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Gondwal M, Sharma N, Joshi nee Pant G, Pratap Singh Gautam B, Singh S, Tumba K, Bahadur I. Bioactivity and Catalytic Reduction of Aryl Nitro‐Compounds by Biosynthesized Silver Nanoparticles using
Skimmiaanquetilia. ChemistrySelect 2023. [DOI: 10.1002/slct.202203782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Manjul Gondwal
- Department of Chemistry Laxman Singh Mahar Government Post Graduate College Pithoragarh 262502 Uttarakhand India
| | - Nidhi Sharma
- School of Applied and Life Sciences Uttaranchal University Dehradun 248007, Uttarakhand India
| | - Geeta Joshi nee Pant
- Department of Chemistry H.N.B. Garhwal University (A Central University) Srinagar (Garhwal) 246174, Uttarakhand India
| | - Bhanu Pratap Singh Gautam
- Department of Chemistry Laxman Singh Mahar Government Post Graduate College Pithoragarh 262502 Uttarakhand India
| | - Sangeeta Singh
- Thermodynamics-Materials-Separations Research Group Department of Chemical Engineering Mangosuthu University of Technology Durban 4031, uMlazi South Africa
| | - Kaniki Tumba
- Thermodynamics-Materials-Separations Research Group Department of Chemical Engineering Mangosuthu University of Technology Durban 4031, uMlazi South Africa
| | - Indra Bahadur
- Department of Chemistry, Faculty of Natural and Agricultural Sciences North-West University (Mafikeng Campus), Private Bag X2046 Mmabatho 2735 South Africa
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Torres-Huerta AL, Antonio-Pérez A, García-Huante Y, Alcázar-Ramírez NJ, Rueda-Silva JC. Biomolecule-Based Optical Metamaterials: Design and Applications. BIOSENSORS 2022; 12:962. [PMID: 36354471 PMCID: PMC9688573 DOI: 10.3390/bios12110962] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Metamaterials are broadly defined as artificial, electromagnetically homogeneous structures that exhibit unusual physical properties that are not present in nature. They possess extraordinary capabilities to bend electromagnetic waves. Their size, shape and composition can be engineered to modify their characteristics, such as iridescence, color shift, absorbance at different wavelengths, etc., and harness them as biosensors. Metamaterial construction from biological sources such as carbohydrates, proteins and nucleic acids represents a low-cost alternative, rendering high quantities and yields. In addition, the malleability of these biomaterials makes it possible to fabricate an endless number of structured materials such as composited nanoparticles, biofilms, nanofibers, quantum dots, and many others, with very specific, invaluable and tremendously useful optical characteristics. The intrinsic characteristics observed in biomaterials make them suitable for biomedical applications. This review addresses the optical characteristics of metamaterials obtained from the major macromolecules found in nature: carbohydrates, proteins and DNA, highlighting their biosensor field use, and pointing out their physical properties and production paths.
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Affiliation(s)
- Ana Laura Torres-Huerta
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Estado de México, Av. Lago de Guadalupe KM 3.5, Margarita Maza de Juárez, Cd. López Mateos, Atizapán de Zaragoza 52926, Mexico
| | - Aurora Antonio-Pérez
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Estado de México, Av. Lago de Guadalupe KM 3.5, Margarita Maza de Juárez, Cd. López Mateos, Atizapán de Zaragoza 52926, Mexico
| | - Yolanda García-Huante
- Departamento de Ciencias Básicas, Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas, Instituto Politécnico Nacional (UPIITA-IPN), Mexico City 07340, Mexico
| | - Nayelhi Julieta Alcázar-Ramírez
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Estado de México, Av. Lago de Guadalupe KM 3.5, Margarita Maza de Juárez, Cd. López Mateos, Atizapán de Zaragoza 52926, Mexico
| | - Juan Carlos Rueda-Silva
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Estado de México, Av. Lago de Guadalupe KM 3.5, Margarita Maza de Juárez, Cd. López Mateos, Atizapán de Zaragoza 52926, Mexico
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK
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Ustun O, Yilmaz A, Yilmaz M. Catalytic and SERS activities of WO 3-based nanowires: the effect of oxygen vacancies, silver nanoparticle doping, and the type of organic dye. Phys Chem Chem Phys 2022; 24:18615-18626. [PMID: 35894693 DOI: 10.1039/d2cp00034b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxygen vacancies in tungsten trioxide (WO3) nanostructures (WO3-x) dominate the major characteristics of the material and determine their activity in various applications including photocatalysis and surface-enhanced Raman spectroscopy (SERS). Despite some studies performed in the last decade, the photocatalytic activity toward different pollutants and SERS activity toward different Raman reporter molecules are still unclear and may provide valuable insights into this research field. Therefore, in this study, we propose WO3-x nanowires (NWs) both as ideal photocatalysts for the degradation of organic pollutants such as crystal violet (CV), methylene blue (MB), malachite green (MG), and rhodamine 6G (R6G) and a SERS platform for the detection of these molecules. In the first step, WO3-x NWs were fabricated through the solvothermal method. Afterward, the oxygen vacancy content of WO3-x NWs was manipulated by the addition of silver ions or H2O2. Although H2O2 led to a remarkable decrease in oxygen vacancies (WO3), the addition of silver ions led to the formation of Ag nanostructures on WO3-x NWs (WO3-x@Ag). Interestingly, the combination of WO3-x and WO3-x@Ag nanosystems with all dye molecules resulted in the formation of H-aggregates due to the strong electrostatic interaction between the nanostructure and dye molecules and then its photocatalytic degradation, while regular degradation of dyes was observed for WO3. In SERS activity tests, each NP system exhibited different activities depending on various parameters including the chemical nature of the nanosystem, the degree of oxygen vacancy, the interaction of the Raman reporter molecule with the surface of the NP, and the resultant formation of H-aggregates or photocatalytic degradation. The combination of MB with WO3-x, WO3-x@Ag, and WO3 created enhancement factors such as 1.6 × 103, 5.4 × 103, and 6.2 × 103, respectively. This report showed that the parameters mentioned here must be considered in detail to evaluate the photocatalytic and SERS activity of the WO3-based nanosystem.
