101
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Nariya P, Das M, Shukla F, Thakore S. Synthesis of magnetic silver cyclodextrin nanocomposite as catalyst for reduction of nitro aromatics and organic dyes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112279] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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102
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Yahagi T, Togashi T, Kurihara M. An exclusive deposition method of silver nanoparticles on TiO 2 particles via low-temperature decomposition of silver-alkyldiamine complexes in aqueous media. RSC Adv 2020; 10:4545-4553. [PMID: 35495263 PMCID: PMC9049126 DOI: 10.1039/c9ra10307d] [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: 12/09/2019] [Accepted: 01/17/2020] [Indexed: 11/21/2022] Open
Abstract
The low-temperature decomposition of Ag(i)–dmpda complexes catalytically occurs on TiO2 surfaces in water.
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Affiliation(s)
- Tomohiro Yahagi
- Faculty of Science
- Yamagata University
- Japan
- Technical Support Center
- National Institute of Technology
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103
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Deng J, Wu Y. Green Synthesis and Biomedical Properties of Novel Hydroxypropyl Cellulose-g-Polytetrahydrofuran Graft Copolymers with Silver Nanoparticles. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04799] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jinrui Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yixian Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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104
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Super Stability of Ag Nanoparticle in Crystalline Lamellar (Lc) Liquid Crystal Matrix at Different pH Environment. Symmetry (Basel) 2019. [DOI: 10.3390/sym12010031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The symmetry concept in this paper is related to the natural self-assembly of noble metal nanoparticles in the long range periodic structure of liquid crystal (LC). The current study deliberates the effect of pH on the stability of nanoparticles (NPs) in the lamellar phase of a lyotropic LC environment. The LC was prepared by the mass ratio 0.33:0.22:0.45 for (HDTABr):1-pentanol:water. The LC containing silver nanoparticles (AgNPs) was prepared by replacing the water with Ag solution. The AgNPs were produced by the in situ preparation method in LC. The solution of AgNPs-LC was varied at different pH. The absorption intensities were determined by using ultra-violet spectroscopy (UV-vis). The surface potential and hydrodynamic particle size were determined by using Zeta-potential (measurements). The surface enhanced Raman spectroscopy (SERS) was carried out to enhance the Raman signals of 4-aminobenzenethiol (4-ABT) deposited onto AgNPs as substrate. It is found that all characterizations exhibited super stability for AgNPs dispersed in LC at pH = 3 to 12 with the optimum stability at pH = 5–6. The remarkable stability of NPs is an important indicator of the various applications in nanotechnology and nanoscience fields.
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105
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Silver nanoparticles embedded temperature-sensitive nanofibrous membrane as a smart free-standing SERS substrate. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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106
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Kumar N, Thomas S, Rao R, Maiti N, Kshirsagar RJ. Plasmon-Induced Dimerization of Thiazolidine-2,4-dione on Silver Nanoparticles: Revealed by Surface-Enhanced Raman Scattering Study. J Phys Chem A 2019; 123:9770-9780. [PMID: 31633920 DOI: 10.1021/acs.jpca.9b07367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface-enhanced Raman scattering (SERS) study carried on thiazolidine-2,4-dione (TZD), a pharmacologically active heterocyclic compound, points to the presence of TZD dimer formed by plasmon-induced dimerization reaction of TZD on the surface of silver nanoparticles (Ag NP) at TZD concentrations of 10-3 M and above. The evidence for the presence of dimer was obtained from the appearance of a prominent band at 1566 cm-1 corresponding to the ν(C═C) band (a characteristic vibrational band observed for the Knoevenagel condensation reaction products) which is absent in the normal Raman scattering (NRS) spectra of TZD solid/solution. The observed spectrum compares well with the calculated spectrum of dimer obtained using density functional theory (DFT) calculations. The dimerization reaction is plausibly induced by the transfer of hot electrons generated by the nonradiative plasmon decay of Ag NP, and the proposed reaction mechanism is discussed. However, at lower concentrations (10-4-10-6 M), the characteristic dimer peak (1566 cm-1) is absent and the SERS spectra resemble more the NRS spectrum of TZD with a few changes. The spectral analysis supported by DFT calculations showed that TZD molecules undergo deprotonation and get adsorbed on the Ag NP surface as enolate forms. The proximity of TZD molecules on the surface of Ag NP is a necessary factor for the dimerization to occur. At lower concentrations, most molecules lie apart and reactions between molecules become less feasible, and they remain as monomers on the surface, while at higher concentrations the molecules are closer to each other on the Ag NP surface favoring the dimerization reaction to take place, leading to the formation of the dimer.
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Affiliation(s)
- Naveen Kumar
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | | | - Rekha Rao
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | - N Maiti
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | - R J Kshirsagar
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
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107
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Tarannum N, Divya, Gautam YK. Facile green synthesis and applications of silver nanoparticles: a state-of-the-art review. RSC Adv 2019; 9:34926-34948. [PMID: 35530673 PMCID: PMC9074700 DOI: 10.1039/c9ra04164h] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 10/07/2019] [Indexed: 12/12/2022] Open
Abstract
In the field of nanotechnology, the development of reliable and eco-friendly methods for the synthesis of NPs is crucial. The conventional methods for the synthesis of NPs are costly, toxic, and not ecofriendly. To overcome these issues, natural sources such as plant, bacteria, fungi, and biopolymers have been used to synthesize AgNPs. These natural sources act as reducing and capping agents. The shape, size, and applications of AgNPs are prominently affected by the reaction parameters under which they are synthesized. Accessible distributed data on the synthesis of AgNPs include the impact of different parameters (temperature and pH), characterization techniques (DLS, UV-vis, FTIR, XRD, SEM, TEM and EDX), properties and their applications. This review paper discusses all the natural sources such as plants, bacteria, fungi, and biopolymers that have been used for the synthesis of AgNPs in the last ten years. AgNPs synthesized by green methods have found potential applications in a wide spectrum of areas including drug delivery, DNA analysis and gene therapy, cancer treatment, antimicrobial agents, biosensors, catalysis, SERS and magnetic resonance imaging (MRI). The current limitations and future prospects for the synthesis of inorganic nanoparticles by green methods are also discussed herein.
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Affiliation(s)
- Nazia Tarannum
- Department of Chemistry, Chaudhary Charan Singh University Meerut 250004 India
| | - Divya
- Department of Chemistry, Chaudhary Charan Singh University Meerut 250004 India
| | - Yogendra K Gautam
- Smart Materials and Sensor Laboratory, Department of Physics, Chaudhary Charan Singh University Meerut 250004 India
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108
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Begum R, Farooqi ZH, Aboo AH, Ahmed E, Sharif A, Xiao J. Reduction of nitroarenes catalyzed by microgel-stabilized silver nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:399-408. [PMID: 31176075 DOI: 10.1016/j.jhazmat.2019.05.080] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/18/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
Poly(N-isopropylacrylamide-co-acrylamide) (PNA-BIS-2) microgels were synthesized by free radical precipitation polymerization in aqueous medium. Spherical Ag nanoparticles with diameter of 10-20 nm were fabricated inside the PNA-BIS-2 microgels by in-situ reduction of silver nitrate using sodium borohydride as reducing agent. The Ag nanoparticles- loaded hybrid microgels were characterized by Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Energy dispersive X-ray (EDX), Scanning transmission electron microscopy (STEM), Ultraviolet visible spectroscopy (UV Visible), Thermogravimetric analysis (TGA) and X-ray diffraction (XRD). Ag contents in the hybrid system were determined by inductively coupled plasma - optical emission spectrometry (ICP-OES). Various nitroarenes were successfully converted into their respective aromatic amines with good to excellent yields (ranging from 75% to 97%) under mild reaction conditions. The catalyst has ability to successfully convert substituted nitroarenes into desired products keeping many functionalities intact. The catalyst can be stored for long time without any sign of aggregation and can be used multiple times without any significant loss in its catalytic activity.
