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Polyaniline and rare earth metal oxide composition: A distinctive design approach for supercapacitor. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137714] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zhao J, Gao F, Pujari SP, Zuilhof H, Teplyakov AV. Universal Calibration of Computationally Predicted N 1s Binding Energies for Interpretation of XPS Experimental Measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10792-10799. [PMID: 28921989 PMCID: PMC5702496 DOI: 10.1021/acs.langmuir.7b02301] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Computationally predicted N 1s core level energies are commonly used to interpret the experimental measurements obtained with X-ray photoelectron spectroscopy. This work compares the application of Koopmans' theorem to core electrons using the B3LYP functional with two commonly used basis sets, analyzes the factors relevant to the comparison of the computational with experimental data, and presents several correlations that allow an accurate prediction of the N 1s binding energy. The first correlation is obtained with a series of known nitrogen-containing functional groups on well-characterized organic monolayers. This approach can then be reliably extended to a number of nitrogen-containing chemical systems on silicon surfaces in which the nature of the chemical environment of nitrogen atoms had only been proposed based on a number of analytical techniques. In most of those cases, the XPS analysis is consistent with the proposed structures, but is not always sufficient for conclusive assignments. Third, it was attempted to also include N-containing systems on metals. Despite the admittedly oversimplified approach taken in this case (the metal surface is approximated by a single atom), the observed correlations are still experimentally useful, although in this case significant outliers are found. Finally, previously published correlations between experimental and theoretical C 1s data were reexamined, yielding a set of correlations that allow experimentalists to predict C 1s and N 1s XPS spectra with high accuracy.
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Affiliation(s)
- Jing Zhao
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Fei Gao
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Sidharam P. Pujari
- Laboratory of Organic Chemistry, Stippeneng 4, Wageningen University and Research, 6708 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Stippeneng 4, Wageningen University and Research, 6708 WE Wageningen, The Netherlands
- School of Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300072, P.R. China
- Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah 23218, Saudi Arabia
| | - Andrew V. Teplyakov
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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Sanjeeva Rao K, Senthilnathan J, Ting JM, Yoshimura M. Continuous production of nitrogen-functionalized graphene nanosheets for catalysis applications. NANOSCALE 2014; 6:12758-12768. [PMID: 25219381 DOI: 10.1039/c4nr02824d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study reports the "continuous production" of high-quality, few-layer nitrogen-functionalized graphene nanosheets in aqueous solutions directly from graphite via a two-step method. The initial step utilizes our recently developed peroxide-mediated soft and green electrochemical exfoliation approach for the production of few-layer graphene nanosheets. The subsequent step, developed here, produces nitrogen-functionalized graphene nanosheets via selective alkylation/basic hydrolysis reactions using rather a simple nitrogen precursor bromoacetonitrile, which was never reported in the literature. A possible reaction mechanism of the nitrogen-functionalized graphene formation is proposed. The proposed method allows the quantification of the phenolic and hydroxyl functional groups of anodic few-layer graphene via the derivatization chemistry approach. Additionally, a nitrogen-functionalized graphene-gold nanocrystal hybrid is prepared using gold nanocrystals obtained via the microwave irradiation of H[AuCl4] and trisodium citrate solution. A systematic investigation demonstrates that the nitrogen-functionalized graphene-gold nanocrystal hybrid shows enhanced catalytic reduction of carbonyl compounds such as benzaldehyde.
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Affiliation(s)
- Kodepelly Sanjeeva Rao
- Promotion Center for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan.
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Conradie M, Conradie J, Erasmus E. Immobilisation of iron tris(β-diketonates) on a two-dimensional flat amine functionalised silicon wafer: A catalytic study of the formation of urethane, from ethanol and a diisocyanate derivative. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Senthilnathan J, Liu YF, Rao KS, Yoshimura M. Submerged liquid plasma for the synchronized reduction and functionalization of graphene oxide. Sci Rep 2014; 4:4395. [PMID: 24637779 PMCID: PMC3957132 DOI: 10.1038/srep04395] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 02/21/2014] [Indexed: 11/09/2022] Open
Abstract
Formation of reduced and functionalized graphene oxide (r-FGO) at ambient temperature and pressure is demonstrated by generating liquid plasma submerged in acetonitrile and graphene oxide solution. The partial restoration of conjugation (sp(2) domain) and insertion of fluorophores such as nitrile and amine in r-FGO displays enhanced fluorescence property. Presence of nitrile and amine in r-FGO are confirmed by X-ray photoelectron spectroscopy and Fourier transforms infrared spectroscopy. Morphology and optical property of r-FGO are studied with transmission electron microscopy, scanning tunneling microscopy and Ultraviolet-visible spectroscopy measurements. The nitrile and amine present in r-FGO undergo a surface-controlled reversible redox reaction and sp(2)- enriched r-FGO acts as an electrical double layer, providing additional hybrid capacitance or pseudocapacitance. r-FGO shows high cyclic stability with a specific capacitance value of 349 F/g at the scan rate of 10 mV/s. Only marginal reduction of specific capacitance (<10% reduction) is observed at the end of 1000 cycles.
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Affiliation(s)
- Jaganathan Senthilnathan
- Promotion Centre for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Fang Liu
- Promotion Centre for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Kodepelly Sanjeeva Rao
- Promotion Centre for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Masahiro Yoshimura
- Promotion Centre for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan
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Trzebiatowska-Gusowska M, Gągor A, Coetsee E, Erasmus E, Swart HC, Swarts JC. Nano islet formation of formyl- and carboxyferrocene, -ruthenocene, -osmocene and cobaltocenium on amine-functionalized silicon wafers highlighted by crystallographic, AFM and XPS studies. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.08.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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ROCHET FRANÇOIS, BOURNEL FABRICE, CARNIATO STEPHANE, DUFOUR GEORGES, GALLET JEANJACQUES, ILAKOVAC VITA, LE GUEN KARINE, RANGAN SYLVIE, KUBSKY STEPHAN, SIROTTI FAUSTO. NITRILES ADSORBED ON Si(001) AT 300 K STUDIED VIA SYNCHROTRON RADIATION CORE-ELECTRON SPECTROSCOPIES. INTERNATIONAL JOURNAL OF NANOSCIENCE 2011. [DOI: 10.1142/s0219581x07004328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This paper focuses on the use and value of XPS and NEXAFS spectroscopies to unveil the nature of the chemical bond of various bifunctional nitrile molecules adsorbed on Si (001) 2×1 at 300 K. The adsorption modes are also discussed in the light of recent theoretical publications devoted to optimized geometries and reaction paths of these molecules on Si (001).
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Affiliation(s)
- FRANÇOIS ROCHET
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - FABRICE BOURNEL
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - STEPHANE CARNIATO
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - GEORGES DUFOUR
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - JEAN-JACQUES GALLET
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - VITA ILAKOVAC
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - KARINE LE GUEN
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - SYLVIE RANGAN
- Laboratoire de Chimie Physique, Matière et Rayonnement, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
| | - STEPHAN KUBSKY
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin — BP 48, 91192 Gif sur Yvette Cedex, France
| | - FAUSTO SIROTTI
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin — BP 48, 91192 Gif sur Yvette Cedex, France
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