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Nam JH, Nayak G, Exarhos S, Mueller CM, Xu D, Schatz GC, Bruggeman PJ. Mechanisms of controlled stabilizer-free synthesis of gold nanoparticles in liquid aerosol containing plasma. Chem Sci 2024; 15:11643-11656. [PMID: 39055030 PMCID: PMC11268499 DOI: 10.1039/d4sc01192a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 06/09/2024] [Indexed: 07/27/2024] Open
Abstract
The interaction between low-temperature plasma and liquid enables highly reactive solution phase chemistry and fast reaction kinetics. In this work, we demonstrate the rapid synthesis of stabilizer-free, spherical and crystalline gold nanoparticles (AuNP). More than 70% of gold ion complex (AuCl- 4) conversion is achieved within a droplet residence time in the plasma of ∼10 ms. The average size of the AuNPs increases with an increase in the droplet residence time and the particle synthesis showed a power threshold effect suggesting the applicability of the classical nucleation theory. Leveraging UV-vis absorption and emission spectroscopy, and nanoparticle size distributions obtained from TEM measurements, we showed that the AuCl- 4 conversion exceeded by 250 times the maximum faradaic efficiency. We identified important roles of both short-lived reducing species including solvated electrons and possibly vacuum ultraviolet (VUV) photons, and long-lived species, H2O2, in the reduction of AuCl- 4. A quantitative investigation was performed by a 1-D reaction-diffusion model which includes transport, plasma-enabled interfacial reduction of AuCl- 4, classical nucleation, monomer absorption and autocatalytic surface growth enabled by H2O2. The model shows good agreement with the experimental results. The timescale analysis of the simulation revealed that nucleation is enabled by fast reduction of gold ions, and autocatalytic growth mainly determines the particle size and is responsible for the majority of the ion precursor conversion while also explaining the excessively large faradaic efficiency found experimentally.
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Affiliation(s)
- Jae Hyun Nam
- Department of Mechanical Engineering, University of Minnesota Minneapolis MN-55455 USA
| | - Gaurav Nayak
- Department of Mechanical Engineering, University of Minnesota Minneapolis MN-55455 USA
| | - Stephen Exarhos
- Department of Mechanical Engineering, University of Minnesota Minneapolis MN-55455 USA
| | - Chelsea M Mueller
- Department of Chemistry, Northwestern University Evanston IL-60208 USA
| | - Dongxuan Xu
- Department of Mechanical Engineering, University of Minnesota Minneapolis MN-55455 USA
| | - George C Schatz
- Department of Chemistry, Northwestern University Evanston IL-60208 USA
| | - Peter J Bruggeman
- Department of Mechanical Engineering, University of Minnesota Minneapolis MN-55455 USA
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2
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Takayanagi T, Miyake K, Iwasaki S, Uehara D, Mizuguchi H, Okabe H, Matsuda N. Highly stable gold nanoparticles in an aqueous solution without any stabilizer prepared by a solution plasma process evaluated through capillary zone electrophoresis. ANAL SCI 2022; 38:1199-1206. [PMID: 35788911 DOI: 10.1007/s44211-022-00149-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/07/2022] [Indexed: 11/30/2022]
Abstract
Gold nanoparticles (AuNP) were prepared by a solution plasma process in the presence of H2O2, and they were dispersed in an aqueous solution without any stabilizer generally used. The dispersion stability of the AuNP in an aqueous solution was evaluated by capillary zone electrophoresis (CZE). An anionic broad peak was detected with the AuNP by CZE based on its wide variations in size and net charge. The broad peak also suggests that the AuNP were well dispersed in an aqueous solution. The dispersion stability of AuNP was evaluated from the viewpoints of long-term dispersion, salt concentration, and organic co-solvent. The anionic broad peak attributed to the dispersed AuNP was successfully detected for at least 55 weeks from the preparation with less shot signals of the aggregates. The AuNP was also well dispersed in aqueous NaCl solutions with its concentrations up to 30 mmol L-1, as well as with ethanol co-solvent up to 40%(v/v). The AuNP prepared by the solution plasma process was proved to be highly stable in an aqueous solution.