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Affiliation(s)
- Oguzhan Ustun
- Department of Nanoscience and Nanoengineering, Ataturk University, 25240 Erzurum, Turkey.
| | - Asli Yilmaz
- Department of Molecular Biology and Genetics, Ataturk University, 25240 Erzurum, Turkey
| | - Mehmet Yilmaz
- Department of Nanoscience and Nanoengineering, Ataturk University, 25240 Erzurum, Turkey. .,Department of Chemical Engineering, Ataturk University, 25240 Erzurum, Turkey
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Yesuraj J, Lee HO, Pandiyan MK, Jayavelu J, Bhagavathiachari M, Kim K. Bio-engineered hexagon-shaped Co3O4 nanoplates on deoxyribonucleic acid (DNA) scaffold: An efficient electrode material for an asymmetric supercapacitor and electrocatalysis application. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3D hotspot matrix of Au nanoparticles on Au island film with a spacer layer of dithiol molecules for highly sensitive surface-enhanced Raman spectroscopy. Sci Rep 2021; 11:22399. [PMID: 34789757 PMCID: PMC8599516 DOI: 10.1038/s41598-021-01742-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/01/2021] [Indexed: 11/09/2022] Open
Abstract
Engineering of efficient plasmonic hotspots has been receiving great attention to enhance the sensitivity of surface-enhanced Raman scattering (SERS). In the present study, we propose a highly sensitive SERS platform based on Au nanoparticles (AuNPs) on Au island film (AuIF) with a spacer layer of 1,4-benzenedimethanethiol (BDMT). The three-dimensional (3D) hotspot matrix has been rationally designed based on the idea of employing 3D hotspots with a vertical nanogap between AuIF and AuNPs after generating large area two-dimensional hotspots of AuIF. AuNPs@BDMT@AuIF are fabricated by functionalizing BDMT on AuIF and then immobilizing AuNPs. The SERS performance is investigated with Rhodamine 6G as a probe molecule and the determined enhancement factor is 1.3 × 105. The AuNPs@BDMT@AuIF are then employed to detect thiram, which is used as a fungicide, with a detection limit of 13 nM. Our proposed platform thus shows significant potential for use in highly sensitive SERS sensors.
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Zhu Y, Tang H, Wang H, Li Y. In Situ SERS Monitoring of the Plasmon-Driven Catalytic Reaction by Using Single Ag@Au Nanowires as Substrates. Anal Chem 2021; 93:11736-11744. [PMID: 34461733 DOI: 10.1021/acs.analchem.1c01926] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single nanowires (NWs), as a kind of new surface-enhanced Raman scattering (SERS) substrates, have received extensive concern owing to their distinctive properties and distinct advantages. In this contribution, single Ag nanowires (AgNWs) and single Au-coated AgNWs (Ag@AuNWs) were fabricated by the laser-assisted pulling method and the galvanic replacement reaction, respectively. The prepared single Ag@AuNWs show both high SERS activity and catalytic activity through in situ monitoring and assessing the plasmon-driven surface-catalytic reaction of 4-nitrothiophenol (4-NTP) dimerizing to 4,4'-dimercaptoazobenzene and the reduction reaction of 4-NTP to para-aminothiophenol, respectively. It was found that the intensity of the Raman peak was affected greatly by the laser power, and the Raman peak could still be observed at 0.05% power under mild conditions (633 nm wavelength) in this single nanowire system. From the Raman spectrum, the SERS enhancement factor (EF) of 5.4 × 104 can be obtained, and the EF value of 1.3 × 109 can be reached at optimal conditions. Results have shown that single Ag@AuNWs can be utilized as a good platform for SERS applications with high sensitivity, stability, and reproducibility, which will benefit SERS-based research at the single entity level.
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Affiliation(s)
- Yanyan Zhu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Hao Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
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Kumaravel S, Karthick K, Sankar SS, Karmakar A, Madhu R, Kundu S. Prospects in interfaces of biomolecule DNA and nanomaterials as an effective way for improvising surface enhanced Raman scattering: A review. Adv Colloid Interface Sci 2021; 291:102399. [PMID: 33774595 DOI: 10.1016/j.cis.2021.102399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 01/20/2023]
Abstract
Surface Enhanced Raman Scattering (SERS) is a field of research that has shown promising application in the analysis of various substrate molecules by means of rough metallic surfaces. In directing the enhancement of substrate molecules in micro and nano-molar concentrations, plasmonic coupling of metal nanoparticles (NPs), morphology of metal NPs and the closely arrangement of rough metal surfaces that produces 'hot spots' can effectively increase the so-called enhancement factor (EF) that will be applicable in various fields. As the mechanistic aspects are still not clear, research has been triggered all over the world for the past two decades to have a clear understanding in chemical and electromagnetic effects. As the reproducibility of intensity of signals at low concentrations of probe molecules is of a big concern, metal NPs with various scaffolds were prepared and recently bio-molecule, DNA has been studied and showed promising advantages. This review first time highlights metal NPs with DNA interface as an effective rough metallic surface for SERS with high intensity and also with better reproducibility. Based on this review, similar kinds of scaffolds like DNA can be used to further analyze SERS activities of various metal NPs with different morphologies to have high intense signals at low concentrations of probe molecules.
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Affiliation(s)
- Sangeetha Kumaravel
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kannimuthu Karthick
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Selvasundarasekar Sam Sankar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arun Karmakar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ragunath Madhu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Chen Y, Wang K, Chen F, Chang S, Zhang H. Response of HPRT Gene Fragment Functionalized Gold Nanoparticles to Gamma Ray Irradiation. ANAL SCI 2021; 37:309-314. [PMID: 33342922 DOI: 10.2116/analsci.20p248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Radiation-sensitive biomolecules are highly significant for studying biological effects of radiation and developing ionizing radiation detectors based on biomolecules. In this work, we selected hypoxanthine phosphoribosyl transferase gene fragments sensitive to gamma-ray irradiation as a sensing element for radiation detection. The end was modified with thiol groups. The thiol-modified oligonucleotide sequences were coupled to the surface of gold nanoparticles by Au-S covalent bonds. The DNA attached to the surface of gold nanoparticles forms a DNA-AuNPs assembly through base pairing. The assembly was irradiated by gamma rays. And its response to radiation was studied with ultraviolet-visible spectroscopy and surface-enhanced Raman scattering (SERS) spectroscopy techniques. SERS spectroscopy and ultraviolet spectroscopy can detect the response of the DNA-AuNPs assembly to gamma-ray irradiation below 100 and 100 - 250 Gy, respectively. The results indicated that it was feasible to develop a new approach of gamma-ray detectors using biomolecular assemblies of gold nanoparticles.