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Affiliation(s)
- Robina Begum
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK; Institute of Chemistry, University of the Punjab, New Campus Lahore, 54590, Pakistan; Centre for Undergraduate Studies, University of the Punjab, New Campus Lahore, 54590, Pakistan
| | - Zahoor H Farooqi
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK; Institute of Chemistry, University of the Punjab, New Campus Lahore, 54590, Pakistan.
| | - Ahmed H Aboo
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK
| | - Ejaz Ahmed
- Institute of Chemistry, University of the Punjab, New Campus Lahore, 54590, Pakistan
| | - Ahsan Sharif
- Institute of Chemistry, University of the Punjab, New Campus Lahore, 54590, Pakistan
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.
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109
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Sulaiman KO, Sudheeshkumar V, Scott RWJ. Activation of atomically precise silver clusters on carbon supports for styrene oxidation reactions. RSC Adv 2019; 9:28019-28027. [PMID: 35530486 PMCID: PMC9070844 DOI: 10.1039/c9ra05566e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/29/2019] [Indexed: 01/24/2023] Open
Abstract
Metal clusters have distinct features such as large surface area, low-coordination-atom enriched surfaces, and discrete energy levels that influence their behavior during catalytic reactions. Atomically-precise Ag clusters, which are analogues of more well-studied Au clusters, are yet to be fully explored as catalysts for various chemical reactions. 2,4-Dimethylbenzenethiol-protected Ag25 clusters were prepared and deposited onto carbon supports followed by calcination. Results from X-ray absorption fine structure (EXAFS) spectroscopy measurements and other characterization techniques indicated that thermal activation of carbon-supported Ag25 clusters resulted in dethiolation of Ag clusters at 250 °C and beyond, and consequently mild growth in particle sizes of Ag clusters on carbon supports was seen with increasing activation temperatures. Both as-prepared and activated Ag25 clusters were active for styrene oxidation reactions, with high selectivity towards styrene oxide, without using any promoter. Results show that mild activation at 250 °C yields the most active catalysts, and higher activation temperatures lead to decreased activities and slightly poorer selectivity to styrene oxidation as a result of cluster sintering. EXAFS data shows the resulting activated clusters are composed of Ag metal and that all thiols are removed from the Ag cluster surfaces, though XPS data shows that thiol oxidation products are still present in the sample.
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Affiliation(s)
- Kazeem O Sulaiman
- Department of Chemistry, University of Saskatchewan 110 Science Place Saskatoon Saskatchewan S7N 5C9 Canada
| | - V Sudheeshkumar
- Department of Chemistry, University of Saskatchewan 110 Science Place Saskatoon Saskatchewan S7N 5C9 Canada
| | - Robert W J Scott
- Department of Chemistry, University of Saskatchewan 110 Science Place Saskatoon Saskatchewan S7N 5C9 Canada
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110
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Kandula V, Nagababu U, Behera M, Yennam S, Chatterjee A. A facile green synthesis of silver nanoparticles: An investigation on catalytic hydroxylation studies for efficient conversion of aryl boronic acids to phenol. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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111
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Mallick S, Mukhi P, Kumari P, Mahato KR, Verma SK, Das D. Synthesis, Characterization and Catalytic Application of Starch Supported Cuprous Iodide Nanoparticles. Catal Letters 2019. [DOI: 10.1007/s10562-019-02909-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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112
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Mir R, Rowshanpour R, Dempsey K, Pilkington M, Dudding T. Selective Aerobic Oxidation of Benzylic Alcohols Catalyzed by a Dicyclopropenylidene-Ag(I) Complex. J Org Chem 2019; 84:5726-5731. [PMID: 30896944 DOI: 10.1021/acs.joc.9b00624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The unprecedented synthesis, single-crystal X-ray structure, and first catalytic application of a dicarbene-Ag(I) complex [Ag(BAC)2][CO2CF3] (BAC = bis(diisopropyl)aminocyclopropenylidene) is reported. This novel complex provides a versatile catalytic platform for selective aerobic oxidation of benzylic alcohols to aldehyde or ketone products in high yields. Ease of experimental execution coupled with the use of abundant atmospheric molecular oxygen as an oxidant and low catalyst loading are inherit strengths of these oxidations.
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Affiliation(s)
- Roya Mir
- Department of Chemistry , Brock University , 1812 Sir Isaac Brock Way , St. Catharines , Ontario , Canada L2S 3A1
| | - Rozhin Rowshanpour
- Department of Chemistry , Brock University , 1812 Sir Isaac Brock Way , St. Catharines , Ontario , Canada L2S 3A1
| | - Katie Dempsey
- Department of Chemistry , Brock University , 1812 Sir Isaac Brock Way , St. Catharines , Ontario , Canada L2S 3A1
| | - Melanie Pilkington
- Department of Chemistry , Brock University , 1812 Sir Isaac Brock Way , St. Catharines , Ontario , Canada L2S 3A1
| | - Travis Dudding
- Department of Chemistry , Brock University , 1812 Sir Isaac Brock Way , St. Catharines , Ontario , Canada L2S 3A1
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113
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Sarkar D, Khare D, Kaushal A, Acharya C, Bahadur J, Prakash J, Donthula H, Dasgupta K. Green and scalable synthesis of nanosilver loaded silica microparticles by spray-drying: application as antibacterial agent, catalyst and SERS substrate. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01031-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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114
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Liao G, Fang J, Li Q, Li S, Xu Z, Fang B. Ag-Based nanocomposites: synthesis and applications in catalysis. NANOSCALE 2019; 11:7062-7096. [PMID: 30931457 DOI: 10.1039/c9nr01408j] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Ag-Based nanocomposites, including supported Ag nanocomposites and bimetallic Ag nanocomposites, have been intensively investigated as highly efficient catalysts because of their high activity and stability, easy preparation, low cost, and low toxicity. Herein, we systematically summarize and comprehensively evaluate versatile synthetic strategies for the preparation of Ag-based nanocomposites, and outline their recent advances in catalytic oxidation, catalytic reduction, photocatalysis and electrocatalysis. In addition, the challenges and prospects related to Ag-based nanocomposites for various catalytic applications are also discussed. In light of the most recent advances in Ag-based nanocomposites for catalysis applications, this review provides a comprehensive assessment on the material selection, synthesis and catalytic characteristics of these catalysts, which offers a strategic guide to build a close connection between Ag nanocomposites and catalysis applications.
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Affiliation(s)
- Guangfu Liao
- School of Environment and Civil Engineering, Dongguan University of Technology, Guangdong 523808, China.