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Affiliation(s)
- Toshio Takayanagi
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijyousanjima-cho, Tokushima, 770-8506, Japan.
| | - Koji Miyake
- Raduate School of Sciences and Technology for Innovation, Tokushima University, 2-1 Minamijyousanjima-cho, Tokushima, 770-8506, Japan
| | - Sohta Iwasaki
- Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minamijyousanjima-cho, Tokushima, 770-8506, Japan
| | - Daiki Uehara
- Department of Science and Technology, Faculty of Science and Technology, Tokushima University, 2-1 Minamijyousanjima-cho, Tokushima, 770-8506, Japan
| | - Hitoshi Mizuguchi
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijyousanjima-cho, Tokushima, 770-8506, Japan
| | - Hirotaka Okabe
- Sensing System Research Center, National Institute of Advanced Industrial Science and Technology, 807-1 Shukumachi, Tosu, Saga, 841-0052, Japan
| | - Naoki Matsuda
- Sensing System Research Center, National Institute of Advanced Industrial Science and Technology, 807-1 Shukumachi, Tosu, Saga, 841-0052, Japan.
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3
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Chowdhury NK, Choudhury R, Gogoi B, Chang CM, Pandey RP. Microbial synthesis of gold nanoparticles and their application. Curr Drug Targets 2022; 23:752-760. [PMID: 35088666 DOI: 10.2174/1389450123666220128152408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/02/2021] [Accepted: 07/27/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Nanoparticles play a very important role in our daily lives and have a wide range of applications in agriculture and the field of biology such as antioxidants and antimicrobial compounds. Among them are gold nanoparticles (AuNPs) that are highly complex and widely used. In recent years gold nanoparticles have attracted much attention because of their optical properties, electronic, physicochemical and surface Plasmon resonance (SPR). Gold plated nanoparticles, similar to metal nanoparticles, have many unusual chemical and physical properties due to the effects of their quantum size and location, compared to other iron or metal atoms. Gold nanoparticles can be used in pharmaceutical products such as antimicrobial and anti-biofilm agents, targeted delivery of anti-cancer drugs, biosensors, biocatalysis, bioremediation modification of toxic chemicals exposing the soil and atmosphere, dye reduction etc. Yet such methods are expensive and out of harmony with nature. In that account the microbes mediated synthesis of gold nanoparticles changed rapidly recently when pure microbes are ac-friendly, non-toxic and bio compatible as physiological and chemical methods. This document aims to review the progress made in recent years with the fusion of gold nanoparticles. Microbial source includes bacteria, algae fungi. These works motivate the people for how to apply and synthesize of gold nanoparticles. This review also focuses on the process of classification of gold nanoparticles, structures and their use in the development of various requirements. OBJECTIVE The main goal is to study about the gold nanoparticles and their application in future. METHODS We study different research paper, review paper from "Google Scholar", "NCBI", "PubMed", "Science Direct" and then we making our review paper. CONCLUSION Metal nanoparticles are suitable for many emerging technologies. Understanding the microorganisms found in nature because the fusion of gold nanoparticles is required.
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Affiliation(s)
| | - Reshma Choudhury
- Department of Biotechnology, Royal Global University, Guwahati, Assam, India
| | - Bhoirob Gogoi
- Department of Microbiology, Assam University, Silchar, Assam, India
| | - Chung-Ming Chang
- Master & Ph.D. program in Biotechnology Industry, Chang Gung University, No.259, Wenhua 1st Rd., Guishan Dist
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4
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Szymczyk K, Zdziennicka A, Jańczuk B. Properties of some nonionic fluorocarbon surfactants and their mixtures with hydrocarbon ones. Adv Colloid Interface Sci 2021; 292:102421. [PMID: 33957391 DOI: 10.1016/j.cis.2021.102421] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/13/2021] [Accepted: 04/13/2021] [Indexed: 02/07/2023]
Abstract
The adsorption of Zonyl FSN-100 (FSN100, having an average 14 oxyethylene units and 6 -CF2 groups) and Zonyl FSO-100 (FSO100, having an average 10 oxyethylene units and 5 -CF2 groups) as well as of their mixtures with p-(1,1,3,3-tetramethylbutyl) phenoxypoly(ethylene glycols) having 10, 16 and 8 oxyethylene groups in molecule (TX100, TX165, TX114) and cetyltrimethylammonium bromide (CTAB) at the solution-air and polytetrafluoroethylene (PTFE)-solution and polymethyl methacrylate (PMMA)-solution interfaces as well as the composition of the surface mixed layer was discussed based on the literature data. The adsorption properties of nonionic fluorocarbon surfactants were compared to those of the classical ones on the basis of the Gibbs standard free energy of adsorption determined by different ways and the intermolecular interactions of the surfactant molecules through the water phase. The synergetic effect in the reduction of the water surface tension by the mixture of fluorocarbon and classical nonionic surfactant was shown and explained by