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Affiliation(s)
- Yu Chen
- Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics
| | - Kaikai Wang
- Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics
| | - Feng Chen
- School of Biomedical Engineering and Informatics, Nanjing Medical University
| | - Shuquan Chang
- Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics
| | - Haiqian Zhang
- Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics.,Jiangsu Key Laboratory for Biomaterials and Devices
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Karthick K, Anantharaj S, Ede SR, Sankar SS, Kumaravel S, Karmakar A, Kundu S. Developments in DNA metallization strategies for water splitting electrocatalysis: A review. Adv Colloid Interface Sci 2020; 282:102205. [PMID: 32721623 DOI: 10.1016/j.cis.2020.102205] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 11/28/2022]
Abstract
The biomolecule DNA with the presence of different functionalities found to interact with different kinds of metal ions and show relatively higher stability over a long period of time when optimized appropriately. With the presence of A-T and G-C pairs, sugar moieties, phosphate functional groups and the double-helical structure, it can assemble both cationic and anionic species and forms a perfect metal-DNA self-assembly. Depending upon the aspect ratio of metal-DNA self-assemblies, metal content and their morphological outcomes, they could deliver variance in the catalytic activities. Such differences can be brought out by varying the synthesis reaction parameters focusing on a specific electrocatalytic application. In this review, recent developments in DNA metallization is elaborated first highlighting the underlying interactions between DNA and cationic/anionic species of various metals following which application of metal-DNA assemblies in electrocatalytic water oxidation and reduction are discussed critically. Knowledge provided in this review thus acts as the guide to various DNA metallization strategies and their subsequent application to water electrolysis for hydrogen generation.
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Affiliation(s)
- Kannimuthu Karthick
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sengeni Anantharaj
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University, Nishiwaseda Campus, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Sivsankara Rao Ede
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Department of Chemistry, Physics and Materials Science, Fayetteville State University, 1200 Murchison Road, Science and Technology Building 305, Fayetteville, NC 28301, USA
| | - Selvasundarasekar Sam Sankar
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sangeetha Kumaravel
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arun Karmakar
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Subrata Kundu
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Dies H, Bottomley A, Nicholls DL, Stamplecoskie K, Escobedo C, Docoslis A. Electrokinetically-Driven Assembly of Gold Colloids into Nanostructures for Surface-Enhanced Raman Scattering. NANOMATERIALS 2020; 10:nano10040661. [PMID: 32252317 PMCID: PMC7221533 DOI: 10.3390/nano10040661] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 03/23/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman scattering (SERS) enables the highly sensitive detection of (bio)chemical analytes in fluid samples; however, its application requires nanostructured gold/silver substrates, which presents a significant technical challenge. Here, we develop and apply a novel method for producing gold nanostructures for SERS application via the alternating current (AC) electrokinetic assembly of gold nanoparticles into two intricate and frequency-dependent structures: (1) nanowires, and (2) branched "nanotrees", that create extended sensing surfaces. We find that the growth of these nanostructures depends strongly on the parameters of the applied AC electric field (frequency and voltage) and ionic composition, specifically the electrical conductivity of the fluid. We demonstrate the sensing capabilities of these gold nanostructures via the chemical detection of rhodamine 6G, a Raman dye, and thiram, a toxic pesticide. Finally, we demonstrate how these SERS-active nanostructures can also be used as a concentration amplification device that can electrokinetically attract and specifically capture an analyte (here, streptavidin) onto the detection site.
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Affiliation(s)
- Hannah Dies
- Department of Chemical Engineering, Queen’s University, Kingston, ON K7L 3N6, Canada; (H.D.); (C.E.)
| | - Adam Bottomley
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada; (A.B.); (K.S.)
| | | | - Kevin Stamplecoskie
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada; (A.B.); (K.S.)
| | - Carlos Escobedo
- Department of Chemical Engineering, Queen’s University, Kingston, ON K7L 3N6, Canada; (H.D.); (C.E.)
| | - Aristides Docoslis
- Department of Chemical Engineering, Queen’s University, Kingston, ON K7L 3N6, Canada; (H.D.); (C.E.)
- Correspondence: ; Tel.: +01-(613)-533-6949
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Darienzo RE, Chen O, Sullivan M, Mironava T, Tannenbaum R. Au nanoparticles for SERS: Temperature-controlled nanoparticle morphologies and their Raman enhancing properties. MATERIALS CHEMISTRY AND PHYSICS 2020; 240:122143. [PMID: 33191968 PMCID: PMC7665167 DOI: 10.1016/j.matchemphys.2019.122143] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Quasi-fractal gold nanoparticles can be synthesized via a modified and temperature controlled procedure initially used for the synthesis of star-like gold nanoparticles. The surface features of nanoparticles lead to improved enhancement of Raman scattering intensity of analyte molecules due to the increased number of sharp surface features possessing numerous localized surface plasmon resonances (LSPR). The LSPR is affected by the size and shape of surface features as well as inter-nanoparticle interactions, as these affect the oscillation modes of electrons on the nanoparticle surfaces. The effect of the particle morphologies on the localized surface plasmon resonance (LSPR) and on the surface-enhancing capabilities of these nanoparticles is explored by comparing different nanoparticle morphologies and concentrations. We show that in a fixed nanoparticle concentration regime, quasi-fractal gold nanoparticles (gold nanocaltrop) provide the highest level of surface enhancement, whereas spherical nanoparticles provide the largest enhancement in a fixed gold concentration regime. The presence of highly branched features enables these nanoparticles to couple with a laser wavelength, despite having no strong absorption band and hence no single surface plasmon resonance. This cumulative LSPR may allow these nanoparticles to be used in a variety of applications in which laser wavelength flexibility is beneficial, such as in medical imaging applications where fluorescence at short laser wavelengths may be coupled with non-fluorescing long laser wavelengths for molecular sensing.