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115
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Ghosh S, Satapathy SS, Ghosh K, Jauhari S, Panda SK, Si S. Carbon Dots Assisted Synthesis of Gold Nanoparticles and Their Catalytic Activity in 4‐Nitrophenol Reduction. ChemistrySelect 2019. [DOI: 10.1002/slct.201804040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Souvik Ghosh
- School of Chemical TechnologyKIIT Deemed to be University Bhubaneswar - 751024 India
- Sardar Vallabhbhai National Institute of Technology Surat - 395 007 India
| | - Smith S. Satapathy
- School of Chemical TechnologyKIIT Deemed to be University Bhubaneswar - 751024 India
- School of Applied SciencesKIIT Deemed to be University Bhubaneswar - 751024 India
| | - Kowsik Ghosh
- School of Chemical TechnologyKIIT Deemed to be University Bhubaneswar - 751024 India
- Sardar Vallabhbhai National Institute of Technology Surat - 395 007 India
| | - Smita Jauhari
- Sardar Vallabhbhai National Institute of Technology Surat - 395 007 India
| | - Subhendu K. Panda
- CSIR-Central Electrochemical Research Institute Karaikudi-630 003 India
| | - Satyabrata Si
- School of Chemical TechnologyKIIT Deemed to be University Bhubaneswar - 751024 India
- School of BiotechnologyKIIT Deemed to be University Bhubaneswar - 751024 India
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116
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Miao L, Liu G, Wang J. Ag-Nanoparticle-Bearing Poly(vinylidene fluoride) Nanofiber Mats as Janus Filters for Catalysis and Separation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7397-7404. [PMID: 30689345 DOI: 10.1021/acsami.8b20759] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hydrophilic Ag nanoparticles were pattern-deposited onto one side of an electrospun poly(vinylidene fluoride) (PVDF) nanofiber mat, yielding a Janus filter. The filter was used to separate a receiver cell from a reactor cell that contained an aqueous 4-nitrophenol/NaBH4 solution. Upon contact with this solution, the Ag nanoparticles catalyzed the reduction of 4-nitrophenol to 4-aminophenol. After the reaction reached completion, ethyl acetate was added into the reactor to extract the product. During this process, the ethyl acetate containing 4-aminophenol also selectively permeated regions of the hydrophobic yet oleophilic PVDF mat that were not covered by Ag nanoparticles. The product was obtained after the evaporation of ethyl acetate. This paper demonstrates the first use of a Janus filter in a catalytic separatory reactor that catalyzes a chemical reaction and then facilitates the eventual separation of the formed product via filtration.
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Affiliation(s)
- Lei Miao
- Foshan University , 18 Jiangwan 1st Road , Foshan , Guangdong 528000 , P. R. China
- Queen's University , 90 Bader Lane , Kingston , Ontario K7L 3N6 , Canada
| | - Guojun Liu
- Queen's University , 90 Bader Lane , Kingston , Ontario K7L 3N6 , Canada
| | - Jiandong Wang
- Queen's University , 90 Bader Lane , Kingston , Ontario K7L 3N6 , Canada
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117
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Kay Lup AN, Abnisa F, Daud WMAW, Aroua MK. Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO
2
catalyst. ASIA-PAC J CHEM ENG 2019. [DOI: 10.1002/apj.2293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andrew Ng Kay Lup
- Department of Chemical Engineering, Faculty of EngineeringUniversity of Malaya Kuala Lumpur Malaysia
| | - Faisal Abnisa
- Department of Chemical and Material Engineering, Faculty of EngineeringKing Abdulaziz University Jeddah Saudi Arabia
| | - Wan Mohd Ashri Wan Daud
- Department of Chemical Engineering, Faculty of EngineeringUniversity of Malaya Kuala Lumpur Malaysia
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization, School of Science and TechnologySunway University Petaling Jaya Malaysia
- Department of EngineeringLancaster University Lancaster UK
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118
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Synergistic interaction of metal–acid sites for phenol hydrodeoxygenation over bifunctional Ag/TiO2 nanocatalyst. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.08.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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119
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Norsyuhada W, Mohd Shukri W, Bakhtiar H, Islam S, Bidin N. Synthesis and Characterization of Gold-Silver Nanoparticles in Deionized Water by Pulsed Laser Ablation (PLAL) Technique at Different Laser Parameter. INTERNATIONAL JOURNAL OF NANOSCIENCE 2019. [DOI: 10.1142/s0219581x18500151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gold and silver nanoparticles (NPs) are physically synthesized using Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG)-pulsed laser ablation in liquid (PLAL) technique which is a rapid, simple and efficient one-step synthesis. The gold and silver colloidal solutions are separately prepared by 1064[Formula: see text]nm of pulsed laser ablation of metallic target (gold and silver) which is immersed in deionized water. Ultraviolet–visible spectroscopy (UV–Vis) analysis shows the absorption band of gold and silver NPs at [Formula: see text][Formula: see text]nm and [Formula: see text][Formula: see text]nm, respectively. The absorption spectra and color variations of gold and silver NPs at three different laser parameters (output laser energies, target distances from focal point and laser time exposures). High-resolution transmission electron microscopy shows the spherical shape of gold and silver NPs with 34[Formula: see text]nm and 33[Formula: see text]nm diameter of size, respectively, are reported. The aggregation and particle sizes of gold and silver NPs due to minimum energy (75[Formula: see text]mJ) and maximum energy (311[Formula: see text]mJ) are observed.
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Affiliation(s)
- W. Norsyuhada
- Laser Centre, Institute IbnuSina for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - W. Mohd Shukri
- Laser Centre, Institute IbnuSina for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Hazri Bakhtiar
- Laser Centre, Institute IbnuSina for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Shumaila Islam
- Laser Centre, Institute IbnuSina for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Noriah Bidin
- Laser Centre, Institute IbnuSina for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
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120
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Russo M, Spinella A, Di Vincenzo A, Lazzara G, Correro MR, Shahgaldian P, Lo Meo P, Caponetti E. Synergistic Activity of Silver Nanoparticles and Polyaminocyclodextrins in Nanosponge Architectures. ChemistrySelect 2019. [DOI: 10.1002/slct.201803424] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marco Russo
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17-90128 Palermo Italy
| | - Alberto Spinella
- Centro Grandi Apparecchiature - AteNCenter; University of Palermo; Via F. Marini 14 - 90128 Palermo Italy
| | - Antonella Di Vincenzo
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17-90128 Palermo Italy
| | - Giuseppe Lazzara
- Department of Physics and Chemistry; University of Palermo; V.le delle Scienze pad. 17-90128 Palermo Italy
| | - M. Rita Correro
- Institut für Chemie und Bioanalytik; Hochschule für Life Sciences FHNW; Hofackerstrasse 30-4132 Muttenz Switzerland
| | - Patrick Shahgaldian
- Institut für Chemie und Bioanalytik; Hochschule für Life Sciences FHNW; Hofackerstrasse 30-4132 Muttenz Switzerland
| | - Paolo Lo Meo
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17-90128 Palermo Italy
| | - Eugenio Caponetti
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17-90128 Palermo Italy
- Centro Grandi Apparecchiature - AteNCenter; University of Palermo; Via F. Marini 14 - 90128 Palermo Italy
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121
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Mabey T, Andrea Cristaldi D, Oyston P, Lymer KP, Stulz E, Wilks S, William Keevil C, Zhang X. Bacteria and nanosilver: the quest for optimal production. Crit Rev Biotechnol 2019; 39:272-287. [DOI: 10.1080/07388551.2018.1555130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Thomas Mabey
- School of Engineering & Institute for Life Sciences, University of Southampton, Southampton, UK
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
| | - Domenico Andrea Cristaldi
- School of Engineering & Institute for Life Sciences, University of Southampton, Southampton, UK
- School of Chemistry & Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Petra Oyston
- Chemical, Biological and Radiological Division, Dstl Porton Down, Salisbury, UK
| | - Karl P. Lymer
- Platform Systems Division, Dstl Porton Down, Salisbury, UK
| | - Eugen Stulz
- School of Chemistry & Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Sandra Wilks
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
| | - Charles William Keevil
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
| | - Xunli Zhang
- School of Engineering & Institute for Life Sciences, University of Southampton, Southampton, UK
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122
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Konopatsky AS, Firestein KL, Leybo DV, Sukhanova EV, Popov ZI, Fang X, Manakhov AM, Kovalskii AM, Matveev AT, Shtansky DV, Golberg DV. Structural evolution of Ag/BN hybrids via a polyol-assisted fabrication process and their catalytic activity in CO oxidation. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01464k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced catalytic activity of Ag/BN nanohybrids is ascribed to the formation of a thin intermediate Ag–O–B layer.