the comparison of the composition of the mixed surface layer to those in the bulk phase. The composition of the mixed fluorocarbon and classical surfactant layer at the solution-air interface was compared to that formed at the PTFE-solution and PMMA-solution interfaces. The changes of the surface tension of the aqueous solution of the fluorocarbon surfactants and their mixtures with classical hydrocarbon ones and their adsorption were analyzed taking into account the PTFE and PMMA surface wettability. This analysis was also based on the components and parameters of the head and tail of the surfactants surface tension as well as those of PTFE and PMMA. Apart from adsorption and wetting properties the aggregation of the fluorocarbon surfactants and their mixtures was discussed. A specific attention was paid to the possibility of two CMC values in the case of nonionic fluorocarbon surfactants as well as the synergism in CMC of mixtures of nonionic fluorocarbon and hydrocarbon surfactants.
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Affiliation(s)
- Katarzyna Szymczyk
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
| | - Anna Zdziennicka
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
| | - Bronisław Jańczuk
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
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5
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Chandran K, Song S, Yun SI. Effect of size and shape controlled biogenic synthesis of gold nanoparticles and their mode of interactions against food borne bacterial pathogens. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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6
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Anisotropic Gold Nanoparticle-Cell Interactions Mediated by Collagen. MATERIALS 2019; 12:ma12071131. [PMID: 30959932 PMCID: PMC6480049 DOI: 10.3390/ma12071131] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 11/17/2022]
Abstract
Gold nanoparticles (AuNPs) are the groundwork of a large variety of applications in the biomedical field. Further development and a better understanding of this versatile platform will lead to an expansion of potential applications. In this study, we propose a facile synthesis of AuNPs using hydrogen peroxide as a reducing agent and collagen as a stabilizing agent. Our synthetic approach results in "raspberry"-like AuNPs with a mean diameter of 60 nm, as revealed by electron microscopy. The optical properties of the AuNPs were assessed by UV-Vis and surface-enhanced Raman scattering (SERS), and their stability and in vitro cytotoxicity were evaluated as well. HeLa cell viability values were only modestly affected compared to control, with the highest concentration tested displaying a 20% decrease in cellular viability. The dose-dependent cellular internalization in the 20⁻60 nM range indicate the highest internalization rate at 60 nM and uptake values as high as 35%. This result correlated well with the viability results. These type of anisotropic AuNPs are proposed for biomedical applications such as hyperthermia, contrast agents or imaging. Therefore, our findings offer a platform for potential biological applications such as sensing and imaging, due to their unique physico-chemical features.
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7
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Gemini pyridinium amphiphiles for the synthesis and stabilization of gold nanoparticles for drug delivery. J Colloid Interface Sci 2017; 502:172-183. [DOI: 10.1016/j.jcis.2017.04.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/05/2017] [Accepted: 04/07/2017] [Indexed: 01/29/2023]
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8
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Tangeysh B, Tibbetts KM, Odhner JH, Wayland BB, Levis RJ. Gold Nanotriangle Formation through Strong-Field Laser Processing of Aqueous KAuCl 4 and Postirradiation Reduction by Hydrogen Peroxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:243-252. [PMID: 27983860 DOI: 10.1021/acs.langmuir.6b03812] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Femtosecond laser irradiation of aqueous KAuCl4 followed by postirradiation reduction with hydrogen peroxide (H2O2) is investigated as a new approach for the synthesis of gold nanotriangles (AuNTs) without any added surfactant molecules. Laser irradiation was applied for times ranging from 5 to 240 s, and postirradiation reduction of the solutions was monitored by UV-vis spectroscopy. Laser processing of aqueous KAuCl4 for 240 s, where the full reduction of Au(III) occurred during irradiation, produced spherical gold nanoparticles (AuNPs) with an average size of 11.4 ± 3.4 nm. Irradiation for shorter times (i.e., 15 s) resulted in the formation of laser-generated AuNP seeds (5.7 ± 1.8 nm) in equilibrium with unreacted KAuCl4 after termination of laser irradiation. The postirradiation reduction of these solutions by H2O2 produced a mixture of spherical and triangular AuNPs. Decreasing the laser irradiation time from 45 to 5 s significantly reduced the number of laser-generated Au seeds, the amount of H2O2 produced, and the rate of postirradiation reduction, resulting in the formation of a large number of AuNTs with sizes increasing from 29.5 ± 10.2 to 125 ± 43.2 nm. Postirradiation reduction is kinetically inhibited in the absence of laser-generated AuNP seeds.