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Affiliation(s)
- Richard E. Darienzo
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
| | - Olivia Chen
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
| | - Maurinne Sullivan
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA
| | - Tatsiana Mironava
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
| | - Rina Tannenbaum
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
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Manukumar H, Yashwanth B, Umesha S, Venkateswara Rao J. Biocidal mechanism of green synthesized thyme loaded silver nanoparticles (GTAgNPs) against immune evading tricky methicillin-resistant Staphylococcus aureus 090 (MRSA090) at a homeostatic environment. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.09.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Coantic-Castex S, Martinez A, Harakat D, Guillaume D, Clivio P. The remarkable UV light invulnerability of thymine GNA dinucleotides. Chem Commun (Camb) 2019; 55:12571-12574. [PMID: 31577282 DOI: 10.1039/c9cc04355a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We herein demonstrate the UV resistance of glycol nucleic acid (GNA) dinucleotides. This resistance sustains the hypothesis of GNA as a nucleic acid prebiotic ancestor on early Earth, a time of intense solar UV light. Such photorobustness, due to the absence of intrastrand base stacking, could offer an opportunity for nanodevice development requiring challenging UV conditions.
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Affiliation(s)
- Stéphanie Coantic-Castex
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR de Pharmacie, 51 rue Cognacq-Jay, F-51096 Reims Cedex, France.
| | - Agathe Martinez
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR des Sciences Exactes et Naturelles, Bâtiment 18, Europol'Agro, BP 1039, F-51687 Reims Cedex 2, France
| | - Dominique Harakat
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR des Sciences Exactes et Naturelles, Bâtiment 18, Europol'Agro, BP 1039, F-51687 Reims Cedex 2, France
| | - Dominique Guillaume
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR de Pharmacie, 51 rue Cognacq-Jay, F-51096 Reims Cedex, France.
| | - Pascale Clivio
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, UFR de Pharmacie, 51 rue Cognacq-Jay, F-51096 Reims Cedex, France.
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Farooqi ZH, Khalid R, Begum R, Farooq U, Wu Q, Wu W, Ajmal M, Irfan A, Naseem K. Facile synthesis of silver nanoparticles in a crosslinked polymeric system by in situ reduction method for catalytic reduction of 4-nitroaniline. ENVIRONMENTAL TECHNOLOGY 2019; 40:2027-2036. [PMID: 29384040 DOI: 10.1080/09593330.2018.1435737] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 01/29/2018] [Indexed: 05/27/2023]
Abstract
In this study, poly(N-isopropylmethacrylamide-co-methacrylic acid) microgels prepared by free radical precipitation polymerization were used as micro-reactors for the synthesis and stabilization of silver nanoparticles. UV-Visible spectroscopy, Transmission Electron Microscopy and Fourier-transform infrared spectroscopy were used to characterize both pure and hybrid microgels. The catalytic reduction of 4-nitroaniline was carried out in the presence of hybrid microgels to test their catalytic activity, and the catalysis mechanism was explored by varying the concentrations of reacting species like 4-nitroaniline and NaBH4, as well as the dose of the catalyst. The kinetic data indicates that this reaction follows pseudo-first order. The variation in apparent rate constant (kapp) with respect to NaBH4 concentration also discloses it to be the following Langmuir-Hinshelwood mechanism. The relationship between catalyst concentration and apparent rate constant was found to be increasing in a linear manner. The data obtained also confirmed that silver nanoparticles loaded microgels have the potential to be used as an excellent micro-reactor for selective reduction of 4-nitroaniline to p-phenylenediamine.
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Affiliation(s)
- Zahoor H Farooqi
- a Institute of Chemistry, University of the Punjab , Lahore , Pakistan
| | - Rida Khalid
- a Institute of Chemistry, University of the Punjab , Lahore , Pakistan
| | - Robina Begum
- b Center of Undergraduate studies, University of the Punjab , Lahore , Pakistan
| | - Umar Farooq
- a Institute of Chemistry, University of the Punjab , Lahore , Pakistan
| | - Qingshi Wu
- c State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, Xiamen University , Xiamen , People's Republic of China
- d Department of Chemistry , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , People's Republic of China
| | - Weitai Wu
- c State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, Xiamen University , Xiamen , People's Republic of China
- d Department of Chemistry , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , People's Republic of China
| | - Muhammad Ajmal
- e Department of Chemistry , University of Wah , Wah Cantt , Pakistan
| | - Ahmad Irfan
- f Research Center for Advanced Material Science (RCAMS), King Khalid University , Abha , Saudi Arabia
- g Department of Chemistry, Faculty of Science , King Khalid University , Abha , Saudi Arabia
| | - Khalida Naseem
- a Institute of Chemistry, University of the Punjab , Lahore , Pakistan
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15
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Sangeetha K, Sankar SS, Karthick K, Anantharaj S, Ede S, Wilson T. S, Kundu S. Synthesis of ultra-small Rh nanoparticles congregated over DNA for catalysis and SERS applications. Colloids Surf B Biointerfaces 2019; 173:249-257. [DOI: 10.1016/j.colsurfb.2018.09.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/19/2018] [Accepted: 09/21/2018] [Indexed: 11/27/2022]
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16
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Hossen MM, Bendickson L, Palo PE, Yao Z, Nilsen-Hamilton M, Hillier AC. Creating metamaterial building blocks with directed photochemical metallization of silver onto DNA origami templates. NANOTECHNOLOGY 2018; 29:355603. [PMID: 29877867 DOI: 10.1088/1361-6528/aacb16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
DNA origami can be used to create a variety of complex and geometrically unique nanostructures that can be further modified to produce building blocks for applications such as in optical metamaterials. We describe a method for creating metal-coated nanostructures using DNA origami templates and a photochemical metallization technique. Triangular DNA origami forms were fabricated and coated with a thin metal layer by photochemical silver reduction while in solution or supported on a surface. The DNA origami template serves as a localized photosensitizer to facilitate reduction of silver ions directly from solution onto the DNA surface. The metallizing process is shown to result in a conformal metal coating, which grows in height to a self-limiting value with increasing photoreduction steps. Although this coating process results in a slight decrease in the triangle dimensions, the overall template shape is retained. Notably, this coating method exhibits characteristics of self-limiting and defect-filling growth, which results in a metal nanostructure that maps the shape of the original DNA template with a continuous and uniform metal layer and stops growing once all available DNA sites are exhausted.