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Affiliation(s)
- Anton S. Konopatsky
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | | | - Denis V. Leybo
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | - Ekaterina V. Sukhanova
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
- Moscow Institute of Physics and Technology (State University)
- Moscow Region
| | - Zakhar I. Popov
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
- Emanuel Institute of Biochemical Physics RAS
- Moscow 199339
| | - Xiaosheng Fang
- Department of Materials Science
- Fudan University
- Shanghai 200433
- Peoples Republic of China
| | - Anton M. Manakhov
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | - Andrey M. Kovalskii
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | - Andrei T. Matveev
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | - Dmitry V. Shtansky
- National University of Science and Technology “MISIS”
- Moscow 119049
- Russian Federation
| | - Dmitri V. Golberg
- Science and Engineering Faculty
- Queensland University of Technology
- Brisbane
- Australia
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA)
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123
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Ötvös SB, Pálinkó I, Fülöp F. Catalytic use of layered materials for fine chemical syntheses. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02156b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present work reviews the catalytic use of layered solid materials for fine chemical syntheses with focus on layered double hydroxides, but including other classes of layered compounds of catalytic relevance.
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Affiliation(s)
- Sándor B. Ötvös
- Institute of Pharmaceutical Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
- MTA-SZTE Stereochemistry Research Group
| | - István Pálinkó
- Department of Organic Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
- Material and Solution Structure Research Group
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
- MTA-SZTE Stereochemistry Research Group
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124
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Martínez LMT, Kharissova OV, Kharisov BI. Silver Nanoparticles: Synthesis and Applications. HANDBOOK OF ECOMATERIALS 2019. [PMCID: PMC7122521 DOI: 10.1007/978-3-319-68255-6_16] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Nanotechnology involves the production, manipulation, and use of materials ranging in size from less than a micron to that of individual atoms, is an emerging field of modern science, and utilizes nanoscaled systems. Nanoparticles (NPs) are being viewed as fundamental building blocks of nanotechnology. Although nanomaterials may be synthesized using chemical approaches, it is now possible to include the use of biological systems such as bacteria, fungi, and plants. Currently, silver nanoparticles have shown great importance due to its large surface ratio and unique properties with myriad activities applicable in a number of applied sectors including microbial resistant applications (antibacterial/antifungal/anticancer/antiviral), water treatment, protective dressings, catalysis, and optical devices. This chapter encompasses the fabrication methods and dispersed applications of silver nanoparticles.
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Affiliation(s)
- Leticia Myriam Torres Martínez
- Instituto de Ingeniería Civil Facultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León Mexico
| | - Oxana Vasilievna Kharissova
- Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Boris Ildusovich Kharisov
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León UANL, San Nicolás de los Garza, Nuevo León, Mexico
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125
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Yang D, Zhang R, Zhao T, Sun T, Chu X, Liu S, Tang E, Xu X. Efficient reduction of 4-nitrophenol catalyzed by 4-carbo-methoxypyrrolidone modified PAMAM dendrimer–silver nanocomposites. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01655d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Ag–PPDNCs prepared with 4-carbomethoxypyrrolidone modified PAMAM showed very high activity in the reduction of 4-nitrophenol.
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Affiliation(s)
- Desheng Yang
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Rui Zhang
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Ting Zhao
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Tingting Sun
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Xiaomeng Chu
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Shaojie Liu
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Erjun Tang
- College of Chemical & Pharmaceutical Engineering
- Hebei University of Science & Technology
- Shijiazhuang 050018
- P. R. China
| | - Xiaodong Xu
- Hebei Provincial Key Laboratory of Waterborne Coatings
- Hebei Chenyang Industrial & Trade Group Co., Ltd
- Baoding 072550
- P. R. China
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126
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Wang S, Huang H, Tsareva S, Bruneau C, Fischmeister C. Silver-Catalyzed Hydrogenation of Ketones under Mild Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shengdong Wang
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 F-; 35042 Rennes France
| | - Haiyun Huang
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 F-; 35042 Rennes France
| | | | - Christian Bruneau
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 F-; 35042 Rennes France
| | - Cédric Fischmeister
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 F-; 35042 Rennes France
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127
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Pisárčik M, Lukáč M, Jampílek J, Bilka F, Bilková A, Pašková Ľ, Devínsky F, Horáková R, Opravil T. Silver nanoparticles stabilised with cationic single-chain surfactants. Structure-physical properties-biological activity relationship study. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.042] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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128
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Iordanidou D, Zarganes-Tzitzikas T, Neochoritis CG, Dömling A, Lykakis IN. Application of Silver Nanoparticles in the Multicomponent Reaction Domain: A Combined Catalytic Reduction Methodology to Efficiently Access Potential Hypertension or Inflammation Inhibitors. ACS OMEGA 2018; 3:16005-16013. [PMID: 30533584 PMCID: PMC6276200 DOI: 10.1021/acsomega.8b02749] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
The catalytic efficacy of silver nanoparticles was investigated toward the chemoselective reduction of nitro-tetrazole or amino acid-substituted derivatives into the corresponding amines in high isolated yields. This highly efficient protocol was thereafter applied toward the multicomponent reaction synthesis of heterocyclic dihydroquinoxalin-2-ones with high isolated yields. The reaction proceeds with low catalyst loading (0.8-1.4 mol %) and under mild catalytic conditions, a very good functional-group tolerance, and high yields and can be easily scaled up to more than 1 mmol of product. Thus, the present catalytic methodology highlights a useful synthetic application. Different molecules are designed and accordingly synthesized with the current protocol that could play the role of inhibitors of the soluble epoxide hydrolase, an important target for therapies against hypertension or inflammation.
