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Persaud RR, Chen M, Dixon DA. Prediction of Structures and Atomization Energies of Coinage Metals, (M) n, n < 20: Extrapolation of Normalized Clustering Energies to Predict the Cohesive Energy. J Phys Chem A 2020; 124:1775-1786. [PMID: 32032484 DOI: 10.1021/acs.jpca.9b11801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The geometries of the group 11 coinage metals (n = 2-20) were optimized to determine the lowest energy isomers for each cluster size, singlets for even numbers and doublets for odd numbers. For copper and silver, 2-D (planar) geometries were favored up to n = 6. For gold, 2D (planar) geometries were favored up to n = 13. Normalized clustering energies were plotted as a function of cluster size (n-1/3, for n = 4-20) with various DFT functionals and the CCSD(T)-F12b method and were extrapolated to predict the bulk cohesive energy. In the case of copper and silver, there is excellent agreement between the cohesive energies predicted at the CCSD(T)-F12b level of theory and the experimental values. For gold, the CCSD(T)-F12b values needed to be corrected for spin-orbit relativistic effects to obtain good agreement with experiment. Electronic properties including the HOMO-LUMO gaps for the even clusters and the spin densities for the odd clusters were calculated. The lowest gap is predicted to occur for n = 16 where the HOMO and LUMO are very similar in shape.
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Affiliation(s)
- Rudradatt Randy Persaud
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Mingyang Chen
- Center for Green Innovation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.,Beijing Computational Science Research Center, Beijing 100193, China
| | - David A Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
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Hajimammadov R, Bykov A, Popov A, Juhasz KL, Lorite GS, Mohl M, Kukovecz A, Huuhtanen M, Kordas K. Random networks of core-shell-like Cu-Cu 2O/CuO nanowires as surface plasmon resonance-enhanced sensors. Sci Rep 2018; 8:4708. [PMID: 29549337 PMCID: PMC5856813 DOI: 10.1038/s41598-018-23119-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 03/01/2018] [Indexed: 12/20/2022] Open
Abstract
The rapid oxide formation on pristine unprotected copper surfaces limits the direct application of Cu nanomaterials in electronics and sensor assemblies with physical contacts. However, it is not clear whether the growing cuprous (Cu2O) and cupric oxides (CuO) and the formation of core-shell-like Cu-Cu2O/CuO nanowires would cause any compromise for non-contact optical measurements, where light absorption and subsequent charge oscillation and separation take place such as those in surface plasmon-assisted and photocatalytic processes, respectively. Therefore, we analyze how the surface potential of hydrothermally synthetized copper nanowires changes as a function of time in ambient conditions using Kelvin probe force microscopy in dark and under light illumination to reveal charge accumulation on the nanowires and on the supporting gold substrate. Further, we perform finite element modeling of the optical absorption to predict plasmonic behavior of the nanostructures. The results suggest that the core-shell-like Cu-Cu2O/CuO nanowires may be useful both in photocatalytic and in surface plasmon-enhanced processes. Here, by exploiting the latter, we show that regardless of the native surface oxide formation, random networks of the nanowires on gold substrates work as excellent amplification media for surface-enhanced Raman spectroscopy as demonstrated in sensing of Rhodamine 6G dye molecules.
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Affiliation(s)
- Rashad Hajimammadov
- Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland
| | - Alexander Bykov
- Optoelectronics and Measurement Techniques Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland
| | - Alexey Popov
- Optoelectronics and Measurement Techniques Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland
| | - Koppany L Juhasz
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, Szeged, 6720, Hungary
| | - Gabriela S Lorite
- Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland
| | - Melinda Mohl
- Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland
| | - Akos Kukovecz
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, Szeged, 6720, Hungary
| | - Mika Huuhtanen
- Environmental and Chemical Engineering Research Unit, Faculty of Technology, University of Oulu, P.O. Box 4300, 90570, Oulu, Finland
| | - Krisztian Kordas
- Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, 90570, Oulu, Finland.
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Jang S, Lee J, Nam S, Ko H, Chang ST. Large-Area, Highly Sensitive SERS Substrates with Silver Nanowire Thin Films Coated by Microliter-Scale Solution Process. NANOSCALE RESEARCH LETTERS 2017; 12:581. [PMID: 29101580 PMCID: PMC5670036 DOI: 10.1186/s11671-017-2351-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/24/2017] [Indexed: 06/07/2023]
Abstract
A microliter-scale solution process was used to fabricate large-area, uniform films of silver nanowires (AgNWs). These thin films with cross-AgNWs were deposited onto Au substrates by dragging the meniscus of a microliter drop of a coating solution trapped between two plates. The hot spot density was tuned by controlling simple experimental parameters, which changed the optical properties of the resulting films. The cross-AgNW films on the Au surface served as excellent substrates for surface-enhanced Raman spectroscopy, with substantial electromagnetic field enhancement and good reproducibility.
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Affiliation(s)
- Sooyeon Jang
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 06974 Republic of Korea
| | - Jiwon Lee
- School of Energy and Chemical Engineering, Ulsan National Institute Science & Technology (UNIST), Ulsan, 44919 Republic of Korea
| | - Sangin Nam
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 06974 Republic of Korea
| | - Hyunhyub Ko
- School of Energy and Chemical Engineering, Ulsan National Institute Science & Technology (UNIST), Ulsan, 44919 Republic of Korea
| | - Suk Tai Chang
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 06974 Republic of Korea
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Shi X, Li HW, Ying YL, Liu C, Zhang L, Long YT. In situ monitoring of catalytic process variations in a single nanowire by dark-field-assisted surface-enhanced Raman spectroscopy. Chem Commun (Camb) 2016; 52:1044-7. [DOI: 10.1039/c5cc09220e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this communication, we provide a new method for characterizing the kinetics of a catalytic process on multiple sites of a single nanowire by dark-field-assisted surface-enhanced Raman spectroscopy (DFSERS).