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Affiliation(s)
- Md Mir Hossen
- Division of Materials Sciences and Engineering, Ames Laboratory, Ames, IA, United States of America. Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, United States of America
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17
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Kundu S, Yi SI, Ma L, Chen Y, Dai W, Sinyukov AM, Liang H. Morphology dependent catalysis and surface enhanced Raman scattering (SERS) studies using Pd nanostructures in DNA, CTAB and PVA scaffolds. Dalton Trans 2018; 46:9678-9691. [PMID: 28713887 DOI: 10.1039/c7dt01474k] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium nanoparticles (Pd NPs) of three different morphologies viz., nanocubes with cetyltrimethylammonium bromide (CTAB), nanowires with polyvinyl alcohol (PVA) and Pd NPs with deoxyribonucleic acid (DNA) scaffolds were synthesized by UV-irradiation. Catalysis and surface enhanced Raman scattering (SERS) studies were done with the synthesized morphologically distinct Pd nanostructures for the very first time. The catalytic rate was extremely high with Pd nanowires templated with PVA and the order of the catalytic rate was Pd nanowires in PVA > Pd nanocubes in CTAB > DNA-Pd wire-like assemblies. The highest catalytic rate was observed for PVA capped Pd nanowires which is a few hundred fold higher than other metal NP catalysts. Methylene blue (MB) was used as a Raman analyte for the SERS study and the largest EF of 1.9 × 105 at a peak position of 1391 cm-1 was observed with Pd nanowires in the DNA scaffold as a SERS substrate. The order of the SERS EF values was DNA-Pd wire-like assemblies > Pd nanocubes in CTAB > Pd nanowires in PVA. Beyond everything, the present synthesis route is easy, faster, candid, highly reproducible and cost-effective. In the near future, the same protocol could be applied to synthesize other materials for various applications.
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Affiliation(s)
- Subrata Kundu
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas TX-77843, USA. and Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India
| | - Su-In Yi
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas TX-77843, USA
| | - Lian Ma
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas TX-77843, USA
| | - Yunyun Chen
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas TX-77843, USA.
| | - Wei Dai
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas TX-77843, USA
| | - Alexander M Sinyukov
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
| | - Hong Liang
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas TX-77843, USA. and Department of Mechanical Engineering, Texas A&M University, College Station, Texas TX-77843, USA
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18
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In–situ formation of self-assembled Ag nanoclusters on ct-DNA in the presence of 2-mercaptothioxanthone by using UV–vis light irradiation. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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19
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Chen Z, Liu C, Cao F, Ren J, Qu X. DNA metallization: principles, methods, structures, and applications. Chem Soc Rev 2018; 47:4017-4072. [DOI: 10.1039/c8cs00011e] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review summarizes the research activities on DNA metallization since the concept was first proposed in 1998, covering the principles, methods, structures, and applications.
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Affiliation(s)
- Zhaowei Chen
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Chaoqun Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Fangfang Cao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
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20
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Lv Q, Gao MY, Cheng ZH, Chen Q, Shen AG, Hu JM. Rational synthesis of hollow cubic CuS@Spiky Au core–shell nanoparticles for enhanced photothermal and SERS effects. Chem Commun (Camb) 2018; 54:13399-13402. [DOI: 10.1039/c8cc07788f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The unique “tip spots” can simultaneously enhance SERS and the photothermal effect, facilitating label-free SERS intracellular imaging during cell apoptosis.
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Affiliation(s)
- Qian Lv
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Meng-Yue Gao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Zi-He Cheng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Qiao Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Ai-Guo Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Ji-Ming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
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21
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Sankar SS, Sangeetha K, Karthick K, Anantharaj S, Ede SR, Kundu S. Pt nanoparticle tethered DNA assemblies for enhanced catalysis and SERS applications. NEW J CHEM 2018. [DOI: 10.1039/c8nj03940b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Synthesized Pt NPs tethered on DNA showed good catalytic activity and act as a potential substrate for SERS studies.
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Affiliation(s)
- Selvasundarasekar Sam Sankar
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
| | - Kumaravel Sangeetha
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
| | - Kannimuthu Karthick
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
| | - Sengeni Anantharaj
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
| | - Sivasankara Rao Ede
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
| | - Subrata Kundu
- Materials Electrochemistry Division (MED)
- CSIR-Central Electrochemical Research Institute (CECRI)
- India
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Electrochemical Research Institute (CSIR-CECRI) Campus
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22
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Liang Y, Lin C, Guan J, Li Y. Silver nanoparticle-immobilized porous POM/PLLA nanofibrous membranes: efficient catalysts for reduction of 4-nitroaniline. RSC Adv 2017. [DOI: 10.1039/c6ra28167b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Silver nanoparticle-immobilized porous POM/PLLA NFMs were successfully prepared and used as efficient catalysts for the reduction of 4-nitroaniline.
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Affiliation(s)
- Yuanyuan Liang
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou
- China
| | - Chuanxin Lin
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou
- China
| | - Jipeng Guan
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou
- China
| | - Yongjin Li
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou
- China
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23
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Veisi H, Rostami A, Shirinbayan M. Greener approach for synthesis of monodispersed palladium nanoparticles using aqueous extract of green tea and their catalytic activity for the Suzuki-Miyaura coupling reaction and the reduction of nitroarenes. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3609] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hojat Veisi
- Department of Chemistry; Payame Noor University; 19395-4697 Tehran Iran
| | - Amin Rostami
- Department of Chemistry, Faculty of Science; University of Kurdistan; 66177-15175 Sanandaj Iran
- Research Centre of Nanotechnology; University of Kurdistan; PO Box 416 Sanandaj Iran
| | - Mohadeseh Shirinbayan
- Department of Chemistry, Faculty of Science; University of Kurdistan; 66177-15175 Sanandaj Iran
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24
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Nasrollahzadeh M, Mohammad Sajadi S, Rostami-Vartooni A, Alizadeh M, Bagherzadeh M. Green synthesis of the Pd nanoparticles supported on reduced graphene oxide using barberry fruit extract and its application as a recyclable and heterogeneous catalyst for the reduction of nitroarenes. J Colloid Interface Sci 2016; 466:360-8. [DOI: 10.1016/j.jcis.2015.12.036] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 11/26/2022]
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25
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Xiahou Y, Li Y, Zhang P, Huang L, Wang D, Xia H. Synthesis of composition and size controlled AuAg alloy nanocrystals via Fe2+-assisted citrate reduction. CrystEngComm 2016. [DOI: 10.1039/c6ce01407k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Harrington JA, Harms ZD, Zaleski JM. Electrostatic assembly of gold nanorods on a glass substrate for sustainable photocatalytic reduction via sodium borohydride. RSC Adv 2016. [DOI: 10.1039/c6ra09613a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Gold nanorods were adhered onto a glass substrate for use as a sustainable, reusable photocatalyst to reduce 4-nitroaniline with sodium borohydride.