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Affiliation(s)
- Behzad Tangeysh
- Department of Chemistry and the Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States
| | - Katharine Moore Tibbetts
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284, United States
| | - Johanan H Odhner
- Department of Chemistry and the Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States
| | - Bradford B Wayland
- Department of Chemistry and the Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States
| | - Robert J Levis
- Department of Chemistry and the Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States
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9
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West AL, Schaeublin NM, Griep MH, Maurer-Gardner EI, Cole DP, Fakner AM, Hussain SM, Karna SP. In situ Synthesis of Fluorescent Gold Nanoclusters by Nontumorigenic Microglial Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21221-21227. [PMID: 27328035 DOI: 10.1021/acsami.6b06624] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
To date, the directed in situ synthesis of fluorescent gold nanoclusters (AuNCs) has only been demonstrated in cancerous cells, with the theorized synthesis mechanism prohibiting AuNC formation in nontumorigenic cell lines. This limitation hinders potential biostabilized AuNC-based technology in healthy cells involving both chemical and mechanical analysis, such as the direct sensing of protein function and the elucidation of local mechanical environments. Thus, new synthesis strategies are required to expand the application space of AuNCs beyond cancer-focused cellular studies. In this contribution, we have developed the methodology and demonstrated the direct in situ synthesis of AuNCs in the nontumorigenic neuronal microglial line, C8B4. The as-synthesized AuNCs form in situ and are stabilized by cellular proteins. The clusters exhibit bright green fluorescence and demonstrate low (<10%) toxicity. Interestingly, elevated ROS levels were not required for the in situ formation of AuNCs, although intracellular reductants such as glutamate were required for the synthesis of AuNCs in C8B4 cells. To our knowledge, this is the first-ever demonstration of AuNC synthesis in nontumorigenic cells and, as such, it considerably expands the application space of biostabilized fluorescent AuNCs.
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Affiliation(s)
| | - Nicole M Schaeublin
- Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | | | - Elizabeth I Maurer-Gardner
- Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | | | | | - Saber M Hussain
- Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
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10
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Pangdam A, Nootchanat S, Ishikawa R, Shinbo K, Kato K, Kaneko F, Thammacharoen C, Ekgasit S, Baba A. Effect of urchin-like gold nanoparticles in organic thin-film solar cells. Phys Chem Chem Phys 2016; 18:18500-6. [PMID: 27338656 DOI: 10.1039/c6cp02373h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UNLABELLED In this study, urchin-like gold nanoparticles (UL-AuNPs) are used in the fabrication of organic thin-film solar cells (OSCs). UL-AuNPs, which have gold nanothorns on their surface, enhance light accumulation by acting as light-trapping materials. This is due to the enhanced electric field and light scattering attributed to the nanothorns on the surface of the nanoparticles. UL-AuNPs were incorporated into a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) ( PEDOT PSS) thin-film layer of organic thin-film solar cells (OSCs). UV-vis spectra, atomic force microscopy (AFM) images, current density versus voltage properties, and the impedance spectra of the fabricated devices were recorded at various concentrations of UL-AuNPs. We found that the efficiency of the OSCs with UL-AuNPs was not only higher than that of a reference cell without nanoparticles but also higher than that of OSCs with spherical AuNPs. Finite-difference time-domain (FDTD) simulation indicated that the electric field around the UL-AuNPs increased due to the presence of nanothorns.
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Affiliation(s)
- Apichat Pangdam
- Graduate School of Science and Technology, Niigata University, 8050, Ikarashi 2-nocho, Nishi-ku, Niigata 950-2181, Japan.