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Affiliation(s)
- Domna Iordanidou
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece
| | - Tryfon Zarganes-Tzitzikas
- Department
of Pharmacy, Drug Design Group, University
of Groningen, A. Deusinglaan 1, Groningen 9713 AV, The Netherlands
| | - Constantinos G. Neochoritis
- Department
of Pharmacy, Drug Design Group, University
of Groningen, A. Deusinglaan 1, Groningen 9713 AV, The Netherlands
| | - Alexander Dömling
- Department
of Pharmacy, Drug Design Group, University
of Groningen, A. Deusinglaan 1, Groningen 9713 AV, The Netherlands
| | - Ioannis N. Lykakis
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece
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129
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Peripherally functionalized based dendrimers as the template for synthesis of silver nanoparticles and investigation the affecting factors on their properties. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2629-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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130
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Kratošová G, Holišová V, Konvičková Z, Ingle AP, Gaikwad S, Škrlová K, Prokop A, Rai M, Plachá D. From biotechnology principles to functional and low-cost metallic bionanocatalysts. Biotechnol Adv 2018; 37:154-176. [PMID: 30481544 DOI: 10.1016/j.biotechadv.2018.11.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 11/21/2018] [Accepted: 11/21/2018] [Indexed: 12/17/2022]
Abstract
Chemical, physical and mechanical methods of nanomaterial preparation are still regarded as mainstream methods, and the scientific community continues to search for new ways of nanomaterial preparation. The major objective of this review is to highlight the advantages of using green chemistry and bionanotechnology in the preparation of functional low-cost catalysts. Bionanotechnology employs biological principles and processes connected with bio-phase participation in both design and development of nano-structures and nano-materials, and the biosynthesis of metallic nanoparticles is becoming even more popular due to; (i) economic and ecologic effectiveness, (ii) simple one-step nanoparticle formation, stabilisation and biomass support and (iii) the possibility of bio-waste valorisation. Although it is quite difficult to determine the precise mechanisms in particular biosynthesis and research is performed with some risk in all trial and error experiments, there is also the incentive of understanding the exact mechanisms involved. This enables further optimisation of bionanoparticle preparation and increases their application potential. Moreover, it is very important in bionanotechnological procedures to ensure repeatability of the methods related to the recognised reaction mechanisms. This review, therefore, summarises the current state of nanoparticle biosynthesis. It then demonstrates the application of biosynthesised metallic nanoparticles in heterogeneous catalysis by identifying the many examples where bionanocatalysts have been successfully applied in model reactions. These describe the degradation of organic dyes, the reduction of aromatic nitro compounds, dehalogenation of chlorinated aromatic compounds, reduction of Cr(VI) and the synthesis of important commercial chemicals. To ensure sustainability, it is important to focus on nanomaterials that are capable of maintaining the important green chemistry principles directly from design inception to ultimate application.
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Affiliation(s)
- Gabriela Kratošová
- Nanotechnology Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic.
| | - Veronika Holišová
- Nanotechnology Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic
| | - Zuzana Konvičková
- ENET Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic
| | - Avinash P Ingle
- Department of Biotechnology, Lorena School of Engineering, University of Sao Paulo, Lorena, Brazil
| | - Swapnil Gaikwad
- Dr. D.Y. Patil Biotechnology and Bioinformatics Institute, Tathawade, Pune, India
| | - Kateřina Škrlová
- Nanotechnology Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic
| | - Aleš Prokop
- Chemical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Mahendra Rai
- Department of Biotechnology, Nanobiotechnology Laboratory, S.G.B. Amravati University, Amravati 444602, Maharashtra, India
| | - Daniela Plachá
- Nanotechnology Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic; ENET Centre, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic
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131
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Chen S, Lucier BEG, Luo W, Xie X, Feng K, Chan H, Terskikh VV, Sun X, Sham TK, Workentin MS, Huang Y. Loading across the Periodic Table: Introducing 14 Different Metal Ions To Enhance Metal-Organic Framework Performance. ACS APPLIED MATERIALS & INTERFACES 2018; 10:30296-30305. [PMID: 30124282 DOI: 10.1021/acsami.8b08496] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Loading metal guests within metal-organic frameworks (MOFs) via secondary functional groups is a promising route for introducing or enhancing MOF performance in various applications. In this work, 14 metal ions (Li+, Na+, K+, Mg2+, Ca2+, Ba2+, Zn2+, Co2+, Mn2+, Ag+, Cd2+, La3+, In3+, and Pb2+) have been successfully introduced within the MIL-121 MOF using a cost-efficient route involving free carboxylic groups on the linker. The local and long-range structure of the metal-loaded MOFs is characterized using multinuclear solid-state NMR and X-ray diffraction methods. Li/Mg/Ca-loaded MIL-121 and Ag nanoparticle-loaded MIL-121 exhibit enhanced H2 and CO2 adsorption; Ag nanoparticle-loaded MIL-121 also demonstrates remarkable catalytic activity in the reduction of 4-nitrophenol.
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Affiliation(s)
- Shoushun Chen
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Bryan E G Lucier
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Wilson Luo
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Xinkai Xie
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , Jiangsu 215123 , P. R. China
| | - Kun Feng
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , Jiangsu 215123 , P. R. China
| | - Hendrick Chan
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Victor V Terskikh
- Department of Chemistry , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Xuhui Sun
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , Jiangsu 215123 , P. R. China
| | - Tsun-Kong Sham
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Mark S Workentin
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
| | - Yining Huang
- Department of Chemistry , University of Western Ontario , London , Ontario N6A 5B7 , Canada
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132
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Nguyen L, Tao PP, Liu H, Al-Hada M, Amati M, Sezen H, Tang Y, Gregoratti L, Tao FF. Studies of surface of metal nanoparticles in a flowing liquid with XPS. Chem Commun (Camb) 2018; 54:9981-9984. [PMID: 30123913 DOI: 10.1039/c8cc03497d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Studying surface of catalyst nanoparticles in a flowing liquid is important for understanding the underlying mechanism of a reaction performed in liquid. We report the design of a reaction cell system of Si3N4 window covering the flowing liquid with an electron-transmissible membrane. By using metal nanoparticles as a catalyst dispersed in a solvent, examination of the surface of catalyst nanoparticles in a flowing liquid was demonstrated by observation of Ag 3d photoemission feature when a liquid containing Ag nanoparticles was flowing through this system.
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Affiliation(s)
- Luan Nguyen
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, USA.