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27
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Harris RA, Mlambo M, Mdluli PS. Qualitative analysis of some alkanethiols on Au nanoparticles during SERS. RSC Adv 2016. [DOI: 10.1039/c5ra24795k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The surface enhanced Raman spectroscopy enhancement factors (SERS EFs) for different AuNP–surfactant systems are measured and the observed trend is theoretically and qualitatively investigated.
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Affiliation(s)
- R. A. Harris
- University of the Free State
- Physics
- Bloemfontein
- South Africa
| | - M. Mlambo
- University of Pretoria
- Physics
- Pretoria
- South Africa
| | - P. S. Mdluli
- Durban University of Technology
- Chemistry
- Durban
- South Africa
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28
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Ede SR, Mani V, Kalaiselvi N, Kundu S. Microwave assisted fast formation of Sn(MoO4)2 nano-assemblies on DNA scaffold for application in lithium-ion batteries. NEW J CHEM 2016. [DOI: 10.1039/c6nj00343e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Self-assembled aggregated Sn(MoO4)2 nanomaterials on DNA scaffolds exhibit enhanced capability as anode materials in lithium-ion battery (LIB) applications.
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Affiliation(s)
- Sivasankara Rao Ede
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - V. Mani
- Electrochemical Power Sources (ECPS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - N. Kalaiselvi
- Electrochemical Power Sources (ECPS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - Subrata Kundu
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
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29
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Chen M, Kang H, Gong Y, Guo J, Zhang H, Liu R. Bacterial Cellulose Supported Gold Nanoparticles with Excellent Catalytic Properties. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21717-26. [PMID: 26357993 DOI: 10.1021/acsami.5b07150] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Amidoxime surface functionalized bacterial cellulose (AOBC) has been successfully prepared by a simple two-step method without obviously changing the morphology of bacterial cellulose. AOBC has been used as the reducing agent and carrier for the synthesis of gold nanoparticles (AuNPs) that distributed homogeneously on bacterial cellulose surface. Higher content in amidoxime groups in AOBC is beneficial for the synthesis of AuNPs with smaller and more uniform size. The AuNPs/AOBC nanohybrids have excellent catalytic activity for reduction of 4-nitrophenol (4-NP) by using NaBH4. It was found that catalytic activity of AuNPs/AOBC first increases with increasing NaBH4 concentration and temperature, and then leveled off at NaBH4 concentration above 238 mM and temperature above 50 °C. Moreover, AuNPs with smaller size have higher catalytic activity. The highest apparent turnover frequency of AuNPs/AOBC is 1190 h(-1). The high catalytic activity is due to the high affinity of 4-NP with AuNPs/AOBC and the reduced product 4-aminophenol has good solubility in water in the presence of AuNPs/AOBC. The catalytic stability of the AuNPs/AOBC was estimated by filling a fluid column contained AuNPs/AOBC and used for continuously catalysis of the reduction of 4-NP by using NaBH4. The column works well without detection of 4-NP in the eluent after running for more than two months, and it is still running. This work provides an excellent catalyst based on bacterial cellulose stabilized AuNPs and has promising applications in industry.
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Affiliation(s)
- Meiyan Chen
- School of Textile and Material Engineering, Dalian Polytechnic University , Dalian, 116034, China
- Sate Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Hongliang Kang
- Sate Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yumei Gong
- School of Textile and Material Engineering, Dalian Polytechnic University , Dalian, 116034, China
| | - Jing Guo
- School of Textile and Material Engineering, Dalian Polytechnic University , Dalian, 116034, China
| | - Hong Zhang
- School of Textile and Material Engineering, Dalian Polytechnic University , Dalian, 116034, China
| | - Ruigang Liu
- Sate Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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30
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Abbas M, Torati SR, Kim C. A novel approach for the synthesis of ultrathin silica-coated iron oxide nanocubes decorated with silver nanodots (Fe3O4/SiO2/Ag) and their superior catalytic reduction of 4-nitroaniline. NANOSCALE 2015; 7:12192-204. [PMID: 26132976 DOI: 10.1039/c5nr02680f] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A novel sonochemical approach was developed for the synthesis of different core/shell structures of Fe3O4/SiO2/Ag nanocubes and SiO2/Ag nanospheres. The total reaction time of the three sonochemical steps for the synthesis of Fe3O4/SiO2/Ag nanocubes is shorter than that of the previously reported methods. A proposed reaction mechanism for the sonochemical functionalization of the silica and the silver on the surface of magnetic nanocubes was discussed in detail. Transmission electron microscopy revealed that the surface of Fe3O4/SiO2 nanocubes was decorated with small Ag nanoparticles of approximately 10-20 nm in size, and the energy dispersive spectroscopy mapping analysis confirmed the morphology of the structure. Additionally, X-ray diffraction data were used to confirm the formation of both phases of a cubic inverse spinel structure for Fe3O4 and bcc structures for Ag in the core/shell structure of the Fe3O4/SiO2/Ag nanocubes. The as-synthesized Fe3O4/SiO2/Ag nanocubes showed a high efficiency in the catalytic reduction reaction of 4-nitroaniline to 4-phenylenediamine and a better performance than both Ag and SiO2/Ag nanoparticles. The grafted silver catalyst was recycled and reused at least fifteen times without a significant loss of catalytic efficiency.