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11
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Wang SN, Lan L, Hua WB, Shi ZH, Chen YQ, Gong MC, Zhong L. Ce-Zr-La/Al2O3 prepared in a continuous stirred-tank reactor: a highly thermostable support for an efficient Rh-based three-way catalyst. Dalton Trans 2015; 44:20484-92. [PMID: 26542766 DOI: 10.1039/c5dt02917a] [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]
Abstract
Two Ce-Zr-La/Al2O3 composite oxides, CZLA-C and CZLA-B, were synthesized using a co-precipitation method in a continuous stirred-tank reactor (CSTR) and a batch reactor (BR), respectively. Two Rh-based three-way catalysts (TWCs), Rh/CZLA-C and Rh/CZLA-B were obtained by a wet-impregnation method using the two composites as the supports. The physicochemical properties of the samples before and after thermal treatment at 1000 °C were characterized by N2 adsorption-desorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), H2-temperature programmed reduction (H2-TPR) and CO chemisorption. The results indicated that CZLA-C shows higher thermal stability than CZLA-B due to a sparsely-agglomerated morphology. Compared with Rh/CZLA-B, Rh/CZLA-C displayed better reducibility and higher thermal stability and exhibited significantly higher activity in the catalytic removal of the simulated gasoline vehicle exhaust emission (NO, CO and C3H8). Our work can provide a facile and economical synthesis route to advanced support materials and catalysts for exhaust emission control.
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Affiliation(s)
- Su-Ning Wang
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610064, China.
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12
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Lanterna A, Pino E, Doménech-Carbó A, González-Béjar M, Pérez-Prieto J. Enhanced catalytic electrochemical reduction of dissolved oxygen with ultraclean cucurbituril[7]-capped gold nanoparticles. NANOSCALE 2014; 6:9550-9553. [PMID: 24993482 DOI: 10.1039/c4nr01967a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Gold nanoparticles capped with cucurbituril[7] have been prepared in the absence of metallic cations and organic ligands. Remarkably, these nanohybrids encapsulate dissolved oxygen and are highly active in electrochemical reduction. The effect of the presence of sodium and ammonium salts on this catalysed process is also analysed.
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Affiliation(s)
- Anabel Lanterna
- Instituto de Ciencia Molecular (ICMol)/Departamento de Química Orgánica, Universidad de Valencia, C/Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain.
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Fluoro- vs hydrocarbon surfactants: why do they differ in wetting performance? Adv Colloid Interface Sci 2014; 210:65-71. [PMID: 24814169 DOI: 10.1016/j.cis.2014.04.003] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 04/03/2014] [Accepted: 04/04/2014] [Indexed: 11/21/2022]
Abstract
Fluorosurfactants are the most effective compounds to lower the surface tension of aqueous solutions, but their wetting properties as related to low energy hydrocarbon solids are inferior to hydrocarbon trisiloxane surfactants, although the latter demonstrate higher surface tension in aqueous solutions. To explain this inconsistency available data on the adsorption of fluorosurfactants on liquid/vapour, solid/liquid and solid/vapour interfaces are discussed in comparison to those of hydrocarbon surfactants. The low free energy of adsorption of fluorosurfactants on hydrocarbon solid/water interface should be of a substantial importance for their wetting properties.
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Shedbalkar U, Singh R, Wadhwani S, Gaidhani S, Chopade BA. Microbial synthesis of gold nanoparticles: current status and future prospects. Adv Colloid Interface Sci 2014; 209:40-8. [PMID: 24456802 DOI: 10.1016/j.cis.2013.12.011] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 12/24/2013] [Accepted: 12/24/2013] [Indexed: 01/08/2023]
Abstract
Gold nanoparticles have been employed in biomedicine since the last decade because of their unique optical, electrical and photothermal properties. Present review discusses the microbial synthesis, properties and biomedical applications of gold nanoparticles. Different microbial synthesis strategies used so far for obtaining better yield and stability have been described. It also includes different methods used for the characterization and analysis of gold nanoparticles, viz. UV-visible spectroscopy, Fourier transform infrared spectroscopy, X ray diffraction spectroscopy, scanning electron microscopy, ransmission electron microscopy, atomic force microscopy, electron dispersive X ray, X ray photoelectron spectroscopy and cyclic voltametry. The different mechanisms involved in microbial synthesis of gold nanoparticles have been discussed. The information related to applications of microbially synthesized gold nanoparticles and patents on microbial synthesis of gold nanoparticles has been summarized.