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133
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Cui Y, Xing Z, Yan J, Lu Y, Xiong X, Zheng L. Thermosensitive Behavior and Super-Antibacterial Properties of Cotton Fabrics Modified with a Sercin-NIPAAm-AgNPs Interpenetrating Polymer Network Hydrogel. Polymers (Basel) 2018; 10:E818. [PMID: 30960743 PMCID: PMC6403810 DOI: 10.3390/polym10080818] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/24/2018] [Accepted: 07/24/2018] [Indexed: 01/06/2023] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm), sericin (SS), and silver nitrate were combined to prepare an interpenetrating network (IPN) hydrogel having dual functions of temperature sensitivity and antibacterial properties. The structure and size of AgNPs in such an IPN hydrogel were characterized by the Fourier Transform Infrared spectrum (FT-IR), X-ray powder diffraction (XRD) and Transmission Electron Microscope (TEM), and the thermal properties of the IPN hydrogel were characterized by Differential Scanning Calorimetry (DSC). Based on XRD patterns, Ag⁺ was successfully reduced to Ag⁰ by SS. It was observed by TEM that the particle size of silver particles was lower than 100 nm. The glass transition temperature (Tg) of IPN hydrogel was better than that of the PNIPAAm/AgNPs hydrogels, and lower critical solution temperature (LCST) values of the IPN hydrogel were obtained by DSC i.e. 31 °C. The thermal stability of the IPN hydrogel was successfully determined by the TGA. This IPN hydrogel was then used to modify the cotton fabrics by the "impregnation" method using glutaraldehyde (GA) as the cross-linking agent. The structures and properties of IPN hydrogel modified cotton fabric were characterized by scanning electron microscopy (SEM), FT-IR, and the thermogravimetry analysis (TGA). The results show that NIPAAm was successfully polymerized into PNIPAAm, and that there were neglected new groups in the hydrogel IPN. The IPN hydrogel was then successfully grafted onto cotton fabrics. SEM observations showed that the IPN hydrogel formed a membrane structure between the fibers, and improved the compactness of the fibers. At the temperature close to LCST (≈31 °C), the entire system was easily able to absorb water molecules. However, the hydrophilicity tended to decrease when the temperature was higher or lower than the LCST. The antibacterial rates of the modified cotton fabric against S. aureus and E. coli were as high as 99%.
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Affiliation(s)
- Yifan Cui
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Zijing Xing
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Jun Yan
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Yanhua Lu
- Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China.
| | - Xiaoqing Xiong
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Laijiu Zheng
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
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134
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Cao J, Tian H. N-Heterocyclic Carbene-Protected Ag Nanoparticles Immobilized on Polyacrylonitrile Fiber as Efficient Catalysts for a Three-Component Coupling Reaction. Chem Asian J 2018; 13:1561-1569. [DOI: 10.1002/asia.201800154] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/02/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Jian Cao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine; Chinese Academy of Medical Science and Peking Union Medical College; Tianjin 300192 China
| | - Hongqi Tian
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine; Chinese Academy of Medical Science and Peking Union Medical College; Tianjin 300192 China
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135
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Russo M, Chillura Martino D, Caponetti E, Lo Meo P. Convenient Photochemical Synthesis of Silver-Polyaminocyclodextrin Nanocomposites: The Role of the Light Source from a Mechanistic Viewpoint. ChemistrySelect 2018. [DOI: 10.1002/slct.201703098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marco Russo
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17 - 90128 Palermo Italy
| | - Delia Chillura Martino
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17 - 90128 Palermo Italy
- Centro Grandi Apparecchiature - AteNCenter; University of Palermo; Via Filippo Marini, 14 - 90128 Palermo Italy
| | - Eugenio Caponetti
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17 - 90128 Palermo Italy
- Centro Grandi Apparecchiature - AteNCenter; University of Palermo; Via Filippo Marini, 14 - 90128 Palermo Italy
| | - Paolo Lo Meo
- Department STEBICEF; University of Palermo; V.le delle Scienze pad. 17 - 90128 Palermo Italy
- CHAB - AteNCenter; University of Palermo; V.le delle Scienze pad. 18 - 90128 Palermo Italy
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136
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Li W, Li CF, Lang F, Jiu J, Ueshima M, Wang H, Liu ZQ, Suganuma K. Self-catalyzed copper-silver complex inks for low-cost fabrication of highly oxidation-resistant and conductive copper-silver hybrid tracks at a low temperature below 100 °C. NANOSCALE 2018; 10:5254-5263. [PMID: 29498383 DOI: 10.1039/c7nr09225c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cu-Ag complex inks are developed for printing conductive tracks of low cost, high stability, and high conductivity on heat-sensitive substrates such as polyethylene terephthalate (PET) substrates. The inks show an obvious self-catalyzed characteristic due to the in situ formation of fresh metal nanoparticles which promote rapid decomposition and sintering of the inks at a low temperature below 100 °C. The temperature is 40-60 °C lower than those of general Cu complex inks and 100-120 °C lower than those of general Cu/Ag particle inks. Highly conductive Cu-Ag tracks of 2.80 × 10-5 Ω cm and 6.40 × 10-5 Ω cm have been easily realized at 100 °C and 80 °C, respectively. In addition, the printed Cu-based tracks not only show high oxidation resistance at high temperatures of up to 140 °C (the maximum tolerable temperature of current PET substrate) but also show excellent stability at high humidity of 85% because of the very uniform Cu-Ag hybrid structure. The printable tracks exhibit great potential application in various wearable devices fabricated on textiles, papers, and other heat-sensitive substrates.
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Affiliation(s)
- Wanli Li
- Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, Japan.
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137
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Mourya M, Choudhary D, Basak AK, Tripathi CSP, Guin D. Ag-Nanoparticles-Embedded Filter Paper: An Efficient Dip Catalyst for Aromatic Nitrophenol Reduction, Intramolecular Cascade Reaction, and Methyl Orange Degradation. ChemistrySelect 2018. [DOI: 10.1002/slct.201702609] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mohini Mourya
- Department of Chemistry; University of Rajasthan; JLN Marg Jaipur-302004 Rajasthan India
| | - Deepika Choudhary
- Department of Chemistry; University of Rajasthan; JLN Marg Jaipur-302004 Rajasthan India
| | - Ashok Kumar Basak
- Department of Chemistry; University of Rajasthan; JLN Marg Jaipur-302004 Rajasthan India
| | | | - Debanjan Guin
- Department of Chemistry; University of Rajasthan; JLN Marg Jaipur-302004 Rajasthan India
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138
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Madhavan S, Okamoto S. Silica-Supported Silver as a Green and Sustainable Catalyst for the [3+2]-Cycloaddition Reaction of Azomethine Ylides with 2′-Hydroxychalcone Derivatives. ChemCatChem 2018. [DOI: 10.1002/cctc.201702035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Suchithra Madhavan
- Department of Materials and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Sentaro Okamoto
- Department of Materials and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
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139
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Kaloti M, Kumar A. Sustainable Catalytic Activity of Ag-Coated Chitosan-Capped γ-Fe 2O 3 Superparamagnetic Binary Nanohybrids (Ag-γ-Fe 2O 3@CS) for the Reduction of Environmentally Hazardous Dyes-A Kinetic Study of the Operating Mechanism Analyzing Methyl Orange Reduction. ACS OMEGA 2018; 3:1529-1545. [PMID: 31458478 PMCID: PMC6641453 DOI: 10.1021/acsomega.7b01498] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/19/2018] [Indexed: 05/17/2023]
Abstract
The formation of binary nanohybrids consisting of environmentally benign components, γ-Fe2O3, chitosan (CS), and Ag (Ag-γ-Fe2O3@CS) (CSIOAg), containing very low concentration of Ag NPs (≤1.2 μM), has been reported. In the as-synthesized nanohybrids, the presence of γ-Fe2O3 (8.5 ± 0.8 nm) and Ag (5.9 ± 0.5 nm) are revealed by optical, XRD, TEM, and XPS analyses, and their presence in cubic phase is determined by XRD and SAED measurements. The catalytic activity of CSIOAg has been analyzed by performing the reduction of certain toxic dyes. Under all kinetic conditions, the reaction is attended by an induction period, which is reduced upon increasing [Ag] and [Dye] in a specific concentration range, as well as temperature, suggesting restructuring of the surface prior to reduction. In case of methyl orange (MO), the reduction results in its cleavage to produce N,N-dimethyl-1,4-phenylenediamine and sodium sulfanilate in a significantly higher (>97%) yield in a bimolecular reaction between MO and BH4 -. The duration of induction period is regularly decreased and the rate of reduction (k app) increases linearly with increasing Ag in the wide concentration range (0.03-2.4 μM). The reduction takes place with a second-order rate constant of 2.7 × 104 dm3 mol-1 s-1, which is >3.5-fold higher than that in the absence of chitosan (IOAg) under identical experimental conditions. The kinetics of reduction of MO is controlled by the nature and extent of its adsorption on the catalyst surface. The weaker binding between MO and Ag catalyst only allows its effective reduction. The XPS analysis of CSIOAg and IOAg containing the same amount of Ag (1.2 μM) showed its higher amount on the surface of CSIOAg (0.12%) as compared to that of IOAg (0.09%). Detailed kinetic analysis of MO reduction, performed under pseudo-kinetic conditions for both the nanohybrids revealed them to follow Langmuir-Hinshelwood kinetic model and exhibited the recyclability up to 10 cycles with fairly high reaction efficiency and TOF, suggesting it to be a sustainable green nanosystem.