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Affiliation(s)
- Mohamed Abbas
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 711-873 Daegu, South Korea.
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31
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Huang J, Lin L, Sun D, Chen H, Yang D, Li Q. Bio-inspired synthesis of metal nanomaterials and applications. Chem Soc Rev 2015; 44:6330-74. [PMID: 26083903 DOI: 10.1039/c5cs00133a] [Citation(s) in RCA: 240] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This critical review focuses on recent advances in the bio-inspired synthesis of metal nanomaterials (MNMs) using microorganisms, viruses, plants, proteins and DNA molecules as well as their applications in various fields. Prospects in the design of bio-inspired MNMs for novel applications are also discussed.
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Affiliation(s)
- Jiale Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, and National Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, Xiamen University, Xiamen, P. R. China.
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32
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Anantharaj S, Nithiyanantham U, Ede SR, Ayyappan E, Kundu S. π-stacking intercalation and reductant assisted stabilization of osmium organosol for catalysis and SERS applications. RSC Adv 2015. [DOI: 10.1039/c4ra15521a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Size-selective, mono-dispersed osmium organosol have been synthesized in toluene which is stabilized by π-stacking intercalation and electrostatic interactions for application in catalysis and SERS studies.
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Affiliation(s)
- S. Anantharaj
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - U. Nithiyanantham
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - Sivasankara Rao Ede
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - E. Ayyappan
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
| | - Subrata Kundu
- Electrochemical Materials Science (ECMS) Division
- CSIR-Central Electrochemical Research Institute (CECRI)
- Karaikudi-630006
- India
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33
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Dhand C, Dwivedi N, Loh XJ, Jie Ying AN, Verma NK, Beuerman RW, Lakshminarayanan R, Ramakrishna S. Methods and strategies for the synthesis of diverse nanoparticles and their applications: a comprehensive overview. RSC Adv 2015. [DOI: 10.1039/c5ra19388e] [Citation(s) in RCA: 398] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Various methods to synthesize diverse nanoparticles with their different applications.
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Affiliation(s)
- Chetna Dhand
- Anti-Infectives Research Group
- Singapore Eye Research Institute
- Singapore 169856
| | - Neeraj Dwivedi
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117582
| | - Xian Jun Loh
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 117602
| | - Alice Ng Jie Ying
- Anti-Infectives Research Group
- Singapore Eye Research Institute
- Singapore 169856
| | - Navin Kumar Verma
- Anti-Infectives Research Group
- Singapore Eye Research Institute
- Singapore 169856
- Lee Kong Chian School of Medicine
- Nanyang Technological University
| | - Roger W. Beuerman
- Anti-Infectives Research Group
- Singapore Eye Research Institute
- Singapore 169856
- Duke-NUS SRP Neuroscience and Behavioral Disorders
- Singapore 169857
| | - Rajamani Lakshminarayanan
- Anti-Infectives Research Group
- Singapore Eye Research Institute
- Singapore 169856
- Duke-NUS SRP Neuroscience and Behavioral Disorders
- Singapore 169857
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore 117576
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34
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Jiang J, Wang S, Wu H, Zhang J, Li H, Jia J, Wang X, Liao J. Facile and rapid fabrication of large-scale silver nanoparticles arrays with high SERS performance. RSC Adv 2015. [DOI: 10.1039/c5ra22358j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile and rapid self-assembly method for fabricating a high performance SERS substrate was reported here by using ascorbic acid as an active reagent.
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Affiliation(s)
- Jiaolai Jiang
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
| | - Shaofei Wang
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
| | - Haoxi Wu
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
| | - Jing Zhang
- Institute of Fluid Physics
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Haibo Li
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
| | - Jianping Jia
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
| | - Xiaolin Wang
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Junsheng Liao
- Science and Technology on Surface Physics and Chemistry Laboratory
- Jiangyou
- P. R. China
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35
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Anantharaj S, Nithiyanantham U, Ede SR, Kundu S. Osmium Organosol on DNA: Application in Catalytic Hydrogenation Reaction and in SERS Studies. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503667y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Anantharaj
- Electrochemical Materials
Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu India
| | - U. Nithiyanantham
- Electrochemical Materials
Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu India
| | - Sivasankara Rao Ede
- Electrochemical Materials
Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu India
| | - Subrata Kundu
- Electrochemical Materials
Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu India
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36
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Ede SR, Nithiyanantham U, Gill RS, Kundu S. Electrically conducting osmium nano-chain networks with superior catalytic and SERS performance. RSC Adv 2014. [DOI: 10.1039/c4ra11003j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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37
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Ede SR, Nithiyanantham U, Kundu S. Enhanced catalytic and SERS activities of CTAB stabilized interconnected osmium nanoclusters. Phys Chem Chem Phys 2014; 16:22723-34. [DOI: 10.1039/c4cp03068k] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Ede SR, Ramadoss A, Anantharaj S, Nithiyanantham U, Kundu S. Enhanced catalytic and supercapacitor activities of DNA encapsulated β-MnO2nanomaterials. Phys Chem Chem Phys 2014; 16:21846-59. [DOI: 10.1039/c4cp02884h] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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39
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Nithiyanantham U, Ramadoss A, Ede SR, Kundu S. DNA mediated wire-like clusters of self-assembled TiO₂ nanomaterials: supercapacitor and dye sensitized solar cell applications. NANOSCALE 2014; 6:8010-8023. [PMID: 24905088 DOI: 10.1039/c4nr01836b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new route for the formation of wire-like clusters of TiO₂ nanomaterials self-assembled in DNA scaffold within an hour of reaction time is reported. TiO₂ nanomaterials are synthesized by the reaction of titanium-isopropoxide with ethanol and water in the presence of DNA under continuous stirring and heating at 60 °C. The individual size of the TiO₂ NPs self-assembled in DNA and the diameter of the wires can be tuned by controlling the DNA to Ti-salt molar ratios and other reaction parameters. The eventual diameter of the individual particles varies between 15 ± 5 nm ranges, whereas the length of the nanowires varies in the 2-3 μm range. The synthesized wire-like DNA-TiO₂ nanomaterials are excellent materials for electrochemical supercapacitor and DSSC applications. From the electrochemical supercapacitor experiment, it was found that the TiO₂ nanomaterials showed different specific capacitance (Cs) values for the various nanowires, and the order of Cs values are as follows: wire-like clusters (small size) > wire-like clusters (large size). The highest Cs of 2.69 F g(-1) was observed for TiO₂ having wire-like structure with small sizes. The study of the long term cycling stability of wire-like clusters (small size) electrode were shown to be stable, retaining ca. 80% of the initial specific capacitance, even after 5000 cycles. The potentiality of the DNA-TiO₂ nanomaterials was also tested in photo-voltaic applications and the observed efficiency was found higher in the case of wire-like TiO₂ nanostructures with larger sizes compared to smaller sizes. In future, the described method can be extended for the synthesis of other oxide based materials on DNA scaffold and can be further used in other applications like sensors, Li-ion battery materials or treatment for environmental waste water.