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Affiliation(s)
- Utkarsha Shedbalkar
- Department of Microbiology, University of Pune, Pune 411007, Maharashtra, India
| | - Richa Singh
- Department of Microbiology, University of Pune, Pune 411007, Maharashtra, India
| | - Sweety Wadhwani
- Department of Microbiology, University of Pune, Pune 411007, Maharashtra, India
| | - Sharvari Gaidhani
- Institute of Bioinformatics and Biotechnology (IBB), University of Pune, Pune 411007, Maharashtra, India
| | - B A Chopade
- Department of Microbiology, University of Pune, Pune 411007, Maharashtra, India.
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Chen S, Yang M, Hong S, Lu C. Nonionic fluorosurfactant as an ideal candidate for one-step modification of gold nanorods. NANOSCALE 2014; 6:3197-3205. [PMID: 24499861 DOI: 10.1039/c3nr05546a] [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
In this work, a novel protocol was developed for size tuning and cetyltrimethylammonium bromide (CTAB) removal of gold nanorods using commercially available nonionic fluorosurfactants (FSN), an excellent candidate for PEG and other modification reagents. The tunable gold nanorods can easily be obtained by stopping the ligand replacement reaction at different time intervals. The FSN-coated gold nanorods are stable in the presence of high salt concentrations and over a wide range of pH values. Additionally, the cellular uptake experiments demonstrate that the FSN-coated gold nanorods have superior features in comparison to the widely used PEG-coated gold nanorods, such as high uptake amount, tunable uptake and excellent stability. Our findings suggest that FSN ligands are an ideal candidate for modifying gold nanorods with tunable aspect ratios, excellent biocompatibility, nontoxicity, and high stability, enabling conjugation to biomolecules for specific targeting, uptake, and delivery.
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Affiliation(s)
- Shuang Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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16
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Applications in analytical chemistry using the attractive properties of non-ionic fluorosurfactants. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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Huang R, Wen YH, Shao GF, Zhu ZZ, Sun SG. Single-crystalline and multiple-twinned gold nanoparticles: an atomistic perspective on structural and thermal stabilities. RSC Adv 2014. [DOI: 10.1039/c3ra46631k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Zhang L, Lu B, Lu C. Chemiluminescence sensing of aminothiols in biological fluids using peroxymonocarbonate-prepared networked gold nanoparticles. Analyst 2013. [DOI: 10.1039/c2an36510c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gobbo P, Biondi MJ, Feld JJ, Workentin MS. Arresting the time-dependent H2O2 mediated synthesis of gold nanoparticles for analytical detection and preparative chemistry. J Mater Chem B 2013; 1:4048-4051. [DOI: 10.1039/c3tb20913j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Liu X, Xu H, Xia H, Wang D. Rapid seeded growth of monodisperse, quasi-spherical, citrate-stabilized gold nanoparticles via H2O2 reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13720-6. [PMID: 22954316 DOI: 10.1021/la3027804] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this report, we demonstrate a rapid and simple seeded growth method for synthesizing monodisperse, quasi-spherical, citrate-stabilized Au nanoparticles (Au NPs) via H(2)O(2) reduction of HAuCl(4). Au NPs with diameter ranging from 30 to 230 nm can be synthesized by simply adding 12 nm citrate stabilized Au NP seeds to an aqueous solution of H(2)O(2) and HAuCl(4) under ambient conditions. The diameter of the resulting Au NPs can be quantitatively controlled by the molar ratio of HAuCl(4) to the Au seeds. The standard deviation of the Au NP sizes is less than 10%, and the ellipticity (ratio of major to minor axes) of the NPs is less than 1.1. Compared to existing ones, the present seeded growth approach is implemented within 1 min under ambient condition, and no unfavorable additives are involved because H(2)O(2) can readily decompose into H(2)O during storage or via boiling.
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Affiliation(s)
- Xiaokong Liu
- Ian Wark Research Institute, University of South Australia, SA 5095, Australia
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