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Affiliation(s)
- Mandeep Kaloti
- Centre
of Excellence—Nanotechnology, Indian
Institute of Technology Roorkee, Roorkee-247667, India
- Department
of Chemistry, Indian Institute of Technology
Roorkee, Roorkee-247667, India
| | - Anil Kumar
- Centre
of Excellence—Nanotechnology, Indian
Institute of Technology Roorkee, Roorkee-247667, India
- Department
of Chemistry, Indian Institute of Technology
Roorkee, Roorkee-247667, India
- E-mail: ; . Tel: +91-1332-285799
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140
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Heidari H. Ag Nanoparticle/Nanofibrillated Cellulose Composite as an Effective and Green Catalyst for Reduction of 4-Nitrophenol. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1351-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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141
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Barbosa ECM, Fiorio JL, Mou T, Wang B, Rossi LM, Camargo PHC. Reaction Pathway Dependence in Plasmonic Catalysis: Hydrogenation as a Model Molecular Transformation. Chemistry 2018; 24:12330-12339. [DOI: 10.1002/chem.201705749] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Eduardo C. M. Barbosa
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Jhonatan L. Fiorio
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Tong Mou
- Center for Interfacial Reaction Engineering and School of Chemical, Biological, and Materials Engineering, Gallogly College of Engineering; The University of Oklahoma; Norman OK USA
| | - Bin Wang
- Center for Interfacial Reaction Engineering and School of Chemical, Biological, and Materials Engineering, Gallogly College of Engineering; The University of Oklahoma; Norman OK USA
| | - Liane M. Rossi
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Pedro H. C. Camargo
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
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142
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Saha TK, Das R. Progress in Synthesis of Propargylamine and Its Derivatives by Nanoparticle Catalysis via A3 coupling: A Decade Update. ChemistrySelect 2018. [DOI: 10.1002/slct.201702454] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Tanmoy Kumar Saha
- Department of Chemistry; National Institute of Technology Durgapur; M.G Avenue Durgapur, West Bengal India. Pin- 713209
| | - Rima Das
- Department of Chemistry, Chandidas Mahavidyalaya, Khujutipara; Birbhum, West Bengal India. Pin- 731215
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143
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Mishura AM, Lytvynenko AS, Gavrilenko KS, Baranchikov AE, Grabovaya NV, Kiskin MA, Kolotilov SV. Formation of hierarchically-ordered nanoporous silver foam and its electrocatalytic properties in reductive dehalogenation of organic compounds. NEW J CHEM 2018. [DOI: 10.1039/c8nj03460e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanostructuring of silver notably improved its electrocatalytic activity in reductive dehalogenation of a variety of aryl and alkyl bromides.
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Affiliation(s)
- Andrey M. Mishura
- L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine
- Kiev
- Ukraine
| | - Anton S. Lytvynenko
- L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine
- Kiev
- Ukraine
| | - Konstantin S. Gavrilenko
- Research-And-Education ChemBioCenter
- National Taras Shevchenko University of Kyiv
- Kiev
- Ukraine
- Enamine Ltd
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Natalia V. Grabovaya
- L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine
- Kiev
- Ukraine
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Sergey V. Kolotilov
- L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine
- Kiev
- Ukraine
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144
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Goldani B, do Sacramento M, Lenardão EJ, Schumacher RF, Barcellos T, Alves D. Synthesis of symmetrical and unsymmetrical tellurides via silver catalysis. NEW J CHEM 2018. [DOI: 10.1039/c8nj01998c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The cross-coupling reaction of diaryl ditellurides with aryl boronic acids is described using AgNO3 as a catalyst.
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Affiliation(s)
- Bruna Goldani
- Laboratório de Síntese Orgânica Limpa
- LASOL
- CCQFA
- Universidade Federal de Pelotas
- UFPel
| | | | - Eder J. Lenardão
- Laboratório de Síntese Orgânica Limpa
- LASOL
- CCQFA
- Universidade Federal de Pelotas
- UFPel
| | | | - Thiago Barcellos
- Laboratory of Biotechnology of Natural and Synthetic Products, University of Caxias do Sul
- Caxias do Sul
- Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa
- LASOL
- CCQFA
- Universidade Federal de Pelotas
- UFPel
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145
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Wu KJ, Torrente-Murciano L. Continuous synthesis of tuneable sized silver nanoparticles via a tandem seed-mediated method in coiled flow inverter reactors. REACT CHEM ENG 2018. [DOI: 10.1039/c7re00194k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size control of metal nanoparticles is essential to achieve accurate adjustment of their unique chemical and physical properties.
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Affiliation(s)
- Ke-Jun Wu
- Department of Chemical Engineering and Biotechnology
- Philippa Fawcett Drive
- University of Cambridge
- Cambridge
- UK
| | - Laura Torrente-Murciano
- Department of Chemical Engineering and Biotechnology
- Philippa Fawcett Drive
- University of Cambridge
- Cambridge
- UK
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146
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Ötvös SB, Mészáros R, Varga G, Kocsis M, Kónya Z, Kukovecz Á, Pusztai P, Sipos P, Pálinkó I, Fülöp F. A mineralogically-inspired silver–bismuth hybrid material: an efficient heterogeneous catalyst for the direct synthesis of nitriles from terminal alkynes. GREEN CHEMISTRY 2018. [DOI: 10.1039/c7gc02487h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A silver-containing hybrid material is reported as an effective heterogeneous catalyst for the direct synthesis of organic nitriles from terminal alkynes.