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Affiliation(s)
- U Nithiyanantham
- Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India.
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40
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Zhang Y, Chu W, Foroushani AD, Wang H, Li D, Liu J, Barrow CJ, Wang X, Yang W. New Gold Nanostructures for Sensor Applications: A Review. MATERIALS 2014; 7:5169-5201. [PMID: 28788124 PMCID: PMC5455824 DOI: 10.3390/ma7075169] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 06/23/2014] [Accepted: 07/07/2014] [Indexed: 12/19/2022]
Abstract
Gold based structures such as nanoparticles (NPs) and nanowires (NWs) have widely been used as building blocks for sensing devices in chemistry and biochemistry fields because of their unusual optical, electrical and mechanical properties. This article gives a detailed review of the new properties and fabrication methods for gold nanostructures, especially gold nanowires (GNWs), and recent developments for their use in optical and electrochemical sensing tools, such as surface enhanced Raman spectroscopy (SERS).
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Affiliation(s)
- Yuanchao Zhang
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
- School of Life and Environmental Sciences, Deakin University, Deakin, VIC 3217, Australia.
| | - Wendy Chu
- School of Life and Environmental Sciences, Deakin University, Deakin, VIC 3217, Australia.
| | | | - Hongbin Wang
- School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650031, China.
| | - Da Li
- School of Life and Environmental Sciences, Deakin University, Deakin, VIC 3217, Australia.
| | - Jingquan Liu
- College of Chemical Science and Engineering, Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China.
| | - Colin J Barrow
- School of Life and Environmental Sciences, Deakin University, Deakin, VIC 3217, Australia.
| | - Xin Wang
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Wenrong Yang
- School of Life and Environmental Sciences, Deakin University, Deakin, VIC 3217, Australia.
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41
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Farghaly AA, Collinson MM. Electroassisted codeposition of sol-gel derived silica nanocomposite directs the fabrication of coral-like nanostructured porous gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5276-5286. [PMID: 24766096 DOI: 10.1021/la500614g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein, we report on a one-step coelectrodeposition method to form gold-silica nanocomposite materials from which high surface area nanostructured gold electrodes can be produced. The as-prepared Au-SiO2 films possess an interconnected three-dimensional porous framework with different silica-gold ratios depending on the deposition solutions and parameters. Chemical etching of the nanocomposite films using hydrofluoric acid resulted in the formation of nanostructured porous gold films with coral-like structures and pores in the nanometer range. The cross-linkage of the gold coral branches resulted in the generation of a porous framework. X-ray photoelectron spectroscopy confirms the complete removal of silica. Well-controlled surface area enhancement, film thickness, and morphology were achieved by manipulating the deposition parameters, such as potential, time, and gold ion and sol-gel monomer concentrations in the deposition solution. An enhancement in the surface area of the electrode up to 57 times relative to the geometric area has been achieved. The thickness of the as-prepared Au-SiO2 nanocomposite films is relatively high and varied from 8 to 15 μm by varying the applied deposition potential while the thickness of the coral-like nanostructured porous gold films ranged from 0.22 to 2.25 μm. A critical sol-gel monomer concentration (CSGC) was determined at which the deposited silica around the gold coral was able to stabilize the coral-like gold nanostructures, while below the CSGC, the coral-like gold nanostructures were unstable and the surface area of the nanostructured porous gold electrodes decreased.
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Affiliation(s)
- Ahmed A Farghaly
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284-2006, United States
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42
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DNA from natural sources in design of functional devices. Methods 2014; 67:105-15. [DOI: 10.1016/j.ymeth.2014.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 02/20/2014] [Accepted: 03/02/2014] [Indexed: 01/01/2023] Open
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43
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Affiliation(s)
- Marco Filice
- Departamento
de Biocatálisis, Instituto de Catálisis (CSIC) Campus UAM Cantoblanco, 28049 Madrid, Spain
| | - Jose M. Palomo
- Departamento
de Biocatálisis, Instituto de Catálisis (CSIC) Campus UAM Cantoblanco, 28049 Madrid, Spain
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44
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Xiong R, Wang Y, Zhang X, Lu C, Lan L. In situ growth of gold nanoparticles on magnetic γ-Fe2O3@cellulose nanocomposites: a highly active and recyclable catalyst for reduction of 4-nitrophenol. RSC Adv 2014. [DOI: 10.1039/c3ra46761a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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45
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Chen J, Shen W, Das B, Li Y, Qin G. Fabrication of tunable Au SERS nanostructures by a versatile technique and application in detecting sodium cyclamate. RSC Adv 2014. [DOI: 10.1039/c4ra01243g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three tunable Au SERS nanostructures (nanoparticles, nanowire–nanoparticle conjugations, nanofilms) were fabricated and used for sodium cyclamate detection.
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Affiliation(s)
- Jing Chen
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education)
- Northeastern University
- Shenyang 110819, China
- Nevada Nanotechnology Center
- Howard R. Hughes College of Engineering
| | - Wen Shen
- Nevada Nanotechnology Center
- Howard R. Hughes College of Engineering
- University of Nevada
- Las Vegas, USA
| | - Biswajit Das
- Nevada Nanotechnology Center
- Howard R. Hughes College of Engineering
- University of Nevada
- Las Vegas, USA
| | - Yiyan Li
- Department of Electrical and Computer Engineering
- University of Nevada
- Las Vegas, USA
| | - Gaowu Qin
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education)
- Northeastern University
- Shenyang 110819, China
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