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Affiliation(s)
- Xin Shi
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Hao-Wen Li
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Yi-Lun Ying
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Chang Liu
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- P. R. China
| | - Li Zhang
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
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Lu Q, Lang T, Fan S, Chen W, Zang D, Chen J, Shi M. Analysis of Genomic DNAs from Nine Rosaceae Species Using Surface-Enhanced Raman Scattering. APPLIED SPECTROSCOPY 2015; 69:1487-1495. [PMID: 26555541 DOI: 10.1366/14-07552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Surface-enhanced Raman scattering (SERS) of genomic DNA was used to determine genetic relationships and species identification of nine plants from three subfamilies of Rosaceae. Genomic DNA was extracted, and the SERS spectra were obtained by using a nanosilver collosol at an excitation wavelength of 785 nm. Adenine and ribodesose were the active sites of genomic DNAs in the silver surface-enhanced Raman spectra. The strong peak at 714 cm(-1) was assigned to the stretching vibration of adenine, the strong peak at 1011cm(-1) contributed to the stretching vibration of the deoxyribose and the scissoring vibrations of cytosine, and the strong peak at 625 cm(-1) is the stretching vibration of glycosidic bond and the scissoring vibrations of guanine. The three-dimensional plot of the first, second, and third principal components showed that the nine species could be classified into three categories (three subfamilies), consistent with the traditional classification. The model of the hierarchical cluster combined with the principal component of the second derivative was more reasonable. The results of the cluster analysis showed that apricot (Prunus armeniaca L.) and cherry (Prunus seudocerasus Lindl.) were clustered into one category (Prunoideae); firethorn (Firethorn fortuneana Li.), loquat (Eriobotrya japonica Lindl.), apple (Malus pumila Mill.), and crabapple (Malus hallianna Koehne.) were clustered into a second category (Pomoideae); and potentilla (Potentilla fulgens Wall.), rose (Rosa chinensis Jacd.), and strawberry (Fragaria chiloensis Duchesne.) were clustered into a third category (Rosoideae). These classifications were in accordance with the traditional classification with a correction rate of clustering of 100%. The correct rate of species identification was 100%. These five main results indicate that the genetic relationship and species identification of nine Rosaceae species could be determined by using SERS spectra of their genomic DNAs.
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Affiliation(s)
- Qiu Lu
- Chuxiong Normal University, Department of Chemistry and Life Science, Chuxiong 675000, China
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Fang PP, Lu X, Liu H, Tong Y. Applications of shell-isolated nanoparticles in surface-enhanced Raman spectroscopy and fluorescence. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2014.11.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cure J, Coppel Y, Dammak T, Fazzini PF, Mlayah A, Chaudret B, Fau P. Monitoring the coordination of amine ligands on silver nanoparticles using NMR and SERS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1362-7. [PMID: 25563697 DOI: 10.1021/la504715f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Low size dispersity silver nanoparticles (ca. 6 nm) have been synthesized by the hydrogenolysis of silver amidinate in the presence of hexadecylamine. Combining NMR techniques with SERS and DFT modeling, it is possible to observe an original stabilization mechanism. Amidine moiety is strongly coordinated to the Ag(0) nanoparticles surface whereas HDA ligand is necessary to prevent agglomeration, although it is only weakly interacting with the surface.
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Affiliation(s)
- Jérémy Cure
- STMicroelectronics SAS, 10 impasse Thales de Millet, 37070 Tours, France
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Wongravee K, Gatemala H, Thammacharoen C, Ekgasit S, Vantasin S, Tanabe I, Ozaki Y. Nanoporous silver microstructure for single particle surface-enhanced Raman scattering spectroscopy. RSC Adv 2015. [DOI: 10.1039/c4ra11890a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoporous silver microstructures were successfully fabricated from hexapod AgCl microstructures via a galvanic replacement reaction to be used as an easy handling and reusable SERS substrate.
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Affiliation(s)
- Kanet Wongravee
- Sensor Research Unit
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok
| | - Harnchana Gatemala
- Sensor Research Unit
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok
| | - Chuchaat Thammacharoen
- Sensor Research Unit
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok
| | - Sanong Ekgasit
- Sensor Research Unit
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok
| | - Sanpon Vantasin
- Department of Chemistry
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Ichiro Tanabe
- Department of Chemistry
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Yukihiro Ozaki
- Department of Chemistry
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
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Huang Q, Wen S, Zhu X. Synthesis and characterization of an AgI/Ag hybrid nanocomposite with surface-enhanced Raman scattering performance and photocatalytic activity. RSC Adv 2014. [DOI: 10.1039/c4ra04639k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel AgI/Ag hybrid nanocomposites with good SERS performance and excellent photocatalytic activity were prepared.
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Affiliation(s)
- Qingli Huang
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225009, China
| | - Shengping Wen
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225009, China
| | - Xiashi Zhu
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225009, China
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Xi J, Ni Y, Liu A. Versatile Ag dendrites: simple galvanostatic deposition and applications. NEW J CHEM 2014. [DOI: 10.1039/c3nj01539d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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