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147
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Jiang Q, Yu S, Li X, Ma C, Li A. Evaluation of local anesthetic effects of Lidocaine-Ibuprofen ionic liquid stabilized silver nanoparticles in Male Swiss mice. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 178:367-370. [PMID: 29190552 DOI: 10.1016/j.jphotobiol.2017.11.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/16/2017] [Accepted: 11/20/2017] [Indexed: 11/26/2022]
Abstract
A simple approach for the synthesis of Lidocaine-Ibuprofen ionic liquid stabilized silver nanoparticles (IL-AgNPs) was reported in this work. The shape, size and surface morphology of the Lidocaine-Ibuprofen ionic liquid stabilized AgNPs were characterized by using spectroscopic and microscopic techniques such as Ultraviolet-visible spectroscopy (UV-Visible), X-ray diffraction (XRD) analysis, Selected area electron diffraction (SAED), Transmission electron microscopy (TEM). TEM analysis showed the formation of 20-30nm size of IL-AgNPs with very clear lattice fringes. SAED pattern confirmed the highly crystalline nature of fabricated IL stabilized AgNPs. EDS results confirmed the formation of nanosilver. The fabricated IL-AgNPs were studied for their local anesthetic effect in rats. The results of local anesthetic effect showed that the time for onset of action by IL-AgNPs is 10min, which is significantly higher than that for EMLA. Further, tactile test results confirmed the stronger and faster local anesthetic effect of IL-AgNPs when compared to that of EMLA.
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Affiliation(s)
- Qiliang Jiang
- Department of Anesthesiology, Huaihe Hospital of Henan University, Kaifeng, Henan, China
| | - Shashuang Yu
- Department of Anesthesiology, Huaihe Hospital of Henan University, Kaifeng, Henan, China
| | - Xingwang Li
- Department of Anesthesiology, Huaihe Hospital of Henan University, Kaifeng, Henan, China
| | - Chuangen Ma
- Department of Anesthesiology, Huaihe Hospital of Henan University, Kaifeng, Henan, China.
| | - Aixiang Li
- Department of Anesthesiology, Huaihe Hospital of Henan University, Kaifeng, Henan, China
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148
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Khan TM, Mujawar MA, Siewerska KE, Pokle A, Donnelly T, McEvoy N, Duesberg GS, Lunney JG. Atmospheric pulsed laser deposition and thermal annealing of plasmonic silver nanoparticle films. NANOTECHNOLOGY 2017; 28:445601. [PMID: 28884710 DOI: 10.1088/1361-6528/aa8b32] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new method for pulsed laser deposition of plasmonic silver nanoparticle (NP) films in flowing gas at atmospheric pressure is described. The ablation was done using an excimer laser at 248 nm. Fast optical imaging shows that the ablation plume is captured by the flowing gas, and is expected to form a NP aerosol, which is carried 5-20 mm to the substrate. The dependence of the deposition rate on laser fluence, gas flow velocity, and target-substrate distance was investigated using electron microscopy and absorption spectroscopy of the deposited films. The NP films were annealed in argon and hydrogen at 400 °C, and in air for temperatures in the range 200 °C-900 °C, leading to strong enhancement, and narrowing of the surface plasmon resonance. The films were used for surface enhanced Raman spectroscopy of a 10-5 molar solution of Rhodamine 6G; films annealed in air at 400 °C were five times more sensitive than the as-deposited films.
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Affiliation(s)
- T M Khan
- School of Physics and CRANN, Trinity College Dublin, the University of Dublin, Dublin 2, Ireland
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149
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Chai SH, Wang Y, Qiao Y, Wang P, Li Q, Xia C, Ju M. Bio fabrication of silver nanoparticles as an effective wound healing agent in the wound care after anorectal surgery. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 178:457-462. [PMID: 29223119 DOI: 10.1016/j.jphotobiol.2017.10.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 10/14/2017] [Accepted: 10/26/2017] [Indexed: 10/18/2022]
Abstract
Nowadays biological mediated syntheses of metal nanoparticles were utilized for various life caring applications. Our research group utilized Delonix elata leaf aqueous extract for the synthesis of silver nanoparticles. Further the synthesized silver nanoparticles were subjected for various characterization techniques which resulted in spherically agglomerated with biological components entrapped in it and also with average particle size of 36nm were studied and reported. Later the synthesized silver nanoparticles were subjected for wound healing property by size of measured lessions and body weight which results in better wound healing property were studied and discussed.
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Affiliation(s)
- Shi-Hong Chai
- Department of General Surgery, Linyi Center Hospital, Linyi 276400, Shandong, China
| | - Yating Wang
- Department of Anus & Intestine Surgery, Liaocheng People's Hospital, China.
| | - Yinghong Qiao
- Department of Anus & Intestine Surgery, Liaocheng People's Hospital, China
| | - Pei Wang
- Liaocheng Dongchangfu District Maternal and Child Health Hospital, China
| | - Qiang Li
- Department of Anus & Intestine Surgery, Liaocheng People's Hospital, China
| | - Chaofeng Xia
- Department of Anus & Intestine Surgery, Liaocheng People's Hospital, China
| | - Man Ju
- Department of Anus & Intestine Surgery, Liaocheng People's Hospital, China
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150
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Pisárčik M, Jampílek J, Lukáč M, Horáková R, Devínsky F, Bukovský M, Kalina M, Tkacz J, Opravil T. Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length. Molecules 2017; 22:molecules22101794. [PMID: 29065563 PMCID: PMC6151783 DOI: 10.3390/molecules22101794] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 10/18/2017] [Accepted: 10/18/2017] [Indexed: 11/16/2022] Open
Abstract
The present study is focused on the synthesis and investigation of the physicochemical and biological properties of silver nanoparticles stabilized with a series of cationic gemini surfactants having a polymethylene spacer of variable length. UV-VIS spectroscopy, dynamic light scattering, scanning electron microscopy and zeta potential measurements were applied to provide physicochemical characterization of the silver nanoparticles. The mean size values of the nanoparticles were found to be in the 50 to 115 nm range. From the nanoparticle size distributions and scanning electron microscopy images it results that a population of small nanoparticles with the size of several nanometers was confirmed if the nanoparticles were stabilized with gemini molecules with either a short methylene spacer (two or four −CH2− groups) or a long spacer (12 −CH2− groups). The average zeta potential value for silver nanoparticles stabilized with gemini molecules is roughly independent of gemini surfactant spacer length and is approx. +58 mV. An interaction model between silver nanoparticles and gemini molecules which reflects the gained experimental data, is suggested. Microbicidal activity determinations revealed that the silver nanoparticles stabilized with gemini surfactants are more efficient against Gram-negative bacteria and yeasts, which has a direct relation to the interaction mechanism of nanoparticles with the bacterial cell membrane and its structural composition.
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Affiliation(s)
- Martin Pisárčik
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinčiakova 8, Bratislava SK-83232, Slovakia.
| | - Josef Jampílek
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Bratislava SK-83232, Slovakia.
| | - Miloš Lukáč
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinčiakova 8, Bratislava SK-83232, Slovakia.
| | - Renáta Horáková
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinčiakova 8, Bratislava SK-83232, Slovakia.
| | - Ferdinand Devínsky
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinčiakova 8, Bratislava SK-83232, Slovakia.
- Faculty of Pharmacy, Comenius University, Kalinčiakova 8, Bratislava SK-83232, Slovakia.
| | - Marián Bukovský
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, Bratislava SK-83232, Slovakia.
| | - Michal Kalina
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, CZ-61200 Brno, Czech Republic.
| | - Jakub Tkacz
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, CZ-61200 Brno, Czech Republic.
| | - Tomáš Opravil
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, CZ-61200 Brno, Czech Republic.
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