cai
- Centre for Micro-Photonics and CUDOS (Centre for Ultrahigh bandwidth Devices for Optical Systems), Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Lan Wang
- School of Applied Sciences, RMIT University, Melbourne, Victoria 3001, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Min Gu
- Centre for Micro-Photonics and CUDOS (Centre for Ultrahigh bandwidth Devices for Optical Systems), Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Artificial-Intelligence Nanophotonics Laboratory, School of Science, RMIT University, Melbourne, Victoria 3001, Australia
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448
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Sun X, Li D, Guo S, Zhu W, Sun S. Controlling core/shell Au/FePt nanoparticle electrocatalysis via changing the core size and shell thickness. NANOSCALE 2016; 8:2626-2631. [PMID: 26676367 DOI: 10.1039/c5nr06492a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Using a modified seed-mediated method, we synthesized core/shell Au/FePt nanoparticles (NPs) with Au sizes of 4, 7, and 9 nm and the FePt shell was controlled to have similar FePt compositions and 0.5, 1, and 2 nm thickness. We studied both core and shell effects on electrochemical and electrocatalytic properties of the Au/FePt NPs, and found that the Au core did change the redox chemistry of the FePt shell and promoted its electrochemical oxidation of methanol. The catalytic activity was dependent on the FePt thicknesses, but not much on the Au core sizes, and the 1 nm FePt shell was found to be the optimal thickness for catalyzing methanol oxidation in 0.1 M HClO4 + 0.1 M methanol, offering not only high activity (1.19 mA cm(-2) at 0.5 V vs. Ag/AgCl), but also enhanced stability. Our studies demonstrate a general approach to the design and tuning of shell catalysis in the core/shell structure to achieve optimal catalysis for important electrochemical reactions.
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Affiliation(s)
- Xiaolian Sun
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA and State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 261005, China
| | - Dongguo Li
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Shaojun Guo
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA and Department of Materials Science & Engineering, & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China.
| | - Wenlei Zhu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Shouheng Sun
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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449
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Shi Q, Zhu C, Fu S, Du D, Lin Y. One-Pot Fabrication of Mesoporous Core-Shell Au@PtNi Ternary Metallic Nanoparticles and Their Enhanced Efficiency for Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4739-4744. [PMID: 26820165 DOI: 10.1021/acsami.5b12407] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Currently, Pt-based nanomaterials with tailorable shapes, structures, and morphologies are the most popular electrocatalysts for oxygen reduction reaction, which is a significant cathode reaction in fuel cells for renewable energy applications. We have successfully synthesized mesoporous core-shell Au@PtNi ternary metallic nanoparticles through a one-pot reduction method for cathodic materials used as oxygen reduction reaction catalysts. The as-synthesized nanoparticles exhibited superior catalytic activities and long-term stabilities compared with mesoporous core-shell Au@Pt nanoparticles and commercial Pt/C. The unique mesoporous core-shell structures as well as the alloy shells enable the enhanced electrochemical oxygen reduction reaction performances of the Pt-based materials via the electronic effect and geometric effect, holding great promise in fuel cell application.
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Affiliation(s)
- Qiurong Shi
- School of Mechanical and Material Engineering, Washington State University , Pullman, Washington 99164, United States
| | - Chengzhou Zhu
- School of Mechanical and Material Engineering, Washington State University , Pullman, Washington 99164, United States
| | - Shaofang Fu
- School of Mechanical and Material Engineering, Washington State University , Pullman, Washington 99164, United States
| | - Dan Du
- School of Mechanical and Material Engineering, Washington State University , Pullman, Washington 99164, United States
| | - Yuehe Lin
- School of Mechanical and Material Engineering, Washington State University , Pullman, Washington 99164, United States
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450
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Alsalme A, Toraba MA, Khan M, Alzaqri NA, Alshammari SG, Alotaibi MA, Siddiqui MRH. Facile synthesis of nickel based nanostructures from Ni[EMIM]Cl 2 ionic liquid precursor: effects of thermal and chemical methods on the properties of nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra16894a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Graphical representation of the preparation of ionic liquid precursor for the preparation of Ni nanostructures.
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Affiliation(s)
- Ali Alsalme
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Meshary A. Toraba
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mujeeb Khan
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Nabil A. Alzaqri
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Saad G. Alshammari
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mshari A. Alotaibi
- Department of Chemistry
- College of Science and Humanities
- Prince Sattam Bin Abdulaziz University
- 83 Alkharj
- Kingdom of Saudi Arabia
| | - M. Rafiq H. Siddiqui
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
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